*** PLEASE NOTE ***
This unit will not be serviceable by Omicron. We do not have a clear ownership paper trail to the registered owner so it will not be possible to transfer ownership of this device. There for no service or support will be provided by Omicron for this device. Calibration will have to be performed by a third party provider.
With its compact design and low weight of 12.9 kg / 28.4 lbs, the OMICRON CMC 353 provides the perfect combination of portability and power. It is the ideal test set for three-phase protection testing and the commissioning of SCADA systems. The powerful current outputs (3 x 32 A / 430 VA) optimally support 5 A relay testing.
The portable design makes this test set an excellent choice for commissioning and maintenance tasks, particularly in industry, distributed generation, and medium and low voltage applications. The CMC 353 meets a wide variety of challenges in protection engineering – from testing electromechanical relays to the latest IEC 61850 IEDs.
- Compact design and light weight providing a high degree of portability
- High current amplitudes for 5 A relay testing
- Powerful current sources for testing electromechanical relays
- High accuracy and versatility for testing static and numerical relays
- Integrated network for testing IEC 61850 IEDs
- 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)
- Reliable and robust
Specifications:
| Technical Data CMC 353 (continued) | |
|---|---|
| Low level outputs | 1 |
| Number of outputs | 6 (12 with Option LLO-2) |
| Setting range | 0 … ±10 Vpk |
| Max. output current | 1 mA |
| Accuracy error | < 0.025 % typ., < 0.07 % guar. at 1 … 10 Vpk |
| Resolution | 250 µV |
| Distortion (THD+N) | < 0.015 % typ., < 0.05 % guar. |
| Unconventional CT/VT simulation | linear, Rogowski (transient and sinewave) |
| Overload indication | yes |
| Isolation | SELV |
| Usability | completely independent from internal amplifier outputs |
| Connection | 16 pin combination socket (rear side) |
| Auxiliary DC supply | |
| Voltage ranges | 0 … 264 VDC, 0.2 A / 0 … 132 VDC, 0.4 A / 0 … 66 VDC, 0.8 A |
| Power max. | 50 W |
| Accuracy error | < 2 % typ., < 5 % guar. |
| Binary inputs | |
| Number | 10 |
| Trigger criteria | Toggling of potential-free contacts or DC voltage compared to threshold voltage |
| Input characteristics | 0 … ±300 VDC threshold or potential-free |
| Ranges | 20 V / 300 V |
| Resolution of threshold | 50 mV (0 … 20 V), 500 mV (20 V … 300 V) |
| Sample rate | 10 kHz (resolution 100 µs) |
| Time stamping accuracy | ±0.00015 % of rd.3 ±70 µs |
| Max. measuring time | infinite |
| Debounce / Deglitch time | 0 … 25 ms / 0 … 25 ms |
| Counting function | < 3 kHz at pulse width > 150 µs |
| Galvanic isolation | 5 galvanically isolated groups (2+2+2+2+2) |
| Max. input voltage | CAT IV / 150 V, CAT III / 300 V, transient immunity 2 kV |
| Counter inputs | |
| Number | 2 |
| Max. counting frequency | 100 kHz |
| Pulse width | > 3 µs |
| Threshold voltage | 6 V |
| Voltage hysteresis | 2 V |
| Max. input voltage | ±30 V |
| Isolation | SELV |
| Connection | 16 pin combination socket (rear side) |
| Trigger on overload | |
| Supported generators | Current generators |
| Timer accuracy error | < 1 ms |
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Seller Notes: This unit has been tested to be working and is in excellent condition but is not serviceable by Omicron due to the inability to transfer ownership.










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