PRODUCTTransformer cores
Oil-Immersed Transformer Cores
CRGO cores for oil-immersed transformers, with core geometry and included hardware coordinated with the winding and tank design.
01 / Specification
Product specification
- Application
- Oil-immersed distribution and power transformers
- Core configurations
- Single-phase, three-limb or five-limb, to drawing
- Material
- Specified CRGO / GOES grade and thickness
- Joint definition
- Lamination sequence, lap geometry and assembly condition
- Cut-edge control
- Burr height <0.02 mm
- Assembled stack
- Stacking factor >97%
Burr height and stacking factor are manufacturing controls. Order acceptance is agreed for the specified material, coating, stack condition, drawing tolerances and measurement method; these figures do not guarantee transformer loss or efficiency.
02 / Supply
Core delivery formats
Delivery format
Cut laminations
Identified cut pieces for factories that build the joint, stack and clamp the core in-house.
Delivery: pieces grouped by the lamination schedule.
Delivery format
Pre-stacked packets
Counted lamination packets arranged in their stacking sequence for core assembly at your factory.
Delivery: identified packets with orientation and sequence retained.
Delivery format
Assembled core
The stacked magnetic circuit with the specified clamping structure, prepared for winding integration.
Delivery: core assembly with the specified accessories and handling provisions.
Supply scope
Core geometry for active-part integration
Window dimensions, core supports and clamping interfaces are coordinated with the winding and tank design. Defined lifting provisions and transport dimensions support handling through your assembly process.
- Magnetic-core definition
- Confirm the released drawing, material, limb and yoke geometry, window dimensions, joint schedule and delivery condition.
- Hardware included by agreement
- List supports, clamps, insulation and grounding parts, lifting provisions and transport restraint. Confirm their interfaces with the winding and tank design and which items the order includes.
- Outside the core supply scope
- Windings, tank, oil and final transformer assembly remain separate from this core order.
Suitability of the specified insulation, binding and surface-protection materials for the intended insulating liquid and drying process requires technical confirmation. Agree the inspection and transport conditions for the actual supplied format.
Review the core assembly interfaces and inspection scope before release.
Before ordering
Does core supply include the active part or oil filling?
No. This page covers the magnetic core and the hardware explicitly included in its order. Windings, tank, oil and final transformer assembly are separate from this supply scope.
RFQTechnical review
Send your core drawing
Include the drawing revision, material specification, quantity and destination.