Dead Line Phase Identification SystemPower Systems Integrity, Inc. Dead Line Phase Identification...
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Power Systems Integrity, Inc. Dead Line Phase Identification System Dual-Mode Operation and User’s Guide
Dead Line Phase Identification System
Operation and User’s Guide
Power Systems Integrity, Inc.
Power Systems Integrity, Inc. Dead Line Phase Identification System Dual-Mode Operation and User’s Guide
Table of Contents 1 Introduction ................................................................................................................. 1
2 System Use with Rubber Insulated Cables ................................................................. 1 3 System Use with Lead Jacketed Cables ...................................................................... 3 4 Phase Receiver Operation ........................................................................................... 5
4.1 System Setup ....................................................................................................... 6 4.2 Using Memorized Phase Transmitters and Cable Type ...................................... 6
4.3 Selecting Rubber or Lead Cable Mode ............................................................... 6 4.4 Selecting Phase Transmitters .............................................................................. 9
4.4.1 Phase Transmitter Status ............................................................................... 11 4.5 Memorizing Phase Transmitters and Cable Type ............................................. 12 4.6 Sending Tracing Current ................................................................................... 13
4.6.1 Rubber Cables ............................................................................................... 13 4.6.2 Lead Cables ................................................................................................... 15
4.7 Receiving Phases .............................................................................................. 16 4.8 Verify Mode: Checking Cables “In Connectors” ............................................. 17
4.8.1 Rubber Cable Mode ...................................................................................... 17 4.8.2 Lead Cable Mode .......................................................................................... 17
4.8.3 Verification Measurements ........................................................................... 18
4.9 Indicator Lamps ................................................................................................ 19
4.9.1 Output Active ................................................................................................ 19 4.9.2 Network Ready ............................................................................................. 19
4.9.3 Over Heat ...................................................................................................... 19 4.10 LCD Screen Pages, Keypad Usage ................................................................... 20
4.10.1 Page 1, Overall Status ............................................................................... 20
4.10.2 Page 2, System Status ............................................................................... 22 4.10.3 Page 3, Cellular Status .............................................................................. 22
4.10.4 Pages 4 & 6, Phase Transmitter Selection & Status ................................. 23 4.10.5 Pages 7 & 9, Phase Transmitter Graphs.................................................... 24
4.11 Operation Notes ................................................................................................ 25
5 Phase Transmitter Operation..................................................................................... 26 5.1 Connecting the Current Transformers .............................................................. 26 5.2 Current Sensor Installation at Transformers with Rubber Cables .................... 27
5.3 Current Sensor Installation at Transformers with Lead Cables ........................ 30 5.4 Current Sensor Installation for Cables .............................................................. 31
5.4.1 Create Loop for Tracing Current .................................................................. 31 5.4.2 Attach Current Transformers ........................................................................ 32
5.5 Phase Transmitter Setup ................................................................................... 32
5.5.1 Install Current Transformers ......................................................................... 32 5.5.2 Cellular Modem Signal Check ...................................................................... 32
5.5.3 Deploying the Battery Charger for long-term use ........................................ 33 5.5.4 Securing the Phase Transmitter .................................................................... 33
5.6 Phase Transmitter Removal .............................................................................. 33 5.7 LCD Screen Pages ............................................................................................ 34
5.7.1 Normal Operation ......................................................................................... 34
Power Systems Integrity, Inc. Dead Line Phase Identification System Dual-Mode Operation and User’s Guide
5.7.2 Cellular Modem Signal Strength .................................................................. 35 5.7.3 Sleeping......................................................................................................... 35
5.8 Configuration Setpoints .................................................................................... 36 5.8.1 On Time Setpoint .......................................................................................... 36 5.8.2 Sleep Time Setpoint ...................................................................................... 36
5.8.3 Message Window Setpoint ........................................................................... 37 5.9 Phase Transmitter Battery ................................................................................. 37
5.9.1 Charging the Phase Transmitter battery ........................................................ 37 5.9.2 Operating the Phase Transmitter from the Battery Charger ......................... 38
5.10 Current Transformer Self-Test .......................................................................... 38
5.10.1 Starting the Self Test ................................................................................. 39 5.10.2 Test Mode, Low Gain ............................................................................... 39
5.10.3 Test Mode, High Gain............................................................................... 40 5.10.4 Ending the Self Test .................................................................................. 40
5.11 Reprovisioning Phase Transmitter Cellular Modem......................................... 40 6 Phase Verification of Cables In Conductors ............................................................. 41
6.1 Verification Records ......................................................................................... 41
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1 Introduction The Power Systems Integrity, Inc. Dead Line Phase ID system (DLPID) consists of a
Phase Receiver unit and one or two Phase Transmitter unit(s).
Figure 1. Phase Transmitter, shown with Current
Transformers stowed.
The Phase Transmitter has three
current transformers (one per
phase), a cellular modem, and a
battery for remote operation. An
LCD displays shows system
operation and status while two
toggle switches allow for changes
in the system operation to be made.
The Phase Transmitter is contained
within a weathertight roadcase
suitable for temporary installation
in below grade vaults or other
locations where utility equipment
is used.
Figure 2. Phase Receiver, shown with output cables.
The Phase Receiver has a tracing
current output circuit, a cellular
modem, and an LCD display. A
keypad is provided to change the
information shown on the LCD
display, and three lamps indicate
system operation. The Phase
Receiver is contained within a
ruggedized roadcase that also
allows the tracing current output
leads to be stored.
2 System Use with Rubber Insulated Cables The Dead Line Phase ID (DLPID) system operating in Rubber Cable Mode is designed to
determine which one of a set of three cables have tracing current impressed upon them.
Making this determination allows the end of the cable to be correctly marked for phase.
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Cables that use rubber, XLP, plastic, EPDM, or any other non-conductive outer insulation
are phased in Rubber Cable Mode. For cables that use conductive outer jackets such as
PILC or Lead Cambric use Lead Cable Mode – to switch modes use button 2.
When phasing rubber insulated cables the tracing current is applied to and measured on
the cable that is to be phased. The other two phases are not connected and do not receive
any tracing current. The tracing current can be measured because each phase’s neutral
conductors are separated away from the phase copper at the cable terminations (elbows or
hammerheads).
Transformer
Elbows
Neutral StrapsBond Wire
A
B
C
Current
Transformers
• Phase B CT measures tracing current
• Phase A and C CTs’ measure no current
• Phase Receiver displays “B”
Neutral Straps
A
B
C
Phase Copper
Rubber Cable Application
Phase
Receiver
For this example, assume that a buried three-phase URD cable has an open between two
transformers. The cable’s open has been located and excavated. The cable’s identity is
known and the phases of the three cables must be determined.
A Phase Transmitter is temporarily installed in a location where the cable’s phase is
known, at one of the transformers. The transformer’s internal ground is applied, to make
a loop for tracing current to flow in each cable. A Current Transformer is clipped onto
each of the three phase cables serving the transformer. The Current Transformers are
labeled as to which phase they are to be clipped to, and the labels are matched with the
known phases. The identity of the Phase Transmitter is recorded.
A second Phase Transmitter is installed at the other transformer in the same way.
Some distance away, a Phase Receiver is connected to the ends of one cable whose phase
is to be determined. Tracing current is sent through the cable, and returns through the
cable’s concentric neutral. The tracing current is detected by one of the Phase
Transmitter’s three Current Transformers. The Phase Transmitter transmits to the Phase
Receiver the phase that the tracing current is detected on. The Phase Transmitter then
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displays the detected phase so the cable may be labeled and spliced. To display a phase,
the following must occur.
Frequency of tracing current detected must match frequency that
is being emitted. Tracing current must be detected on only one Current
Transformer.
No tracing current may be detected on the other two Current
Transformers
The process is repeated for the other end of the cables.
When each phase cable is “in connectors”, that is the phase copper has been crimped to
splice the cable, the tracing current is applied again. In this case, both Phase Transmitters
will detect tracing current and transmit the phase to the Phase Receiver. Both phases
should match, which verifies that the phase cable is correctly identified.
A permanent record is stored of the verification. The permanent record is uploaded to a
server in a remote location. All verification tests are available to be viewed as needed,
sorted by time and the identity of the Phase Receiver used for the verification.
The DLPID system can be used to verify phases of aerial cables, URD, triplex, and even
secondary cables in the same way. All that is needed is to establish a loop for tracing
current to flow, and to clip on the Phase Transmitter’s Current Transformers in a location
where the cable phase is known.
