Tailored advanced oil immersed neutral grounding transformer 35kV 36kV 44kV
Key attributes
| Brand | Vziman |
| Model NO. | Tailored advanced oil immersed neutral grounding transformer 35kV 36kV 44kV |
| Rated frequency | 50Hz |
| Rated capacity | 1250kVA |
| Series | SCB |
Product descriptions from the supplier
Description
Neutral grounding transformer Product Description
The neutral grounding transformer, especially the oil immersed grounding transformer variant, supplies a stable artificial loaded neutral point for ungrounded systems.Its neutral point connects to arc suppression coils or resistors for grounding, limiting fault current effectively. The oil immersed grounding transformer ensures stable operation via superior liquid insulation and heat dissipation.Equipped with a continuous rated capacity secondary winding, the neutral grounding transformer can also serve as a station power source, achieving dual functions of grounding and power supply.Suitable for 35kV and below power systems like substations and user distribution stations, the oil immersed grounding transformer is a reliable choice for medium and low-voltage grid grounding protection.
Oil immersed grounding transformer Product Features
- Customized Performance Matching：This oil immersed grounding transformer is a specialized neutral grounding transformer engineered to meet tailored power needs. It can be customized for voltage levels (35kV and below) and capacity specifications, perfectly adapting to the grounding protection requirements of substations, user distribution stations and other industrial power systems.
- Superior Insulation & Heat Dissipation：As an oil immersed grounding transformer, it adopts high-quality insulating oil and sealed tank structure, which has better insulation performance and heat dissipation efficiency than dry-type alternatives. This ensures the neutral grounding transformer operates stably even under long-term grounding fault conditions, with low temperature rise and long service life.
- Dual-Function Design：The neutral grounding transformer is equipped with a continuous rated capacity secondary winding, which can serve as a station power source while providing artificial neutral point grounding. The oil immersed grounding transformer’s robust structure supports this dual-function operation, reducing equipment investment and installation space for users.
Neutral grounding transformer Product Parameters
10kV series oil immersed grounding transformer technical parameters table
| Type | Connection group | Tapping range | Zero-sequence Reactance (Ω / phase) |
Mounting hole (transverse × vertical)4×18 |
Body size(length × width×height)mm | Body weight (kg) |
| DKS-150/10.5 | Zn | 10.5 | 19 | 550×590 | 1150×650×896 | 500 |
| DKS-200/10.5 | Zn | 10.5 | 14 | 550×640 | 1150×700×1113 | 760 |
| DKS-200/10.5-100/0.4 | Znyn11 | 10.5±2×2.5%/0.4 | 14 | 550×640 | 1150×700×1113 | 820 |
| DKS-315/10.5 | Zn | 10.5 | 9 | 550×690 | 1230×750×1176 | 910 |
| DKS-330/10.5-150/0.4 | Znyn11 | 10.5±2×2.5%/0.4 | 9 | 550×690 | 1230×750×1206 | 950 |
| DKS-400/10.5 | Zn | 10.5 | 6 | 550×690 | 1250×750×1181 | 1050 |
| DKS-400/10.5-100/0.4 | Znyn11 | 10.5±2×2.5%/0.4 | 6 | 550×690 | 1250×750×1211 | 1100 |
| DKS-500/10.5 | Zn | 10.5 | 6 | 550×690 | 1300×750×1181 | 1100 |
