JIS C2550-4 Electromagnetic Steel Strip Test Method - Part 4: Method of Measuring Surface Insulation Resistance

Electromagnetic and Electrical Tests

JIS C2550-4 Electromagnetic Steel Strip Test Method - Part 4: Method of Measuring Surface Insulation Resistance

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of JIS C2550-4 testing. This standard covers the method of measuring the surface insulation resistance of electrical steel strips. This measurement method is applied to electrical steel strip insulated on one or both sides and is used for production control when an insulating coating is applied. It is suitable for the road.

JIS C2550-4 Electromagnetic Steel Strip Test Method - Part 4: Method of Measuring Surface Insulation Resistance

This measurement principle was based on the method originally described by Franklin, and the measurement was carried out on each coated surface.

The sample applies pressure between the substrate and the contactor assembly. The contactor assembly will be mounted inside the mounting block. Configured for axial movement with 10 vertically mounted coil springs. Usually these ten contact bars are arranged in two rows, but for convenience these ten contact bars can be arranged in one row. Each of them should be equipped and mounted with contact electrodes of metal rods, bronze or other suitable material (for example, stainless steel).

The current through the contactor electrodes will be measured with an accuracy of ± 2%. This measurement is made on low resistance (eg 0,2 Ω) resistors. Outside the junction of the stabilization circuit, a resistor is inserted between the power supply and the contactor electrodes and the resistance of this resistor is measured with a suitable voltmeter. It is possible by measuring the voltage drop.

EUROLAB assists manufacturers with JIS C2550-4 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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