Reyrolle 7SR242
The Reyrolle 7SR242 is used as a protection, control, and monitoring relay for two winding transformers of all vector groups, primary configurations/connections, and earthing connections.
The relay functionality also allows it to be applied in auto-transformer and reactor protection schemes.
Enquiry about Reyrolle 7SR242
Basic Features
- Relays are housed in size E8 or E10 cases
- Provides integrated logic to allow the optimal configuration of relay functionality with the relays analogue inputs and binary input/output circuits
- Data communication channels allow access to protection, control, instrumentation, and metering functionalities
- Provides local PC connection via a front USB port and remote connection via a rear electrical RS485 port as standard, with additional rear ports available as options
- 2 levels of password protection
- Circuit breaker trip counters
- Fault, event, and waveform records
- Protection from over-fluxing (24)
- Protection from under/over-voltage (27/59)
- Protection from undercurrent (37)
- Protection from thermal overload (49)
- Protection from overcurrent (50, 51)
- Protection from earth fault (50G, 50N, 51G, 51N)
- Protection from neutral voltage displacement (59N)
- Protection from biased differential (87BD)
- Protection from high-set differential (87HS)
- Circuit breaker fail (50BF)
- Trip circuit supervision (74TC)
- Inrush detector (81HBL2)
- Over-fluxing detector (81HBL5)
- Historical demand record