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China XL-21 AC Low Voltage Power Distribution Cabinet - Reliable Suppliers and Factory Solutions
Model and Definitions
Use Environment
- Ambient temperature: -5℃ ~ +40℃, 24h average temperature inside does not exceed +35℃.
- Altitude: no more than 2000m.
- Relative Humidity: No more than 50% when the ambient air temperature is +40℃; higher relative humidities can be achieved at lower temperatures (e.g. 90% at +20℃), taking into account temperature changes. Moderate condensation is permitted.
- When the equipment is installed, the inclination to the vertical plane should not exceed 5°.
- The equipment should be installed in a place without severe vibration, impact and corrosion.
Note: If the above conditions are exceeded, please consult with our company.
Product Technical Features
- The electrical performance fully complies with GB 7251.1 and IEC60439-1 relevant provisions.
- The feeder switch adopts a new type of molded case circuit breaker and compound release with small size, high breaking rate, short arcing (or no arcing). It has overload and short circuit protection devices and can be equipped with leakage protection function according to user requirements.
- The motor circuit has overload, short circuit, undervoltage and phase loss protection functions.
- The auxiliary circuit has local and remote control functions and local and remote automatic switching functions.
Technical Specifications
| No. | Items | Units | Data |
|---|---|---|---|
| 1 | Main Circuit Nominal Voltage | V | AC: 380 |
| 2 | Auxiliary Circuit Nominal Voltage | V | AC: 220, 380 |
| 3 | Rated Frequency | Hz | 50 |
| 4 | Rated Insulation Voltage | V | 660 |
| 5 | Rated Currency | A | ≤800A |
Precautions before Installation, Acceptance and Commissioning
After the product arrives, first check whether the packaging is intact. If any problems are found, notify the relevant department in time to find out the cause. For products that are not installed immediately, they should be installed according to normal application conditions and regulations, placed in appropriate places.
- The basic channel steel and bolts for product installation are provided by the user. The connection holes between the basic channel steel and the cabinet body (see Figure 1).
- After the product is installed, it should be inspected and tested before it is put into operation.
- Check whether the cabinet's coating has fallen off and whether the cabinet is dry and clean.
- Whether the on and off of main electrical appliances and auxiliary contacts are reliable and accurate.
- Whether the selection and wiring principles of the main components are consistent with the schematic diagram.
- The insulation value of the megohmmeter is not less than 1MΩ. When measuring, be careful to disconnect wires that cannot withstand voltage and electronic components.
■ Precautions for use
After a long time of opening and closing, the main contacts of low-voltage air circuit breakers will be partially burned and carbon substances will be produced, which will increase the contact resistance. Universal low-voltage air circuit breakers should be regularly inspected according to their instructions. Maintenance and repairs are required by the instructions.
Main Circuit Solution
Product Appearance and Installation Dimensions
| A | B | C | D | H |
|---|---|---|---|---|
| 800(600) Optional | 500(400) Optional | 650(450) | 450(350) | 1800(1600) Optional |
Ordering Instructions
- All Models of the product (including main circuit solution number and auxiliary circuit solution number).
- Main circuit system diagram, cabinet plan layout diagram.
- Electrical schematic diagram of auxiliary circuit.
- List of components in the cabinet (Main bus specifications).
- Cabinet color (If no requirement, light camel gray will be supplied), cabinet dimensions.
- Other special requirements that are inconsistent with the normal Application Conditions of the product.
Frequently Asked Questions (FAQ)
What standards does this electrical equipment comply with?
The electrical performance of the product fully complies with the GB 7251.1 and IEC60439-1 relevant provisions.
What are the environmental requirements for installing this equipment?
It requires an ambient temperature of -5℃ to +40℃ (24h average ≤ +35℃), altitude under 2000m, relative humidity ≤ 50% at +40℃, vertical inclination ≤ 5° during installation, and should be placed in areas without severe vibration, impact, or corrosion.
What protection features are built into the motor circuit?
The motor circuit is equipped with comprehensive protection functions, including overload, short circuit, undervoltage, and phase loss protection.
What are the main technical specifications of the circuit?
The main circuit has a nominal voltage of AC 380V, auxiliary circuit nominal voltage of AC 220V/380V, rated frequency of 50Hz, rated insulation voltage of 660V, and a rated current of ≤800A.
How should the air circuit breakers be maintained?
Due to potential contact burning and carbon build-up from long-term operation, universal low-voltage air circuit breakers must be regularly inspected, maintained, and repaired according to their instructions to avoid increased contact resistance.
What information is required when placing an order?
