Passenger lift lighting
- Elevating Systems
- Facility Management
- Ventilation Systems
- Current monitoring
- The function of the lighting in a passenger lift is monitored. If all lights fail, the lift may no longer be used.
- The E3IM is configured with the “under” function so that the current from a single lamp will exceed the threshold and trip the output relay. If the last lamp in a lift car fails, it may not be operated for legal reasons. The current monitoring relay provides this “zero current detection”.
- - Meets the legal requirements by detecting lamp failures
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An undervoltage monitoring relay with a fixed switching threshold at 0.85% of the nominal voltage is needed for emergency lighting systems. Two changeover…