DEIF MVR-T215 Transformer Protection

The MVR-T215 transformer protection relay is a combined monitoring and protection

relays to ensure best performance and availability of a transformer.

The MVR-T215 transformer protection relays comes with current and voltage based

protection functions. The device monitors all relevant measuring values and provides

information for analysis and preventive maintenance. Furthermore it provides the

possibility for automatic and manual voltage regulation and can be used as a back-up

protection.

5x Current input (configurable 0.2…10A)

4x Voltage input (1.00…480.00V (RMS)

3x Digital input

5x Output relay (4NO, 1CO)

1x IRF output (1CO)

2 x Remote com port (1 x RJ45 Ethernet and 1 x RS-485)

- IEC 61850 Ed1. Modbus TCP/RTU, IEC 60870-5-104/103/101. DNP 3.0. SPA protocols

- DT, IEC or ANSI time/overcurrent curves with settable release delays

- 3 extension slots for additional hardware options

- Event recorder (up to 15 000 events)

- Disturbance recorder (up to 100 disturbance records)

- Overloading and through fault statistics for preventive maintenance.

Features

Protection Functions:

• (Sensitive) Earth fault protection stages INST, DT or IDMT (ANSI 50N/51N(S))

• Three-phase over-current protection INST, DT or IDMT (ANSI 50/51)

• Breaker failure protection (ANSI 50BF)

• Directional (sensitive) residual over-current protection stages DT or IDMT (ANSI 67N)

• Directional three-phase over-current protection stages DT or IDMT (ANSI 67)

• Cable-end differential protection (ANSI 87)

• Current transformer supervision (ANSI 60L)

• Current unbalance/broken conductor protection stages INST, DT or IDMT (ANSI 46 /R/L)

• Fuse failure (ANSI 60)

• Harmonic over-current protection/inrush blocking stages INST, DT or IDMT (ANSI 50H/51H/68)

• Over-excitation protection (ANSI 24)

• Overvoltage protection INST, DT or IDMT (ANSI 59)

• Positive/negative sequence under-/over-voltage protection INST, DT or IDMT (ANSI 27P/47/59P)

• Programmable stage (ANSI 99)

• Residual voltage protection INST, DT or IDMT (ANSI 59N)

• Restricted low-impedance earth fault protection (ANSI 87N)

• Switch onto fault logic (SOTF)

• Under-impedance protection (ANSI 21)

• Under-voltage protection INST, DT or IDMT (ANSI 27)