Box Changes
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European box change
成功应用案例 +
Product description：
My company produces the European box voltage grade 6KV, 10kV, 24KV and 35KV. Box is mainly composed of four parts, high voltage switch cabinet, transformer, low voltage cabinet and a shell, wherein, shell material points: composite plate, stainless steel plate, composed of ordinary steel plate, galvanized plate, cement shell material. Power supply scheme with double transformer. There are a number of prominent features:
1) single channel ventilation and maintenance design.
2) switch cabinet level 10K.
3) high strength of the outer shell, cover with anti 10 wind design structure, shell rain ability.
4) coastal products can be designed anti-corrosion and anti riot design.
5) can design the air conditioning type, the interior whole decoration type pre installed substation.
6) can be used to dry transformer can also be used for oil immersed type structure.
7) stable and safe operation.
8) the product has a network of companies to prove.
technical parameter
| High pressure unit | project | Company | parameter |
| Rated frequency | HZ | 50 | |
| Rated voltage | KV | 6 10 35 | |
| Maximum operating voltage | KV | 6.9 12 40.5 | |
| Rated current | A | 400、630、1250 | |
| Transfer current | A | 1200-2000 | |
| icw | KA | 12.5 (2S or 4S), 16 (2S or 4S), 20 (2S or 4S) | |
| Rated peak withstand current | KA | 31.5、40、50 | |
| Power frequency withstand voltage - to ground and time / isolation fracture | KV | 32/36 42/48 95/118 | |
| Lightning strike - the ground and time / isolation fracture | KV | 60/70 75/85 185/215 | |
| Rated short circuit breaking current (current limiting fuse) | KA | 31.5 | |
| Open off transformer capacity | KVA | 2500 | |
| Rated voltage | KV | 6、10、35 | |
| Transformer unit | Rated capacity | KVA | 30-2500 |
| Tap range | % | ±2*2.5%、±5% | |
| Linkage group | Yyn0、Dyn11 | ||
| Impedance voltage | % | 4、4.5、6、8 | |
| Rated voltage | V | 220、380、690、800 | |
| Low voltage unit | Main circuit rated current | A | 50-4000 |
| Branch current | A | 5-800 | |
| Rated short-time withstand current of main circuit | KA | 15（1s）、30（1s）、50（1s）、65（1s） | |
| Rated peak withstand current of main circuit | KA | 30、63、110 | |
| Shell | Protection level (conventional products) | High pressure chamber IP23; transformer room IP33; low pressure chamber IP33 | |
| noise level | dB | ≤50 | |
| Temperature rise level | 10K |
