The standardized cabinet is composed of standardized and series modules, and the drawers are equipped with reliable mechanical interlocking devices, making it safer and more reliable for users during operation.
This switchgear is suitable for three-phase five-wire power supply systems with an AC frequency of 50 (60) Hz, a rated working voltage of 400V and 660V, and a rated current of 5000A or less. It can be used in power plants, substations, industrial and mining enterprises, hotels, airports, docks, and communication centers such as radio and television stations, to control power generation, power transmission and distribution, power conversion, and power consumption equipment. It can also perform reactive power compensation for the main busbar through capacitor compensation cabinets.
This product complies with the requirements of standards such as GB7251.12-2013 "Low-voltage Switchgear and Controlgear Assemblies" and IEC61439-2:2011 "Low-voltage Switchgear and Controlgear Assemblies".
Normal Service Conditions
● Ambient temperature: Upper limit +40°C, lower limit -15°C (down to -45°C with special processes);
● Altitude not exceeding 2500m (up to 4000m with special processes);
The relative humidity of the surrounding air shall not exceed 50% at the maximum temperature of +40°C. At lower temperatures, the relative humidity is higher, such as 90% at +20°C. However, it is considered that moderate condensation may occur occasionally due to temperature changes.
It should be installed in a place free from severe vibration and shock, and where the electrical components will not be corroded.
When the above normal usage conditions are exceeded, the user may negotiate with the manufacturer to determine.
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Technical SpecificationTechnical Specification |
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Overvoltage category |
IV Ill |
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Pollution Degree |
3 |
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Rated operating voltage(V) |
400/660 |
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Rated insulation voltage(V) |
660/1000 |
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Rated frequency(Hz) |
50(60) |
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Horizontal busbar |
Rated Current |
≤5000A |
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Rated short-time withstand current (kA) |
50,65,80 (1srms) |
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Rated peak withstand current(kA) |
105,140, 176 (0.1sMaximum) |
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Vertical busbar |
Rated maximum operating current |
≤1000A |
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Rated short-time withstand current |
50kA |
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Rated peak withstand current |
105kA |
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Degree of protection |
IP30 IP40 (special Instructions) |
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Overall Dimensions
Structure and Dimensions
The MNS series switchgear is installed vertically and not against a wall. The rear of the cabinet is the cable trench for outgoing cables. To facilitate maintenance, the distance from the rear to the wall is usually 800 to 1200 mm. The installation distance at the front is shown in the following figure.
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