| DKS-500/10.5-100/0.4 | Znyn11 | 10.5±2×2.5%/0.4 | 6 | 550×690 | 1300×750×1250 | 1150 |
| DKS-630/10.5 | Zn | 10.5 | 4 | 550×790 | 1350×850×1250 | 1350 |
| DKS-630/10.5-200/0.4 | Znyn11 | 10.5±2×2.5%/0.4 | 4 | 550×790 | 1350×850×1286 | 1400 |
| DKS-800/10.5 | Zn | 10.5 | 4 | 550×790 | 1400×850×1295 | 1460 |
| DKS-800/10.5-100/0.4 | Znyn11 | 10.5±2×2.5%/0.4 | 4 | 550×790 | 1400×850×1304 | 1500 |
| DKS-1000/10.5 | Zn | 10.5 | 3 | 550×790 | 1450×850×1408 | 1820 |
| DKS-1000/10.5-100/0.4 | Znyn11 | 10.5±2×2.5%/0.4 | 3 | 550×790 | 1450×850×1450 | 1900 |
Technical parameter table of 35kV series oil-immersed grounding transformer
| Type | Connection group | Lap range | Zero-sequence Reactance (Ω / phase) |
Mounting hole (transverse × vertical)4×18 |
Body size(length × width×height)mm | Body weight (kg) |
| DKS-400/10.5 | Znyn11 | 35±2×2.5% | 144 | 1070×1080 | 2100×1200×1465 | 2000 |
| DKS-500/10.5 | Znyn11 | 35±2×2.5% | 123 | 1070×1080 | 2140×1200×1505 | 2100 |
| DKS-630/35 | Zn | 35±2×2.5% | 119 | 1070×1080 | 2220×1200×1588 | 2520 |
| DKS-630/35-250/0.4 | Zn | 35±2×2.5%/0.4 | 89 | 1070×1080 | 2240×1200×1680 | 2700 |
| DKS-700/35 | Znyn11 | 35±2×2.5% | 98 | 1070×1080 | 2240×1200×1635 | 2600 |
| DKS-700/35-315/0.4 | Znyn11 | 35±2×2.5%/0.4 | 97 | 1070×1080 | 2350×1200×1555 | 3050 |
| DKS-800/35-250/0.4 | Znyn11 | 35±2×2.5%/0.4 | 85 | 1070×1080 | 2240×1200×1805 | 2900 |
| DKS-1000/35-250/0.4 | Znyn11 | 35±2×2.5%/0.4 | 80 | 1070×1080 | 2250×1200×1860 | 3050 |
| DKS-1000/35-315/0.4 | Znyn11 | 35±2×2.5%/0.4 | 75 | 1070×1080 | 2420×1200×1795 | 3350 |
| DKS-1250/35-250/0.4 | Znyn11 | 35±2×2.5%/0.4 | 82 | 1070×1080 | 2300×1200×1935 | 3500 |
| DKS-1700/35-250/0.4 | Znyn11 | 35±2×2.5%/0.4 | 68 | 1070×1080 | 2520×1200×1945 | 4150 |
| DKS-2000/35 | Zn | 35±2×2.5% | 54 | 1070×1080 | 2530×1200×1945 | 4450 |
| DKS-2400/35-400/0.4 | Znyn11 | 35±2×2.5%/0.4 | 44 | 1070×1130 | 2600×1250×2007 | 5000 |
| DKS-2500/35 | Zn | 35±2×2.5% | 40 | 1070×1130 | 2600×1250×2007 | 5100 |
Neutral grounding transformer Application Conditions
- Voltage System Compatibility：The neutral grounding transformer, especially the oil immersed grounding transformer variant, is applicable to 35kV and below power systems such as substations and user distribution stations. It is designed to match the voltage level of ungrounded systems, providing a stable artificial neutral point for arc suppression coil or resistor grounding.
- Installation Environment Requirements：The oil immersed grounding transformer (a typical type of neutral grounding transformer) is suitable for both indoor and outdoor installations. It can operate reliably in environments with ambient temperatures ranging from -25℃ to 55℃ and relative humidity ≤95%, but it needs to avoid long-term exposure to corrosive gases or heavy dust that may damage the oil insulation system.
- Grounding Mode Matching：The neutral grounding transformer is dedicated to ungrounded or high-impedance grounded systems. The oil immersed grounding transformer is particularly suitable for scenarios requiring large fault current tolerance and good heat dissipation, as its liquid insulation structure can effectively reduce temperature rise during grounding fault handling.
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