ABB PTMV Poland 2003 ABB PTMV Division Factory in Przasnysz MV Switch Disconnectors NAL/F and AM.

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ABB PTMV DivisionFactory in Przasnysz

MV Switch Disconnectors

NAL/F and AM

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BU 3420 - MV fuses / MV Switch Disconnectors

BWMW

CEF

SWITCH DISCONNECTORS

Indoor

NAL/F AM

Rotary type:

AIRSWITCH series

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Based on modular principle Simply and reliable design, A lot of additional equipment, Wide range of application with easy installation and maintenance.

BU 3420 - Switch Disconnector type NAL/F

Type NAL / F - INDOOR

Rated voltage [kV] 17.5Pole distance [mm] 150 210 170 170 235 270Rated current [A] 630 800Mechanisms

400 - 630 - 1250K KS A

2412 36360

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12, 17,5 i 24 kV / 400, 630 i 1250 A 36 kV / 630 i 800 A


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• 3-pole switch disconnector and switch fuse combination

• IEC 265-1 (actual: IEC 60 265-1) - 100 close / open operations at 630 A

• Class E1 24kV

• Class E3 12/17,5/36 kV

• IEC 420 (actual: IEC 62271-105) Alternating current switch-fuse combinations

• More than 500 000 units in service world wide

• Production capacity of 25 000 units per annum


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BU 3420 - NAL Switches – main types of switches main types of switches

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BU 3420 - NAL Switches – main types of switchesmain types of switches

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Auxiliary switch2;4;8NO+NC

Motor operation on switch mounted

Shaft extension for Left-Hand side operation

Mechanical interlocking

Earthing switch type E

Operating mechanism

Hand operating type HE(upper part) - bevel gearOperating handle

Auxiliary switch for installationOf fuse interruption

Shunt trip coil for A-mechanism

Hand operating type HE(lower part)-Front bearing

Motor operation mountedin front

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d Quick make earthing switch type E


Earthing switch type EB For separate installation

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Earthing switches with making

capacity

Mounted on pivot side of the

switch or on fuse base

Mechanical interlocking

Earthing switch for separate

installation


Earthing switches

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Type UEMC 40 K3 /NM mounted on the mechanism

Type UEMC 40 A2 mounted on the front panel


UEMC 40 K3

NM 24…220

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1. Latched snap action - type KS

2. Stored spring energy – type A

With two springs

3. Snap action -type K

With one spring

3

1

2


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• Bevel gear

• Connection rod

• Front bearing with cardanic joint- optional blocking coil

• Operating handle

• Shaft extension

- Left – hand side operation

- Mechanical interlocking


Hand operating mechanism type HE:

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Mounting example for hand operating mechanism

90 - Transmission with HE


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• Cable sectionalizer and transformer switch

• Motor switch (with motor fuse CMF)

• Switching of capacitor banks

• Component for local manufactured panels

• Used in switch cubicles

• Compact substation (kiosk)

• Utility and industrial application


Applications

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Application example

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NAL in UniSafe and UniGear cubicleNAL in substation


Applications

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Open switch

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Connecting of the switch

• Connecting main knife

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Connected switch

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Switching off

• flame arc breaking

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BU 3420 – AirSwitch series

The switchboard ROTARY switches and isolators

AM AR/AS

Available in two versions:

AM type switch disconnector (24kV; 400/630A)

AR/AS type rotary isolators (24kV; 400/630/ 800/1250A)

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Air-insulated

Rotary type

630 A breaking capacity

40 kA making capacity

2 positions: LINE – OPEN

Provide segregation between busbar and feeder compartments

Interlocked with a separate eathing switch

Switch Disconnector AM

BU 3420 - Switch Disconnector type AM

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Switch Disconnector AM


Voltage signalling device

Key lock

Door lock

Auxliary contacts

Shunt opening release

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Air-insulated

Rotary type

400, 630, 800, 1250 A rated current

up to 25 kA short time withstand current

Switch Isolator AS/AR

BU 3420 - Isolators type AR/AS

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Isolators AR/AS

BU 3420 - Isolators type AR/AS

Voltage signalling device

Key lock

Door lock

Auxliary contacts

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Switch disconnector applications


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Switch disconnector with fuses

Caption:1 Busbars

2 Switch Disconnector

3 Fuses

4 Earthing switch

5 Cable fixing point

1

2

3

45


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Isolators applications

BU 3420 – Isolators type AR/AS

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BU 3420

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BU 3420 – Switches

EUROPE: WE+CEEAUSTRIA BELGIUM BELARUSBULGARIACROATIACZECH REP.DENMARKESTONIAFINLANDGERMANYGREAT BRITAINGREECEHUNGARYICELANDIRELANDITALYLATVIALITHUANIALUXEMBOURGNORWAYPOLANDPORTUGALROMANIASLOVAKIASPAINSWEDENSWITZERLAND

ASIA: AUSTRALIACHINAHONG KONGINDIAINDONESIAJAPANKOREA NEW ZEALANDMALAYSIA PAKISTANPHILIPPINESSINGAPORETAIWANTHAILANDVIETNAM

