What are the common problems and faults of low-voltage switchgear?

Low voltage switchgear, also known as low-voltage distribution cabinet, has a voltage of 400V. The reason why it is called low-voltage switchgear is mainly relative to 10kV high-voltage switchgear. Low voltage switchgear mainly distributes electrical energy and is located near the load center, so it is necessary to ensure its normal operation. However, due to the complex operating environment of low-voltage switchgear and prolonged operation, it is also prone to malfunctions. Low voltage switchgear is suitable for industries such as power plants, petroleum, chemical, metallurgical, textile, and high-rise buildings as transmission, distribution, and substation equipment.

1、 Short circuit fault

1. The insulation base of the supporting insulation components and plug-in contacts of the busbar is contaminated, severely damp, or mechanically damaged, causing short circuit faults due to flashover or discharge.

2. Unreasonable selection of electrical components, such as insufficient breaking capacity.

3. Misoperation malfunction.

4. After maintenance, if tools, bolts, and other conductive materials are left on the busbar, a short circuit will occur once powered on.

5. Small animals entering low-voltage switchgear by mistake can also cause short circuit faults.

2、 Mother's volleyball fever

1. Poor maternal contact.

2. Tighten or loosen the docking bolts too tightly. Switchgear is an electrical device. The external line first enters the main control switch inside the cabinet, then enters the distributor switch, and sets each branch according to its needs. There are various components and switches inside the switchgear. To ensure the safety performance of the switchgear, the cabinet door is usually locked. At the same time, in order to observe the working condition of the switchgear from time to time, observation windows are usually installed on the cabinet. When the switchgear malfunctions during operation, emergency braking measures must be taken to close the switch. Due to the lock of the cabinet door, it is also necessary to find the key to open the cabinet door in emergency situations, which greatly wastes emergency repair time and causes serious losses.

For users of low-voltage switchgear, regular maintenance and repair should be carried out to avoid dust accumulation and other debris. Quality supervision should also be strengthened during the installation of low-voltage distribution cabinets to avoid power accidents caused by installation quality. For more power technology issues, you can consult Xinyang Pinggao Electric Co., Ltd. for free.