HUAYI ELECTRIC

TECHNICAL DATA

LW36A-126/145 Model

OUTDOOR HV SF6 CIRCUITBREAKER

ISO9001 International Quality System Certified Enterprise

China's Well-known Trademark

National Exemption from Inspection Product

ú ú

1. This Manual includes the installation, operation and maintenance of LW36 model SF6 circuit breaker, and also includes

the safety norms that shall be paid attention to and the risk of possible in the above mentioned courses. Any operator shall

carefully read this Manual before installation and operation, and shall not operate the product until he ensures complete

understanding. Please contact with the manufacturer if there are any questions or further information.

2. LW36A-126/145 model H.V. AC SF6 circuit breaker applies to power system of AC 50Hz, 132kV for control and protection,

also can be used as a liaision breaker.

3. The circuit breaker accords with standards of IEC62271-100 and GB/T1984-2003. It takes SF6 gas as insulation &

arc extinguish medium, adopts arc self-extinguish principle and matches with CT30 spring operating mechanism, and has

the advantages of strong breaking capacity, low operating power consumption and high reliability.

4. Service environmental conditions:

Normal service environmental conditions shall meet the stipulations of IEC60694-2002 & GB11022-99:

1) Environmental ambient temperature: -25 +40

2) Altitude above sea level: not exceeding 2500m (126kV); not exceeding 1000m (145kV)

3) Wind speed: 34m/s

4) Daily temperature difference: 25

5) Sunshine strength: 0.1w/cm

6) Monthly average relative humidity: 90%

7) Earthquake acceleration: 0.2g (level), 0.1g (vertical)

8) Ice covering thickness: 10mm

9) Air polluted degree: not exceeding degree stipulated in IEC60507 & Gb5582

10) Installation site: outdoor.

If the user has some special environmental requirements, please further consult with the manufacturer.

5. There are two types of tips respectively and in the Manual. Not executing the related

content of may cause inconvenience or minor injuries; Not executing the content of may cause

personal injury or equipment damage. This two types of tips are both shown in boldface.

2

Attention Warning

Attention Warning

GENERAL AND APPLICATION

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Items

Rated voltage

Rated P.F. withstandvoltage (1min)

Rated lightning impulsewithstand voltage

Unit Data

kV

Rated P.F. withstand voltage under SF6 zero gauge pressure(5min.) kV

Hz

A

95

50

3150

Rated frequency

Rated current

MAIN TECHNICAL PARAMETERS

1. Main technical parameters of circuit breaker table 1

1.5First pole factor

Rated short-circuit breaking current

Rated short-circuit making currentkA

Rated short-time withstand current

Rated peak withstand current

s 4Rated short circuit duration

10Rated out of phase breaking currentkA

Short-line fault breaking current

To ground

Between gaps

To ground

Between gaps

126 145

230 275

265 315

550 650

630 750

40 31.5

100 80

40 31.5

100 80

36 30

1

table 1 continued

The circuit breaker adopts three-phase porcelain pillar-type structure and outdoor design. Three phases commonly match

with a spring operating mechanism, centre location, three-phase linkage, so the appearance is novel and exquisite. The

circuit breaker takes SF6 gas as insulation & arc extinguish medium, SF6 gas of three phase will connect during operation

and the gas pressure and density are monitored by a pointer-type density controller. The arc self-extinguish principle and

optimum design of movement system effectively improve the mechanical efficiency and furthest reduce the operating power

consumption.

As shown in Fig.1, three phase poles are installed at the common base, the control box is hoisted under the centre of

base, and the spring operating mechanism and control unit are inside, the output shaft of mechanism connects with the

crutch arm of central pole.

1. Base

The base is used for supporting three poles and connecting with the control box, is bent of steel plate and can meet IP4X

protection degree. The pressure gauge, name plate and three mounting holes can be viewed from the front of base. Three

No

28

29

15

16

17

18

19

20

21

22

23

24

25

26

27

Items Unit Data

A

ms

u

Mpa

%

ppm(v)

