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| MNS Low-voltage withdrawable switchgear |
| Application | |
| MNS series applied to power plants, transformer substation,
petrochemical, metallurgical rolling, light industry and textile
factories and enterprises, and residential quarters, high-rise
buildings and other places, as the exchange of 5-60) _z, rated
voltage of AC 660V and below power distribution system electrical
equipment, power conversion, distribution and control purposes. |
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Main technical parameters | |
| Standard | Through the switchgear assembly type test（TTA） | IEC439.1-1992GB7251.1-1997 | | Electrical parameters | Rated insulation voltageUi | AC 1000V, 1500V dc | | Rated voltageUe | AC 690V, DC750V | | Rated impulse withstand voltageUimp | 8kV | | Over-voltage level | Ⅲ | | Pollution Level | 3 | | Rated frequency | 60Hz | | The level of the main busbar rated currentle | 5500A | | The level of the main bus rated peak withstand currentipk | 250kA | | The level of the main bus rated short time withstand currenticw | 100kA | | Branch busbar rated cablele | To1200A | | Protection class | To |
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| Structural characteristics | |
| 1, device rack structure is formed by the C-profile device. C-type
profile is based on E = 25mm for the module installation 7L made of
steel bending, all counters are added and the interior partitions
for zinc passivation. 2, device design and materials can be used to
prevent the maximum fault arc occurs, the event of a fault arc can
be extinguished in a short time. 3, the device used were CFC, or
halogen free plastic material, it has a flame-retardant and self
extinguishing characteristics. |
