10KVA/150KV AC/DC Test Transformer - Yangzhou Dary - Yangzhou Darui Electric Co., Ltd.

10KVA/150KV AC/DC Test Transformer - Yangzhou Dary

Published: 2020-08-10 08:48:48

Category: Power Frequency Withstand Voltage Device

Product Description

10KVA/150KV AC/DC Test Transformer

Dary Electric recommends

Precautions

(1) Test personnel should divide the work and clarify mutual methods. There should be a dedicated person to monitor site safety and observe the test object's condition.

(2) The test object should be cleaned and dried to avoid damage and test errors.

(3) For large-scale tests, a no-load test should generally be conducted first. That is, without connecting the test object, raise the voltage to the test voltage, calibrate various meters, and adjust gaps.

(4) The voltage rise speed should not be too fast, and sudden pressurization must be prevented. For example, sudden closing when the voltage regulator is not at zero position, and sudden power cut should also be avoided. Generally, the power should be cut off after the voltage regulator is lowered to zero.

(5) When the voltage rises to the test voltage, start timing. After 1 minute, quickly reduce to below 1/3 of the test voltage before cutting off the power.

(6) During the voltage rise or withstand voltage test, if any of the following abnormal conditions are found, immediately reduce the voltage, cut off the power, stop the test, and investigate the cause: ① The voltmeter pointer swings greatly; ② Insulation burning or smoking is found; ③ Abnormal sounds inside the test object.

(7) Before and after the withstand voltage test, measure the insulation resistance and check the insulation condition.

Product Structure
The light high-voltage test transformer adopts a single-frame core structure. The primary winding is wound on the iron core, and the high-voltage winding is outside. This coaxial arrangement reduces leakage flux, thereby increasing the coupling between windings. The shell of the product is made into an octagonal structure that fits well with the core, making the overall appearance beautiful and elegant.

Overview:

The light AC/DC high-voltage test transformer is produced based on the Ministry of Machinery and Electronics' "Test Transformer" standard, with extensive improvements on the original similar products. It is a new type of product produced after improvements on the (G) series test transformer according to the national standard "ZBK-41006-89". This series of products has the characteristics of small size, light weight, compact structure, complete functions, strong universality, and convenient use. It is especially suitable for insulation strength tests under power frequency or DC high voltage for various high-voltage electrical equipment, electrical components, and insulating materials in power systems, industrial and mining enterprises, and scientific research departments. It is an indispensable important equipment in high-voltage testing.

Working Principle:

The light high-voltage test transformer is a single-phase transformer with connection group label I.I. It uses a two-frequency 220V (380V for above 10KVA) power supply connected to the series operation box (table). Through the autotransformer voltage regulator inside the operation box (external for above 50KVA), the voltage is adjusted to 0-200V (or 0-400V) and output to the primary winding of the test transformer. According to the principle of electromagnetic induction, the required high voltage for testing can be obtained on the high-voltage winding of the test transformer.

Note: The above information and technical parameters are compiled and released by Yangzhou Dary Electric Co., Ltd.

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Product Details

10KVA/150KV AC/DC Test Transformer - Yangzhou Dary