XL-21 floor-standing distribution cabinet

The XL-21 floor-standing distribution cabinet below 630A is used for power and lighting distribution in power plants and industrial or mining facilities with three-phase three-wire, four-wire or five-wire AC systems at 500V or below. It is designed for indoor installation against a wall and maintenance from the front.

Ambient temperature: -50°C to +40°C, with a 24-hour average not exceeding +36°C.

Altitude: no more than 2500m.

Relative humidity: not more than 50% at surrounding air temperature +40°C.

Higher relative humidity at lower temperatures (e.g. 90% at +20°C), taking into account that temperature changes allow for moderate condensation

The gradient with the vertical side at the time the device is installed shall not exceed 5°.

The equipment should be installed at sites free from severe vibration, shock and corrosion.

Note: If the above conditions cannot be met, the user may consult with the company if it has special requirements.

(c) Installation of electrical distribution devices inside the in-land distribution cabinets against the wall, open in front of a single door. Its basic structure is made of steel plate bends and angular steel welds. A knife switch handle may be installed on the front-right side for power cut-off and connection operations, an operating button may be installed on the door of the box, a signal light and display instrument, and when the case is opened, the interior equipment of the distribution box is all open and accessible for overhaul and maintenance. This tank is equipped with air breakers, which are protected as short circuits, as well as contact and heat relays. The door and the shell are welded with a snail to the ground to ensure reliable connection.

When the product arrives, it should first check that the packaging is intact, and it should be revealed that the relevant authorities should be informed in a timely manner of the reasons, and that products not immediately installed should be placed in an adapted place in accordance with normal conditions of use.

1 The product contains bolts for the base tank steel, which are self-prepared, and the base tank steel is connected to the container.

2. Inspection and testing of products prior to their commissioning after installation;

A. Check if the cabinet has been defaced; Is the cabinet dry, clean:

B. Checking the reliability and accuracy of major electrical and auxiliary access points;

C. Checks whether the selection of the main element, the wiring principle, is consistent with the rationale drawings;

D. An insulation value of 500 mega-eat shall not be less than 1 m and measurements shall be made in such a way as to be free from electrical pressure and electrical components.

3. Use of vigilance

Repeated opening and closing of low-voltage air circuit breakers can cause localized burning and carbon deposits on the main contacts, increasing contact resistance. Maintain and service these circuit breakers regularly in accordance with their operating instructions.