XL-21 Model power box

Product Overview
The XL-21 power box is widely used in power plants and industrial and mining enterprises for power or lighting distribution in distribution systems such as three-phase three wire, three-phase four wire, and three-phase five wire below 500V. 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 or 8MF profiles. The box adopts a new type of rotary load isolation switch, which can be operated with load. The front door is equipped with voltage and current indicator instruments, as well as main control components such as signal lights, buttons, and conversion switches. This distribution box adopts newly designed components, which are compact in structure, aesthetically pleasing in appearance, and easy to maintain. Multiple wiring schemes are available for users to choose from

Usage conditions
Environmental temperature: -5 ℃~+40 ℃, and the average temperature within 24 hours does 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+20C), allowing for moderate condensation due to temperature changes
The inclination angle between the equipment and the vertical plane during installation should not exceed 5 °
The equipment should be installed in a place without severe vibration, impact, and corrosion
Note: If ordering this product exceeds the above conditions, please consult with our company
Product Technical Features
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 compound release with small size, high breaking capacity, short arcing (or no arcing), equipped with overload and short circuit protection functions, 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, as well as local and remote automatic switching functions

Precautions before installation, acceptance, and commissioning
After the product arrives, the first thing to check is whether the packaging is intact and undamaged. If any 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 suitable places according to the regulations 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 are provided
After installation, the product should undergo inspections and tests before being put into operation
Check whether the cabinet body has peeled off the multi-layer paint film, and whether the inside of the cabinet is dry and clean
Whether the on/off of main electrical appliances and auxiliary contacts is reliable and accurate
Whether the selection and wiring principles of the main components are consistent with the schematic diagram
Use a 500V megohmmeter with an insulation value not less than 1M Ω. When measuring, be careful not to disconnect the wires that cannot withstand voltage and electronic components
Precautions for use
After multiple cycles of opening and closing, low-voltage air circuit breakers and other devices may cause local burns to the main contacts and produce carbon based substances, resulting in increased contact resistance. Universal low-voltage air circuit breakers should be regularly maintained and inspected according to their instructions

Ordering Notice
All product models (including main circuit scheme number and auxiliary circuit scheme number)
Main circuit system diagram, cabinet layout plan
Electrical schematic diagram of auxiliary circuit
List of components inside the cabinet (specifications of the main busbar)
Cabinet color, (if not specified, supplied in light camel gray) box size
Other special requirements that do not comply with the product's usage conditions should be resolved through negotiation with the manufacturer