Products Description
Our oil immersed grounding transformer uses a high-permeability cold-rolled oriented silicon-steel core and oxygen-free copper flat-wire windings. Its oil-tank construction changes with rated capacity to support heat dissipation and service access.
Technical Principle
The transformer creates an artificial neutral point for a system that otherwise has no accessible neutral. During a ground fault, zero-sequence current flows through the grounding path so the connected resistor or arc-suppression coil can limit or compensate fault current.
Product Features
The oil immersed grounding transformer provides the neutral point required for grounding protection in a non-effectively grounded network. The oriented silicon-steel core supports low-loss magnetic performance. Copper flat-wire windings provide a robust current path for the specified duty. Capacity-based tank structures support cooling and maintenance access.
Operating Conditions
Install the product in a clean, ventilated location without corrosive gas, conductive dust, water ingress, severe vibration, or strong impact. Provide reliable protective grounding, maintain the required electrical clearances, and use the rated auxiliary power supply. Confirm ambient temperature, humidity, altitude, enclosure protection, cable routing, and communication conditions before production and installation.
Product Parameters
|
Parameter |
Details |
|
Series / voltage class |
DKS series / 33 kV; applied to 35 kV systems |
|
Model example |
DKS22-2500/33-500/0.4 |
|
Energy-performance codes |
DKS22: Level 1; DKS20: Level 2; DKS13: Level 3 |
|
Core material |
High-permeability cold-rolled oriented silicon steel |
|
Winding conductor |
Oxygen-free copper flat wire |
|
Oil tank at ≤6300 kVA |
Barrel structure with fixed radiators |
|
Oil tank at ≥8000 kVA |
Bell-cover structure with removable radiators |
|
Applicable standards |
IEC 60076 series; IEEE C57.12.00/C57.12.90; BS/DIN EN 60076; JIS C4304 |
Product Advantages
- The oil immersed grounding transformer provides the neutral point required for grounding protection in a non-effectively grounded network.
- The oriented silicon-steel core supports low-loss magnetic performance.
- Copper flat-wire windings provide a robust current path for the specified duty.
- Capacity-based tank structures support cooling and maintenance access.
Main Applications
The oil immersed grounding transformer is used for 35 kV substations that require an artificial neutral point for grounding equipment.
It can be matched with a neutral grounding resistor cabinet or an arc-suppression arrangement.
It suits utility, industrial, renewable-energy, and infrastructure distribution networks.
Components
|
Part |
Function |
|
Magnetic core |
Provides the magnetic circuit with oriented silicon-steel laminations. |
|
Copper windings |
Form the specified grounding-transformer winding arrangement. |
|
Insulating oil and tank |
Provide insulation, cooling, and mechanical protection. |
|
Radiator assembly |
Dissipates heat with a capacity-matched construction. |
FAQ
Q: What information is needed for model selection?
A: Confirm the system voltage, required capacity, connection arrangement, secondary load, and energy-performance level.
Q: What should be checked before installation?
A: Verify the foundation, clearances, oil containment, ambient conditions, and cable-entry direction.
Q: How can the device or system be integrated?
A: The transformer can be coordinated with a resistor cabinet, arc-suppression coil, current transformer, and station protection scheme.
Q: Which options should be confirmed before production?
A: Confirm tap requirements, terminal arrangement, accessories, enclosure details, and the applicable standard set.
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