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HOME ⊙ ABB ⊙ ABB V-Contact VSC Medium voltage vacuum contactors
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ABB V-Contact VSC Medium voltage vacuum contactors

F: | Au:FAN | DA:2025-07-03 | 704 Br: | 🔊 点击朗读正文 ❚❚ ▶ | Share:
The energy needed for operation is not supplied directly by the auxiliary power supply, but is always “stored” in the capacitor which acts as an energy accumulator, and therefore operation always takes place with constant speeds and times, independ ently of the divergence of the power supply voltage from the rated value.

The auxiliary power supply has the only aim of keeping the capacitor charged.Consumption is therefore minimal. 

The power required is less than 5 W. In order to re-instate the rated power value in the capacitor after an opera tion, there is an inrush of 15 W for a duration of a few tens of milliseconds.

For the reasons indicated above, both for the DCO and for the SCO version it is necessary to supply the auxiliary circuits which recharge the capacitor with a continuous auxiliary power supply of 5W (this value can reach 15W for a few milliseconds immediately following each operation).
Careful selection of the components and a precise design make the electronic multi-voltage feeder extremely reliable, unaffected by electromagnetic interference generated by the surrounding environ ment and free of any emissions which may affect other apparatus placed in the vicinity.
These characteristics have made it possible for the V-Contact VSC contactors to pass the electromag netic compatibility tests (EMC) and obtain the CE mark.

Interfacing shafts

These can be used to interface the apparatus with the kinematics of the switchgear to make interlocks and/or signals.
The interfacing shafts are available in two different lengths (A = 22 mm and 70 mm) and can be mounted on one or both sides of the contactor (as indicated in the following table)

Operation counter

Mechanical operation counter for fixed versions, electric operation counter for withdrawable versions.
This is a device which counts the contactor closing cycles 3 Undervoltage function (only available for DCO)
First of its type, the V-Contact VSC contactor is fitted with an undervoltage function with selectable delays of 0; 0,5; 1; 2; 3; 4; 5 s.
This accessory must be specified at the time of order because it cannot be mounted at a later stage.
Extended connections (terminals)
These allow the centre distance between terminals to be taken from 65 mm to 92 mm.
This accessory must be specified at the time of order because it cannot be mounted at a later stage.


Adapter for application of fuses

The kit includes all the accessories needed to adapt and mount three fuses(according to DIN Standards with dimension e less than 442 mm; according to BS Standards with dimension L less than 553 mm).

The kit can be installed directly onto the fuseholder supports. 

The fuses must have dimensions and striker of average type according to DIN 43625 and BS 2692 (1975) Standards. 

The electrical characteristics must conform to the IEC 282-1 (1974) Standards.

To select the fuses, see “Conditions of use according to the load” - chapter 3.
The adaptation kits are available in the following types:
3A For fuses according to DIN Standards with distance e = 192 mm
3B For fuses according to DIN Standards with distance e = 292 mm
3C For fuses according to BS Standards (2 x 8 x L = 235 mm)
3D For fuses according to BS Standards (4 x 10 x L = 305 mm)
3E For fuses according to BS Standards (4 x 10 x L = 410 mm)
3F For fuses according to BS Standards with distance L = 454 mm.


Connections alternative to the fuses

The kit includes three flat copper busbars and fixing screws to be installed when the fuses are not needed.
The kit can be installed directly onto the fuseholder supports
Position contacts for connected/isolated position in the truck
These signal the position of the truck in the enclosure/PowerCube module.

The kit includes a set of 10 auxiliary contacts. 

This accessory must always be requested for contacts to be used in UniGear type ZS1 switchgear if the same application is not already present on the fixed part.


Isolation lock

Isolation lock for UniGear type ZS1 switchgear and PowerCube modules.
It prevents the apparatus from being racked-in if the unit door is open.
This lock only works if the door of the switchgear/enclosure is also fitted with the corresponding lock.


Locking magnet in the truck

This only allows the withdrawable contactor to be racket into/out of the enclo sure with the electromagnet energised and the contactor open
The table below shows the power supply voltages available.
10Lock for different rated currents (only withdrawable versions)
This prevents insertion of the plug-socket and therefore apparatus closing, in a panel provided for a circuit-breaker.
This lock, which is compulsory for UniGear switchgear, requires the same lock provided on the enclosure / switchgear

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