The new ABB UniGear ZS1 primary distribution switchgear, rated up to 24kV, replaces more than eighteen previous product platforms:
This new modular platform, thought to be unique means, that ABB has been able to reduce the number of switchgear production lines from 47 to just nine. Moreover, the number of switchgear parts has been cut by almost 95% to ensure consistent quality and shorter lead times.
The global market for primary air-insulated switchgear (AIS) in medium
voltage ratings is extremely diverse and highly fragmented, as each country traditionally has its own unique specifications. To meet the specific requirements of switchgear customers in their individual local markets, ABB previously offered 18 product platforms for 12-24kV medium-voltage AIS rated from 12 to 24kV.
ABB has now replaced this large array of products with a single platform that meets the individual specifications of each market, while at the same time giving global operators a standardised product offering consistent quality.
Unique collaboration:
The new UniGear ZS1 switchgear is based on ABB's market-leading ZS1 family, which was first launched in 1986. ABB assembled a team of specialists from around the world to develop the UniGear ZS1 platform and ensure all relevant, market-specific features were incorporated into the design.
The result of that collaboration is a unique, modular design that allows for more than 150 local switchgear requirements, all of which can be
added to the basic UniGear platform. For example, in the UK market ABB has adapted UniGear to provide suitable rear cable box configurations, interlocking, shutter labelling and earthing arrangements.
In addition to rationalising production and reducing the number of parts needed, ABB has succeeded in reducing the width of the panel from 650 mm to 550 mm for feeder applications up to 1250A. This makes UniGear ZS1 the most compact withdrawable AIS 12kV switchgear available on the market today.
Other equipment:
The range of apparatus for the UniGear ZS1 switchboards includes vacuum and gas circuit-breakers and vacuum contactors with fuses. All of this apparatus is interchangeable inside the same switchgear unit. This makes it possible to use a single switchboard-user interface, with the same service and maintenance procedure and operations. A fixed version switch-disconnector unit completes the range of apparatus.
The switchboard can be fitted with conventional (transformers and relays) or innovative (sensors and multi-purpose unit) measurement and protection components.
The picture shows ABB's new UniGear ZS1 primary distribution switchgear.
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