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NR1420 series internal water cooling generator DC high voltage generator

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Product patent

Product description

Product Description

　　Internal water-cooled generator DC high-voltage generator is developed for the leakage current and DC high-voltage test of internal water-cooled generator. The instrument is specially designed with various interference current compensation circuits, which can completely eliminate the influence of stray current and the polarization potential interference of the water collecting pipe during the test, and can accurately measure the leakage current of the water-cooled generator winding. For generators in power plants, DC tests can be sensitive and effective to find the end defects and gap defects of the stator windings.

Main Feature

　　◆ Large voltage feedback is used to greatly improve voltage stability. At the same time, the inverter frequency is increased, the volume and weight of the instrument and the pressure doubler are reduced, and it is more convenient to carry;

　　◆ Adopt intermediate frequency voltage doubler circuit, take the lead in applying the latest PWM pulse width modulation technology and high-power IGBT devices, and according to the electromagnetic compatibility theory, adopt special shielding, isolation and grounding measures, so that the instrument is high-quality, portable, and can withstand Rated voltage discharge without damage;

　　◆ The measurement data is displayed on a large LCD dot matrix screen;

　　◆ Using high-quality components from the United States and Japan and international chassis made in Germany, it has strong anti-interference ability, beautiful and practical;

　　◆ The voltage doubler is developed with German technology, and the intermediate frequency transformer is specially designed by relevant experts, with a small size and large capacity.

Technical Parameters

Specifications/Technical Parameters	60kV/80mA	80kV/120mA	90kV/200mA
Output voltage (kV)	60	80	90
Output public current (mA)	80	120	200
Output power (kW)	4.8	9.6	18
Control box weight (kg)	13	16	20
High pressure box weight (kg)	16	20	26
Voltage measurement	1.5%(Full scale) ±1 word
Total current measurement	1.0%(Full scale) ±1 word
Leakage AC measurement	±2.0%
Input power	Three-phaseAC380V