time

uV

mm

kg

31.5

O-0.3s-CO-180s-CO

30 3

75 8

60

40

0.6

0.55/0.50

1

150

6000

500

10

1300

Rated line charge breaking current

Rated operating sequence

Opening time

Closing time

Closing/opening time

Main circuit resistance

Rated SF6 gas pressure ( gauge pressure)20

Alarm/locking pressure ( gauge pressure)20

Annual gas leakage rate of SF6 gas

Water content of gas

Mechanical life

Radio interference level

Creepage distance

SF6 gas weight per circuit breaker

Unit weight of circuit breaker

To ground

Between gaps

3150 3625

3150 3625

No

1

2

3

4

5

6

7

8

9

10

Items

Rated auxiliary circuit resistance

Rated operating voltage of opening/closing coil

Rated operating current of opening/closing coil

Energy storage motor

Electrical energy storage time

Manual energy storage torque

Rated voltage of heater & lighting circuit

Rated voltage of auxiliary switch

Rated current of auxiliary switch

Contact number of auxiliary switch

Unit

V

V

A

V

V

W

s

N.m

V

V

A

Data

DC 220

DC 220

2

DC220 / AC 220

65% - 110%

600

15

30

AC 220

DC 220

10

20

2. Main technical parameter of operating mechanism table 2

PRODUCT STRUCTURE

Rated voltage

Normal working voltage range

Power factor

2

1700 1700

1- Pole

2- Base

25303890

3- Pointer type density controller

4- control box

Name plate-5

2195

Fig.1 Overall Structure of Circuit Breaker from the front

400

310

650

685 1005

800

1800

1350(1

450)

4685(4

925)

1140(1

280)

980

phase SF6 gas inflatable pipeline and pointer type density controller are installed in the base. When un-connecting with the

inflatable valve of pole, the gas in the inflatable pipeline is in a sealed state, and the value displayed on the pressure gauge

is the pressure in the pipeline. There is a T-junctor under the pressure gauge, the vacant joint of which is the inflatable one

of circuit breaker.

The pointer type SF6 density controller (with a pressure gauge) is use for monitoring the density of SF6 gas in the

equipment and sending out control signal, and has the function of temperature compensation. When the SF6 gas pressure

changes due to the variation of environmental temperature, the controller will not act. Only when the gas pressure changes

due to SF6 gas leakage, the controller will send out alarm & locking signal.

The control box is connected to the base by six M20 bolts, and there are moisture-proof & waterproof devices at both the

joint between output shaft of mechanism and B-phase crutch arm and the exits of secondary circuits.

:

1) When un-connecting with the pole, the value displayed on the pressure gauge is the pressure in the pipeline.

2) The value displayed on the pressure gauge is the pressure under 20 .

Attention

2. Pole

Each pole is a hermetic unit. The components of pole from top to bottom respectively are upper outlet plate, interrupter,

lower outlet plate, supporting bushing, insulation drawbar, crutch arm box, operating mechanism, etc. (see Fig. 2).

2.1 Upper/lower outlet plate

Upper/lower outlet plates are used for primary connection, there are outlet wires at both sides of lower one (The front is

the side that opening/closing indicators on control box or a pressure gauge on the base), and the outlet wires of upper one

shall be at the front unless the user has special requirements. The size of wiring holes off outlet plates refers to connection

modes of 3150A and 1250A (see Fig. 3), and the size standard refers to GB5273 standard.

2.2 Interrupter

3

The interrupter is the core part whole installed in the porcelain bushing. It mainly consists of porcelain bushing, fixed

contact base, fixed main contact, fixed arc contact, vent, pneumatic cylinder, movable arc contact, middle contact, lower

supporting base, drawbar and so on (see Fig. 4). Of which, the adsorbent is placed on the top of fixed contact base, the

drawbar connects to the insulation drawbar in supporting bushing and finally connects to outer crutch arm of crutch arm

box. The porcelain bushing of interrupter is made of high-strength porcelain with high strength and good air tightness.

Long-term current carrier loop consist of upper connection plate, fixed contact base, fixed main contact, pneumatic cylinder,

middle contact, lower supporting base and lower connection plate. As breaking current, arc loop flows via fixed arc contact

and movable arc contact, so as to guide the arc. A one-way valve is installed at the bottom of pneumatic cylinder's thermal

expansion room, and a back valve and a pressure release device are installed at the bottom of pressure chamber.

2.3 Supporting porcelain bushing

Supporting porcelain bushing is used for supporting the interrupter and insulation to ground. The insulation drawbar inside

the bushing is used for insulation to ground and mechanical transmission. Supporting porcelain bushing is made of high-

strength porcelain with high strength and good air tightness.

2.4 Crutch arm box

The function of crutch arm box is that transmit the operating mechanism's output action to the insulation drawbar and

finally transmit to the moving part unit of interrupter, so as to fulfil opening/closing operation. The valve installed on the

crutch arm box is used for connecting with the inflatable pipeline in the base. If the inflatable pipeline is not connected,

the whole pole is in a sealed state. The enclosure of crutch arm box is made of aluminium alloy with high strength and

good-airtightness, on which, there are positioning holes for expediently fixing the pole in opening position.

3. Spring operating mechanism

This Manual only simply introduces the structure of principle of the spring operating mechanism. Please refer to Manual

for CT30 model Spring Operating Mechanism.

The spring operating mechanism is installed in the control box and its working principle refers to Fig. 6.

4. Control box

In the control box, there are spring operating mechanism, terminal block of secondary control loop, mechanical counter,

heater and so on. About the detail secondary principle & wiring diagrams, please refer to Page 23, 24.