MIDDLE EAST:ARAB EMIRATESEGYPTIRANISRAELJORDANLEBANONOMANQATARSAUDI ARABIASYRIATUNISIATURKEYSOUTH&NORTH AMERICA:

ARGENTINABOLIVIABRAZILCANADACHILECOLOMBIAECUADORMEXICOPARAGUAYPERUUSAVENEZUELA

AFRICA: SENEGALSOUTH AFRICATANZANIA

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• Modern machinery

• ISO 9001/14001 certified

• IEC; ANSI, CSA, GOST Standards


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BU 3420

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BU 3420 – switch disconnectors – normal operating conditionsnormal operating conditions

•Maximum ambient temperature +40C•Minimum ambient temperature is -25C•The altitude does not exceed 1000m (3300ft)•The ambient air is not excessively polluted by dust, smoke, corrosive or flammable gases, vapour or salt •Typical conditions of humidity for indoor installations are fulfilled

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BU 3420 - switch disconnectors – Standards

•IEC 60265 Switches for voltage above 1 kV and less than 52 kV•IEC 60694 Common specification for high-voltage switchgearand controlgear standards•IEC 60129 Alternating current disconnectors and earthing switches•IEC 62271-105 High voltage switchgear and controlgear

•Part 105-Alternating current switch-fuse combinations •former name IEC 420

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BU 3420 - switch disconnectors – application application

Altitude correction factors for Test and Rating Voltages

Altitude correction factors for Rated Current and Temperature Rise

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BU 3420 - switch disconnectors – Switch-fuse Switch-fuse rratingsatings

Switch nameplate

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BU 3420 - switch disconnectors – breaking capacitybreaking capacity

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BU 3420 - HV fuses – Coordination with load break switchCoordination with load break switch

Minimum breaking current with switch disconnector coordination

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BU 3420 - switch disconnectors – Operating methodsOperating methods

When using NALF - A or KS operating mechanism are suitable only

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BU 3420 - switch disconnectors – Operating methodsOperating methods

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BU 3420 - switch disconnectors – Coordination with switchCoordination with switch

Transfer current (striker operation) value of the three-phase symmetrical current at which the fuses and the switch exchange breaking duties NOTE Above this value the three-phase current is interrupted by the fuse only. Immediately below this value, the current in the first-pole-to-clear is interrupted by the fuse and the current in the other two poles by the switch, or by the fuses, depending on the tolerances of the fuse time current characteristic and the fuse-initiated opening time of the switch.

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The fuses are incorporated in order to extend the short-circuit breaking rating of the combination beyond that of the switch alone. They are fitted with strikers in order both to open automatically all three poles of the switch on the operation of a fuse and to achieve a correct operation at values of fault current above the minimum melting current but below the minimum breaking current of the fuses The minimum breaking current is normally in the range from 2 to 7 times fuse rated current (dependent of fuse rated current). Naturally the question is what will happen if we get a fault current in the range from minimum melting to minimum breaking current? If this happen, when the last conductor melts off, an arc starts and we get an arc voltage between the fuse terminals as described earlier. The fuse will withstand the arc and the energy dissipated for 200 to 400 ms. Due to the arc voltage the striker system will operate and combined with a load break switch, tripping on signal from the striker, the load break switch will open and interrupt the current before the fuse is damaged.

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That means in the range from minimum melting current to minimum breaking current the fuse gives the signal and the breaker clears the fault. In this way by combining a load break switch with a pre charged operated mechanism which can be tripped by the fuse striker system, we can obtain protection from minimum melting current and up to the max breaking current for the fuse. When we reach a certain fault current level the fuse will break and clear the fault before the breaker is able to open due to the mechanical operating time of the switch (this is normally 40 -70 ms dependent of type) and we do not get any problem with the breaking capacity of the load break switch, the fuse has already cleared the fault when the breaker opens. We will have a certain range where fuse and switch have approximately same clearing time. This happen at the take over current as shown on earlier slide. The switch itself must have a max. breaking capacity which overlaps the take over point. The requirement to a fuse switch combination is given in IEC 62271-105 (former IEC 420). and will determine what max. rated current the fuse can have to be sure you have the necessary safety margin for coordination between fuse and switch.

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BU 3420 - switch disconnectors – general rulesgeneral rules

Low over-currents

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BU 3420 - switch disconnectors – general rulesgeneral rules

Minimum breaking current

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BU 3420 - HV fuses – general rulesgeneral rules

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BU 3420 - NAL Switches – Tightening forcesTightening forces

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BU 3420 - NAL Switches – Assembling mistakesAssembling mistakes

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BU 3420 - NAL Switches – Your questions? Your questions?

ABB PTMV Poland 2003 ABB PTMV Division Factory in Przasnysz MV Switch Disconnectors NAL/F and AM.

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Transcript of ABB PTMV Poland 2003 ABB PTMV Division Factory in Przasnysz MV Switch Disconnectors NAL/F and AM.