FEEDER PROTECTION RELAY
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ASHIDA has developed Directional Feeder Protection Relay ADR245B. ADR245B is communicable relay having latest protocols like IEC61850.
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FEEDER PROTECTION RELAY
- 5. Functional Overview: Key Protection & Control Functions: • Two Independent Settings Groups • Directional / Non Directional Phase & Ground Over Current Function (50/51/51N/51N/51V/67/67N) • Four Independent Stages for Directional/Non Directional Phase Over Current Protection • Three Stages of Directional/Non Directional Ground Over Current Protection • Internally Derived / Externally measured Ground Over Current (3I0>) Protection
- 6. Functional Overview: Key Protection & Control Functions: • Inverse Time Over Current Protection (IEC curves according to IEC60255) • High Impedance Restricted Earth Fault Protection (64G) • Inverse & Definite Time Negative Phase Sequence Over Current Protection (46) • Broken Conductor Protection (46BC) • Negative Phase Sequence Over Voltage Protection (47) • Under and Over Voltage Protection (27/59) • Externally Measured / Internally Calculated Residual Over Voltage Protection (59N)
- 7. Functional Overview: Key Protection & Control Functions: • Multi Shots (4-shots) Auto-Reclosing function (79) • Breaker Failure Detection (50BF) • VT and CT Supervision Function • Trip Circuit Supervision Function (74T) • Programmable Inputs & Outputs (12 DI/ 11 DO) • CB Close / Trip from HMI • Directional Power Protection (32) available in Enhance/Modular version • Frequency Protection (81U/O) available in Enhance/Modular version
- 8. Functional Overview: Key Protection & Control Functions: • Programmable & Target LEDs for indication with dual colours • Self Supervision of Relay • Metering Function • Disturbance Recording (10 nos.) • Event Recording • Fault Recording on HMI display (10nos.) • Non-Volatile memory • Fully communicable with IEC standard open protocol IEC60870-5-103, MODBUS & IEC 61850.
- 9. Functional Overview: Key Protection & Control Functions: • SCADA communication • PC front port communication for convenient relay settings • User friendly local operation with key pad • Large Liquid crystal display (20X4) with backlight • Password Protection
- 10. Functional Overview: Key Protection & Control Functions: