ABB RET670 1MRK002816-AA Transformer Protection Relay

FAQ

Q1: How many transformer windings does RET670 support?
A1: The RET670 supports both two- and three-winding transformers with up to six stabilized current inputs.

Q2: Does RET670 support IEC 61850 protocol?
A2: Yes, RET670 fully supports IEC 61850-8-1 including GOOSE messaging and process bus applications.

Q3: How is time synchronization achieved in RET670?
A3: RET670 offers multiple synchronization options including GPS, IRIG-B, IEC 61850, LON, or binary input.

Q4: Is a disturbance recorder available in the RET670?
A4: Yes, RET670 includes a built-in disturbance recorder that logs up to 40 analog and 96 binary channels.

Q5: What types of overcurrent protection are available?
A5: RET670 provides instantaneous, four-step delayed, directional and non-directional phase and earth overcurrent protection.

Q6: Does RET670 provide both high and low impedance REF protection?
A6: Yes, RET670 supports both high-impedance and low-impedance restricted earth fault protection methods.

Q7: Can RET670 be used for synchronism checking and control?
A7: Yes, the device includes synchronizing, synchrocheck, and energizing check functions for automated control.

Q8: Is RET670 suitable for remote communication and control?
A8: Absolutely, RET670 supports binary/analog remote signal transmission and integrates easily with SCADA systems.