3 System Use with Lead Jacketed Cables The Dead Line Phase ID (DLPID) system in Lead cable Mode is designed to determine
which one of a set of three cables Does Not Have tracing current impressed upon them.
Making this determination allows the end of the cable to be correctly marked for phase.
Cables that are PILC (Paper Insulated Lead Covered), Lead Cambric, or any other
conductive outer jacket are checked in Lead Cable Mode. For cables that use non-
conductive outer insulation such as EPDM, Rubber, or Plastic use Rubber Cable Mode –
to switch modes use button 2.
When phasing cables with a conductive outer jacket, the jacket is not used to carry
tracing current. To form a loop for tracing current to flow requires using two of the
phases. The remaining phase that does not carry any tracing current is the phase that is
identified. This is opposite to phasing rubber insulated cables. To repeat – the phase
displayed on the Phase Receiver is that of the UNCONNECTED PHASE when
phasing lead cables.
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Transformer
A
B
C
Current
Transformers
• Phase B CT measures no current
• Phase A and C CTs’ measure tracing current
• Phase Receiver displays “B”
A
B
C
Phase Copper
Lead Cable Application
Phase
Receiver
For this example, assume that a buried three-phase PILC cable has an open between two
transformers. The cable’s open has been located and excavated. The cable’s identity is
known and the phases of the three cables must be determined.
A Phase Transmitter is temporarily installed in a location where the cable’s phase is
known, at one of the transformers. The transformer’s internal ground is applied, to make
a loop for tracing current to flow in each cable. A Current Transformer is clipped onto
each of the three phase cables serving the transformer. The Current Transformers are
labeled as to which phase they are to be clipped to, and the labels are matched with the
known phases. Even though the lead insulation has a wiped joint to the transformer tank,
the Current Transformers can read the tracing current. The identity of the Phase
Transmitter is recorded.
A second Phase Transmitter is installed at the other transformer in the same way.
Some distance away, a Phase Receiver is connected to two phases of one cable whose
phases are to be determined. Tracing current is sent through one of the connected phases,
flows through the transformer’s ground, and returns through the second connected phase.
The tracing current is detected by two of the Phase Transmitter’s three Current
Transformers. The Phase Transmitter transmits to the Phase Receiver the phases that the
tracing current is detected on. The Phase Transmitter then displays the phase OF THE
UNCONNECTED PHASE so the cable may be labeled and spliced. To display a phase,
the following must occur.
Frequency of tracing current detected must match frequency that
is being emitted.
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Tracing current must be detected on exactly two Current
Transformers.
No tracing current may be detected on the third Current
Transformer
The process is repeated for the other end of the cables.
When each phase cable is “in connectors”, that is after the phase copper has been crimped
to splice the cable and before the lead shields have been connected, the tracing current is
applied again. In this case, both Phase Transmitters will detect tracing current and
transmit the phase to the Phase Receiver. Both phases should match, which verifies that
the phase cable is correctly identified.
A permanent record is stored of the verification. The permanent record is uploaded to a
server in a remote location. All verification tests are available to be viewed as needed,
sorted by time and the identity of the Phase Receiver used for the verification.
4 Phase Receiver Operation The DLPID Phase Receiver generates tracing current, communicates using wireless with
a set of two Phase Transmitters located at remote locations, and displays the phase
tracing current is received upon by the Phase Transmitters.
The DLPID Phase Receiver requires 120VAC power at 3A to operate. The Phase
Receiver may be operated on line power, from a generac, or using an inverter rated for at
least 1000 Watts.
The DLPID Phase Receiver tracing current is emitted when the RUN/ISOLATE switch is
in the RUN position. The tracing current is limited to no more than 9.0 Volts under all
conditions. Tracing current may range from 0.1 to 9.0 Amps output depending on the
impedances of the cables under test. The Phase Receiver tracing current output can
operate into a short circuit indefinitely without damage.
The DLPID Phase Receiver is provided with a 25 foot cord with a NEMA L1-15
twistlock receptacle for tracing current output. A 5 foot cable with alligator clips is
provided to make connections to the cable under test. Optional extension leads can be
supplied in 25 foot increments, up to 100 feet total.
The Phase Receiver uses a cellular modem to interact with the Phase Transmitters. The
cellular modem is automatically turned on and managed by the Phase Receiver. The
“Network Ready” lamp indicates cellular modem status; when this lamp is on steady the
Cellular modem is operating and ready for use. Additional details about the cellular
modem’s operation are available on LCD Page 3 described in Section 4.10.3.
The Phase Receiver is water resistant but is not waterproof. Do not operate the Phase
Receiver where it will be exposed to heavy rain or water ingress. If circumstances require
operating the Phase Receiver in adverse weather conditions, provide protection against
direct rain or heavy snow. If the Phase Receiver gets excessively wet, dry it before
closing the roadcase to prevent mold and mildew growth.
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4.1 System Setup
Plug the Phase Receiver into a 120VAC source. Check the RUN/ISOLATE switch is in
the ISOLATE position. Switch the Phase Receiver on. The Phase Receiver takes
approximately one minute to complete its internal tests and start up. While this is taking
place, remove the output cable from the roadcase to allow proper airflow.
The Phase Receiver cellular modem is automatically switched on. When the “Network
Ready” lamp illuminates steady the cellular modem is active. The cellular modem is used
to interact with the Phase Transmitters.
The Phase Receiver displays LCD Page 1, which is the overall status. To change pages
press the number key that matches the page you want to view, see Section 4.10. To
increase the display contrast, press the “A” key. Press the “B” key to decrease contrast.
To increase the display backlight press the “C” key while the “.” key reduces the
backlight. To reset the contrast and backlight to the starting values, press the “#” key.
4.2 Using Memorized Phase Transmitters and Cable Type
The DLPID system equipped with V1.3 or later software can use a memorized set of
Phase Transmitters. When a set of Phase Transmitter serial numbers have been
memorized as described in section 4.5 these Phase Transmitters will be automatically
selected when the DLPID Phase Receiver is turned on. In this case there is no need to
select the Phase Transmitters as described below, as the selection is already made.
The type of cable, rubber or lead, is also memorized when the Phase Transmitter serial
numbers are stored. The cable setting is also automatically recalled when the DLPID
Phase Receiver is turned on. In this case there is no need to select a cable type as
described below.
Should the cable type that has been memorized not be appropriate, change cable types as
described below. This does not reset the memorized cable type. To change the
memorized cable type, follow the steps in section 4.5 to memorize the Phase Transmitter
serial numbers as this also memorizes the cable type in use.
4.3 Selecting Rubber or Lead Cable Mode
When using memorized cable mode you don’t need to select the cable mode as this
section describes, unless your measurements are on a different cable type.
When using memorized Phase Transmitter serial numbers the Cable Type in use when
the Phase Transmitter serial number was memorized is also stored. Changing the cable
type is only needed when working with different cable than shown on the LCD screen.
The DLPID system is usable on rubber insulated or lead jacketed cables. The difference
between the cable types is that rubber insulated provides access to the center phase
copper for current measurements at the cable terminations, while lead jacketed cable uses
a conductive outer jacket that is electrically connected (wiped) to the transformer tank.
Examples of what is called Rubber insulated cable would be any cable with a polymeric
insulating jacket, including XLP cables.
After memorizing Phase Transmitter serial numbers the DLPID Phase receiver uses the
cable type that was active when the Phase Transmitter serial numbers were stored. If
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Phase Transmitter serial number have never been stored, the DLPID Phase Receiver
defaults to rubber cable mode on startup. The operating mode is always shown on LCD
Page 1.
Changing cable mode is temporary and will be reset to the memorized cable mode when
the DLPID Phase receiver is turned off. To memorize a different cable mode, follow the
steps in section 4.5 to memorize Phase Transmitter serial numbers as this also memorizes
the cable mode in use.
To shift to lead cable mode, press the ‘2’ button. The LCD displays Page 2 to allow
changing the system mode.
Press the ‘*’ button to change to lead cable mode.
Then press the ‘#’ button to confirm the change. Press the ‘1’ button to redisplay LCD
Page 1.
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To shift from lead cable mode to rubber cable mode the process is similar. Press the ‘2’
button. The LCD displays Page 2 to allow changing the system mode.
Press the ‘*’ button to change to rubber cable mode.
Then press the ‘#’ button to confirm the change. Press the ‘1’ button to redisplay LCD
Page 1.
