OMICRON CMC 256 Plus 6 Phase Current / 4 Phase Voltage Protective Relay Test Set

Need Help? Call (800) 404-2832ATEC AssuranceWorldwide Delivery
Rent OMICRON CMC 256 Plus 6 Phase Current / 4 Phase Voltage Protective Relay Test Set
Enlarge Image
Request Quote Print Page
CMC 256Plus Datasheet
The OMICRON CMC 256 Plus 6 Phase Current / 4 Phase Voltage Protective Relay Test Set is the first choice for applications requiring very high accuracy. This unit is not only an excellent test set for protection devices of all kinds but also a universal calibration tool. Its high precision allows the calibration of a wide range of measuring devices, including: electricity meters of class 0.2, measuring transducers, power quality measurement devices and phasor measurement units (PMU). Its unique accuracy and flexibility make the CMC 256plus ideal for protection and measurement equipment manufacturers for research and development, production and type testing. The CMC 256plus can either be operated by the Test Universe software running on a PC or by the front panel control device CMControl. This unit is also compliant with NERC/FERC protective relay standards testing.
OMICRON CMC 256Plus Features
  • Protection test set and universal calibrator in one device
  • Testing of all relay generations – electromechanical, static, numerical, IEC 61850
  • Highly accurate test signals. For meter testing: The sources are the reference – no additional reference meters are required
  • Continuous synchronized outputs with CMIRIG-B (e.g. for PMU or MU testing)
  • Test Universe software with unrivaled manual and automated testing functionality
  • Front panel control with the unique CMControl (option)
  • 10-channel analog measurement and transient recording functionality (option)
  • Reliable and robust


Protection Relay Test Set
  • High-burden electromechanical relays
  • Static relays
  • Numerical relays
  • IEC 61850 IEDs (GOOSE and Sampled Values)
  • Relay panels
  • End-to-End testing with GPS or IRIG-B
  • Busbar protection (up to 22 signal generators)
  • Wide area protection


Power System Simulator
  • Transient fault simulation
  • Power swing
  • CT saturation simulation
  • CB simulation
  • Rogowski coil simulation
  • Compensated network
  • Transient playback (COMTRADE, PL4 (EMTP), ...)


Universal Tool for Substation Commissioning
  • Checking SCADA annunciations
  • Burden measurement
  • CT/VT polarity checker
  • Wiring checker
  • Event recording


Portable 10-Channel Measurement Device
  • Transient recording (trigger: binary, PQ, GPS)
  • Multimeter for: I, V, f, S, P, Q, cos Φ ...
  • Trend recording for: I, V, f, S, P, Q
  • Harmonics analysis


Universal Calibrator
  • Energy meters, 4 quadrants, class 0.2
  • Transducers
  • Power quality measurement devices according to IEC 61000
  • Phasor Measurement Units (PMU)
  • SCADA measuring equipment
  • Protection relays
  • Transient recorders (incl. time stamp accuracy)
  • Any measuring equipment for V, I, f, S, P, Q, ...

How to Video: Omicron CMC-256 Plus