This three-phase voltage and current monitoring relay is engineered for high-performance electrical system protection with a rated supply voltage of AC 3x220V It supports a substantial maximum load current of 100A making it suitable for demanding industrial and commercial environments The over-current protection is fully adjustable from 1A to 100A allowing for precise customization based on specific circuit requirements
The device maintains reliable operation across an extensive voltage range from AC140V to 300V and is compatible with both 50Hz and 60Hz power systems ensuring global application versatility It incorporates carefully calibrated hysteresis values featuring 5V for over-voltage and asymmetry conditions and 3V for under-voltage scenarios which effectively prevents unnecessary tripping during transient voltage fluctuations The fixed 10-second asymmetry trip delay provides tolerance for brief phase imbalances
With exceptional voltage measurement accuracy of ≤1% across the entire operational range the relay delivers precise monitoring and reliable response capabilities The unit is constructed with a high rated insulation voltage of 450V and features a single normally open output contact Both its electrical and mechanical durability are rated for 100000 operations ensuring long-term reliability and reduced maintenance needs
Designed with IP20 protection degree the relay is intended for indoor installation in environments classified as pollution degree 3 It is certified for operation at altitudes up to 2000 meters and in conditions where relative humidity remains below 50% at 40°C without condensation This combination of high current capacity and robust protective features makes it an ideal solution for comprehensive three-phase system protection
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