Product Overview
MNS LV withdrawable switchgear (hereinafter referred to as device) is manufactured by standard module through consulting MNS series low voltage switch cabinet of Switzerland ABB Co-mpany, and synthetically improved. The device is applicable to the system with AC 50Hz, rated working voltage 660V and below, used as control device for various power generation, transmission, distribution, power transfer and power consumption device. It is widely used in low voltage distribution system of various mining enterprise, tall building and hotel, municipal construction etc. Besides the general land use, after special disposal, it also can be used for marine petrol drill taken platform and nuclear power station.
Model and Meaning
Technical Parameters
- The ambient air temperature is not higher than +40℃, not lower than -5℃, and the average temperature of 24 h is not higher than +35℃;
- The surrounding air is clean, the relative humidity is not more than 50% at the highest temperature of +40℃, and the higher relative humidity is allowed at lower temperatures, for example, 90% at +25 ℃, but it should be considered that moderate condensation may occasionally occur due to temperature changes;
- Indoor use, the altitude does not exceed 2000m;
- in places where there is no significant shaking or shock;
- Pollution level: 3;
- Seismic intensity: 8 levels;
- The temperature during the transportation and storage of the switchgear can be between -25℃ and 55℃, and the temperature can reach +70℃ in a short time (not more than 24h);
- If the above conditions of use cannot be met, it should be resolved by the user and the manufacturer.
Technical Parameters
| Project | Parameter |
| Rated insulation voltage | 690VIAC |
| Rated operating voltage | 400VIAC |
| Rated impulse withstand voltage | 8kV |
| Rated frequency | 5060Hz |
| Main busbar maximum operating current | 6300A |
| Main busbar rated withstand current | 100kA |
| Main busbar rated peak withstand current | 220kA |
| Distribution bus(vertical bus)maximum operating current | 1200(2000A) |
| Distribution bus(vertcal bus)shorttime peak current | 176kA |
| Protectian level | IP30~IP54 |
Structural features
The basic cabinet of device is combined assembly structure. Basic structural pieces of cabinet is zinc plated, connected and firmed into basic bracket through self tappinglocking screw or 8.8 grade square corner screw.
According to the change demand of project, additionally add corresponding gate, closing board,baffle plate, installationsupport and the components of bus bar, function units, to assemble a complete set of device. Perform modulus to interior component and compartment size (Modulus unite=25mm).
Internal structure
