IPR-A2
Phase Over-Current & Ground Fault Relay
Current Protection Relay IPR-A is designed to protect medium voltage lines against over-current and short circuit scenarios present in line fault or ground fault even under disturbances. Currents are measured throughout current transformers (CT) from each line. The information is internally processed in order to take the current protection actions defined under ANSI, IAC or IEC standard.
Applications
- Primary and backup protection for utility feeder, power plants and industrial distribution systems
- Protection of transformers, overhead lines, cables and generators
- Allow the opening of the switch/disconnector within the limits of its capacity, leaving the circuit interruption fuses in the case of short circuit
Protection and Functionality
- (50) Instantaneous over-current
- (50N/50G) Instantaneous ground over-current
- (51) Inverse time phase over-current
- (51N/51G) Inverse time ground over-current
- ANSI, IAC or IEC/BS142 curves included:
- moderately inverse
- normal inverse
- very inverse
- extremely inverse
- definite time
- Overload alarm pickup level
- Accumulated kA per phase on breaker interruption
Features
- CT primary ratio selectable in 5 A steps (10 A to 6000 A)
- Line and ground RMS currents measurement
- 1 trip relay and 2 programmable auxiliary relay
- Control power drop or internal fault relay
- Digital inputs: 1 breaker status - 3 programmable
- Touchpad programming
- Breaker operation and trip failure
Signalling
- LED and LCD display indication
- Phase and ground current indication
- Last trip cause and storage of values
- Indication and storage of fault conditions and their values
- Threshold LED for 50/50 N, 51/51 N
Communication
- Communication port: (1) RS232 and (2) RS485
- Remote programming of the setpoints
- Communication Protocol: Modbus RTU
Accessories for the Feeder Protection Family
Current transformers
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Orion Italia s.r.l
VAT IT01552780338
Via Orsi 35, 29122
Piacenza Italy
Manufacturer of protection Relays & temperature controllers for industrial applications
