Transformer Characteristic Comprehensive Tester - Yangzhou DARUI

Transformer Characteristic Comprehensive Tester - Yangzhou DARUI

Published: 2020-07-31 14:59:22

Category: CT/PT Characteristic Tester

Product Description

Three-times Frequency Induction Voltage Generator Device

Complete products including control equipment and chassis can be provided as a package. This generator is one of the essential equipment for performing multiple-frequency induction high-voltage tests on small-capacity power transformers and cascade high-voltage potential transformers in power systems, power plants, substations, and power supply and distribution networks. It can also be used for multiple-frequency and multiple-voltage tests on various low-voltage electronic and instrument power transformers, inductor coils, and electrical coils. Additionally, it can serve as a multiple-frequency power source with a power rating not exceeding 1 kilowatt for power supply or testing of certain special electrical equipment.

This product is a static frequency conversion device, with low noise and small size, and can completely replace traditional frequency conversion units in high-voltage systems.

The primary sides of three single-phase transformers are connected in a star configuration, and the secondary sides are connected in an open delta. When a symmetrical three-phase sinusoidal power supply is applied to the primary side, and the voltage is raised to saturate the iron core magnetic circuit, the content of the third harmonic component in the magnetic flux increases, correspondingly increasing the third harmonic voltage induced in the iron core coils.

This 150 Hz (three times the power frequency) induced voltage output from the secondary side of the open delta generator serves as the three-times frequency test power supply voltage.

When the three-times frequency generator is loaded with a load (e.g., YHJC—220 high-voltage cascade potential transformer), its current changes from inductive to capacitive. Due to the low power factor, the efficiency of the generator is relatively low, generally only about 20%. Therefore, a reactor can be connected to a certain idle winding of the test object for current compensation to improve the power factor of the entire test circuit.

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Product Details

Transformer Characteristic Comprehensive Tester - Yangzhou DARUI