On the inner name plate, there are manual opening/closing pushbutton, remote-local change-over switch, energy storage

motor switch (see Fig. 7) and status indicators. The operator can visibly observe the state of circuit breaker at any time.

Fig. 7 Inner Structure of Control Box

4

1- Upper outlet plate

2- Interrupter

3- Lower outlet plate

4- Supporting bushiing

5- Insulation pull rod

6- Crutch arm box

Fig. 2 Pole Structure

Outer crutch arm-7

5

Fig. 4 Interrupter Struction

1- Poceilan bushiing

2- Fixed contact base

3- Fixed arc contact

4- Fixed main contact

5- Vent

6- Movable main contact

7- Movable arc contact

8- Middle contact

9- Lower supporting base

10- Pull rod

Fig.3 Plate of Connection Terminal

50

50

50

50

50

10 18

6

A B C D

1

2

3

4

5

6

Closing position Breaking heavy current Breaking low current Opening position

Fig.5 Arc Extinguish Principle

WORKING PRINCIPLE

1. Fixed arc contact 2. Main contact finger 3. Vent 4. Movable arc contact 5. P One-way valve

7. Pressure release valve 8. Pressure release spring 9. Pressure room 11.Thermal expansion room

neumatic cylinder 6.

7

8

9

10

1. Arc-extinguish principle

Once receiving opening command, the rigid moving parts that comprise pneumatic cylinder, movable arc contact, drawbar,

etc. will move downward under the effect of opening spring. During movement process, the fixed main contact finger will

firstly separate from the movable main contact and current will transfer to two closed arc contacts, then the arc contacts

will separate and generate arc.

As breaking heavy short-circuit current, arc energy between arc contacts is strong, hot airflow of arc zone will flow into

the thermal expansion room, where heat exchange is done and generates low-temperature, high-pressure gas. Then the

one-way valve will close because the pressure in thermal expansion room is higher than that in pressure chamber. When

current exceeds zero, the high pressure gas in thermal expansion room will blow to gaps to extinguish arc. During opening

operation, the gas pressure in pressure chamber will be compressed little by little, however, the spring release valve at bottom

will open when the gas pressure reaches a certain value, and pressing gas and releasing gas will be done at same time to

eliminate more counterforce of pressure gas, so as to greatly decrease operating power (see Fig. 5-B).

As breaking low current (usually lower than few thousands of ampere), it generates low gas pressure in thermal expansion

room due to low arc energy. Here, the pressure in pressure chamber is higher than that in thermal expansion room, the one

-way valve will open and the compressed gas will blow to gaps. When current exceeds zero, the gas will blow to gaps to

extinguish the arc (see Fig. 5-C).

2. Energy storage of closing spring

AC/DC dual-use motor drives the shaft of pawl rotating, transmit torque to the big and small pawls through 90 commutation

to push the ratchet rotating, then make the closing spring compress and start storing energy by drawbar. After passing through

the dead center position, motor will cut off power supply by a micro switch. (motor has over-current protection and 15s forced

power-off function.) The shaft of pawl is given an anti-clockwise rotational torque by the closing spring, and the torque is locked

by the closing holding detent through B-pin.

3. Closing operation

The electrified closing coil will drive the closing detent clockwise rotating to release the closing holding detent, then jack

up B-pin to release the ratchet, and the held closing spring will release energy to drive the cam rotating. The cam strikes the

roller to make the crutch arm clockwise rotate, then drives the drawbar to make the fixed and movable contacts quickly

7

close, consequently, closing operation is completed.

In addition, the opening spring connected with the crutch arm will be simultaneously compressed and store energy

during the closing operation, .

4. Opening operation

After receiving opening command, the opening coil will be electrified, drive the opening detent clockwise rotating and

the opening holding detent will also clockwise rotate to release A-pin. The inner crutch arm will clockwise rotate under effect

of the opening spring, then drive the drawbar to make the fixed and movable contacts quickly separate, consequently,

opening operation is completed.

5. Reclosing operation

When both closing spring and opening spring are in energy storage state, reclosing operation will be completed once

the command of O-0.3s-CO is applied.

PACKAGING, TRANSPORTATION AND STORAGE

1. Packaging

The circuit breaker has 5 packages (see Fig.8). 3 poles are separately packed by wood cases, the control box is packed

and bound by the burlap together with the base, supporting pole and interphase links and they were fixed inside the base.

The packing list and attachment files are in the control box. Besides, there is a accessory box for packing such accessories

as installation and debugging tools, expendables and fasteners.

:

1) Each pole is filled with 0.03 0.05MPa SF6 gas in advance.

