Yawei compact MV substations are designed and manufactured for standard and specific customer requirements that are widely used in areas where underground power reticulation is required, such as in residential, commercial and industrial developments. The fully enclosed transformer, HV and LV connections or switchgear are all fully assembled and tested in the factory prior to shipping to site. The standard design methodologies have been subject to extensive design review and subsequent in field review.
Many standard and customised compact MV substation arrangements are available. All configurations are fully rated in their enclosures, which include:
- In line kiosk (HV, transformer, LV) with oil containment
- In line kiosk (HV, transformer, LV) without oil containment
- Pad mounted style (HV and LV on one side of transformer) with oil containment
- Pad mounted style (HV and LV on one side of transformer) without oil containment
Any other special request that a customer may have Key features and benefits include:
- Compliance with Energy Performance Standards
- Robust build with integrated quality control and proven performance
- Proven supply chain integration
- Qualified weld processes
- Robust construction for transport to the most inaccessible locations
- Excellent corrosion protection systems, with option of galvanised tanks and marine grade aluminium or 3CR12 stainless steel cubicle for rugged long life protection
- Hot dip galvanized mild steel or concrete base, fluid containment available up to 110%
- High fire point environmental fluid if beneficial
1 Ambient temperature: -25ºC~+40ºC
2 Altitude: less than1000m
3 Relative humidity
Daily average less than 95% Average value of water vapor pressure less than 2.2kpa
Monthly average less than 90% Average value of water vapor pressure less than 1.8kpa
4 Seismic intensity:less than magnitude 8
5 Outside wind speed less than 35m/s
6 Apply to the places have no fire,no explosion danger and no chemical corrosion 
| High voltage compartment | item | unit | Parameter | ||
| Rated frequency | Hz | 50 /60 Hz | |||
| Rated Voltage | KV | 3.3KV , 6.0KV, 6.6KV | 10KV 11KV 13.8KV 15KV 20KV 22kv | 30KV 33KV 35KV 36KV | |
| Max service voltage | KV | 7.2 KV | 12KV , 24KV | 40.5KV | |
| Rated current | A | 400, 630, 1000, 1250 ,1600, 2000, 2150,...etc | |||
| Transfer current | A | 1200 -3150 A | |||
| 1MIN Power frequency withstand voltage , earth -phase | KV | 42/48, 85/95 | |||
| 1MIN Power frequency withstand voltage , phase/fracture | |||||
| BIL | KV | 75/85, 170/185 | |||
| Rated short circuit breaking current | KA | 20, 31.5 | |||
| Transformer compartment | Rated voltage | KV | 3.3KV , 6.0KV, 6.6KV | 10KV 11KV 13.8KV 15KV 20KV 22kv | 30KV 33KV 35KV 36KV |
| Rated power capacity | KVA | 200 KVA Upto 2.5 MVA | |||
| Tapping range | % | ±2 X 2.5% , ±5% | |||
| Vector group | Yyn0, Dyn11 | ||||
| Short-circuit Impedance | % | 4.0 , 4.2, 4.5, 6, 8 | |||
| Low voltage compartment | rated voltage | V | 220, 380, 400, 415, 433, 440, 660, 690,800 | ||
| main circuit rated current | A | 50 -4000 | |||
| branch current | A | 5-800 | |||
| Enclosure | protection level | ||||
| HV compartment | IP33, IP65.. | ||||
| LV compartment | IP33 | ||||
| Transformer compartment | IP23 | ||||
| Noise level | dB | ≤ 50 | |||
Jiangxi Yawei Electrical Co.,Ltd. professional custom made package substations for all over the world.This substation has 3 main compartments. There are transformer compartment, high/medium voltage switchgear compartment and low voltage switchgear compartment.HV & LV compartments are with completed function.
1. H.V.compartment has various of power supply methods when testing power supply in 1 time, it also can be installed with H.V.testing appliances to reach the demand of H.V.testing.
2.The transformer compartment can be choosed S7 ,S9,S11 or other low loss oil immersed transformer ,or dry transformer. The transformer compartment has automatic start wind cooling systems and lighting systems.
3.Low voltage compartment can be made according to users' need , it adopts fixed or assembled structure to be electrical power supply system,it has many function like light distribution ,power distribution, reactive power ,electrical power testing..etc to improve the power distribution quality and satisfy the user.