Product Overview:

CY-MNS low-voltage withdrawable switchgear (hereinafter referred to as switchgear) is a relatively advanced low-voltage withdrawable switchgear in China, developed by our company after referring to ABB's RMNS series low-voltage switchgear in Switzerland and making comprehensive improvements. This product is composed of standardized and series of modules, and the drawers have reliable mechanical interlocking settings, making them safer and more reliable for users to use. This switchgear is suitable for three-phase five wire power supply systems with an AC frequency of 50-60Hz, rated insulation voltage and 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 to control power generation, transmission and distribution, energy conversion, and energy consumption equipment. The main busbar is compensated for reactive power through a capacitor compensation cabinet.

Usage conditions:

The surrounding air temperature shall not be higher than+40 ℃, not lower than -5 ℃, and its average temperature shall not be higher than+35 ℃ within 24 hours. The relative humidity of the surrounding air shall not exceed 50% at the highest temperature of+40 ℃, and there shall be a relatively high relative humidity at lower temperatures, such as 90% at+20 ℃. However, considering the possibility of occasional condensation of humidity due to temperature changes.

For indoor use, the altitude of the location of use shall not exceed 2000m

It should be installed in a place without severe vibration and impact, as well as in a place where electrical components are not subject to corrosion

Technical data:

1. Standards and Technical Specifications GB7251.1-1997 Low Voltage Switchgear and Control Settings (TTA)

2. JB/T9661-1999 Complete set of low-voltage withdrawable switch equipment

3. Overvoltage type IV III

4. Pollution level 3

5. Rated working voltage (Ue) (V) 660 380

6. Rated insulation voltage (Ui) (V) 660

7. Rated frequency (Hz) 50

8. Horizontal busbar

9. Rated current: 5000A 4000A 3150A 2500A 2000A 630A

10. Rated short time withstand current (1cw) (KA) 50,65,80

11. Rated peak withstand current (1pk) (KA) 105143176

12. Vertical busbar

13. Rated maximum working current ≤ 1000A

14. Rated short time withstand current 50KA

15. Rated peak withstand current 105KA

16. Shell protection level IP30 IP40

Structural features:

Due to the introduction of advanced technology from Swiss ABB and the improvement of technology on its original basis, this switchgear is more in line with China's national conditions. The cabinet body is composed of 25mm modular C profiles through connectors to form various cabinet frame structures and drawer units that can meet various needs. High strength flame-retardant engineering plastic components are widely used in MCC cabinets, making their safety performance more reliable. In addition, foreign functional models are modified and combined with 200mm modules, making it more conducive to the design requirements of mixing PC cabinets and MCC cabinets, At the same time, the extraction unit and the cabinet body have reliable interlocking settings to prevent the opening and closing with load when the switch is powered on, improving its safety. In addition, the cabinet body is generally assembled using cold rolled steel plates for galvanizing and passivation treatment, and can also be processed using aluminum zinc coated steel plates according to different user needs.