Overview

MNS low-voltage power distribution cabinet is a combined low-voltage switchgear assembled with standard modulus (hereinafter referred to as the device). This device is suitable for power supply and distribution system with AC 5060)Hz and rated working voltage of 690V and below. It is used for power generation and transmission. Control of electrical energy conversion and electrical energy consumption equipment. This device complies with the national standard of |EC439VDE660 and GB7251.1-1997 "Low-voltage switchgear and control equipment", JBT9661-1999 "Low-voltage withdrawable switchgear".

Features

This device is a product developed in the late 1990s and has been at the leading level in China after many improvements.

■ Compact design: It can accommodate more functional units in a smaller space. Up to 36 8E4 drawer units

■Strong structure is versatile. Flexible assembly: C profiles with a modulus of 25 mm can meet various structural forms, protection levels and operating environment requirements.

■ Adopt standard module design: It can form standard units such as protection and operation conversion, and users can choose assembly as needed. More than 200 kinds of assemblies can be used to form different frame structures and drawer units.

■ High safety: a large number of high-intensity yang-burning engineering plastic components are used. It effectively enhances the protection and safety performance. It has anti-arc design and personal safety for operators.

■High technical performance: the main parameters reach the level of contemporary international technology

■Easy assembly: no need to specialize in the whole series of special tools

■The board is made of cold plate or aluminum zinc plate. Cabinet free maintenance

■Easy to update equipment

Normal use environmental conditions

■The ambient air temperature is not higher than +40 ° C. Not less than -10 c. The average temperature within 24 hours is not higher than +35 C,

■ Atmospheric conditions: air clean. Relative humidity does not exceed 50% at a maximum temperature of +4C. At higher temperatures, a larger relative humidity is allowed, such as 90% at +20°C, but it should be considered due to temperature changes. Occasionally produce moderate condensation

■Indoor use. The altitude of the place of use must not exceed 2000m

■ This device is suitable for transportation and storage processes at the following temperatures: between -25 ° C and +55 c in a short period of time (not exceeding 24 h) up to +70 ° CC. These devices should not be subject to any of these extreme temperatures. Recovered damage

■If the above conditions of use cannot be met, it should be resolved by the user and the manufacturer.

■When this unit is used in offshore drilling platforms and nuclear power plants. A separate technical agreement should be signed

Basic parameters

Rated insulation voltage AC 6901000V

Rated working voltage AC 400690V, 230/400V

Rated frequency 50 (60) Hz

Main busbar maximum working current 6300A

Vertical busbar maximum operating current 1000A

Main bus short-time (1s) withstand current (RMS) 100kA

Main busbar short-time withstand peak current (maximum}250kA

Vertical busbar short-time rated withstand current 50kA

Vertical busbar short-time withstand peak current (maximum) 125kA

When the protection grade IP30.IP40.P54 is ordered for P54 protection level, it must be contacted with the manufacturer in time.