Outline
XL-21 Type low voltage power distribution cabinet is applicable to power station and industrial and mining enterprise, used for power distribution in three-phase four-wire or three-phase five-wire system with AC 500V and below. It is installed indoors and near the wall. Repair before shield. Shell is bent with steel plate. Knife switch operation handle is installed to the upside of right column of cabinet front, can be used for switching power. Choose different types and circuit breakers with different current grades to user's specific requirements.
Model and meaning
Environmental Conditions
1.Installation Site:Indoor
2.Altitude:No more than 2000m.
3.Earthquake Intensity:No more than 8 degrees.
4.Ambient Temperature:No more than+40℃ and no less than -15℃.Average temperature is no more than +35℃ within 24 hours.
5.Relative Humidity:the average daily value is no more than 95%,the average monthly value is no more than 90%.
6.Installation locations:without fire,explosion danger,serious pollution,chemical corrosion and violent vibration.
Product Features
1.Harmonious and beautiful color matching.
2.Standardized design,compact structure,strong versatility.
3.The size of the box can be changed according to the demand.
4.The unique characteristic for the logo design.
5.Doors can be 180°opened.
6.The electric mounting plate can be dismantle separately.
The main technical parameters
| Sr. | Content | Unit | Value |
| 1 | Rated Operational Voltage | V | 400 |
| 2 | Rated Insulation Voltage | V | 660 |
| 3 | Rated Frequency | Hz | 50/60 |
| 4 | Rated Current | A | ≤630 |
| 5 | Frequency Withstand Voltage in 1 min of Aux Control Loop | kV | 2 |
| 6 | Rated Impulse Withstand Voltage | kV | 8 |
| 7 | Degrees of Protection | IP | IP30 |
| 8 | Electrical Clearance | mm | 10 |
| 9 | Creepage Distance | mm | ≥12.5 |
Schematic diagram of structure
