The OMICRON CMC 356 is an industry-standard multi-phase relay testing system designed for comprehensive testing and commissioning of protection relays, meters, and substation automation systems. It supports both conventional and IEC 61850-based digital substations, enabling engineers to perform accurate secondary injection, functional testing, and end-to-end protection verification. Its high output power and flexibility make it suitable for everything from electromechanical relays to modern numerical IEDs.
Technical Highlights: 6 current sources + 4 voltage sources (fully independent) | Current output: up to 3 × 64 A or 1 × 128 A (high power mode) | Voltage output: up to 4 × 300 V | Frequency range: 0–1000 Hz | Supports IEC 61850 (GOOSE & Sampled Values) | Up to 12 low-level signal outputs for advanced testing | High accuracy DSP-based signal generation | Controlled via Test Universe software with automated test plans
Ideal for relay testing, substation commissioning, protection scheme validation, and advanced power system simulation.
Omicron CMC 356 - Relay Test Set
PRODUCT INFO
Omicron CMC356 is availble for rental throughout UAE
Six independent current sources (in 6-phase mode) and four voltage output channels — allowing simulation of complex protection scenarios and high-burden relay testingHigh current amplitudes: in three-phase mode up to 64 A per channel (860 VA) to handle challenging relay burdens.
Flexible voltage outputs: for example 4 × 300 V or 2 × 600 V, enabling a wide range of relay and measurement tests.
Full amplitude, phase and frequency control of each output channel supports AC, DC, harmonics, inter-harmonics and transient simulation.
Integrated network interface(s) for testing IEC 61850 IEDs, including GOOSE and Sampled Values simulation and capture.
Optionally equipped with analog measurement and transient recording functionality (via the “ELT-1” option) — making the device also usable as a 10-channel portable multi-meter and recorder.
Works with OMICRON’s software suite such as Test Universe, RelaySimTest, CMControl P for automated, scripted or manual testing.

