Emergency Shunt Trip Relay

Elevator controls play a huge role in fire alarm system emergency functions.

Emergency shunt trip relay.

When normal power is lost the control is bypassed by the normally closed relay and full power is. Emergency bypass shunt relays ul924 applications our emergency shunt relays are designed to fill every need in your emergency lighting applications. A two second self test of the unit is performed every time the wall switch input is turned off. Shunt relay application our emergency bypass shunt relays are ul924 listed and suitable for shunting around wall switches in order to turn on emergency lighting in the event of loss of normal utility power.

Hubbell control solutions enclosed bypass shunt relays are typically used to bypass a normal control such as a switch dimmer or panel mounted relay when used on an emergency circuit. Ul924 enclosed 20 amp bypass shunt relay our enclosed 20 amp electrically held ul 924 bypass shunt relays provide an isolated normally closed contact that can be used to bypass control devices to power emergency lighting directly from the emergency generator. Emergency shunt relay by lighting controls design. Our ul924 emergency lighting relays can be used for automatic load control or bypass shunt applications to turn on emergency lighting in the event of the loss of normal utility power.

The coil in these relays is powered by a normal power supply. I e example if we have a shunt trip coil which is operate on 220 volts so we need to provide the 220 volts ac current to shunt trip coil to operate or to do trip the breaker in emergency time. This slim unobtrusive device converts regular light fixtures to approved emergency lights and can be flush or grid mounted. During normal operation the same 0 10v dimming system dali control device occupancy sensor relay panel or lighting control device can dim or switch regular and emergency fixtures on and off simultaneously.

Manually controlled emergency lighting will be automatically shunted on during a power outage the emergency shunt relay comes in a two gang junction box with a voltage separating barrier and is shipped with a. Normally closed electrically held relay to be wired in parallel with a wall switch. When normal power is present the esr relay coil is activated and the emergency panel is fed from normal power. Ul924 emergency lighting relays.

Whereas designated and alternate elevator recall captures and sends the elevator cab to safe floors elevator shunt trip works a little different. The normally closed relay in the ul924sr1 ul924sr2 connects to the line and load side of the control device. Elevator shunt trip is a function that involves shunting the breaker that controls the elevator equipment prior to the release of the automatic sprinkler systems. In automatic load control applications when normal power is present the esr relay coil is activated and the emergency panel is.

So our neutral will be connect direct to the shunt tripping coil and phase hot wire will be connect to coil other side through the epo push button.