Temperature Rise Test for Electric Power Transformers

I. Overview

Transformer's direct resistance is a mandatory test item during the manufacturing process, including semi-finished and finished product shipment, installation, handover testing, and preventive tests by the power department. It effectively detects manufacturing defects such as material selection, welding, loose connections, broken wires, and other issues in the transformer coils, as well as potential hazards that may arise after operation. To meet the need for rapid direct resistance measurement of transformers, the instrument employs new power source technology, featuring compact size, lightweight, and high output current. The entire unit is controlled by a microcontroller, automatically completing self-checks, data processing, and display functions, with automatic discharge and discharge indication features. The instrument boasts high testing accuracy, easy operation, and allows for the rapid measurement of transformer direct resistance.

ED0204B-20Type Transformer Temperature Rise Direct Resistance TesterOutput Voltage40V, 20A current, designed specifically for three-core five-column largeTransformer Temperature RisePrecision Designed, Quick Charging and Measurement, Meeting the Time Requirements for Transformer Temperature Rise Tests, Dual-channel Measurement, Real-time Sampling, and Printing Output, Making Temperature Rise Tests No Longer a Challenge.

Safety Measures

1、 Always read this manual thoroughly before using the instrument.

2、 Operators of the instrument should possess general knowledge of the use of electrical equipment or instruments.

3、 This instrument should be used in environments free from rain, corrosive gases, excessive dust, high temperatures, and direct sunlight.

4、 Instruments should be avoided from剧烈 vibrations.

5、 Maintenance, care, and adjustment of the instrument should be performed by professionals.

6、 Always wait for the discharge alarm to stop before turning off the power and removing the test wires.

7、 Always switch to the next position after the discharge indicator alarm sound stops when measuring unloaded voltage regulators.

8、 During the testing process, the movement of the test fixture and power lines is prohibited.

III. Performance Features

1、 The instrument outputs high current and voltage.

2、 Dual-channel measurement, measuring two resistance values simultaneously.

3、 Equipped with a comprehensive protection circuit, it boasts high reliability.

4、 Horizontal structure for ease of on-site operation in transformer factories.

5、 Sound-activated alarm with clear discharge indication, reducing false operation.