Note that the RUN/ISOLATE switch must be set to ISOLATE to change the system
mode. LCD Page 2 prompts to switch to ISOLATE if needed.
4.4 Selecting Phase Transmitters
When using memorized Phase Transmitter serial numbers you don’t need to enter the
Phase Transmitter serial numbers as this section describes.
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The Phase Receiver must be told which Phase Transmitters are receiving its tracing
current. If the Phase Transmitters in use are different from the memorized serial numbers
this process must be done each time the Phase Receiver is switched on. The crew that
positioned the Phase Transmitters must tell the Phase Receiver crew the Phase
Transmitter serial numbers.
The Phase Receiver can receive phases from two Phase Transmitters at the same time.
These are called the Left and Right sides. The Left side uses the left portion of the Page 1
screen, and keypad keys 4 and 7. The Right side uses the right portion of the Page 1
screen, and keys 6 and 9.
Note: The procedure below uses the Left side as an example. To use the Right side,
substitute key “6” instead of key “4”.
Step 1. Press the “4” key to select the Left Side Detail Page.
Step 2. Notice that no Phase Transmitter is selected. Press “*” to display a list of all
Phase Transmitter units. (You will not be able to change screens or change display
contrast and backlight while selecting a Phase Transmitter until the selection process is
either completed or cancelled.)
Step 3. Press “A” or “C” to highlight the Phase Transmitter that is on your left. The “A”
key rolls the list down while the “C” key rolls the list up. Keep pressing “A” or “C” until
the Phase Transmitter serial number is highlighted.
Step 4. When the Phase Transmitter that has been located on your left is highlighted,
press the “#” key to select it, or press the “B” key to both select and memorize it.
Note: Pressing the “B” key will memorize both Phase Transmitter serial numbers, even
the side that is not shown. The cable type, rubber or lead, is also memorized.
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If you select the wrong Phase Transmitter, follow the same procedure to change the
Phase Transmitter to the correct one.
Note: If you do not want to select a Phase Transmitter, press the “*” key to cancel the
selection process.
To disconnect from a Phase Transmitter, select “NONE” from the list of Phase
Transmitters. The “·” button quickly jumps to “NONE”. Remember to press “#” after
selecting “NONE”. Pressing “B” after selecting “NONE” will memorize “no Phase
Transmitter on this side”.
Repeat the procedure for the Right side, if you are using two Phase Transmitters. Note
that the same Phase Transmitter cannot be selected for the Left and Right side.
After your selections are complete, the Phase Receiver calls each Phase Transmitter that
you want to use to tell the Phase Transmitter to wake up and begin sending phases. This
can take up to five minutes, or longer depending on the sleep time set into the Phase
Transmitters (see Section 5.8).
Check the overall status LCD screen, Page 1, to find out the status of the Phase
Transmitters. The words under the Phase Icon show the status of that Phase Transmitter.
When a Phase Transmitter has woken up and is sending phases its status word will be
“Online”. When both Phase Transmitters show “Online” you are ready to begin phasing
cables.
4.4.1 Phase Transmitter Status
The Phase Transmitter status is displayed on Page 1 (overall status) and detailed on Page
4/6 (detail page). The status messages are described below.
Phase Icon
shown on Pg. 1
Text Used
on Pg 4 & 6
Description
No Unit
Selected
No Phase Transmitter has been selected for this side. To
receive phases, use the detail page to select a Phase
Transmitter as described above.
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Waiting To
Dial
This Phase Transmitter is selected, and a message is
being prepared to wake it up.
The word “Dialing” alternates with the serial number of
the Phase Transmitter that is selected.
Waiting for
Connection
This Phase Transmitter is selected, and a command to
wake up has been sent. If the Phase Transmitter has not
connected in a few minutes, it will be commanded to
wake up again. The detail page shows the time remaining
until another command to wake up will be sent.
The word “Calling” alternates with the serial number of
the Phase Transmitter that is selected.
Online This Phase Transmitter is active, and has sent data within
the last 2 minutes. The detail page shows the time the
most recent data was received.
After a phase has been detected, a Phase Icon will
display instead of the “?” unknown phase.
Offline This Phase Transmitter is selected, but no data has been
received within the last 2 minutes. The Phase Transmitter
will automatically reconnect. As with any wireless or
cellular system, occasional communication dropouts are
expected.
Unable to
Connect
This Phase Transmitter has been selected, three attempts
have been made to wake it up, but no response has been
received. Recheck the detail page to ensure the correct
Phase Transmitter has been selected.
4.5 Memorizing Phase Transmitters and Cable Type
Memorized Phase Transmitter serial numbers are automatically selected as soon as the
Phase Receiver is switched on. The type of cable, rubber or lead, is also selected.
To memorize the Phase Transmitter serial numbers and cable type in use, first select the
cable type that is to be memorized. Follow the steps in Section 4.3 to select the cable
type.
Next follow the steps in Section 4.4 to select the Left side Phase Transmitter serial
number. Press the ‘B’ key once the serial number has been highlighted to memorize the
serial number.
Again follow the steps in Section 4.4 to select the Right side phase transmitter, this time
substituting the ‘6’ key for the ‘4’ key. Press the ‘B’ key once the serial number has been
highlighted to memorize the serial number.
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After memorizing the serial numbers and cable mode, wait 2 minutes before switching
the Phase Receiver off to allow the values to stored into non-volatile memory.
Note: Memorizing either the Left or Right Phase Transmitter serial number memorizes
both Phase Transmitter serial numbers as well as the cable type selection.
4.6 Sending Tracing Current
DANGER: NEVER INJECT TRACING CURRENT INTO AN
ENERGIZED CIRCUIT. FOLLOW ALL COMPANY PROCEDURES
AND REQUIREMENTS IN THE PRESENCE OF VOLTAGE.
The Phase Receiver sends tracing current at a selection of frequencies that cannot occur
in a 60-Hz (or 50-Hz) distribution system, even if harmonics are present. The Phase
Receiver automatically selects frequencies. The usage of different frequencies improves
the distance over which phasing can be accomplished by automatically adapting to
different types of cables, and prevents phasing if a Phase Transmitter is incorrectly
selected.
4.6.1 Rubber Cables
Tracing current requires that a complete loop be made in order for current to flow. When
phasing rubber cables the loop is made up of (1) the cable that is to be phased; (2) the
transformer’s internal primary ground; (3) the neutral straps in all 3 cables; and (4) the
Phase Receiver itself. The transformer’s ground must remain applied while phase
measurements are made.
The phase displayed on the Phase Receiver is the phase of the cable that has the alligator
clip attached. If the Phase Receiver shows ‘A’ tag the cable with ‘A’.
To send tracing current attach the alligator clip cord to the Phase Receiver twist lock
receptacle. Clip the black alligator clip to the cables’ concentric neutral straps. Clip the
red alligator clip to the cable’s phase copper. It is permissible to use a copper nail to
make the connection instead of stripping the semiconductor back.
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Figure 3. Connecting to Cable Ends to inject Tracing Current on Rubber Cables
Switch the RUN/ISOLATE switch to RUN. The Output Active lamp illuminates,
indicating that the Phase Receiver is emitting tracing current. The overall status LCD
screen, Page 1, shows the frequency that is being emitted in the center of the screen.
When you want to send tracing current on a different cable, switch to ISOLATE. Move
the alligator clips to the desired cable, then switch back to RUN.
NOTE: Ensure that you switch to ISOLATE before moving the alligator clips. Switching
to ISOLATE interrupts the tracing current, and tells the Phase Receiver that you are
moving to a different cable.
NOTE: The loop at the Phase Transmitter end is provided by the transformer primary
ground lever being moved to “ground”. If phasing cables that are not yet terminated,
connect all the phase copper and neutral straps together with temporary wires.
NOTE: Connecting together the concentric neutral straps of all the cables to be phased
can improve the loop for tracing currents to flow without changing the measurements.
DO NOT connect different phase’s phase copper together at the location tracing current
is injected. This will result in erroneous readings.
To receive phases, the following checks must be met:
Frequency of tracing current detected must match frequency that
is being emitted.
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Tracing current must be detected on only one Current
Transformer.
No tracing current may be detected on the other two Current
Transformers
4.6.2 Lead Cables
Tracing current requires that a complete loop be made in order for current to flow. When
phasing lead cables the lead shields of the cables are not used to carry tracing current, as
the internal phase copper cannot be accessed. The loop is made up of (1) the phase
copper of a cable that is to be phased; (2) the transformer’s internal primary ground; (3)
the phase copper of a second cable that is to be phased; and (4) the Phase Receiver itself.
