Product introduction

XL21 low-voltage power distribution cabinet can be widely used in metallurgy, mining, petroleum, chemical, electric power, building materials, mechanical processing, transportation, hotels, restaurants and other three-phase four-wires with AC 50Hz and rated working voltage of 380V In the power distribution and lighting distribution of the power system, it protects the circuit from overload, short circuit and leakage, and performs normal conversion of the circuit. This product is an indoor enclosed device with an enclosure protection level of IP30 and a product conforming to GB7251.12. And IEC60493-1 and other standards.

Environmental conditions for use

The altitude must not exceed 2000m.

The ambient temperature is not higher than +40°C, not lower than 10°C, and its average temperature shall not be higher than +35°C within 24h.

The relative humidity of the surrounding environment does not exceed 50% at +40°C on a day. At lower temperatures, higher relative humidity is allowed (for example, 90% at +20°C).

There is no conductive or explosive dust, no corrosive metal and insulating gas or steam at the operating location.

The earthquake intensity does not exceed 8 degrees.

The inclination of the vertical surface of the equipment installation should not exceed 5 degrees.

Model and its meaning

Structural Features

This low-voltage power distribution cabinet (box) is a closed wall-mounted device, which is a low-voltage power distribution equipment for single-sided opening operation and maintenance. The basic structure is made of angle steel and thin steel plate bending and welding, which has strong versatility. The advantages of flexible structure and convenient installation; according to different user requirements, there are multiple device appearance structures, such as floor box structure and wall-mounted control box structure.

floor box-type distribution box, the knife switch operating handle is installed on the upper right column of the box; it can be used as a switching power supply. A voltmeter can be installed in front of the distribution box as needed to indicate the voltage of the busbar. There is a door in the front of the power distribution cabinet (box). After the door is opened, all the equipment in the power distribution box is exposed, which is convenient for maintenance. The distribution box adopts domestic self-designed molding components, and has the characteristics of compact structure, convenient maintenance, and flexible wiring schemes. In addition to air circuit breakers and fuses as short-circuit protection, the distribution box is also equipped with contactors and thermal relays. The front door of the box can be equipped with operating buttons and indicator lights.

The power bus can be accessed through the knock-out hole on the top plate of the box, or it can be connected to the top of the box from the bottom of the box in the cable trench. There are four eyebolts for transportation, installation and maintenance, and the power box bottom frame. There is a grounding device, which should be grounded after installation.

Main technical parameters

Outline and size of switch cabinet