Triple Frequency Test Instrument - Yangzhou Darui - Yangzhou Darui Electric Co., Ltd.

Triple Frequency Test Instrument - Yangzhou Darui

Published: 2020-07-17 14:43:53

Category: Triple Frequency Generator

Product Description

Triple Frequency Test Instrument

Overview:

The triple frequency test instrument, also known as the triple frequency test transformer,. is used for testing power transformers, voltage transformers, and other test objects. In addition to performing external power frequency high voltage tests on the main insulation of fully insulated transformers, it is also necessary to conduct induced high voltage tests on the longitudinal insulation of transformers and the main insulation of semi-insulated transformers using a frequency multiplier transformer. It is an important test to verify whether the insulation of the product meets national standards.

Introduction to the Triple Frequency Test Instrument:

According to national test standards, the induced test voltage for power transformers and voltage transformers is generally considered to be about 2-3 times the maximum working phase voltage. As is well known, when a transformer operates at rated frequency and rated voltage, the iron core is close to saturation. If a test voltage higher than the rated voltage is applied across the windings of the transformer under test using a power frequency source, the no-load excitation current will increase sharply to an unacceptable level. From the relationship of induced electromotive force, it can be seen that in order to apply a test voltage higher than the rated voltage without saturating the iron core, the method of increasing the power frequency can be adopted, and a frequency multiplier power generator must be used.

[Operating Environment]

1. Power supply conditions: Three-phase 380V/50Hz

2. Ambient temperature: -25°C to 55°C

3. Altitude: not exceeding 4000 meters

[Technical Parameters]

1. Working power supply: Three-phase AC 380V ±10% 50Hz

2. Rated capacity: 3KVA-30KVA (optional)

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Product Details

Triple Frequency Test Instrument - Yangzhou Darui