
380/400/660V 4000A Low Voltage Switchgear Use In Power Generation And Power Supply System
It is suitable for three-phase AC 50HZ, rated voltage 40.5KV indoor complete power distribution device. It is mainly used as power distribution, power transmission and large high-voltage motors of power plants, industrial and mining enterprises and institutions, power distribution and secondary substations of power systems Start and other places for control, protection and monitoring purposes.
Description
We strive to reflect the concept of combining modern design concepts, mature technical levels and professional and considerate services in our Unitized Substation, Low-voltage power distribution cabinet, pre-assembled substation. Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers. Our strong company strength and strict quality control system guarantee the product quality and price advantages.
It is suitable for three-phase AC 50HZ, rated voltage 40.5KV indoor complete power distribution device. It is mainly used as power distribution, power transmission and large high-voltage motors of power plants, industrial and mining enterprises and institutions, power distribution and secondary substations of power systems Start and other places for control, protection and monitoring purposes.
Technical Parameters
1.Rtaed Voltage: 40.5kv
2.Rated Current:2500A/630A
3.Temperature rise current:1.1Ir
4.Rated power frequency 1min withstand voltage (phase to ground):95kV
5.Peak value of rated lightning impulse withstand voltage (1.2 ÷ 50s) (phase to ground):185kV
6.Rated short-circuit breaking current:31.5kV
7.Rated short-circuit making current:80kA
8.Rated short-time withstand current and duration:31.5/4 25/4 kA/s
9.Rated peak withstand current:80kA
10.Short time power frequency withstand voltage of auxiliary and control circuit:2kV
Advantage
1.40.5kV switchgear is simple in structure,convenient in maintenance and convenient in overall layout and operation;
2.The supporting interlocking action is stable and reliable;
3.Wide use;
4.Reliable performance;
Configuration information
The standard configuration of the switchgear cabinet includes: housing, shutter mechanism, trolley guide rail and rail interlocking mechanism, each component mounting plate or mounting beam, casing plate (aluminum plate or steel plate),door plate, hinge, door lock, viewing window (tempered glass), cable hoop, cable sealing ring, etc.

| Rated Voltage | kV | 40.5 | ||
| Rated Current | A | 2000 | ||
| Rated Capacity | Hz | 50 | ||
| Rated short circuit breaking current | AC component | kA | 31.5 | |
| Hundred current component | % | 51 | ||
| Rated short circuit breaking current | ms | 45 | ||
| Rated short circuit making current | kA | 80 | ||
| Rated peak withstand current | kA | 80 | ||
| Rated short time withstand current | kA | 31.5 | ||
| Rated short circuit duration | s | 4 | ||
| Rated short time power frequency withstand voltage | Dry Type | kV | 95 | |
| Wet Type | kV | |||
| Rated lightning impulse withstand voltage | kV | 185 | ||
| Rated operating impulse withstand voltage | kV | |||
| Rated charging pressure for breaking and insulation | Mpa | |||
| Rated supply voltage of operating mechanism | V | DC220 | ||
| Rated operation sequence | O-0.3s-CO-180s-CO | |||
| First upgrade coefficient | 1.5 | |||
| Mechanical life | Time | VCB 50,Earthing Switch 2000 | ||
| Protection level | Out Enclosure :IP4X | |||
| Closing speed / opening speed | m/s | 0.5-0.9/1.2-1.6 | ||
| Closing time | ms | 30--75 | ||
| Opening time | ms | 20--55 | ||

Our 380/400/660V 4000A Low Voltage Switchgear Use In Power Generation And Power Supply System are all over the country in many big cities, after continuous market tempering, some products have entered the international market. We support our buyers with ideal high quality products and high level service. Friends both at home and abroad are warmly welcome to establish everlasting business relations with us.
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