Fire Alarm Elevator Shunt Trip

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Fire Alarm Elevator Shunt Trip

Fire Alarm Elevator Shunt Trip - Fire Alarm Elevator Wiring Diagram likewise Alarm Shunt Circuit Diagram moreover Elevator Wiring Schematic besides Shunt Trip Wiring Diagram together with Elevator Shunt Trip Breaker Wiring Diagram. in addition home elevator wiring diagram also elevator shunt trip breaker wiring diagram in addition fire alarm elevator wiring diagram further electrical shunt trip diagram furthermore shunt trip wiring diagram along with elevator wiring schematic in addition elevator shunt trip breaker wiring diagram further alarm shunt circuit diagram.
in addition home elevator wiring diagram also elevator shunt trip breaker wiring diagram in addition fire alarm elevator wiring diagram further electrical shunt trip diagram furthermore shunt trip wiring diagram along with elevator wiring schematic in addition elevator shunt trip breaker wiring diagram further alarm shunt circuit diagram. Fire Alarm Elevator Wiring Diagram likewise Alarm Shunt Circuit Diagram moreover Elevator Wiring Schematic besides Shunt Trip Wiring Diagram together with Elevator Shunt Trip Breaker Wiring Diagram.
Exhibit VI.18 Typical Method of Providing Elevator Power Shunt Trip Supervisory Signal • Relay contacts shown deenergized Supervised elevator power circuit from fire alarm system Source: NFPA 72®, National Fire Alarm Code®, NFPA.Relay contacts Hot Neutral Supervisory 120 volt ac circuit (power to operate the shunt trip disconnecting means) shown deenergized signal to fire alarm control unit To initiating device circuit Supervised elevator power circuit from fire alarm Interface Between Fire Alarm and Elevator Systems Emergency Control Function Fire Alarm Control Unit Elevator a fire alarm system emergency control function interface device (relay) for items such as elevator recall, shunt trip, and recall shunt‐trIp

Currently,.ASME A17.1 requires an automatic power shutdown feature for eleva‐tors that have fire sprinklers The National Fire Alarm Code, NFPA 72, requires that smoke detectors in either the elevator hoistway or the elevator The fire alarm had been tripped and the loud reverberations had everyone scrambling from their desks to the exits. “Elevator shunt trip,” Trigger argued, leading them past the elevator bank and toward the group of people filing into the The fire alarm had been tripped and the loud reverberations had everyone scrambling from their desks to the exits. “Elevator shunt trip,” Trigger argued, leading them past the elevator bank and toward the group of people filing into the FIRE PROTECTION

REQUIREMENTS.ASSOCIATED WITH ELEVATOR LOBBY ENCLOSURES 5.273 B. Fire department Fire alarm B1. All of “A” above B2. Normal/standby power B3. Hoistway lighting B4. Minimum lobby of 150 sq ft (13.9 sq m), no less than 8 (2.4 m) dimension B5. Omit elevator shunt trip system C6.Figure A39.4.4 Typical method of providing elevator power shunt trip supervisory signal. Hot I I Neutral 120voltac circuit (Power to operate the shunt trip breaker) ' Relay contacts shown deenergized Supervisory signal to fire alarm panel The electrical subcontractor will also provide a shunt trip breaker. This is a safety device tied to the fire alarm system which shuts off power to the elevator when the sprinkler system goes off. The reason for this is

that.if the sprinkler head at the Mass notification systems often extend the notification appliances of a standard fire alarm system to include PCbased an alarm occurs in the elevator hoistway or associated control room, and in some cases the shunt trip (disconnect) of 

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