Installation and Debugging of KBSG mining explosion-proof isolation transformer
Writer： Hengfeng you electric Time：2023-04-07 views：times
Source: Hengfengyou Electric Author: Jack Date：April 2.2022
KBSG mine flameproof mobile substation is mainly used in methane mixed gas and coal dust and has the danger of explosion in the mine, as a comprehensive mechanized mining equipment of coal mine power distribution device.
Today, let JACK, the sales director of Hengfengyou Electric, introduce the precautions for installing mine explosion-proof isolation transformer.
1. The installation site should be well ventilated
1.1 Installation according to coal Mine Safety Regulations
1.2 Installation clearance size: the distance between the protruding part of the shell and the roadway side support, railings and mobile mining vehicles shall not be less than 0.5mm; The width of sidewalk and inspection channel is not less than 0.8mm; The distance between the highest point and the lowest point of the roof or support is not less than 0.25mm: there is room for operation
2. Installation procedures, methods and precautions
2.1 The product can be moved and placed on rails or flat ground without fixing. Then the high-voltage cable, low-voltage cable, control cable and so on are extracted from the substation and connected to the relevant equipment
2.2 Notice Wiring terminals should be welded at the front end of cables and cables in and out should be pressed and sealed. All electrical connections should be in good contact, reliable and pressed
3. Debug
3.1 Open and close the high and low voltage switches for 10 times respectively;
3.2 Conduct simulated electrical interlocking test. The interlocking device can cut off the incoming high-voltage power supply when the upper cover of the box needs to be opened
3.3 Perform emergency stop button action test. Press the small emergency stop button to make the upper level circuit breaker break;
3.4 Conduct simulated interlocking action test, that is, when the power supply is disconnected under normal circumstances, the low-voltage feed switch will open first, and the high-voltage load switch will open later.
4. Acceptance test items, methods and broken data after installation and commissioning
4.1 Check whether the wiring of each cable is correct and whether all parts are properly assembled
5. Preparation, start-up and trial operation before trial operation
After the items are qualified, high voltage can be sent for no-load trial operation, check the noise and temperature rise of the transformer, etc., until no abnormal phenomenon of no-load operation, load can be connected
5.Conditions of use:
A. The altitude does not exceed 2000m
B. The ambient temperature shall not be higher than +40℃;
C. The relative humidity of the air does not exceed 95%(at +25℃);
D. No strong jolting and vibration and the inclination of the vertical plane does not exceed 15 degrees;
E. Gases and vapors that do not corrode metal and damage insulation;
F. A dry place.
