Electrical introduction: : Line installation and commissioning of electric power installation engineering

Vietnam electrical installation project，India power distribution project， Southeast Asia power distribution cabinet

First, line installation

1, carefully view the circuit drawings, understand the line layout, do know.

2. Fix the high and low voltage switchgear on the base of the site according to the order of the drawings. Combine multiple cabinets and install bus bars.

3, a cable wiring, the same specification of unified wiring, a specification of the cable installed, and mark, and then install another specification of the line.

4, the wiring of the power installation project site should first enlarge the line, and then put the small line, first cloth a line, and then cloth a second line, each line is marked.

5, power engineering wiring to ensure quality and beauty, for the same type of line with the same color, such as A, B, C three-phase is to use yellow, green and red three colors, while doing the corresponding code identification.

Second, line debugging

After the line is installed, it is necessary to debug to ensure that the installation is correct.

1. Check whether the cables are correctly connected, for example, whether the cables are incorrectly connected, whether the terminals on the upper end of the PDC terminal block are consistent with the onsite operation point, and whether the buttons and indicators are correctly connected.

2, and then debug a line, a distribution cabinet a distribution cabinet for debugging, such as debugging a switch cabinet all electrical circuits, you can push the switch on, touch the contactor, observe whether the motor reverse, or the fan has no reverse.

3, debug all button signals, by pressing each button, check whether the corresponding indicator light is on.

4, debug the feedback signal of the main loop, such as the point contactor, see whether the signal is fed back to the PLC, and check whether the corresponding line is normal.

5, manually run the frequency converter, governor, check whether the motor is wrong, the reducer has no abnormal sound.

6. Check whether all feedback signals are normally fed back to PLC.