Beskrivning
Description
This electronic residual current protection relay features a built-in 28 mm transformer, creating a compact, single unit. It is a super-immunized type-A relay with high-frequency current filtering and exceptional immunity, providing true root mean square (TRMS) measurement.
Main Features
- LED display showing:
- Residual current protection parameters
- Protection trip current
- Protection status messages, etc.
- Three programmable contact output relays:
- Main relay for protection, associated with the contact or trigger relay of the circuit breaker
- Two additional relays for pre-alarm notifications
- Voltage-free input for external tripping and rearming
- DIN 46277 rail assembly (EN 50022), occupying 3 modules
- Connection via pluggable terminal strips
Applications
The WRU-10 relays provide intelligent differential protection. Their design ensures maximum safety and continuity of electrical service while minimizing the risk of unwanted tripping.
Instantaneous leakage values are displayed, along with pre-alarm indicators, allowing for effective monitoring of protected lines and facilitating adequate preventive maintenance.
