Product overview
This product fully conforms to the standard of GB17467 "High Voltage and Low Voltage Prefabricated substation". It is suitable for urban public power distribution, street lamp power distribution, industrial and mining enterprises, urban buildings, residential areas, oil fields, docks, hotels, parks and construction sites, etc. It can realize ring network or terminal power supply mode
Model and meaning
Service condition
● Altitude: ≤ 1000m;
● Ambient temperature: -25°C ~ +40°C;
● Temperature: Maximum monthly average temperature +30°C, maximum annual average temperature +20°C;
● Relative humidity: daily average not more than 95%, monthly average not more than 90%;
● Shock-proof level: horizontal acceleration 0.4m/s², vertical acceleration 0.15m/s²;
● The installation site has no severe impact, no serious pollution and chemical corrosion, no conductive dust and explosion risk, please negotiate with our company to solve when it does not meet the requirements of normal operating conditions.
Product structural feature
● This substation consists of a high-voltage room, a transformer room, and a low-voltage room, which can be arranged in a U-shape or a triangular shape;
● With terminal, ring network or dual power supply mode;
● It can be made into a single or double transformer power supply solution;
● Oil-immersed power transformer and dry-type power transformer can be selected;
● The box body is equipped with enough natural vents and heat insulation measures, which can ensure the normal operation of all electrical equipment (forced cooling can be used if users need)
● Complete "five prevention" function, convenient operation and maintenance, safe and reliable operation;
● The enclosure is made of stainless steel, aluminum alloy, cold-rolled plate, color steel composite plate, non-metal or a combination of two. It is anti-aging, flame retardant, anti-corrosion, waterproof, dustproof and adaptable to long-term outdoor use conditions;
● Small size, light weight, beautiful appearance and environment coordination;
● When SF6 load switch cabinet is used, the overall size of the box is small, which is more suitable for community construction and street lamp engineering renovation.
● High-voltage ring main unit can be equipped with network automation terminal (RTU) to realize reliable detection of short circuit and single-phase grounding fault. It has "four remote" function, which is convenient for automatic upgrade of distribution network.
Technical parameter
| Item | Unit | Parameter | |||
|---|---|---|---|---|---|
| HV unit | Rated frequency | HZ | 50 | ||
| Rated voltage | KV | 6 | 10 | 35 | |
| Max. operating voltage | KV | 6.9 | 11.5 | 40.5 | |
| Rated current | A | 400、630 | |||
| Transfer current | A | 870 | |||
| Power frequency withstand voltage phase-eareth, phase-phase/isolating distance | KV | 42/48 | |||
| Lightning impulse withstand voltage phase-eareth, phase-phase/isolating distance | KV | 75/85 | |||
| Rated short circuit breaking current (current-limiting fuse) Rated short circuit breaking current | KA | 31.5 | |||
| Transformer unit | Rated voltage | KV | 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 | ||
| Rated current of main circuit | A | 50-4000 | |||
| Branch current | A | 5-800 | |||
| Enclosure | Protection level (common product) | HV room IP33; Transformer room IP23; LV room IP33 | |||
| Noise level | dB | ≤ 50 | |||
lnstallation size diagram
Ordering instruction
Users need to provide the following information when ordering:
● Model, capacity, quantity, color and size requirements and enclosure materials;
● Model, performance, connection group, tapping range and impedance requirements of transformer;
● High and low voltage side primary wiring solution, components model, specifications and requirements;Transformer oil (#25, #45, high ignition point oil)
● Network configuration requirements of intelligent power management network or property management for box substation;
● Service environment requirements.
Construction drawings
