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 |
| 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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