RMNS type low-voltage draw-out switchgear cabinet

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This switchgear has introduced the technology of Swiss ABB and made technological improvements on its original basis, making it more suitable for China's national conditions. The cabinet body uses C-shaped profiles with a modulus of 25mm to form various cabinet frame structures and drawer units that can meet various needs through connectors. In MCC cabinets, a large number of high-strength flame-retardant engineering plastic components are used, making its safety performance more reliable. At the same time, the foreign functional boards are modified and combined with a modulus of 200mm, making it more conducive to the design requirements of mixed PC and MCC cabinet bodies. At the same time, the抽出 unit and the cabinet body have a reliable interlocking setting to prevent load shedding when the switch is energized, improving its safety. In addition, this cabinet body is generally assembled after cold-rolled steel plates are galvanized and passivated, and can also be processed with aluminum-zinc coated steel plates according to different user requirements.

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Product Details

Product Overview

The RMNS low-voltage switchgear assembly (hereinafter referred to as low-voltage switchgear) is a product re-registered by our company. It has been improved in terms of the selection of electrical components and the cabinet structure, combined with the development trend of low-voltage switchgear assemblies in China. The electrical and mechanical properties of this product fully meet the technical requirements of the original MNS product.

This switchgear is applicable to three-phase five-wire power supply systems with an alternating current of 50 - 60Hz, a rated insulation voltage of 690V, and a working voltage of 660V and below. It can be used in power plants, substations, industrial and mining enterprises, buildings, hotels, airports, docks, and communication centers such as radio and television stations. It is used for the control of power generation, power transmission and distribution, power conversion, and power consumption equipment. Reactive power compensation is carried out on its main bus through the capacitor compensation cabinet.

Structural features:

This switchgear has introduced the technology of ABB in Switzerland and made technological improvements on its original basis to make it more suitable for China's national conditions. The cabinet body uses C-shaped profiles with a modulus of 25mm and connects them through connectors to form various cabinet frame structures and drawer units that can meet various requirements. In MCC cabinets, a large number of high-strength flame-retardant engineering plastic components are used, making its safety performance more reliable. At the same time, the foreign functional boards are modified and combined with a modulus of 200mm, making it more conducive to the design requirements of mixed PC and MCC cabinet bodies. At the same time, the drawer unit and the cabinet body have a reliable interlocking device to prevent load-shedding when the switch is energized, improving its safety. In addition, this cabinet body is generally assembled after cold-rolled steel plates are galvanized and passivated. It can also be processed with aluminum-zinc coated steel plates according to different user requirements.

Technical indicators:

○ Rated insulation voltage UI: 690V/AC

○ Rated operating voltage Ue: 660V, 380V/AC

○ Rated impulse withstand voltage Uimp: 8kV

○ Overvoltage category: Ⅲ

○ Pollution degree: 3

○ Rated frequency: up to 50 Hz

Main busbar

● Rated current Ie: up to 5500A (6300A)

● Rated peak withstand current lpk: up to 220kA

● Rated short-time withstand current lcw: up to 150kA

Power distribution busbars