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China XL-21 AC Low Voltage Power Distribution Cabinet - Reliable Suppliers and Factory Solutions
Model and Definitions
Use environment
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Ambient temperature: -5℃ ~+40℃, 24h The average temperature inside does not exceed +35℃.
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Altitude: no more than 2000m.
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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.
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When the equipment is installed, the inclination to the vertical plane should not exceed 5 °.
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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
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The electrical performance fully complies with GB 7251.1 and IEC60439-1 relevant provisions.
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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.
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The motor circuit has overload, short circuit, undervoltage and phase loss protection functions.
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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.
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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).
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After the product is installed, it should be inspected and tested before it is put into operation.
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Check whether the cabinet's coating has fallen off and whether the cabinet is dry and clean;
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Whether the on and off of main electrical appliances and auxiliary contacts are reliable and accurate;
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Whether the selection and wiring principles of the main components are consistent with the schematic diagram;
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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.
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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.
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
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All Models of the product (including main circuit solution number and auxiliary circuit solution number).
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Main circuit system diagram, cabinet plan layout diagram.
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Electrical schematic diagram of auxiliary circuit.
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List of components in the cabinet (Main bus specifications).
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Cabinet color (If no requirement, light camel gray will be supplied), cabinet dimensions.
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Other special requirements that are inconsistent with the normal Application Conditions of the product.
Frequently Asked Questions (FAQ)
Q1: What are the standard ambient temperature limits for this equipment?
A1: The equipment is designed to operate in an ambient temperature range of -5℃ to +40℃. The average temperature inside the installation environment must not exceed +35℃ over a 24-hour period.
Q2: Which international standards do the electrical components comply with?
A2: The electrical performance of this equipment fully complies with the provisions of the GB 7251.1 and IEC60439-1 standards.
Q3: What protection features does the motor circuit provide?
A3: The motor circuit is equipped with comprehensive protection mechanisms, including overload, short circuit, undervoltage, and phase loss protection.
Q4: What are the nominal voltages for the main and auxiliary circuits?
A4: The nominal voltage for the main circuit is AC 380V, while the auxiliary circuit can operate at AC 220V or AC 380V, with a rated frequency of 50Hz.
Q5: What maintenance is required for the low-voltage air circuit breakers?
A5: Long-term opening and closing cycles can burn the main contacts and produce carbon residue, which increases contact resistance. Regular inspection, maintenance, and repairs should be carried out in accordance with the manufacturer's instruction manual.
Q6: What details must be specified when placing an order?
A6: Orders should specify the full product model (including solution numbers), main circuit system and layout diagrams, auxiliary electrical schematics, component list, cabinet color/dimensions, and any other special application requirements.