The transformer’s ground must remain applied while phase measurements are made.
The phase displayed on the Phase Receiver is the phase of the cable that does not
have any alligator clips attached. If the Phase Receiver shows ‘A’ tag the cable that has
no alligator clips with ‘A’.
To send tracing current attach the alligator clip cord to the Phase Receiver twist lock
receptacle. Clip the black alligator clip to the phase copper one of the three cables to be
phased, and the red alligator clip to a different cable’s phase copper. It is permissible to
use a copper nail to make the connection instead of stripping the lead back. Remember
the phase received is that of the cable that has no alligator clips attached.
Switch the RUN/ISOLATE switch to RUN. The Output Active lamp illuminates,
indicating that the Phase Receiver is emitting tracing current. The overall status LCD
screen, Page 1, shows the frequency that is being emitted in the center of the screen.
When you want to send tracing current on a different cable, switch to ISOLATE. Move
the alligator clips to the desired cables, then switch back to RUN.
NOTE: Ensure that you switch to ISOLATE before moving the alligator clips. Switching
to ISOLATE interrupts the tracing current, and tells the Phase Receiver that you are
moving to a different cable.
NOTE: The loop at the Phase Transmitter end is provided by the transformer primary
ground lever being moved to “ground”. If phasing cables that are not yet terminated,
connect all the phase coppers together with temporary wires. It is not necessary to
connect the lead shields; if desired the lead shields may be connected to the phase
coppers.
DO NOT connect different phase’s phase copper together at the location tracing current
is injected. This will result in erroneous readings.
To receive phases, the following checks must be met:
Frequency of tracing current detected must match frequency that
is being emitted.
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Tracing current must be detected on exactly two Current
Transformers.
No tracing current may be detected on the third Current
Transformer.
REMEMBER the phase displayed is that of the cable that has no alligator clips attached.
4.7 Receiving Phases
The Phase Receiver automatically receives phases from each Phase Transmitter unit as
long as it is emitting tracing current. The first phase update takes about 30 seconds after
switching to RUN (this extra time is used to synchronize the Phase Transmitters), then
updates are made about every 20 seconds. The number of successful phase receptions is
shown by the Signal Quality graph on Page 1. A higher Signal Quality indicates that
more verifications of the displayed phase have been made. Four phase measurements are
needed to get 100% Signal Quality.
The Phase Receiver shows which phase that tracing current is detected on. This is shown
on the overall status LCD screen, Page 1, as the Phase Icon. The left Phase Transmitter’s
icon is on the left side of the screen. The Icon will indicate “1”, “2”, or “3” (or “A”, “B”,
“C” depending on the phase naming at your utility). To display a Phase Icon checks must
be met as described in section 4.6.1 for Rubber cable mode or section 4.6.2 for Lead
cable mode.
If the phase cannot be determined a “?” will display.
When you are phasing a cable that has not yet been spliced only one Phase Transmitter
will measure tracing current and send phases to the Phase Receiver. The other Phase
Transmitter will indicate “?” as no tracing current is detected. You will need to check
each portion of the cable individually in this case.
Before moving the alligator clips to a different set of cables, switch to ISOLATE. The
Phase Icon will change to include a diagonal line. This indicates the Phase Icon displayed
is no longer updated. The Phase Icon will continue to display the phase that was most
recently determined, with the diagonal line, until you switch to RUN.
Phase Icon
shown in RUN
Phase Icon shown
in ISOLATE
Description
Cable phased. The phase determined by the Phase
Transmitter corresponds to the “A” Phase Current
Transformer.
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Cable phased. The phase determined by the Phase
Transmitter corresponds to the “B” Phase Current
Transformer.
Cable phased. The phase determined by the Phase
Transmitter corresponds to the “C” Phase Current
Transformer.
No Phase can be determined at this point. If you
have just switched to RUN, a new phase is being
measured which takes about 30 seconds.
If you have been in RUN for over 1 minute,
recheck your connections to make sure tracing
current can flow.
4.8 Verify Mode: Checking Cables “In Connectors”
4.8.1 Rubber Cable Mode
When the cable is “in connectors” with the phase copper spliced, the connections may be
verified by sending tracing current to both Phase Transmitters at the same time. This
verifies that the phase copper has been phased correctly. This test is easiest after the
phase copper is spliced but before concentric neutral is spliced. Install a temporary bond
wire between both sides of the cable’s concentric neutral straps where you will later
splice. Reconnect the alligator clips with the black clip to the cable’s concentric neutral
straps and the red clip to the spliced phase copper. Switch to RUN to begin. Section 4.8.3
shows the verification measurement procedure.
In some cases only one Phase Transmitter will show phases when checking the cables “in
connectors”. This happens when one Phase Transmitter hogs the tracing current. If this
happens, disconnect the temporary wire between the concentric neutral straps, and move
the black alligator clip to each cable’s concentric neutral straps in turn. Make sure that the
same phase icon appears on each side. You will not be able to send a Phase Verification
message in this case.
4.8.2 Lead Cable Mode
After splicing the three phase coppers, the connections may be verified by sending
tracing current to both Phase Transmitters at the same time. This verifies that the phase
copper has been phased correctly. This test is easiest after the phase copper is spliced and
before the lead shields are reapplied. Reconnect the alligator clips with the black clip to
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one phase cable’s copper and the red clip to a different phase cable’s copper. Switch to
RUN to begin. Section 4.8.3 shows the verification measurement procedure.
REMEMBER the phase shown on the Phase receiver is the phase of the cable with no
alligator clips applied.
In some cases only one Phase Transmitter will show phases when checking the cables “in
connectors”. This happens when one Phase Transmitter hogs the tracing current. You will
not be able to send a Phase Verification message in this case.
4.8.3 Verification Measurements
Check the overall status on LCD Page 1. Both sides of the screen should show the same
phase icon. Allow the Signal Quality for both sides to build up to 100% to perform a
Phase Verification. This will take 1 to 2 minutes.
When the Signal Quality builds to 100% for both the Left and Right Phase Transmitters,
and the displayed phase is the same on both sides, a Phase Verification measurement can
be made. Page 1 will display the text “Press 5 to Verify”. Press the “5” button to make
the Phase Verification.
You will be prompted to switch to ISOLATE to confirm the Phase Verification. After
switching to ISOLATE, the Phase Verification will be saved into the Phase receiver and
sent to a remote location. The Phase Verification shows the serial number of the Phase
Receiver and both Phase Transmitters, the phase that was measured, and the time the
Phase Verification was made. See Section 5.9 for details. When the Phase Verification
messages have been saved and uploaded, each step shows “OK”.
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At this time you can repeat the Phase Verification for the other phases.
4.9 Indicator Lamps
4.9.1 Output Active
The Output Active lamp illuminates steady when the Phase Receiver is emitting tracing
current. Switch the RUN/ISOLATE switch to RUN to emit tracing current, and switch to
ISOLATE to stop the tracing current.
Do not disconnect the alligator clips when the Output Active lamp is on. Switch to
ISOLATE first.
If the Output Active lamp flashes the output circuit has become overheated. Switch the
RUN/ISOLATE switch to ISOLATE (the Output Active lamp will go out), then see
Section 4.9.3 to correct the overheated condition.
4.9.2 Network Ready
The Network Ready lamp will illuminate steady when the cellular modem is on line and
is ready for usage. The cellular modem may take up to two minutes to go online when the
Phase Receiver is switched on. If the Network Ready lamp never illuminates, check LCD
Page 3 for details of the cellular system status (see Section 4.10.3).
4.9.3 Over Heat
If the Over Heat lamp illuminates either steady or flashing, the output circuits have
become overheated. The temperature of the output circuits is continuously monitored and
is displayed as a bar graph on LCD Page 1, and in degrees on LCD Page 2.
If the Over Heat lamp flashes, switch the RUN/ISOLATE switch to ISOLATE. The lamp
will then illuminate steady.
Should the Over Heat lamp illuminate steady, check to see that the air intake and exhaust
on the inside of the Phase Receiver roadcase are obstructed. Remove the output cable if it
is still inside the roadcase storage area, as the air intake and exhaust are located in this
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area as well. Hold your hand adjacent to the exhaust grill (located towards the front) to
feel if air is circulating. If air is circulating, a heavy load may have caused the output
circuits to overheat. Waiting a few minutes for the circuits to cool will allow the Over
Heat light to extinguish, then tracing current can again be emitted. While waiting leave
the Phase Receiver switched on to keep the cooling fan running. If air is no longer
circulating the cooling fan is faulty and the Phase Receiver will require repair.
