Paper covered wire
  • Paper covered wire

Paper covered wire

Paper wrapped winding wire is copper or aluminum flat wire as the core, can be composed of single or multiple wires, using NOMEX paper, telephone paper, cable paper, 500KV transformer turn insulation paper (high density), heat resistant insulation paper as insulation, the ideal winding material for oil-immersed transformers.

Main products: all kinds of insulating paper wrapped wire, combined wire, different combinations of combined wire, vertical wound paper wrapped wire and combined wire;

Paper coated single wire is mostly used in the distribution of low voltage level, there are also 110KV and above oil transformer and combined wire, transposition wire is used together, combined wire is composed of several paper coated single wire, paper core wrapped around the public insulation layer, mostly used for 110KV and above oil transformer. Compared with a single paper-covered copper wire, it can improve the integrity and mechanical strength of the coil when the insulation strength and conductor section are the same. Reducing the volume of the transformer can effectively improve the heat dissipation performance of the coil. The paper covered wire has good voltage resistance in transformer oil, and the hardened wire has high mechanical strength.

Main technical index

Conductor size

a:0.80-5.60 mm

Insulation thickness

0.30-4.95 mm

b:2.00-16.000 mm

Number of layers of wrapping paper

2-33

Electrical resistivity

≤0.017241

Number of combined wires

≤6 The root

Resilience

≤5°

Elongation

Semi-hard state

25%

Semi-hard - yield strength

90-270

Soft state

0.80≤a≤2.00

30%

Yield strength deviation of the same batch


≤5%

2.00<a≤4.00

32%



4.00<a

35%


Product category

Model number

Name

Z

Cable paper or telephone paper wrapped in round copper wire

ZA

500kV transformer turn insulation paper-covered round copper wire

ZB

Cable paper or telephone paper covered with copper flat wire

ZAB

500kV transformer turn insulation paper-covered copper flat wire

NZB

Nomex paper covered copper flat wire

ZRB

Melamine heat resistant paper covered copper flat wire

ZFB

Polyester nonwoven wrapped copper flat wire



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