Orders must include the product model (with main/auxiliary circuit solution numbers), main circuit system diagram, cabinet plan layout, electrical schematics, component lists, cabinet dimensions, color (default is light camel gray), and any special non-standard requirements.
Model and Definitions
Use environment
- Ambient temperature: -5℃ ~+40℃, 24h The average temperature inside does not exceed +35℃.
- Altitude: no more than 2000m.
- Relative Humidity: No more than 50% when the ambient air temperature is +40℃; higher relative humidities can be achieved at lower temperatures (e.g. 90% at +20℃), taking into account temperature changes. Moderate condensation is permitted.
- When the equipment is installed, the inclination to the vertical plane should not exceed 5 °.
- The equipment should be installed in a place without severe vibration, impact and corrosion. Note: If the above conditions are exceeded, please consult with our company.
Product technical features
- The electrical performance fully complies with GB 7251.1 and IEC60439-1 relevant provisions.
- The feeder switch adopts a new type of molded case circuit breaker and compound release with small size, high breaking rate, short arcing (or no arcing). It has overload and short circuit protection devices and can be equipped with leakage protection function according to user requirements.
- The motor circuit has overload, short circuit, undervoltage and phase loss protection functions.
- The auxiliary circuit has local and remote control functions and local and remote automatic switching functions.
Technical Specifications
| No. | Items | Units | Data |
|---|---|---|---|
| 1 | Main Circuit Nominal Voltage | V | AC: 380 |
| 2 | Auxiliary Circuit Nominal Voltage | V | AC: 220, 380 |
| 3 | Rated Frequency | Hz | 50 |
| 4 | Rated Insulation Voltage | V | 660 |
| 5 | Rated Current | A | ≤800A |
Precautions before installation, acceptance and commissioning
After the product arrives, first check whether the packaging is intact. If any problems are found, notify the relevant department in time to find out the cause. For products that are not installed immediately, they should be installed according to normal application conditions. Regulations, placed in appropriate places.
- The basic channel steel and bolts for product installation are provided by the user. The connection holes between the basic channel steel and the cabinet body (see Figure 1).
- After the product is installed, it should be inspected and tested before it is put into operation.
- Check whether the cabinet's coating has fallen off and whether the cabinet is dry and clean.
- Whether the on and off of main electrical appliances and auxiliary contacts are reliable and accurate.
- Whether the selection and wiring principles of the main components are consistent with the schematic diagram.
- The insulation value of the megohmmeter is not less than 1MΩ. When measuring, be careful to disconnect wires that cannot withstand voltage and electronic components.
Precautions for use
After a long time of opening and closing, the main contacts of low-voltage air circuit breakers will be partially burned and carbon substances will be produced, which will increase the contact resistance. Universal low-voltage air circuit breakers should be regularly inspected according to their instructions. Maintenance and repairs are required by the instructions.
Main circuit solution
Product appearance and installation dimensions
| A | B | C | D | H |
|---|---|---|---|---|
| 800(600) Optional | 500(400) Optional | 650(450) | 450(350) | 1800(1600) Optional |
Ordering Instructions
- All Models of the product (including main circuit solution number and auxiliary circuit solution number).
- Main circuit system diagram, cabinet plan layout diagram.
- Electrical schematic diagram of auxiliary circuit.
- List of components in the cabinet (Main bus specifications).
- Cabinet color (If no requirement, light camel gray will be supplied), cabinet dimensions.
- Other special requirements that are inconsistent with the normal Application Conditions of the product.
Frequently Asked Questions
1. What is the standard operating temperature range for this equipment?
The ambient temperature range is -5℃ to +40℃. The 24-hour average temperature inside the installation environment must not exceed +35℃.
2. What are the key protection features of the motor circuit?
The motor circuit is equipped with comprehensive protection mechanisms, including overload, short circuit, undervoltage, and phase loss protection.
3. Does the equipment comply with international electrical standards?
Yes, the electrical performance of this product fully complies with the relevant provisions of GB 7251.1 and IEC60439-1 standards.
4. What are the main electrical specifications of the system?
The main circuit has a nominal voltage of AC 380V, insulation voltage of 660V, rated frequency of 50Hz, and rated current up to 800A.
5. How often should the low-voltage air circuit breakers be maintained?
Due to partial burning and carbon production on main contacts during long-term operation, regular inspection and maintenance should be carried out according to the product instruction manual to prevent increased contact resistance.
6. What basic information is needed when placing an order?
You need to provide the complete product models, main circuit system diagram, auxiliary circuit electrical schematic, component list, cabinet color, dimensions, and any special requirements.