Attention

Fig. B: Closing spring store energy(Closing position, closing spring release)

Fig. 6 Principle Schematics of Spring Operating Mechanism

Outer crutch arm

Shaft of pawl

Pawl

Shaft of regulation crank axis

Inner regulation crank

A-pin

Opening holding detent

Interrupter

Cram Shaft of ratchet

Opening spring

Closing spring

B-pin

Energy storage holding detentClosing detent

Closing coil

Opening detent

Fig. A: Opening operation ( )Closing position, closing spring store energy

Fig. C Closing operation(Opening position, closing spring store energy)

Opening coil

8

2) Each pole shall be in opening state and the location pin shall be inserted.

3) Both opening spring and closing spring are in release state and the insurance pin shall be inserted.

Before installation, please check and accept each package unit and accessories according to Packing List. If any question,

please contact the manufacturer immediately.

:

1) Incorrect lifting method will cause the tilt/collapse, as a result, the product will be damaged and fatal accident will happen.

2) During installation, improper bolts or incorrect fastening mode will also cause the damage of equipment and fatal

accident as a result of tilt/collapse. The fasteners for installation shall be the spare parts in the gadget box supplied by the

manufacturer, and shall be fastened by the torque spanner.

The bolt strength shall be over 8.8 degree, and the fastening torque shall be M6:8 1Nm, M8:22 2Nm, M10:45 5Nm,

M12:70 7Nm, M16:200 20Nm and M20:400 40Nm.

:

1) During the entire installation process, there shall be skilled and experienced professional people for spot guidance.

2) When installing the poles, please use step ladder or elevator, that the ladder leans against the pole is strictly prohibited.

3) That any tool or lifter strikes the porcelain bushing is strictly forbidden.

Warning

Attention

2. Transportation

Each package shall be removed by the forklift or lifted by the crane (lifting weight 2 tons). Horizontally move and lightly

put down during transportation. Long-distance carrier may be truck, train or ship, the pavement standard for truck transportation

shall be not lower than 3 grade. During transportation, loading and unloading, the packed circuit breaker shall not be overturned

or inverted, intensive vibration and stroke are prohibited.

1) The porcelain cargo is brittle material, non-standard transport will cause damage to the porcelain.

2) Strictly forbid transportation or remove if the filled gas pressure of pole is above 0.1Mpa.

3. Storage

The package shall be stored indoor. If it must be placed outdoor, the package shall be paced at ventilated location and

the wood cases shall be placed on the plank and covered by a paulin for fear of wet ground. For a long-term storage, the

anti-condensation heater of control box shall be used. The longest outdoor storage term shall not be over half a year.

The gadget box shall be stored indoor because the accessories are not designed for outdoor.

Warning:

INSTALLATION

Dim.: 3100 780 690; G-300kg/pcs Dim.: 4050 2290 880; G-500kg/pcs

Package for frames

Dim.: 650 300 200; G-100kg/pcs

Package for gadget boxPackage for body

Fig.8 Package Unit

1. Preparation of foundation

The requirement of foundation is shown in Fig. 9.

Routine inspection and maintenance shall be done during operation. The height difference between the two foundation

surfaces shall not exceed 2mm, the levelness of each foundation surface shall not exceed 2mm. 8 pieces of anchor bolts

are supplied by the manufacturer.

9

S.N. Name Spec. Unit Qty. Remarks

1 Steel channel 10*400 1 Galvanized

2 Steel pipe L=1100 pcs

pcs 1

1 Galvanized

1700 1700

3890

46

85

(49

25

)

2530

13

50

(14

50

)

400

310

650

1005685

98

0

80

0

21

95

11

40

(12

80

)

18

00

360

360

600

600

2530

8 M24-6g

Land building

1110100

250

250

Land building200 200

220

Installation of Foundation

5050

5050

50

15 8}

Welding

800

300

1

2

Dim. of installation holesof busbar wiring board

(1:6)

Installation ofcable pipe

(1:10)

200

360

800

80

Cutaway view of installation of anchor bolt

Remarks:

1. The pre-embedded M24 anchor bolts shall be 80mm exposed and

match with double nuts, the size deviation is 1mm. The level & L/R

deviations of two foundation surfaces do not exceed 4mm.

2. M24 800 anchor bolts are supplied by the manufacturer.

3. Operating force: pull force upward = 1800kg, level force = 2500kg,

T.W. = 1300kg;

4. The earthing of circuit breaker is 50 5 galvanized flat steel.

5. The dimensions in bracket are of 145kV circuit breaker.

Outline Drawing of Circuit Breaker

10

2. Installation of base & control box

Before install the components of base, please remove the plastic packing and take down both 4 covering plates of lifting

holes and 3 covering plates of handle holes at both sides of base.

Slightly lift the components by means of a crane and remove the pad wooden at the bottom, then lift and carry it to the

foundation, and fix it on the foundation by 8 nuts M24.

