ANSI solid state, battery ground detector relay Type 27B

Solid state relay, designed for distribution systems

Circuit-Shield Voltage Relays provide a wide range of protective functions, including undervoltage protection of motors, overvoltage protection, and automatic bus transfer. Inherently high seismic and transient immunity allow the use of these relays in generating stations or substations where the performance of electro-mechanical or other types of static relays is marginal.

The type 27B relay is used to detect grounds on the normally ungrounded DC control power bus and to indicate whether the ground is on the positive or negative conductor.  

Why ABB?

  • Reducing operating costs
  • On-site/Retrofits - Existing panels can be modified and retrofitted at the customer’s site.
  • System installation at the customers site
  • Relays are tested at the customer site.
  • Assisting our clients in modeling their power system

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