Over 50 individual monitoring circuits were required along with bms system tie in.
Emergency lighting relay switch.
Branch circuit emergency lighting control transfer switch by hubbell control solutions the ul1008bcelts1277 is specifically listed for branch circuit emergency lighting control under the new ul standards.
Ideal for use along side a standard npp16 relay pack that controls a zone s normal powered lighting the npp16 er is designed to switch up to 16 amps of lighting load.
The shunt relay is used on designated emergency lights to shunt or bypass around the lighting controls when a normal power outage occurs.
These devices sense normal power and automatically connect the emergency power source to its lighting loads during a power outage.
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A custom ul924 relay control system was requested by the specifier to replace a central dc battery system.
Our enclosed 20 amp electrically held ul 924 automatic load control relay is specifically designed for projects requiring control of an emergency lighting along with controlled general lighting in a space.
This unit is intended for applications where both a normal and emergency branch circuit are to be connected to the emergency lighting.
When normal power drops out the esr coil is deactivated and n c contact falls closed.
In automatic load control applications when normal power is present the esr relay coil is activated and the emergency panel is fed from normal power.
The lighting on the emergency circuit is switched on and off based on the normal circuit switching input to the unit.
The lighting load can be switched on off using an individual wall switch.
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A mix of exit style 24 7 and normally off emergency lights were used.
Normal emergency lights are fed via a normal emergency breaker panel and a wall switch or wallbox dimmer.
When normal power fails an upstream ul1008 transfer switch automatically transfers the feeder of the breaker panel to an emergency power source.