After install and fasten the base and control box, calibrate the level of base less than 2mm by the level gauge.

3. Installation of poles

3.1 Inspection before installation

Lift out three poles from wooden case and horizontally move to the strong ground.

Pad woodens shall be laid both ends of pole to prevent the porcelains from breaking.

Examine whether each porcelain is damaged or has some cracks due to transportation. If any, please contact with the

manufacture in time.

If gas charging is done when the porcelain is damaged or has some cracks, the explosion may happen and

endanger personnel safety.

Firstly, check the gas tightness before install the poles. There is a joint of gas valve on the crutch arm box of each pole,

remove the protection nut of valve and slightly open the valve. That the sound of gas deflating can be heard means good

gas tightness, or not, it means that the pole has some leakages or has been damaged during transportation.

1) Remove the protection nuts before install the poles.

2) Opening location pins on the crutch arm box keep the transmission crutch arm and crutch arm box are locked

in opening state. Each pole is open before installation, please do not draw out the pin during installation.

3) The contact interface of all bolts, poles and base should be painted with water-proof glue before installation.

3.2 Installation of B pole

B pole shall be installed first. The pole which has double crutch arms and the centre distances between holes of crutch

arms respectively are 125mm and 100mm is B pole. Erect B pole.

While erecting B pole, lay the rubber plate or wooden plate of over 10mm thickness against the side of crutch

arm box side to protect the crutch arm box from damage when it touches the ground.

Lay the pole at the opening in the middle of base, fasten it with bolt M20*65 (as per Fig. 12) which passes though the

hole from bottom to up and fasten the upper end with nut, check the installation dimensions according to Fig. 12. Connect

2 NOS operating linkages with the crutch arm in opening state (connection mode as per Fig. 13) with 12 pin which shall

be painted with silicon grease. Do not pull out the location pin while connecting. Lock the transmission pin with M16 bolt and

catch plate after finish connection.

1) When lay the pole at the opening of base, please gently lift and lay down to prevent the porcelain damaging

due to strong vibration.

Attention:

Warning:

Attention:

Attention:

Warning:

Fig. 10 Installation of Base

11

Fig. 11 Lifting & Transportation of Poles

2) Forbid lifting the pole in gas-charged state (gas charging pressure over 0.1Mpa).

3) The head of bolt M20*65 should be under the through hole, or else the operating linkage will bump against the bolt

during operation. The side installed the linkage is fastened with two special bolts M20*65, the other side is fastened

with two common bolts M20*65.

Pole -1

Drive pin -2

Base -3

Operating linkage -4

Crutch arm -5

Output shaft of mechanism -6

A B C

Fig. 12 Assembly of Poles

3.3 Installation of A, C poles

Erect A pole and lay it at the A phase opening of base (The left is A phase while face to the circuit breaker.), the side

installed the linkage is fastened with two special bolts M20*65, the other side is fastened with two common bolts M20*65.

Connect the operating linkage with the crutch arm of A phase in opening state with 12 pin which shall be painted with

silicone grease. Do not pull out the location pin while connecting.

The installation of C pole is same as A, B pole.

After the two operating linkages are installed, fasten the three poles with the setting torque .

1) While fastening A, C poles at the base, please do not fasten them too much first so that A, C poles can be

moved to adjust the length deviation of connecting the operating linkages.

2) While connecting the operating linkages, the washer shall be laid between the crutch arm and linkage

so as to ensure that the forced direction of linkage keeps same with the movement direction .

Attention:

12

1. Crutch arm 2. Operating linkage 3. Operating linkage 4. Drive pin 5. Adjustable washer

C B A1

2

3

4

5

3

5

Fig.13 Location of Linkage

3.4 Connection of operating mechanism

Connect the output shaft of the operating mechanism with B phase crutch arm. Which connecting, slightly poke at the

big crutch arm in mechanism thru the assembly hole to make the joint of output shaft swing from top to bottom, so as to

connect the output shaft with B phase crutch arm easily with 12 pin reference to Fig. 14. After connection, lock the trans

-mission pin with bolt M16 and the catch plate.

4. Connection of SF6 gas pipeline

Take away the protection covers of the pipeline joints and the valves, clean the surface of joints and valves with a cloth

or paper dipped with a little absolute ethanol, put on the O-type gaskets and paint with the right amount of sealing glue, then

connect them to the crutch arm boxes.

Respectively connect the pipeline joints with the valves of three poles. Please don't fasten first. S

5. Earthing

There are earthing terminals at the base and on the poles, the user can select the earthing according to the actual

requirements. Please polish the contact surface of joints with the emery cloth.