4.10 LCD Screen Pages, Keypad Usage
The LCD screen can show several different sets of
information which are called pages. Change displayed
pages by pressing the number key that corresponds to the
page you want to view. Some number keys have multiple
pages, in which case pressing the same number key
changes between the sub pages.
The page number is always displayed on the LCD screen. Usually the page number is
shown in the lower left corner (except for Page 1, where it is in the lower center of the
page). If multiple pages are available for a single number key, the page is shown as “7A”,
“7B”, etc.
To change the LCD screen contrast, use the “A” and “B” keys. The LCD contrast is
shown on LCD Page 2.
To change the LCD screen backlight intensity, use the “C” and “.” keys. The backlight
intensity has 8 steps, plus off. The backlight intensity is shown on LCD Page 2.
To reset the LCD contrast to medium and turn off the backlight, press the “#” key.
When selecting a Phase Transmitter serial number, the LCD contrast and backlight
cannot be changed as the same keys are used. Make your adjustments to the LCD contrast
and backlight first.
The keys on the keypad do not have key repeat. Holding the key down is the same as
pressing it once.
4.10.1 Page 1, Overall Status
This page displays the information needed to determine cable phases. The LCD screen is
divided into a Left side for the Left Phase Transmitter, a Right Side for the Right Phase
Transmitter, and the center used for information important to both the Left and Right
side.
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The system mode is shown on the second line. This will display either Rubber Cable
Mode or Lead Cable Mode.
A Phase Icon displays for the Left and Right Phase Transmitter Units. The Phase Icon
may be “X” meaning that no Phase Transmitter is selected; a “phone symbol” meaning
that the Phase Receiver is connecting to the Phase Transmitter; a “?” question mark
meaning that the Phase Transmitter is on line but the cable’s phase cannot be determined,
or one of “A” “B” “C” (or “1”, “2”, “3”) showing the phase that tracing current is being
received upon.
When a Phase Transmitter is On Line, a Signal Quality vertical bar graph appears
adjacent to the Phase Icon, and the Signal Quality is shown in percent. Signal Quality is
measured by the number of times that the same phase is detected at a different tracing
current frequency. Each additional time the same phase is detected at a different
frequency the Signal Quality increases to a maximum of 100%. Good practice involves
letting the signal quality build up to 100% before tagging a cable’s phase, which makes
sure that an incorrect Phase Transmitter has not been selected.
The bottom lines show the tracing current output status (OFF or ON) and the output
frequency if the tracing current is ON. The temperature of the output circuits is also
shown as a horizontal bar graph.
If a Phase Verification is possible, the middle lines will prompt the operator with “Press 5
to Verify”. See Section 5.9 for the requirements to perform Phase Verification.
The text under the Phase Icon indicates the state of the Phase Transmitter. The possible
states are described in Section 4.4.1. When the Phase Transmitter is Online, and a new
data message is received, the words “Rx Polyph” will briefly appear indicating new
multi-phase data has been received.
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4.10.2 Page 2, System Status
This page displays the Phase Receiver details. The serial number and software version are
shown. If the tracing current is being emitted that frequency is shown. The temperature of
the tracing current output circuits is shown.
The System Mode is changed from Rubber Cable Mode to Lead Cable Mode using Page
2. To change the system mode, switch to ISOLATE. Press the ‘*’ button to display the
new system mode, then the ‘#’ button to confirm the change. Details of changing the
system mode are in section 4.2.
4.10.3 Page 3, Cellular Status
This page shows the cellular modem status. If the cellular modem is not yet ready for use,
the page will display “CDMA Not Ready”.
When the cellular modem is ready for use, the page displays the cellular signal strength,
IP address that has been assigned, and the cell tower that is in use (the “Side” and the
“SID”).
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The cellular mode is “provisioned” to allow it to operate on the cellular network. On
occasion, such as if the cellular phone number has been changed, the cellular modem will
need to be reprovisioned. The cellular modem may be reprovisioned by displaying Page 3
then pressing the ‘*’ button to request reprovisioning.
After requesting to reprovision, press the ‘#’ button to confirm the request. The
reprovisioning process takes approximately 3 minutes during which time the Network
Read LED will extinguish. Once reprovisioning is complete, the cellular modem will
reconnect to the cellular network and the Network Ready LED will illuminate steady.
4.10.4 Pages 4 & 6, Phase Transmitter Selection & Status
At startup, no Phase Transmitter is selected. The LCD page is shown below. A Phase
Transmitter must be selected to perform phasing.
Press the “*” key to show a list of all Phase Transmitters, then use “A” or “C” keys to
highlight the correct Phase Transmitter.
Press the “#” key to select the highlighted Phase Transmitter. The Phase Transmitter is
sent a message to tell it to wake up. After a short delay, the Phase Transmitter
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Information page is shown. Before the Phase Transmitter is online some of the data
cannot be filled in and will show as never, not known, or dashes.
Press the “B” key to memorize the selected Phase Transmitter. The memorized Phase
Transmitter will be automatically recalled when the Phase Receiver is switched on.
With the Phase Transmitter on line, the detail page shows the time the most recent data
was received. The Phase Transmitter’s battery remaining is also shown. When the Phase
Transmitter battery reduces to 0% approximately one more hour of Online operation is
possible.
The most recent data message type is shown in the top right, in this case Polyphase Data
(which is a measurement on all three Current Transformers). The time since the data was
received is also shown, in this case 32 seconds.
4.10.5 Pages 7 & 9, Phase Transmitter Graphs
The data received from the left Phase Transmitter is shown graphically on Page 7 (the
Right is on Page 9). The Phase Transmitter measures tracing current on its three Current
Transformers. Each Current Transformer has a dedicated page, which can be selected by
repeatedly pressing the “7” key. The Page will be displayed as “7A” (corresponding to
the Current Transformer labeled “A”), then “7B”, then “7C”, then “7A” again, and so on.
Two waveforms are superimposed. The oscilloscope waveform is indicated by the letter
“T” attached to its left end. The spectrum analysis waveform is indicated by an “F”
attached to its right end. Frequencies detected in the oscilloscope waveform are shown as
vertical lines in the spectrum waveform with the line’s height proportional to the
magnitude of the signal, lower frequencies shown towards left side and higher
frequencies towards the right side.
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If any frequency is detected, it is shown in the table on the far left. This table lists
frequencies and their amplitude, sorted by amplitude. In this case, the Input is “C”
corresponding to the Left Phase C Current Transformer. The Frequency detected is 45Hz,
with a magnitude of 29%. The single vertical line corresponds to 45Hz in the Frequency
waveform (remember, lower frequencies appear to the left, higher to the right).
4.11 Operation Notes
The DLPID Phase Receiver requires 120VAC power at 3A to operate. The Phase
Receiver may be operated on line power, from a generac, or using an inverter rated for at
least 1000 Watts.
The Phase Receiver sends tracing current at a selection of frequencies that cannot occur
in a 60-Hz (or 50-Hz) distribution system, even if harmonics are present.
The tracing current is limited to no more than 9.0 Volts under all conditions. Tracing
current may range from 0.1 to 9.0 Amps output depending on the impedances of the
cables under test.
The Phase Receiver must be told which Phase Transmitters are receiving its tracing
current.
DO NOT connect different phase’s phase coppers together or the phase results will be
wrong.
If the phase cannot be determined a “?” will display. This means that the Phase
Transmitter is not detecting tracing current. Allow at least 30 seconds after switching to
RUN for the first phase measurement to be made.
In order to send tracing current a loop must exist. The loop may be through a permanent
facility such as the ground applied to a transformer primary or the loop may be made in a
temporary manner such as through using bonding wire at the ends of an unterminated
cable.
If the Over Heat lamp illuminates steady, make sure the air intake and exhaust on the
inside of the Phase receiver roadcase are not obstructed.
To change LCD Pages showing different information use the number keys. There is no
Page 0 or Page 8.
To change the LCD screen contrast, use the “A” and “B” keys.
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To change the LCD screen backlight intensity, use the “C” and “.” keys.
5 Phase Transmitter Operation The DLPID Phase Transmitter receives tracing currents, measures the tracing currents,
and transmits the tracing current information to the Phase Receiver.
