Overcurrent Relay NR-200 is a multifunctional numerical relay for protection of medium and low voltage networks. Four protection functions are integrated in the relay: thermal protection (I2t) with an inverse time characteristic, two stages of overcurrent protection (I> and I >>) with time independent characteristics and earth fault protection (IE) with time independent characteristics. Using the advanced microprocessor technology the relay meets the most demanding reliability and availability specifications, and it is intended for application in distribution and industrial plants. The set of available protection functions makes the relay a very good solution for overcurrent protection in all plants that require modern and economical solution.
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- multifunctional numerical overcurrent relay with four protection functions: overload protection I> and I >>, thermal protection Ith and earth fault protection IE (optional)
- measuring the true RMS value of the current
- numerical processing of measured quantities
- high precision characteristics
- standard current inputs 1A or 5A
- the protection activation signalling on the alphanumeric LCD and bi-color LED elements
- four programmable relay outputs
- optical or RS485 communication with the master system
- self-test function, local and remote signalling of device availability
- small dimensions, according to DIN 43700 standard for mounting instruments
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