| Certification: | VDE, ISO9001 |
|---|---|
| Structure: | Cabinet |
| Product Name: | Air Insulation with Load Switch Ring Main Unit |
| Type: | Distribution Metering Box |
| Rated Voltage: | 12kv |
| Rated Current: | 630A |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier a) Air temperature: Maximum temperature: +40ºC ; Minimum temperature: 25ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90%.
c) Altitude above sea level: Maximum installation altitude: 2000m.
d)Ambient air not apparently polluted by corrosive and flammable gas, vapor etc,
e) No frequent violent shake.
| No | Item | Unit | Parameter | |||
| 1 | Rated voltage | kV | 12 | 24 | 36 | |
| 2 | Rated frequency | Hz | 50/60 | |||
| 3 | Rated current | A | 630/1250 | |||
| 4 | 1min Power frequency withstand voltage | wet | kV | 38 | 50 | 70 |
| dry | kV | 48 | 60 | 80 | ||
| 5 | Lightning impulse withstand voltage | kV | 75 | 125/150 | 170 | |
| 6 | Rated short circuit breaking current (peak) | kA | 80 | 63 | 50/40 | |
| 7 | Rated active load and close circuit breaking current | A | 63 | 50 | 50/40 | |
| 8 | Rated transferring current | A | 1700 | 1200 | 800 | |
| 9 | Rated short circuit making current (peak) | kA | 80 | 63 | 50/40 | |
| 10 | Rated cable(line) charging breaking current | A | 50 and 10 | |||
| 11 | Cable charge breaking current in earthing fault | A | 20 | 20 | 50 | |
| 12 | Rated withstand current (peak) | kA | 80 | 63 | 50/40 | |
| 13 | Short time withstand current (2s) | kA | 31.5 | 25 | 16 | |
| 14 | Mechanism life | times | 5000 | 3000 | 3000 | |
Suppliers with verified business licenses
Audited Supplier 
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