NHN insulation paper
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  • NHN insulation paper

NHN insulation paper

NHN insulation paper is a soft composite material composed of a layer of polyimide film (H) and aramid paper (N)(DuPont paper) on both sides, with a heat resistance grade of H (180 ℃). It has good heat resistance, pressure resistance and strong mechanical properties. Make all kinds of rotating equipment (AC and DC motors, random coils and die coils, and even large turbogenerators) better heat insulation, better mechanical properties, higher safety, and longer service life, so it is widely used.

Product Description

NHN insulation paper introduces performance application series problems

NHN insulation paper is a soft composite material composed of a layer of polyimide film (H) and aramid paper (N)(DuPont paper) on both sides, with a heat resistance grade of H (180 ℃). It has good heat resistance, pressure resistance and strong mechanical properties. Make all kinds of rotating equipment (AC and DC motors, random coils and die coils, and even large turbogenerators) better heat insulation, better mechanical properties, higher safety, and longer service life, so it is widely used.

So what are the necessary factors for NHN insulation paper?

1. Combustion resistance: refers to the ability of NHN insulation paper to resist combustion when contacting the flame or to prevent continued combustion when leaving the flame. With the increasingly widespread application of insulating materials, the requirements for their flame retardant properties are getting higher and higher. People use various means to improve and improve the flame resistance of insulating materials. The greater the combustion resistance, the better the safety.

2, tensile strength: when the paper fiber is subjected to tensile load, it has a large stress that can withstand without being broken. Tensile strength and tear resistance are the large tensile stress that the specimen can withstand in the tensile test. It is a representative test method for the mechanical properties of NHN insulation paper.

3, arc resistance: under the specified test conditions, NHN insulation paper resistance along the surface of the arc effect of the ability. The arc resistance of NHN insulating paper is determined by the time required to form a conductive layer on the surface of NHN insulating paper due to the high voltage arc effect between the two electrodes. The higher the time value, the better the arc resistance. Use it to extinguish the arc, isolate the arc, or limit the arc to a certain range.

4. Sealing degree: the sealing and isolation of oil and water quality is better.

NHN insulating paper has the characteristics of low density, low friction coefficient, low elastic modulus, and good corrosion resistance. It is used to replace the general structural parts of the driver, support, buffer, installation, and protection made of metal.

NHN insulation paper as an insulation material for cables, coils and other electrical equipment can greatly improve the design of transformers, reduce electrical losses, improve standby capacity, improve safety and reliability, high temperature insulation paper, reduce the amount of steel core and conductors, and reduce costs. Insulation paper can also improve the performance of liquid-filled transformers, NHN insulation paper, reduce the number of maintenance. In addition, the versatility and singleness of insulating paper can help reduce inventory and costs.

So how to judge the quality of NHN insulation paper with naked eyes? For example: no delamination, no foaming, no glue flow, see the product description, insulation resistance, leakage current and other insulation characteristic parameters. When the impurity and moisture content in the insulating paper is high, its conductivity will increase, resulting in an increase in the leakage current value.

The quality of insulating paper on the market is uneven. The main thing is to require manufacturers to provide a copy of whether the recent purchase of raw materials accounts for a large proportion of materials. If conditions permit, it is still recommended for on-site inspection.

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Keywords: NHN insulation paper

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