Combined overcurrent & earth-fault relay type SPAJ 140 C
Design and principle
The combined overcurrent and earth-fault relay is a secondary relay to be connected to the current transformers of the protected object. The three-phase overcurrent unit and the earth-fault unit continuously
measure the phase currents and the neutral current of the protected object. On detection of a fault the relay
starts, trips the circuit breaker, initiates auto-reclosing, provides alarm, records fault data etc. in accordance
with the application and the configured relay functions.
Product description
-
Phase and neutral overcurrent protection relay for distribution feeders
-
Three-phase, high-set and low-set phase over- current protection
-
Sensitive non-directional high-set and low-set earth-fault protection
-
Integrated circuit-breaker failure protection
-
High immunity to electrical interference and robust aluminum case to class IP54
Technical Data
Brand ....... ABB
Type ....... SPAJ140C (RS 611 006-AA)
Overcurrent unit ....... 1 A / 5 A
Earth-fault unit ....... 1 A / 5 A
Rated auxiliary voltage ....... 80...265 V DC/AC (Type SPTU 240 R1)
Stock and Warrantee
Warrantee ....... 1 year from ABB Thailand
Stock ....... On shelf
For requested more information