How to measure the insulation resistance of elevator electrical equipment? What is the required value?
Attention should be paid before the measurement of voltage can not withstand the circuit (such as frequency conversion, output terminals, I/O terminals, etc.) off, to prevent electrical components are broken down.
Elevator equipment is generally AC 380V, you can choose the 500V meter scales measuring. Measurements include ground insulation, see insulation for details.
Insulation test according to the principle of 1M/kV, general low-voltage equipment insulation more than 0.5M can.
