RMP-121D

• 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

• 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-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

• 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

• Earth fault protection at two levels
• Built-in filter for 3rd harmonic
• LED indication of fault condition
• Timer-controlled tripping
• LED indication for activated relay
• 35 mm DIN rail or base mountin

• Double over-current relay (I> + 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

• 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

• 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

• Short circuit and over-current circuit relay (I> + 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

• 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 mountin

• Combined under-frequency/over-frequency
• For 1- and 3-phase networks
• LED indication of fault condition
• Timer-controlled tripping
• LED indication for activated relay
• 35 mm DIN rail or base mounting

• Generator under-excitation protection
• ANSI code 40
• Single-phase measurement
• Timer-controlled tripping
• LED indication of fault/activated relay
• 35 mm DIN rail or base mounting

• Designed for cables and busbar
• Secondary current: 5 or 1 A
• Accuracy class/protection class up to 10P10

Multi-function synchroscope meter - Features

The multi-function synchroschope meter from DEIF has a long list of features:

• Multi-function precision LED synchroscope
• Easy push-button programming of all set points
• Very high user safety
• High immunity to harmonic distortion
• Dead-bus functionality
• Voltage measurement
• Frequency matching
• Phase angle comparison
• DIN standard size: Q96

• Vector shift
• 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

• 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

• Wide screen format
• True glass front
• Capacitive touch screen
• Multi-touch and Gestures
• Robust aluminium housing
• SD card slot for easy storage and updating
• USB hosts for printers, accessories, data storage and updating
• Dimmable LED backlight
• Web server for remote access from i.e. mobile devices
• 3 Ethernet ports with integrated switch
• Serial communication (RS-232, RS-422 and RS-485)
• Wide range of support for industrial protocols
• OPC UA Server and Client
• JAVA scripting
• CODESYS V3 (optional)
• Powerful ARM Cortex-A9 processor
• Plug-in module for CANbus (CANopen/J1939)
• Wide operating temperature -20°C to +60°C
• Marine certifications
• Certified for hazardous environments
• Available in 7", 10", 15" and 21" sizes

• Up to 1,000 V L-L AC voltage input
• Up to 20 A AC current input
• Accuracy class: 0.5
• Password protection
• Trip time typically below 50 ms
• Two-stage trip setting
• Start-up delay
• 13 different protection functions
• RS-485 serial Modbus communication
• Fast and simple commissioning and setup from M-set
• Universal power supply of 20 to 300 V DC/48 to 276 V AC
• Marine approval by GL/DNV