As a large-scale equipment for mixing concrete, the concrete mixing plant is an indispensable mixing equipment for road construction and building construction. Its safe and stable operation is related to the progress of the entire project and the safety of the construction personnel. However, any kind of machinery and equipment will inevitably encounter some unexpected events in the process of operation, including power failure, leakage, damage to parts, etc. For large-scale equipment such as concrete mixing stations, leakage phenomena also occur What should I do if this problem occurs?
1. Determine if the line is indeed leaking.
You can use a megohmmeter to measure the insulation resistance of the line, or connect an ammeter to the main knife gate, and turn on all the mixing station equipment without turning on the equipment. If the pointer of the ammeter swings, it indicates that the line is leaking.
2. Determine whether there is leakage between the phase line and the neutral line, or between the phase line and the earth, or both. The method of judgment is to cut off the neutral line, or the current meter indicates the same, it is the leakage between the phase line and the earth; if the current meter indicates zero, it is the leakage between the phase line and the neutral line; Means both.
3. Determine the leakage range.
Remove the shunt fuse or open the knife gate. If the current meter indicates the same, it is the bus leakage; if the current meter indicates zero, it is the shunt leakage; if the current meter indicates a small but not zero, it indicates that the bus, branch All roads are leaking.
4. Find out the concrete mixing plant leakage point.
After the above inspections, turn on the concrete mixing plant switches of the line lamps in turn. When a switch is opened, if the ammeter indicates zero return, it is the branch line leakage. If the ammeter indicator becomes smaller, it indicates that in addition to the branch line leakage, there is leakage elsewhere. Or use a stylus to test in sections. By narrowing the search range in turn, you can find the leakage point.