The Phase Transmitter uses an internal Cellular Modem to interact with the DLPID
system. Position the Phase Transmitter near a grate if used underground, such as in a
vault. Check the modem signal strength before closing the roadcase as described in
Section 5.5.2 to ensure that the Cellular Modem will work correctly.
When a Phase Transmitter has been deployed but is not active, it can run in a low-power,
battery-conserving mode. Activation is automatic when a Phase Receiver needs phasing
information. The Phase Transmitter wakes up every 5 minutes (adjustable, see Section
5.8.1) to see if a command from a Phase Receiver to switch on is waiting. If no command
to wake up is present, the Phase Transmitter then goes back to sleep. While sleeping the
LCD screen displays “Sleeping” and counts down the number of seconds until wake-up.
While sleeping, pressing any navigation switch immediately “Wakes Up” the Phase
Transmitter. The Phase Transmitter may also be operated from its AC-powered battery
charger in which case the low-power mode is not used, and the Phase Transmitter may be
left deployed indefinitely.
The Phase Transmitter incorporates an LCD screen to show status messages. Two
navigation switches are provided. The LEFT/RIGHT navigation switch below the LCD
screen changes which information is displayed on the LCD. The UP/DOWN navigation
switch is used to change the values of the setpoints displayed on the LCD screen,
described in Section 5.8.
NOTE: The Phase Transmitter is housed in a weather-resistant roadcase enclosure. The
roadcase MUST be closed and latched, the Current Transformer plug or the connector
cap MUST be installed, and the air vent MUST show a red triangle to provide weather
resistance. The Phase Transmitter roadcase is resistant to rain, snow, oils, dirt, splashing,
etc, but is not submersible.
Descriptions of several methods of setting up the Phase Transmitter follow. There are
many other ways to use the Phase Transmitter. If using a different method, ensure that the
Current Transformers are correctly applied to the phases and ensure that a loop exists for
tracing current.
5.1 Connecting the Current Transformers
Remove the Current Transformers from the roadcase. Make sure that the battery charger
is not accidentally lost at this time. Remove the Current Transformer connector cap, and
connect the Current Transformer plug. Turn the outer plug clockwise until it “clicks”,
locking into place. Locking the outer plug makes sure that the connector is weather-
resistant, and prevents the plug from coming disconnected from vibrations, etc.
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Figure 4. Current Transformer connector on Phase Transmitter
5.2 Current Sensor Installation at Transformers with Rubber Cables
Ensure that the transformer primary is grounded and locked. If the primary is not
grounded there is no path for tracing current, and the Phase Transmitter will not work.
Attach the Current Transformers to the three transformer primary leads.
DANGER: NEVER USE THE CURRENT TRANSFORMERS ON AN
ENERGIZED PRIMARY. FOLLOW ALL COMPANY
PROCEDURES AND REQUIREMENTS IN THE PRESENCE OF
VOLTAGE.
IMPORTANT: Make certain that the phases marked on the Current Transformers match
the phases marked on the transformer. If the Current Transformer phasing does not match
the transformer phasing the Phase Transmitter will send incorrect phase information.
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Figure 5. Proper Installation of Current Transformers at Transformer Elbows
IMPORTANT: Connect the current transformer adjacent to the elbow, between the
elbow and the concentric neutral take-off. The stranded concentric neutral wires that are
twisted together carry the tracing current return and will cause measurements to be
unreliable if they are inside the CT. The single-strand drain wire does not carry current
and does not change the measurements. This is more clearly shown in Figure 6.
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Figure 6. Current Transformer installed on Elbow Detail. The elbow is shown without tape for clarity.
Once the Current Transformers have been installed, follow the rest of the setup procedure
in Section 5.5.
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5.3 Current Sensor Installation at Transformers with Lead Cables
Ensure that the transformer primary is grounded and locked. If the primary is not
grounded there is no path for tracing current, and the Phase Transmitter will not work.
Figure 7. Primary connections showing Lead cables wiped to transformer.
Attach the Current Transformers to the three transformer primary leads.
Figure 8. Current Transformers applied to wiped lead connections.
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DANGER: NEVER USE THE CURRENT TRANSFORMERS ON AN
ENERGIZED PRIMARY. FOLLOW ALL COMPANY
PROCEDURES AND REQUIREMENTS IN THE PRESENCE OF
VOLTAGE.
IMPORTANT: Make certain that the phases marked on the Current Transformers match
the phases marked on the transformer. If the Current Transformer phasing does not match
the transformer phasing the Phase Transmitter will send incorrect phase information.
Once the Current Transformers have been installed, follow the rest of the setup procedure
in Section 5.5.
5.4 Current Sensor Installation for Cables
The Phase Transmitter can be used for verification of cables either aerial or buried,
before splicing or elbows are attached. A loop for tracing current must be established at
the Phase Transmitter end of the cable to be verified, then the Current Transformers can
be installed on that loop.
5.4.1 Create Loop for Tracing Current
Figure 9. Current loops used when phasing unterminated cables.
To make a loop at the Phase Transmitter end of the cable, the center copper conductors
and the concentric neutral straps must be connected together. Use bonding wire and
copper nails as needed to make connections.
Temporarily tie all the concentric neutrals together to make a return path for tracing
current.
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Separately tie each phase copper center conductor to the bundled concentric neutrals.
Insulate the copper conductors and tie wires if they could touch each other. This makes a
loop on each phase for tracing current.
Note: The picture shown is of tri-plex cable, which is no longer used for new
installations. The method of installing bond wire to make a loop for tracing current is the
same for bundled three-conductor cable. The Current Transformers are not shown but
would be connected on the bond wires between the copper nails and the concentric
neutral jumper.
5.4.2 Attach Current Transformers
Clip each Current Transformer onto the tie wire between its phase copper and the
concentric neutral bus. Make sure that the phase copper and the tie wires to the concentric
neutral are insulated from each other. If the phase copper conductors touch each other, a
sneak path for the tracing current can happen. This will make the phases indicate
incorrectly.
Once the Current Transformers are installed, follow the rest of the setup procedure in
Section 5.5.
5.5 Phase Transmitter Setup
5.5.1 Install Current Transformers
Follow the procedure in Section 5.2 to install the Current Transformers in a location
where a transformer is already installed, or in Section 5.3 to install the Current
Transformers on the end of unterminated cables.
5.5.2 Cellular Modem Signal Check
Switch on the Phase Transmitter. After the Phase Transmitter startup completes, the
Phase Transmitter verifies the Cellular Modem has service. This process takes about 1
minute.
Watch the LCD screen to check the Cellular signal. One page of the LCD screen displays
Cellular Modem information. This screen displays “Modem Not Ready” while the
Cellular Modem is starting up. Then, “Modem OK” or “Modem Low Sig” is displayed. If
“Modem OK” is displayed, the Phase Transmitter is ready for use.
Should the “Modem Low Sig” be displayed the Phase Transmitter will still work, but
may be less reliable. Consider moving the Phase Transmitter roadcase to be more directly
under the grate, or further away from any cables or supports that may block the cellular
signals.
The percentage of Cellular Modem signal may be displayed using the Left/Right switch
to change pages until “Mdm RSSI” is displayed. The Cellular Modem signal strength is
then shown in percent. If the signal is less than 10% consider moving the Phase
Transmitter roadcase as described above. See Section 5.7 for more information on the
LCD screen and the information that can be displayed.
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5.5.3 Deploying the Battery Charger for long-term use
If the Phase Transmitter is to be left installed for more than 48 hours the internal battery
may be depleted before measurements are made. To prevent this the Battery Charger may
be deployed which allows for continuous usage of the Phase Transmitter. When the
battery charger is used, the Phase Transmitter will not enter Sleep Mode even if Sleep
Mode is configured.
Plug the Battery Charger into the retractile cord with the coaxial battery charger socket.
The cord and socket is attached to the twist lock connector alongside the Current
Transformer cords.
Plug the battery charger into a 120VAC source.
NOTE: The battery charger is not weatherproof. If needed, protect it by wrapping or
taping to prevent water ingress.
NOTE: Don’t use the internal battery charger connection located on the metal panel
inside the roadcase as the battery charger cord may be damaged by closing the lid. Use
the external charger connection.
5.5.4 Securing the Phase Transmitter
When the Modem Signal Check is complete, check that the battery charger is inside the
Phase Transmitter roadcase (unless the battery charger has been deployed for long-term
use). Close the Phase Transmitter roadcase lid and latch it shut. This is required to
maintain the weather resistance of the Phase Transmitter. Turn the vent knob to show the
Red triangle, which seals the vent for weather protection.
The Phase Transmitter roadcase may be padlocked, if desired, through a hole provided in
the lip by the left-hand latch.
5.6 Phase Transmitter Removal
When phasing operations are complete, remove the Phase Transmitter. If applicable,
ensure that the transformer is grounded. Open the Phase Transmitter roadcase and switch
the Phase Transmitter off.
Unclip the Current Transformers from the primary wires or tracing current loops and
wipe the Current Transformers free of dirt and moisture. Disconnect the Current
Transformer connector by rotating the outer housing counter-clockwise, and install the
protective connector cap. If moisture has accumulated inside the Phase Transmitter case,
dry it to prevent mold and mildew forming.
If the battery charger was deployed, unplug it and wipe it clean of dirt and moisture.
Store the battery charger inside the roadcase.
Store the Current Transformers and their cabling inside the Phase Transmitter roadcase,
as shown on the cover page. Check that the battery charger is inside the roadcase, close
and latch the lid. Some roadcases are equipped with a manual vent, if so equipped turn
the vent knob to show the Green triangle for storage to allow any trapped moisture inside
the roadcase to escape. Charge the internal battery at the first opportunity. See section
5.9.1 for details.
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5.7 LCD Screen Pages
The Phase Transmitter LCD screen displays different messages depending on how the
Phase Transmitter is being used. Screen displays for Self-Test are shown in Section 5.10.
Phase Transmitter LCD screen displays while in normal operation and while sleeping are
described below.
5.7.1 Normal Operation
The Phase Transmitter LCD screen automatically scrolls through a set of pages.
Additional pages of information are available by using the LEFT/RIGHT navigation
switch. A description of the LCD pages is below. Where noted, some pages have
additional details.
This screen displays the version of the software loaded into the
Phase Transmitter. When contacting PSI, Inc. for support, always
mention the software version.
This screen displays the Phase Transmitter serial number. The
serial number, together with the Phone Number, are used to
interact with the Phase Receivers.
System Status Signpost.
This screen shows the remaining capacity of the battery in percent.
See Section 5.9 for screens when the battery is being charged.
This screen shows information about the cellular modem. See
Section 5.7.2 for details.
This shows the status of the Phase Transmitter system, except for
the cellular modem. If there is a system error, a number will be
shown; contact PSI, Inc. for details on how to correct the error.
Note (The following pages are not automatically shown. Use the LEFT/
RIGHT switch to display them).
Control Setpoints Signpost. The Control Setpoints may be
changed using the procedure in Section 5.8.
This is a control setpoint, which controls the minimum length of
time that a Phase Transmitter wakes up for after Sleeping. See
Section 5.8.1 for details.
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This is a control setpoint, which controls how long the Phase
Transmitter sleeps for between checks to see if a Phase Receiver
wants phases. See Section 5.8.2 for details.
This is a control setpoint, which changes the lifetime of a request
from a Phase Receiver to the Phase Transmitter to begin
operating. See Section 5.8.3 for details.
Extended Information Signpost.
This is the telephone number of the cellular modem built into the
Phase Transmitter. The Phase Receiver sends a text message to
this phone number to wake up the Phase Transmitter.
This shows the cellular signal strength being received. This
number updates every 30 seconds. See Section 5.7.2 for details.
This indicates the cellular tower in use.
This is the local time. The time is set from the cellular system. The
time is used to control the Phase Transmitter sleeping, and the
responses to requests for phases from the Phase Receiver.
This is used to show the time zone that is in use. Daylight savings
time is automatically handled
5.7.2 Cellular Modem Signal Strength
Always check for “Modem OK” before leaving a Phase Transmitter installed. The screen
may display “Modem NotReady” if the cellular modem has not picked up a signal yet, as
the modem takes about one minute to pick up a signal when first turned on. The screen
may display “Modem LowSig”, which means that the cellular signal is low in strength.
Use the LEFT/RIGHT switch to scroll to the Mdm RSSI page and check the signal
strength; if the signal strength is less than 10% consider moving the Phase Transmitter
more directly under the grate, or away from large metal structures that may be blocking
the cellular signal.
5.7.3 Sleeping
The LCD screen displays “Sleeping” then a counter of the number
of seconds until the Phase Transmitter will wake up. Pressing any
navigation switch for at least two seconds while sleeping causes
the Phase Transmitter to immediately wake up and check for a
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command from a Phase Receiver.
Note: Sleeping is automatically disabled when the Phase Transmitter’s battery charger is
plugged in.
5.8 Configuration Setpoints
The Phase Transmitter has three configuration setpoints to change its operation. These
are described below.
To change a configuration setpoint, use the PREV/NEXT switch
to display the setpoint you want to change. Then, press the
INCREASE/DECREASE switch to MODIFY and hold until a
black square appears in the lower left corner of the LCD screen
(about 10 seconds). Release the INCREASE/DECREASE switch,
then use the INCREASE/DECREASE switch to change the value
shown on the LCD until it is what you want.
To save the changes to the setpoint, press the PREV/NEXT switch
to ACCEPT and hold until the LCD displays “Saving Done”.
If you decide not to change the setpoint, push the PREV/NEXT
switch to REJECT and hold it until the LCD screen displays
“Reject Changes”. Complete the threshold change within 3
minutes or the change will automatically be rejected.
5.8.1 On Time Setpoint
This setpoint is displayed on the LCD as “On Time 90 Sec”. This controls how long the
Phase Transmitter is awake between periods of Sleeping. The default time of 90 seconds
is set to allow 48 hours of battery life. Setting this to a longer time will make the Phase
Transmitter respond more quickly to a wake up message sent by a Phase receiver but will
drain the battery more quickly. Do not set this below 60 seconds.
If the Phase Transmitter is operated from the Battery Charger, Sleep mode is temporarily
disabled. The Phase Transmitter runs continuously without entering Sleep Mode, so this
setpoint is not used. See Section 5.9.2.
5.8.2 Sleep Time Setpoint
This setpoint is displayed on the LCD screen as “Sleep 300 Sec”. The number shown is
the number of seconds that the Phase Transmitter is in low-power sleep mode between
checks to see if a Phase Receiver is requesting phases. The default setting of 300 seconds
is set to allow 48 hours of battery life. If a longer battery life is needed, this setpoint may
be increased.
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If the Sleep Time setpoint is made longer than the Message Window setpoint (15 minutes
or 900 Seconds by default), it is necessary to also change the Message Window setpoint.
If this is not done, a request for phases from a Phase Receiver may be too old to be acted
on even though it has just been received.
To disable Sleep Mode when operating from the battery, decrease
this setpoint until “Never” is shown. The battery life will be much
shorter than with Sleep Mode enabled. Once saved, the “Never”
setting is permanent until the setpoint is again changed.
If the Phase Transmitter is operated from the Battery Charger,
Sleep mode is temporarily disabled, and the LCD screen will show
the word Sleep in parenthesis. When the Phase Transmitter is again
operated from the battery Sleep Mode will be re-enabled unless set
to “Never”. See Section 5.9.2.
5.8.3 Message Window Setpoint
The Message Window setpoint controls how long the request for phases from a Phase
Receiver is valid. The request contains the time at which it was sent. If that time if further
in the past then the Message Window the request is considered out of date, and the Phase
Transmitter will not connect to the Phase receiver to send phases.
If the Sleep Time setpoint is set to a value greater than the Message Window, the Phase
Transmitter will not reliably connect to a Phase Receiver. If the Sleep Time setpoint is
changed, the Message Window setpoint should also be changed. The suggested value for
the Message Window setpoint is two to three times the Sleep Time setpoint. Keep in
mind the Sleep Time setpoint is specified in Seconds and the Message Window setpoint
is specified in Minutes.
5.9 Phase Transmitter Battery
The Phase Transmitter contains an internal lead-acid battery to provide up to 48 hours of
standby time and 4 hours of operating time from a single charge. The battery capacity is
displayed on the LCD screen in percentage of charge remaining. Use the LEFT/RIGHT
switch to scroll to the “Battery” display on the LCD screen.
Always recharge the battery when finished using the Phase Transmitter. If the battery is
left discharged in a cold area (such as inside a truck in the winter), it may be damaged
and not hold a full charge.
NOTE: If the Phase Transmitter is sleeping, the battery capacity is not displayed. Wait
for the Phase Transmitter to wake up to determine battery capacity.
