ABB UniGear ZS1 Instruction Manual

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95.2
95.1
95.3
Figure 125: Withdrawable part with metering unit
95.1 Voltage transformer
95.2 Cast resin tube (with fuse cartridge)
Figure 126: 95.3 Mini circuit-breakers of transformers
secondary circuits (mounted in the
cabinet of auxiliary circuits as
standard)
6.2.5 Vacuum contactor - type V-Contact
The V-Contact type vacuum contactor is ideal for controlling users in a.c. requiring a high number of
operations. The contactors basically consist of a moulded resin monobloc, where the vacuum
interrupters, moving apparatus, control electromagnet, multivoltage control feeder and auxiliary
accessories are housed.
The monobloc is also the support for assembly of the fuse-holder frame.
Closing of the main contacts is carried out by means of the control electromagnet. Opening is carried
out by means of a special opposing spring. The contactor can be equipped with electrical or mechanical
latching.
The fuses are positioned in special supports to be connected in series between the contactor and the
user. The supports can house fuses in compliance with DIN or BS standards.
For details, please refer to installation manual.
91.15
91.14
91.13
Figure 123: V-Contact type vacuum contactor - front view
91.13 Signalling device ON/OFF
91.14 Operating cycle counter
Figure 124: V-Contact type vacuum contactor - pole side
91.15 MV fuses

ABB UniGear ZS1 Specifications

General

Rated Voltage	up to 24 kV
Rated Current	up to 4000 A
Frequency	50/60 Hz
Rated Short-Circuit Breaking Current	up to 50 kA
Rated Peak Withstand Current	up to 125 kA
Insulation	Air-insulated
Type of Switchgear	Metal-clad
Rated Short-time Withstand Current	up to 50 kA for 3s
Internal Arc Classification	IAC AFLR
Protection Degree	IP4X
Busbar System	Single and double busbar
Type Tested Assembly	IEC 62271-200
Dimensions	Varies depending on configuration
Weight	Varies depending on configuration