6. Installation of primary connection terminal plates

The outlet wires of lower outlet plate can be at both sides (The front is the side that opening/closing indicators on control

box or a pressure gauge on the base), and the outlet wires of upper plate shall be at the front unless the user has special

requirements. While installing the upper terminal plate, remove the lifting rings on the top of pole first and the 5 screw holes

lightly open the valve

and that the sound of gas deflating can be heard means normal, then fasten quickly and fasten the connection screws with

a spanner. The fastening torque shall be 30Nm.

1

2

3

4

5

6 Fig. 14 Connection of Operating Mechanism

1. Pole

2. Drive pin

3. Base

4. Operating linkage

5. Crutch arm of B-pole

6. Output shaft of mechanism

13

for connecting the upper terminal plate will be reserved. Please polish the contact surface with the emery cloth until shinning,

then clean it with the ethanol and evenly paint the surface with a thin layer of conductive gel. Fasten the upper terminal plate

with five bolts M16.

7. Connection of secondary wires

There are heat-shrink sealing tubes for connecting the secondary wires on the lower cover of control box. The user can

connect the secondary wires according to the connection diagram.

1) The secondary wires must be connected in non-electrified state.

2) The secondary wires must be connected after the closing/opening springs of operating mechanism are released.

8. SF6 gas charging

After finish the connection of SF6 gas pipeline, connect the gas charging device, then charge the three poles with SF6

gas thru pressure-reducing valve, gas charging pipe and the joint under pressure gauge of base, details as per Fig. 15.

Before gas charging, first wash pressure-reducing valve and gas charging pipe for 3-5s with SF6 gas so as to expel the air

and water inside the pipeline. Charge the pole with gas one by one. During gas charging, the pressure indication of pressure

-reducing valve shall be below 0.62MPa, keep watch for the values of pressure-reducing valve and pressure gauge, stop

gas charging if the value reaches 0.62MPa. After finish gas charging, remove the joints of gas-charging device and base

and keep them well. .

1) The value displayed on the pressure gauge of pointer type density controller is the pressure under 20 .

2) Before gas charging, pack the porcelain with special nylon net to prevent it from exploding due to the damage

during transportation or installation, as a result,

3) It is normal that the frost occurs on the gas charging pipe. That adjust the pressure-reducing valve to appropriately

reduce the flow speed can prevent the pipe from frostbiting. Charge the pipe with gas one by one (Namely,

Close its valve once the gas pressure of pole reaches 0.6MPa, then charge another pipe with gas, until three

poles are charged with gas). Please ensure that SF6 gas pressure of three poles reach rated pressure, then

open the Y-shaped connector to ensure the three poles through.

4) The gas charging pressure can be up to 0.62MPa.

Attention:

Attention:

endanger personnel safety. (Although its possibility is very small)

SITE TEST AFTER INSTALLATION

1. Try operation

After installation ,CB is in opening state and the closing spring is of energy non-stored.

1) Before operation, please ensure that the safety pins of operating mechanism and the location pins on theWarning:

1 2 3 4 5

to pole

1. Bottle for SF6 gas 2. Pressure-reducing valve

3. Gas charging pipe 4. Y-shaped connector

5. Pressure gauge

Fig. 15 Connection of SF6 gas charging devices

14

crutch arm box are pulled out, and check whether there are some barriers in the movement direction of

CB or not, specially ensure that the vertical distance between the fixed bolt on the crutch arm and the level

operating linkage is over 20mm (as per Fig. 12).

2) The primary terminal shall not connect with high voltage system.

3) Anyway, SF6 gas pressure must not be lower than 0.3Mpa, or else it may cause CB's mechanical damage.

4) Check whether all pins are tightly locked or not.

5) It is best to adopt electric remote control for try operation. Before operation, all operators should keep 30m

away from CB or stand behind the shield.

6) Anyway, sing-phase or double-phase operation is prohibited.

Do both opening operation and closing operation for five times, and do standard cycle operation for three times.

2. Inspection and test after installation

2.1 Mechanical operating characteristics

Record energy storage time, opening time and closing time during opening/closing operation.

2.2 Resistance of main circuit

Measure and record the resistance of main circuit with main-circuit resistance tester in closing state.

2.3 Insulation resistance

Measure and record the insulation resistance between gaps and to ground in opening and closing state.

2.4 P.F. withstand voltage

If possible, do power frequency withstand voltage test and record the data.

2.5 Inspect the performance of pointer type density controller

Close the valve of crutch arm box, connect the vent joint with the gas charging joint in the base, slightly remove the nut

to make SF6 gas inside the pipe slowly leak. Once SF6 gas pressure falls to the alarming pressure, alarm will arise; When

the pressure falls to the locking value, check whether CB is locked or not, then remove the vent joint and open the valve of

crutch arm box(one phase), monitor whether the pointer-type density controller will reset or not.

After the above mentioned inspection work, open the valves of crutch arm boxes on three poles, if SF6 gas pressure is

below 0.6MPa, charge the pole with gas to rated pressure with gas charging device. After gas charging is completed, remove

the gas charging device and keep it well, meanwhile, put on the protection nut of gas charging joint inside the base.

