ABB RET670 1MRK004816-AB Transformer Protection Relay Trusted supplier New In Stock

FAQ

What type of equipment is the ABB RET670 designed to protect?
The RET670 is designed to protect power transformers, autotransformers, shunt reactors, generator-transformer blocks, phase-shifting transformers, and small busbar systems.

Does RET670 support protection for multi-winding transformers?
Yes, it supports both two- and three-winding transformers with up to six sets of stabilized differential current inputs.

What are the key differential protection features in RET670?
The relay offers percentage bias restraint, second harmonic inrush restraint, fifth harmonic overexcitation restraint, and high-sensitivity protection for inter-turn faults.

What communication protocols does the RET670 support?
It supports IEC 61850-8-1, IEC 60870-5-103, DNP3.0, LON, and SPA protocols for seamless integration with various substation automation systems.

Is synchronizing and synchrocheck functionality available?
Yes, RET670 includes synchronizing, synchrocheck, and dead-line check functions, suitable for single or multi-breaker configurations.

Does the relay include disturbance recording capability?
Yes, it features a built-in disturbance and event recorder for up to 40 analog and 96 binary signals, ideal for post-fault analysis.

What auxiliary power supply does the RET670 require?
The RET670 operates on DC auxiliary power supply, typically 48V, 110V, or 220V DC, and includes internal fault monitoring.

How accurate are the measurement functions in the RET670?
It offers high accuracy with voltage and current measurements within ±0.25%, power within ±0.5%, and supports site calibration for enhanced precision.