Transformer Insulation Paper & Pressboard

electical insulation spacers
insulation spacer for transformer
transformer insulation spacer
electical insulation spacers
insulation spacer for transformer
transformer insulation spacer

Electrical Insulation Spacer for Transformer Insulation Material

Product Description:

Electrical Insulation spacers and pressboard strips are ideal for use in liquid-immersed power transformers, distribution transformers, and traction transformers. 


Type: Insulation spacers

Material:  100% electrical-grade pulp

Heat-resistance: A Class 105℃

Size and Shape: Can be customized


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Quick Answers for You

Quick answers to your pressing questions.

Q: What thickness, width, length, and tolerance can you supply?

A: Chengrui Insulation can supply standard sizes and also customize dimensions according to customer drawings or application requirements. The tolerance depends on material type, thickness, and processing method. Before quotation, customers should confirm thickness, width, length, quantity, roll weight, or drawing dimensions.

Q: Can you process according to drawings, such as strips, punching, CNC machining, molded parts, and oil duct spacers?

A: Chengrui Insulation can provide custom processing according to drawings, not only raw insulation materials. Common processing includes strip cutting, punching, chamfering, slotting, CNC machining, and components etc.

Q: Is this material suitable for my transformer type, oil-immersed or dry-type?

A: Chengrui Insulation can offer insulation materials both for oil-immersed transformers and dry-type transformers. Common materials for oil-immersed transformers include electrical kraft paper, diamond dotted paper, crepe paper, insulation pressboard, pressboard strips, oil duct spacers, insulation cylinders, and laminated wood. They are widely used for winding insulation, interlayer insulation, end insulation, oil ducts, and support structures. For dry-type transformers requiring higher thermal performance, we normally recommend NMN, NHN, AMA, polyimide film, epoxy fiberglass sheets, etc

Q: Are you a trader or manufacturer?

A: Chengrui combines our own manufacturing capabilities (flexible laminates, insulation sleeving etc) with a qualified partner production network. This allows us to supply a broader range of electrical insulation materials while maintaining specification control, quality inspection and technical support.

Q: What technical documents can you provide?

A: Depending on the material, we can provide ISO, TDS, RoHS, REACH, SGS reports and relevant IEC or UL information for technical evaluation and supplier approval.

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