2.6 Leakage detection

Detect the leak tightness of all sealing surface of CB with the leakage detection, special for the gas charging pipeline

and joints. If any, remove the joint, and check whether there is something on the sealing surface or O-type gasket is damaged.

After the corresponding disposal, detect the leak tightness again. If find that there is any leak on the sealing surface of pole,

please advise the manufacturer to resolve it in time.

2.7 Micro moisture measurement

Connect the pressure-reducing valve, pipeline and micro-moisture tester with the gas charging valve to measure the

moisture content inside the gas room. The measured data shall be compared according to ambient temperature. The moisture

content shall not exceed 150ppm (V/V, 20 ) while check & acceptance, and it shall not exceed 300ppm (V/V, 20 ) during

operation.

2.8 Check whether the changeover of both temperature & humidity controller and heater are normal.

2.9 Connect the primary busbar and the primary terminals of CB, the connection direction is up to the spot situation.

While connecting, polish the contact surface with the emery cloth until shinning and clean it with a white cloth dipped with a

little absolute ethanol.

2.10 Wash all the porcelains with clear water.

2.11 Before commissioning, check test items again, recheck the test data, and fill in the Installation Inspection & Test

Report in duplicate, the users and manufacturer respectively hold one for reference as original data.

3. Clearance of site

So far the installation of CB was completed, you should put on all the covers and keep all the removed parts in a safe

place for future use.

15

OPERATION AND MAINTENANCE

1. Routine inspection and maintenance during operation

1.1 Visually check whether the porcelains have the defects in operation, such as the crack.

1.2 Observe the gas charging pressure of circuit breaker and record it.

1.3 Observe the opening/closing indicators on the control box and the position of crutch arm on the crutch arm box, to

make sure that the state of circuit breaker is normal.

1.4 Observe the degree of corrosion of the fasteners and frame, and record them.

1.5 Periodically inspect whether the changeover of heater is normal or not.

1.6 Observe whether the connection of primary wires may strike fire or not.

2. maintenance

SF6 circuit breaker is maintenance free circuit breaker, but once maintenance every three years can ensure that the

circuit breaker operates in good state. Maintenance shall be carried out under power cutoff for several hours. The maintenance

items mainly include as follows:

2.1 Inspect and clean the surface of porcelains.

2.2 Inspect the corrosion status. Repair the paints if any corrosion; Replace the fasteners if any rust.

Please replace the fasteners one by one. That replace them at the same time may cause personal injury or

damage the equipment because the poles are gas-tighness pressure containers.

2.3 Inspect whether the fasteners are loose or not, if yes, fasten it.

2.4 Inspect whether the primary terminal plate is overheated and off-color, if yes, polish the contact surface again and

fasten them.

2.5 Lubricate the moving parts of mechanism.

2.6 Measure the moisture content and record the data.

2.7 Measure the main circuit resistance and record the data.

2.8 Inspect whether the secondary connections are firm or not, whether the electric instruction is reliably conducted.

3.0 Heavy repair

The heavy repair is mainly overhaul for the interrupter. While repairing, the user would better do it under the site instruction

of the professional dispatched by the manufacturer. The circuit breaker will need the overhaul under the following situations:

1) Continuously operate for 20 years;

2) Mechanical operation time is over 2000 times;

3)Full-capacity(40kA) accumulative breaking time is over 20 times.

Warning:

16

time

kA

10000

3000

2000

1000

100

20

1 10 40 100

ATTACHMENT TECHNICAL FILES

Operation Instruction

Packing List

Certificate of Conformity

Delivery Inspection Report

Operation Report

1

1

1

1

2

ORDER NOTICE

Please specify the following information when ordering:

1. The model and name of circuit breaker;

2. Rated voltage, rated current and breaking current;

3. Voltage of control loop;

4. Rated voltage of motor;

5. The name and quantity of spare parts, special tools and special equipments.

17

Temperature( )

De

ns(k

g/m

3)

50

Pe

Ps

30

20

10

Pj

5040

Temperature Pressure Curve of SF6 gas

30

Pe- Rated pressure of SF6 gas in CB

Pj

Ps

- Alarming

- Locking

pressure of SF6 gas in CB

pressure of SF6 gas in CB

20100-10

ANNEX-1 FEATURES OF SF6 GAS

-20-30

Liquefaction line

-40

Pressure(MPa)

-50

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

SF6 gas was invented in this century, which is widely

due to its outstanding insulation performance and arc extinguishing performance. Under normal temperature, SF6 is

a colorless, odorless, innocuous and transparent upstanding chemical stability. The atomic weight of

SF6 is 146, namely about 5 times of atmosphere, so the gas leaked in the atmosphere will deposit on the earth's surface.

