ANSI solid state, undervoltage relay Type 27D

Solid state relay, definite time, 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.
Typical applications include the initiation of transfer in automatic bus transfer schemes. The type 27D relay has a definite-time characteristic with 2 ranges available : 0.1-1 second and 1-10 seconds.


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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