35kV On-Load Tap-Changing Transformer
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
35kV On-Load Tap-Changing Transformers
Compact Assembled Box Electrical Substation
Innovative Product Integrating Advantages of American and European Box-Type Substations
- Product type
- 35kV On-Load Tap-Changing Transformer
- Rated capacity
- 50-10,000 kVA
- Voltage class
- 10 kV / 20 kV / 35 kV
- Cooling
- ONAN / ONAF
- Tap range
- Off-circuit or on-load, project-specific
- Winding
- Copper or aluminium (project-specific)
Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.
- Routine test report with the unit
- English GA drawing and O&M manual
- Copper or aluminium winding options
- 50 Hz / 60 Hz and harsh-site options
Product overview
Innovative Product Integrating Advantages of American and European Box-Type Substations
This product integrates the advantages of American box-type substations (compact structure, small size) and European box-type substations (comprehensive high-voltage protection functions). It not only has the compactness of American box-type substations but also possesses the high-voltage protection advantages of European box-type substations, making it a new type of prefabricated substation that combines the strengths of the two types of box-type substations.
Flexible Usage Conditions for Multi-Scenario Application
With a width of only 1350mm, the product can be embedded in the green belts in the middle of urban roads without affecting the normal passage of vehicles and pedestrians. Moreover, the high-voltage side adopts a ring main unit with comprehensive protection functions, enabling it to be widely used in various places such as residential communities, wharves, and temporary power supply for construction sites.
Product Design with Multi-Dimensional Advantages
The box-type substation has a small size, covering an area of approximately 1/3 of that of European box-type substations, which saves civil construction costs.
Design features
What the design is built around
Low-loss magnetic core
Cold-rolled grain-oriented silicon steel and a stepped core reduce no-load loss and audible noise.
Sealed tank construction
Welded tank, quality-gasketed cover and pressure-tested seals reduce oil leakage risk in outdoor duty.
Thermal margin for hot climates
Cooling surfaces and oil volume are selected for high ambient temperature and cyclic loading.
System compatibility
MV terminals, cable boxes and LV bushings are matched to the switchgear and protection scheme.
Typical specification
Specifications to confirm on the datasheet
| Product type | 35kV On-Load Tap-Changing Transformer |
|---|---|
| Rated capacity | 50-10,000 kVA |
| Voltage class | 10 kV / 20 kV / 35 kV |
| Cooling | ONAN / ONAF |
| Tap range | Off-circuit or on-load, project-specific |
| Winding | Copper or aluminium (project-specific) |
| Standards | GB 1094.1, GB/T 6451, IEC 60076 |
| Testing | Routine tests plus type and special tests on request |
The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.
Typical applications
- 35 kV industrial main substations
- Utility distribution with voltage regulation
- Steel, cement and chemical plants
- Renewable-energy step-up
- Mining and oil-gas facilities
Confirm before ordering
- Rated capacity, voltage ratio and tap range
- Impedance, fault level and parallel operation
- Ambient temperature, altitude and enclosure
- Winding material, losses and efficiency class
- Terminations, protection and monitoring
- Tests, inspection, packing and shipping limits
Buyer questions
FAQ for Compact Assembled Box Electrical Substation
What is Compact Assembled Box Electrical Substation best used for?
What is the typical lead time for Compact Assembled Box Electrical Substation?
Which standards and tests are supplied?
Can the transformer be customised for 60 Hz or a hot climate?
How do I choose between copper and aluminium windings?
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