I. General
Box-type substation is applicable to high-rise buildings, substations with street frontage, urban street lamps, villages, oil field, mines, factories, wharfs, parks, shopping malls and temporary device and places. It has lots of advantages, such as small occupation space, strong set character, short construction duration, less investment, convenient installation and maintenance, lighter weight, shorter power supply radius and movable feature.
II. Technical Parameters
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Items |
High-voltage Load Switch |
Transformer |
Low Voltage Switch |
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Rated Capacity KVA |
50-1000KVA |
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Rated Voltage KV |
10 |
10/0.4 |
0.4 |
10 |
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Rated Current A |
400 |
630 |
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630 |
100 |
2000 |
2500 |
6.3-40 |
50-100 |
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Breaking Current KA (Effective value) |
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50 |
Rn3 |
SKL.J |
Rn3 |
SKL.J |
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|
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22 |
31.5 |
20 |
50 |
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4s Thermal Stability Current KA (peak) |
12.5/2s |
20/2s |
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Dynamic Stability Current KA (peak) |
31.5 |
50 |
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Short-circuit Closed Current KA (peak) |
31.5 |
50 |
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Power Frequency Withstand Voltage KV/min |
To ground 42 |
Oil immersed transformer35 |
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Fracture 48 |
Dry-type transformer28 |
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Lightning Impulse Withstand Voltage KV |
To ground 75 |
75 |
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Break 85 |
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Upgrade Level, dB |
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Oil immersion≤55 |
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Dry-type≤65 |
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Protection Grade |
IP3X |
IP2X |
IP3X |
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