XL-21 POWER

The XL-21 power box is widely used in power plants and industrial and mining enterprises. It is used for power or lighting distribution in distribution systems with three-phase AC below 500V, including three-phase three wire, three-phase four wire, and three-phase five wire. It is installed indoors against the wall, operated in front of the screen, and maintained in front of the screen.

The box is a fully enclosed structure, assembled from C profiles or 8MF profiles. The box adopts a new type of rotating load isolation switch, which can be operated with load. The front door is equipped with voltage and current indicating instruments, as well as signal lights, buttons, conversion switches, and other main components.

This distribution box adopts self-designed new components, with a compact structure, beautiful and elegant appearance, convenient maintenance, and multiple wiring schemes for users to choose from.

◇ Environmental temperature: -5 ℃ to +40 ℃, and the average temperature within 24 hours shall not exceed +35 ℃.

◇ Altitude: not exceeding 2000m;

◇ Relative humidity: not exceeding 50% when the ambient air temperature is +40 ℃; At lower temperatures, there can be higher relative humidity (such as 90% at +20 ℃), allowing for moderate condensation due to temperature changes;

◇ During equipment installation, the inclination from the vertical plane should not exceed 5 °.

◇ The equipment should be installed in a place without severe vibration, impact, and corrosion;

Note: When ordering this product beyond the above conditions, please consult with our company.

◇ The electrical performance fully complies with the relevant provisions of GB 7251.1 and IEC 60439-1;

◇ The feed out switch adopts a new type of molded case circuit breaker and multiple release with small volume, high breaking, and short (or no) flashover, which has overload and short circuit protection functions and can be equipped with leakage protection functions 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, as well as local and remote automatic switching functions.

◇ After the product arrives, the first step is to check whether the packaging is intact and undamaged. If problems are found, relevant departments should be notified in a timely manner to find the cause. For products that are not installed immediately, they should be placed in an appropriate location according to the requirements of the usage conditions.

◇ The product installation foundation channel steel and bolts are provided by the user, and the connection holes between the foundation channel steel and the cabinet body;

◇ After installation, the product is inspected and tested before being put into operation:

• ◇ Check if the paint film on the cabinet has fallen off and if the cabinet is dry and clean.
• ◇ Whether the connection and disconnection of main electrical appliances and auxiliary contacts are reliable and accurate.
• ◇ Whether the selection and wiring principle of the main components are consistent with the schematic diagram.
• ◇ Use a 500V megohmmeter with an insulation value not less than 1%. When measuring, pay attention to disconnecting and not withstanding voltage or electronic component wiring.

◇ Precautions for use:

After multiple opening and closing of low-voltage air circuit breakers, the main contact may be locally burned and carbon-like substances may be produced, resulting in an increase in contact resistance. Regular maintenance and repair of universal low-voltage air circuit breakers should be carried out according to their user manual requirements.

◇ All models of the product (including the main circuit scheme number and auxiliary circuit scheme number);

◇ Main circuit system diagram and cabinet layout plan;

◇ Electrical schematic diagram of auxiliary circuit;

◇ List of components in the cabinet (specifications of main busbar);

◇ Cabinet color, (if not required, supplied in light camel gray) box size;

◇ Other special requirements that do not comply with the product's usage conditions shall be resolved through negotiation with the manufacturer.