Protection relays
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![Generator protection unit](https://deif-cdn-umbraco.azureedge.net/media/xmjdckmr/gpu-300-front.png?width=200&v=1da9151fbfcacf0&v=9)
Generator protection unit GPU 300
- Comprehensive generator/busbar protection
- Smart synchronization check
- Supervision
- High resolution 5" colour graphic display with push-buttons
- Flexible and modular input/output with metal rack
- Plug & play, auto-configure I/O modules and network
- Integrated 5 × RJ45 ports with auto-detected multi-function
- Access to all connected units in one point
- Context-sensitive help in the controller display unit
- Event and alarm log, with real-time clock
- Pre-defined control settings
- User-friendly logic configuration tool, based on ladder logic and function blocks with monitor operation
- Password-protected, with customisable permission levels
- 3-phase AC measurement, up to 690 V AC directly, class 0.5
- Easy-to-use PC tool (PICUS)
- Advanced alarm handling with latch and shelve possible
![Medium Voltage Relay](https://deif-cdn-umbraco.azureedge.net/media/gckdmfom/4.png?width=200&v=1da91523a32bb40&v=9)
Medium Voltage Relay MVR-200 series
- Programmable logic
- Fast and easy commissioning and service with front communication port and intuitive software
- Password-protected user levels
- Individual voltage and current harmonics up to 31st
- Redundant Ethernet with Modbus TCP
- RS-485 Modbus RTU communication
- IEC 60870-5-104/103/101 communication
- IEC 61850 communication (incl. HSR, PRT, PTP acc. IEEE 1588) and GOOSE
- On-site replaceable spare part modules
- Class 0.5 power and energy measurement (Class 0.2S optional)
- Conformal Coating available for all devices
- Marine type approval by major class societies
![Undervoltage and overvoltage relay, U< and U>](https://deif-cdn-umbraco.azureedge.net/media/nfeai3cc/rmv-112d-front.png?width=200&v=1da91522205c440&v=9)
Undervoltage and overvoltage relay, U< and U> RMV-112D
- Under- and over-voltage.
- U>: 100 to 120 %, U<: 80 to 100 %.
- Under-voltage/over-voltage (U< + U>)
- ANSI code 27 and 59
- 3-phase measurement
- LED indication of fault condition
- Timer-controlled tripping
- LED indication for activated relay
- 35 mm DIN rail or base mounting
![Overvoltage relay, U> and U>](https://deif-cdn-umbraco.azureedge.net/media/5emona4h/rmv-122d-front.png?width=200&v=1da9152024c94d0&v=9)
Overvoltage relay, U> and U> RMV-122D
- Over-voltage (double).
- U>: 100 to 120 %,U>: 100 to 120 %.
- Under-voltage/over-voltage (U< + U>)
- ANSI code 27 and 59
- 3-phase measurement
- LED indication of fault condition
- Timer-controlled tripping
- LED indication for activated relay
- 35 mm DIN rail or base mounting
![Undervoltage relay, U< and U<](https://deif-cdn-umbraco.azureedge.net/media/vl2jo5xx/rmv-132d-front.png?width=200&v=1da915218ec3510&v=9)
Undervoltage relay, U< and U< RMV-132D
- Under-voltage (double).
- U<: 80 to 100 %, U<: 80 to 100 %.
- Under-voltage/over-voltage (U< + U>)
- ANSI code 27 and 59
- 3-phase measurement
- LED indication of fault condition
- Timer-controlled tripping
- LED indication for activated relay
- 35 mm DIN rail or base mounting
![Over-/undervoltage relay, U> and U<](https://deif-cdn-umbraco.azureedge.net/media/qp5neqy0/rmv-142d-front.png?width=200&v=1da91520bbf1970&v=9)
Over-/undervoltage relay, U> and U< RMV-142D
- Under- and Over-voltage.
- U>: 100 to 120 %, U<: 80 to 100 %.
- Single phase measurement.
- Under-voltage/over-voltage (U< + U>)
- ANSI code 27 and 59
- 3-phase measurement
- LED indication of fault condition
- Timer-controlled tripping
- LED indication for activated relay
- 35 mm DIN rail or base mounting
![Current relay](https://deif-cdn-umbraco.azureedge.net/media/2ilf4aue/rmc-122d-front.png?width=200&v=1da9151f7875170&v=9)
Current relay RMC-122D
- Short circuit and over-current
- I>>: 100 to 400 %, I>: 50 to 150 %
- Combined functionality
- Short circuit relay (I>>)
- ANSI code 50 and 51
- Measurement of 3-phase currents
- LED indication of fault condition
- Timer-controlled tripping
- LED indication for activated relay
- 35 mm DIN rail or base mounting
![Current relay](https://deif-cdn-umbraco.azureedge.net/media/ievf32sg/rmc-131d-2-front.png?width=200&v=1da91522822dc50&v=9)
Current relay RMC-131D
- Differential current relay
- ANSI code 87
- Measurement of 3-phase currents
- Non-stabilised measurement
- LED indication of fault condition
- Timer-controlled tripping
- LED indication for activated relay
- Extra change-over relay contact for signalling
- 35 mm DIN rail or base mounting
![Loss of mains relay](https://deif-cdn-umbraco.azureedge.net/media/4wwfsjlj/lmr-122d-front.png?width=200&v=1da9151fb9efc90&v=9)
Loss of mains relay LMR-122D
- Vector shift and df/dt (ROCOF)
- Detection of vector shift
- ANSI code 78
- Mains disconnection on mains failure
- Ensures no asynchronous reconnection
- LED indication of fault condition
- LED indication for activated relay
- 35 mm DIN rail or base mounting
![Synchronisation & circuit breaker closing](https://deif-cdn-umbraco.azureedge.net/media/2ienzts2/fas-113dg-front.png?width=200&v=1da91521cf8e3b0&v=9)
Synchronisation & circuit breaker closing FAS-113DG
- Automatic.
- Voltage regulation
- Breaker-time compensation.
- Synchronisation of generator to busbar
- Circuit breaker time compensation
- Voltage check
- LED indication of status
- LED for activated control
- LED for synchronising signal
- 35 mm DIN rail or base mounting
![Synchronisation & circuit breaker closing](https://deif-cdn-umbraco.azureedge.net/media/5raftjtw/fas-115dg-front.png?width=200&v=1da915223750bb0&v=9)
Synchronisation & circuit breaker closing FAS-115DG
- Automatic.
- Voltage regulation
- Breaker-time compensation.
- Synchronisation of generator to busbar
- Circuit breaker time compensation
- Voltage control
- LED indication of status
- LED for activated control
- LED for synchronising signal
- 35 mm DIN rail or base mounting