Omicron CMC 356
The CMC 356 is the universal solution for testing all generations and types of protection relays. Its powerful six current sources (three-phase mode: up to 64 A / 860 VA per channel) with a great dynamic range, make the unit capable of testing even high-burden electromechanical relays with very high power demands.
The CMC 356 is the first choice for applications requiring the highest versatility, amplitude and power. Commissioning engineers will particularly appreciate its ability to perform wiring and plausibility checks of current transformers, by using primary injection of high currents from the test set.
Key Features
- Powerful current sources for testing even high-burden electromechanical relays
- High current amplitudes for 5 A relay testing
- High accuracy and versatility for testing static and numerical relays of all types
- Integrated network for testing IEC 61850 IEDs
- 10-channel analogue measurement and transient recording functionality (option)
Omicron CMGPS
When performing end-to-end tests of line protection schemes, it is necessary to start several test sets simultaneously. The CMGPS is a GPS-based synchronization unit which is used with CMC test equipment.
Applications
The CMGPS receives signals from the satellites of the Global Positioning System (GPS) and provides an output at a time specified by the user. This clock output is then used as a trigger input to start the CMC test set. The CMGPS has been developed to fulfil the requirements of testing in the field, because off-the-shelf GPS receivers with trigger output have many drawbacks (size, weight, complicated operation, etc.).
Further Information
CMGPS is typically ready for operation just 5 minutes after startup. The synchronizing pulse can be configured according to the requirements of the application. The software is integrated in the testing modules (like the State Sequencer). It allows for the setting of:
- First output pulse
- Pulse rate and polarity
Two independent timing pulses are available via separate connectors
- Pulse out 1: 16-pin plug which is connected to the CMC test set (external interface)
- Pulse out 2: two 4mm banana plugs
Omicron Current Clamp C-Probe 1
C-Probe 1 is an active AC and DC current probe with voltage output. It is the recommended accessory for measuring currents with the CMC 356 with ELT-1 hardware option or CMC 256plus and EnerLyzer software license.
Technical Data
- Two measuring ranges: 10 A and 80 A
- Frequency range: DC to 10 kHz
- Accuracy: error < 2% for currents up to 40 A and frequencies up to 1 kHz
- Phase error: < 0.5° at 50/60 Hz
- Size: 230
