Installation inspection of cables and electrical devices of construction lifts

There are many electrical appliances in the construction elevator accessories. Today we will learn about the installation inspection of cables and electrical devices.

Cable installation

1. Connect the power supply cable from the main power switch in the distribution box of construction elevator accessories to the field power supply box;

2. Lead the other end of the cable through the cable guide frame to the hanging cage and connect it to the electric control box.

Inspection of electrical devices

1. The metal shell of the construction elevator structure, motor and electrical equipment shall be connected to the ground, and the grounding resistance shall not be more than 4 ohms;

2. Use megohm meter to measure the insulation resistance of motors and electrical components to ground not less than 0.5 megohm;

3. Check the safety control switches, respectively touching the limit switch, upper and lower limit switch, limit switch on each door, each time touching the cage should not work;

4. Check the wiring of the motor, and the upper and lower running direction of the lifting cage of construction elevator accessories shall be consistent with the marks of the operator's cab and cage top control console. After electrical inspection, the construction elevator can enter the installation condition.