Low-voltage withdrawable switchgear is widely used in power plants, metallurgical steel rolling, petrochemical, light industry and textile, port and wharf, buildings and hotels, etc. as a power distribution and centralized motor control device for AC three-phase four-wire or five-wire system, with a voltage of 380V, 660V, a frequency of 50Hz, and a rated current of 5000A or less.
This product complies with the requirements of GB7251.12-2013 "Low-voltage Switchgear and Controlgear Assemblies" and IEC61439-2:2011 "Low-voltage Switchgear and Controlgear Assemblies", etc. standards.
Model and Features
Normal Service Conditions
● Ambient temperature: Upper limit +40°C, lower limit -15°C (can reach -45°C with special processing);
● Altitude not exceeding 2500m (can reach 4000m with special processing);
The relative humidity shall not exceed 50% at the maximum temperature of +40°C. At lower temperatures, a higher relative humidity is permitted, such as 90% at +20°C.
● Clean air, free of corrosive and explosive gases, and free of conductive and insulating material-damaging dust;
● No significant shaking or shock vibration, vertical installation, and the inclination should not exceed 5 degrees;
● The switchgear is suitable for transportation and storage at the following temperatures: -25°C to +55°C, and for a short period of time (not exceeding 24 hours) up to +70°C.
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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Description |
Unit |
Specifications |
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Rated insulation voltage |
V |
660/1000 |
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Rated operating voltage |
v |
4400/660 |
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Rated operating voltage of auxiliary circuit |
V |
AC380,220, DCllO,220 |
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Rated busbar current |
A |
1000,1250,1600,2000,2500,3200,4000,5000 |
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Rated short time withstand current of busbar(1s rms) |
kA |
50,80 |
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Rated peak withstand current of busbar |
kA/0.1s |
105,140,176 |
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Rated branch busbar current |
A |
630,1000,1250,1600 |
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Rated short time withstand current of Branch busbar (1s rms) |
kA |
30kA,50kA |
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Rated peak withstand current of branch bus |
kA/0.1s |
63kA,105kA/0.1s |
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Degree of protection |
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IP30,IP40 |
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Bus Setup |
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Three phase four-wire, Three phase five-wire |
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Operation |
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Local, Distance, Automatic |
Overall Dimensions
Structure and Dimensions
The installation of the GCK(L) series switchgear is non-wall vertical installation. The rear of the cabinet is the cable trench for the outgoing cables. To facilitate maintenance, the distance from the rear to the wall is usually 800 to 1200mm. The distance for front installation is shown in the following figure.
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