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Low voltage power distribution cabinet
Low voltage power distribution cabinet
Product details
1、 Product Overview
The XL-21 low-voltage power distribution cabinet is suitable for power distribution in three-phase four wire systems with AC voltage of 500 volts or below in power plants and industrial and mining enterprises.
XL-21 low-voltage power distribution box is installed on the indoor device wall and undergoes maintenance in front of the screen.
2、 Model and Features
3、 Structural characteristics
The XL-21 low-voltage power distribution cabinet is enclosed, with a steel plate casing. The knife switch operating handle is installed on the upper part of the front right column and can be used to switch power sources. There is a voltmeter installed in front of the distribution box, indicating
Voltage of the busbar. There is a door in front of the distribution box, and when the door is opened, all equipment inside the distribution box is exposed for easy maintenance and repair. This distribution box uses domestically designed components, which have a compact structure, easy maintenance, and circuit layout
Voltage of the busbar. There is a door in front of the distribution box, and when the door is opened, all equipment inside the distribution box is exposed for easy maintenance and repair. This distribution box uses domestically designed components, which have a compact structure, easy maintenance, and circuit layout
The case has the characteristics of flexible combination. In addition to air circuit breakers and fuses for short-circuit protection, the distribution box is also equipped with contactors and thermal relays. The front door of the box can be equipped with operation buttons and indicator lights.
4、 Main equipment technical data
Knife melting combination switch
| model | Rated current (A) | Rated current of melt (A) | notes |
| HR3-400/34 | 400 | 150, 200, 250, 300, 350, 400 | No melt when installing isolation blades |
Air Circuit Breaker
| model |
Rated current (A) |
Setting current of release device (A) | notes |
| MLM5-40/390 | 20 | 7. 10, 15, 20, 30, 4 |
|
| MLM1-100/300 | 100 | 15. 20, 25, 30, 40, 50, 60, 80, 100 |
|
| MLM1-250/300 | 250 | 100, 120, 140, 170, 200, 225, 250 |
|
current transformer
| model | Primary current (A) | Primary current (A) | notes |
| LM-0.5 | 75, 100, 150, 200, 300, 600 | 5 |
|
fuse
| model | fuse | Rated current of fuse link (A) | notes |
| RL1-15 | 15 | 2. 4, 5, 6, 10, 15 |
|
| RL1-60 | 60 | 20. 25, 30, 35, 40, 50, 60 |
|
| RL1-100 | 100 | 30, 40, 50, 60, 80, 100 |
|
| RL1-200 | 200 | 80, 100, 120, 150, 200 |
|
| RL1-400 | 400 | 150, 200, 250, 300, 350, 400 |
|
five、Schematic diagram of box structure
six、UseMaintenance and repair
After installation or maintenance, the power distribution box must undergo the following inspections and tests before being put into operation (the inspections and tests after maintenance depend on the quality of the maintenance)
Check whether the electrical equipment and secondary wiring installed inside the power distribution cabinet meet the requirements of the drawings.
Check if the knife switch and air switch used for operation are flexible and free of jamming.
Check if the contact of the installed electrical equipment is good and meets the requirements for its own use
Check whether there are any other foreign objects inside the power distribution cabinet and whether the fastening screws of each part are loose.
Check whether the electrical equipment and secondary wiring installed inside the power distribution cabinet meet the requirements of the drawings.
Check if the knife switch and air switch used for operation are flexible and free of jamming.
Check if the contact of the installed electrical equipment is good and meets the requirements for its own use
Check whether there are any other foreign objects inside the power distribution cabinet and whether the fastening screws of each part are loose.
sevenOrdering Notice
The parameters in this plan are the standard configuration provided by our company. If the customer has no specific requirements, the company will supply according to the standard configuration. If it exceeds the requirements of this plan, please explain separately.
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