As same as others gas, the pressure of gas will change along with temperature. For state

curve of SF6 gas is as follows

used in high voltage and extra-high voltage switch equipments

gas

inert gas, which has

SF6 this circuit breaker, the

18

2. Offered spare parts according to order

NAME SPECIFICATION QUANTITY REMARKS

Anchor bolt M24 800

M24 nut, washer, spring washer

M20 65 bolt, nut, washer,

spring washer

M6 15 bolt, catch plate

12 pin

20 pin

Waterproof glue

Vacuum silicone grease

Anaerobic adhesive

Conductive gel

O-ring of vavle

SF6 gas

Gas charging tool

Slow opening tools

8.8 degree

D05

7501

DJG-

Stainless steel

HX807

8 PCS

8 PCS/each

12 PCS/each

16PCS nutM24

GB/T799-1988

a small steel bottle

Including pressure-reducingvalve siphonium joint

including ratchet spanner

NAME SPECIFICATION QUANTITY REMARKS

ANNEX-2 LIST OF INSTALLATION TOOLS & SPARE PARTS

1. Attachment accessories and auxiliary materials

4 PCS/each

3 PCS

1 PCS

5 boxes

1 box

1 PCS

1 PCS

3 PCS

15 kg/set

1 set

1 set

Opening coil

Closing coil

Motor

Travel switch

SF6 gas

1 PCS

1 PCS

1 PCS

1 PCS

15 kg/set

19

3. Offered special tools according to order

4. Offered special equipments according to order

NAME SPECIFICATION QUANTITY REMARKS

Speed measurement tool of CB 1 set

NAME SPECIFICATION QUANTITY REMARKS

SF6 gas detector

Micro moisture detector

Tester of main loop resistance

Tester for mechanical characteristic

Oxygen pressure-reducing valve

Gas-filled tube(both ends with joints)

Vacuum pump

1 set

1 set

1 set

1 set

1 set

1 set

1 set

20

USER

MODEL OF CB

INSTALLATION UNIT

NAME OF SUBSTATION

SERIAL NUMBER

TIME OF INSTALLATION

WORKING CONTENTSNO

1

2

3

4

5

6

7

8

Installation of 3 pahse operating linkage

Connect B phase with operating mechanism

Connect tube and charge gas

Connect secondary wires

Remove the packing and

check the package units:

a. Poles 3PKGS

b. Base and control box 1PKGS

Installation of base & control box

Installation of bracket

Installation of foundation

Installation of poles

B

A

C

Try operation

5 times of closing operation

5 times of opening operation

3 times standard cycle operation

REQUIREMENT RESULT REMARKS

8pcs M24

anchor bolts

4pcs M20

stainless bolts

per phase

65

12 pin

20 pin

0.60MPa

2of4are specially

made.

Accessory box is

packed inside base

package.

Base package can

be transported to

the specified site

after the signing of

contract.

ANNEX-3 REPORT OF INSTALLATION AND TEST

21

TEST & TEST BEFORE OPERATION SPECIFICATION RESULT REMARKS

mechanical characteristic

energy storage time of spring

closing time

opening time

check manual operating device

check anti-jump device

Main loop resistance

Insulation resistance

P.F. Withstand voltage

Leakage detect

Micro moisture detect

Record operation time of CB

Clear the spot and cover the cover plate

Connect primary wire andprepare for operation.

Alarming pressure

Locking pressure

40

230kV

1%

150ppm

15s

75 8ms

30 3ms

0.55MPa

0.50MPa

10

11

12

13

Inspector of user:

Director

Date

Inspector of factory

Director

Date

The additional test item after consultation:

22

NOTE:

1. The position of aux. switch is the

opening position of CB.

2. The relay trips in exciterless state

3. Gas density relay in pressureless state

4. CB Q1-Q4 in opening state

5. State relation between limited switch

SP and closing spring

6. S5 in remote position

7. SBT1/2: advanced NO contacts

8. Section of conductors: 2.5mm2

9. Color of conductors: Heating circuit is

white, earth circuit is green, other

circuits are black.

10.

NONC

NO of time delay closing

11. Connected with monitor circuit, current

shall be less than 5mA.

12. If other anti-tripping measures instead

of this anti-jump circuit, X2/4,5 can be

released.

Rotation operation

Button operation

SP

Close

Open

Sate of closing spring

energy non-stored

energy stored

23

24

Office Add: No.138 Ningkang W. Road,Yueqing City,

Zhejiang, P.R. China P.C.:325600

Factory Add:

P.R.

Tel 0577-62558769 Fax 0577-27898866 / 62538979

http://www.heag.cn E-mail: sales@heag.com

Weisi Road, Yueqing Economic Development zone

Yueqing, Zhejiang, China