5.9.1 Charging the Phase Transmitter battery
The Phase Transmitter battery is automatically charged anytime the Phase Transmitter
battery charger is plugged in. The Phase Transmitter battery charger requires 120VAC at
0.3 Amps, and can be operated from line power, a generac, or an inverter rated at 500
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Watts or greater. The Phase Transmitter power switch should be switched OFF when the
battery is being charged and phases are not required. This allows the internal circuits to
control the amount of charge put into the battery and prevents overcharging. If you would
like to operate the Phase Transmitter powered from the battery charger, see Section 5.9.2.
When operating from the battery, the battery remaining capacity is
shown in percent. When the percent remaining decreases to 0%,
approximately one hour of battery life remains.
When the Phase Transmitter battery is charging, the Phase
Transmitter switches on automatically. Instead of a percentage of
charge, the LCD screen shows “Charging”. If phases are not
needed, switch the power switch OFF (the Phase Transmitter will
continue to run until the battery is charged).
When the battery is fully charged the LCD screen will show
“Battery Charged”. If the Phase Transmitter is left with the battery
charger plugged in, the battery will be float charged to keep it
ready for immediate usage.
NOTE: Do not close the Phase Transmitter roadcase with the battery charger plugged in,
as the battery charger wires will be pinched and damaged.
5.9.2 Operating the Phase Transmitter from the Battery Charger
When the Phase Transmitter is used to phase cables in an area where AC power is
available, the battery charger can be used for power. This allows the Phase Transmitter to
run continuously without concern for draining the battery.
Place the Phase Transmitter power switch in the “ON” position, and connect the battery
charger. The Phase Transmitter now runs off the battery charger, with the internal battery
used as a backup power source.
Note: Sleep mode is not required when running from the battery charger and is
automatically disabled while the battery charger is plugged in. When the battery charger
is unplugged, Sleep mode is re-enabled.
NOTE: Ensure that the external battery charge connector adjacent to the Current
Transformer cables is used. Do not use the internal battery charge connector on the metal
panel, as the battery charger wires will be pinched and damaged when the Phase
Transmitter roadcase lid is closed.
5.10 Current Transformer Self-Test
An internal self test for the Current Transformers has been included. This is used to
ensure that all three Current Transformers are operating correctly.
The Self Test requires a current source of between 0.5 and 2.0 Amps AC. An
incandescent drop light connected to a generac, an inverter, or plugged in is suggested.
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NOTE: The Current Transformer must clip around one of the two wires to the drop light,
either Hot or Neutral. Clipping the Current Transformer around both wires will not work.
NOTE: The Phase Transmitter will not transmit phases when operating in Self Test
mode. Do not leave the Phase Transmitter in Self Test mode if you want to transmit
phases. Self Test mode is used to check the Current Transformers only.
5.10.1 Starting the Self Test
If the Phase Transmitter is switched on, switch it off. Ensure the LCD screen is blank.
Connect the Current Transformers. See Section 5.1 for details.
Hold the navigation switches toward MODIFY (DOWN) and NEXT (RIGHT) so that the
toggles point towards each other.
Switch on the Phase Transmitter, keeping the navigation switches held DOWN and
RIGHT.
Hold the navigation switches DOWN and RIGHT until the LCD screen displays
“Testing”. This takes 10 to 15 seconds.
Release the navigation switches. Self Test mode is now operating.
To change to Low Gain mode, hold the navigation switch DOWN
until the LCD screen displays “Test Lo”.
To change to High Gain mode, hold the navigation switch UP
until the LCD screen displays “Test Hi”.
5.10.2 Test Mode, Low Gain
If the Phase Transmitter is not in Low Gain mode, shift to Low Gain mode. See Section
5.10.1.
The Phase Transmitter LCD displays “Test Lo” on the top line, and three numbers on the
bottom line. The numbers update every 10 seconds. The numbers indicate, left to right,
Phase A, Phase B, Phase C. The higher the number, the more current that phase’s Current
Transformer senses.
Test #1, Zero Current Test. Ensure that the Current Transformers are not connected to
any cables. The number reported for each should be less than 4.
Test #2, #3, #4, Single Phase Test. Connect each Current Transformer in turn to the
current source, one at a time. The number associated with each Current Transformer
should increase, while the other two numbers should stay about the same value as seen in
Test #1. The value of the number displayed is controlled by the amps flowing in the
current source and is not important; the increase in the number when current is flowing
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through a Current Transformer is what to look out for. The maximum current that can be
measured in Low Gain mode is about 9 Amps.
5.10.3 Test Mode, High Gain
If the Phase Transmitter is not in High Gain mode, shift to High Gain mode. See Section
5.10.1.
The Phase Transmitter LCD displays “Test Hi” on the top line, and three numbers on the
bottom line. The numbers update every 10 seconds. The numbers indicate, left to right,
Phase A, Phase B, Phase C. The higher the number, the more current that phase’s Current
Transformer senses.
Test #1, Zero Current Test. Ensure that the Current Transformers are not connected to
any cables. The number reported for each should be less than 7.
Test #2, #3, #4, Single Phase Test. Connect each Current Transformer in turn to the
current source, one at a time. The number associated with each Current Transformer
should increase, while the other two numbers should stay about the same value as seen in
Test #1. . The value of the number displayed is controlled by the amps flowing in the
current source and is not important; the increase in the number when current is flowing
through a Current Transformer is what to look out for. The maximum current that can be
measured in High Gain mode is about 1.2 Amps. Applying more than 1.2 Amps in High
Gain mode will cause the current to “bleed through” into the unconnected CT’s.
5.10.4 Ending the Self Test
To end Self Test mode, switch the Phase Transmitter off.
5.11 Reprovisioning Phase Transmitter Cellular Modem
The Phase Transmitter cellular modem is automatically reprovisioned once a month to
keep the cellular network data current.
If the cellular modem needs to be reprovisioned manually, for example if the cellular
phone number has changed, manual reprovisioning may be requested.
To manually reprovision the Phase Transmitter’s cellular mode do the following:
1. Switch the Phase Transmitter OFF. Ensure that the LCD screen is blank.
2. Hold the navigation switches toward HOLD (UP) and PREVIOUS (LEFT) so that
the toggles point away from each other
3. Switch on the Phase Transmitter, keeping the navigation switches held UP and
LEFT.
4. Hold the navigation switches UP and LEFT until the LCD screen displays
“Reprov Request”. This takes 10 to 15 seconds.
5. Release the navigation switches. The Phase Transmitter will reprovision the
cellular modem.
6. Reprovisioning takes between 3 and 4 minutes. When the process is complete the
Phase Transmitter will be ready for operation.
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6 Phase Verification of Cables In Conductors The Phase Receiver can verify phases if certain conditions are met. When these
conditions are met, the user is prompted to perform a Phase Verification. The conditions
are:
Run/Isolate Switch RUN
Left Transformer Online, 100% Signal Quality
Right Transformer Online, 100% Signal Quality
Phase Display Both Left and Right show the same phase
When these conditions are met, the user is prompted to “Press 5 to Verify”.
Pressing the “5” button prompts the user to “Switch to ISOLATE to Confirm”. This
prevents further tracing current transmission and possible mistakes by accidentally
moving the tracing current output wires. Section 4.8 describes the verification process in
detail.
After switching to ISOLATE the user is shown a confirmation screen. A message
describing the verification measurement is stored onto the Phase Receiver’s non-volatile
memory, and is uploaded to a verification message server.
6.1 Verification Records
The Phase Verification records are stored on the Phase Verification Server. Each phase
verification record contains:
1) Time and date of the Verification Record.
2) Splicer Unit: Serial Number of the Phase Receiver in use.
3) Left Transformer: Serial Number of the Left Phase Transmitter Unit.
4) Left Phase: Phase Received from the Left Phase Transmitter Unit.
5) Left Verification Count: Number of repetitions of the same phase by the Left Phase
Transmitter Unit, after 100% signal quality has been reached.
6) Right Transformer: Serial Number of the Right Phase Transmitter Unit.
7) Right Phase: Phase Received from the Right Phase Transmitter Unit.
8) Right Verification Count: Number of repetitions of the same phase by the Right Phase
Transmitter Unit, after 100% signal quality has been reached.
An example is shown below.
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To limit the displayed information to a certain Phase Receiver unit only, enter the desired
serial number in the text box and press “Go”. By default, every phase verification
measurement from every Phase receiver is shown.
The measurements are shown with the most recent first.
To access the web site, use the URL http://www.psinteg.net/dlpid
Log in with the user name and password provided.
The verification records may be printed, simply select “Print” from the web browser’s
File menu.