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Discussion Starter · #1 ·
Im wiring an elevator in a residence, Threes phase 120/208. A 60 amp breaker feeds a heavy duty siemens disconnect on the fourth floor. the load side of that disconnect goes to another heavy duty disconnect in the top of the shaft. I need to install contacts so that a battery backup system will be able to raise or lower the car incase of loss of power. im a journeyman, though i have never run into this and am on my own can anyone offer a little guidence?
 

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Is this a new install? If so then a link to the manufacturer's website would help us understand what you have.
Are the elevator motors 208V 3 phase?
And the battery supply will have an inverter to produce 208V 3 phase?
 

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You need a axillary contact in both disconnects, with 2 conductors, in series, if one or the other disconnect is open it will take the elevator out of emergency mode. Your SH who sold you the disconnect should be able to get them. If not GE has them for their equipment.
 

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Discussion Starter · #5 ·
RHWilks said:
You need a axillary contact in both disconnects, with 2 conductors, in series, if one or the other disconnect is open it will take the elevator out of emergency mode. Your SH who sold you the disconnect should be able to get them. If not GE has them for their equipment.
Ok, it's a Siemens heavy duty disconnect, I have the contact kits with one set of each NO and NC contacts. They install with 10-32s on the handle. I have the 24 vdc wires in the shaft disconnect that the elevator guy already ran. I think I need an 18-2 from one disconnect to the other wired normally open, right? One wire gets tied straight throu and the other goes through both normally open contacts?
 

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Depending on the elevator. Last one I did it was open when the disconnect was open, closed when ect... it must open or close the circuit when the disconnect is off. The battery back up is in the event of a power failure. Not opening the disconnect for maintenance.
 

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Is it a hydraulic elevator?
If so, the ups gets wired into the controller and if there is a power loss and all disconnects are in the on position, then the controller uses the UPS power to allow gravity to lower the car.
As far as the NO or NC contacts usually the elevator guys want the contacts closed for normal operation.
 
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