Overview
YB series substation is a kind of compact power distribution device that integrates high voltage electrical equipment, transformer, and low voltage electrical equipment. It can be used in high-rise buildings, building in urban and rural areas, residential communities, high-tech development areas, small and medium-size factories. mining areas, oil fields, temporary construction sites, and other premises. It also can be used for acceptance and distribution of power in the power distribution systems of 6-15KV, 50HZ (60HZ), ring main power distribution system, and double power supply or radiate terminal power distribution system.
Operating Conditions
1. Altitude: 1000m;
2. Ambient temperature: -25℃ ~+40℃;
3. Maximum monthly average temperature: +30℃,Maximum annual average temperature+20℃;
4. Relative humidity: Daily average not exceeding 95%,Monthly average not exceeding 90%;
5. Seismic level: horizontal acceleration 0.4 m/s, vertical acceleration 0.15 m/s;
When the above normal use conditions are exceeded, the user can negotiate with the company.
Technical Specification
| Item | Unit | Parameter | |||
| HV Unit | Rated frequency | Hz | 50 | ||
| Rated Voltage | V | 6 | 10 | 35 | |
| Maximum Operating Voltage | V | 6.9 | 11.5 | 40.5 | |
| Rated Current | A | 400、630 | |||
| Transfer current | A | 870 | |||
| Power fFrequency Withstand Voltage (to ground/isolation break) | KV | 42/48 | |||
| Lightning Impulse Withstand Voltage (ground/isolation fracture) | KV | 75/85 | |||
| Rated Short-Circuit Breaking Current | KA | 31.5 | |||
| Transformer Unit | Rated Voltage | V | 6、10、35 | ||
| Rated Capacity | KVA | 10-1250 | |||
| Tapping Range | % | ±2×2.5%、±5% | |||
| Connection Group | Yyn0、Dyn11 | ||||
| Impedance Voltage | % | 4、4.5、6、8 | |||
| LV Unit | Rated Voltage | V | 220、380、690、800 | ||
| Main Bus Rated Current | A | 50-4000 | |||
| Branch Current | A | 5-800 | |||
| LV Unit | Protection Level(Standard) | HV:IP33, Transformer:IP23,LV:IP33 | |||
| Noise Level | dB | ≤50 | |||