Elevator debugging process(c)

1.1.3 Power checks.

A) the system power supply before checking user. An interphase voltage 380V15% or less, not parallel to each phase of not more than 3%.

2) control board controller elevator test tool into the power 24V ~ COM into the electric voltage between 24V.

3) Check the total switching capacity of the line and should meet the requirements.

Note: The system voltage exceeds the allowable value into the cause devastating consequences, we should focus on inspection, should pay attention to the positive and negative DC voltage. Into the power system at the phase when you do not move vehicles to avoid accidents.