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HZ-3100A 100A Rapid Transformer Winding Resistance Test Kit

I.Overview

Testing Significance

Transformer DC resistance testing is an essential procedure in transformer manufacturing for semi-finished and finished products, factory testing, installation, overhaul, after tap-changer changes, handover testing, and preventive testing in the power sector. This test helps verify:

• The welding quality of winding joints

• Whether the windings have inter-turn short circuits

• The contact condition of each tap-changer position

• Whether the actual tap-changer position matches the indicated position

• Whether leads are broken or multiple strands of wire are fractured

Product Overview

To meet the demand for rapid transformer DC resistance measurement, our company developed the HZ-3100A DC resistance tester. The instrument utilizes advanced power supply technology, offering the following characteristics:

• Compact size and light weight

• High output current

• Excellent repeatability

• Strong anti-interference capability

• Comprehensive protection functions

The entire unit is controlled by a high-speed single-chip microcomputer, providing a high degree of automation with automatic discharge and discharge alarm functions. The instrument features high test accuracy and simple operation, enabling rapid measurement of transformer DC resistance.

II.Main Technical index

Matters needing attention

1. After measuring the inductive load, the test line cannot be directly removed, so as not to endanger the safety of testers and equipment due to inductive discharge. The output terminal of this machine is equipped with a discharge circuit. After the instrument is reset, the inductance will discharge energy through the instrument. The test wire must be removed after the discharge instruction is completed.
2. For no-load tap-changing transformers, it is not allowed to switch the tap switch during the measurement process.
3. If the power supply is suddenly cut off during the measurement process, the machine will automatically start to discharge. Please do not disassemble the wiring immediately. Wait at least 30 seconds before disassembling the wiring.
4. During measurement, do not short-circuit the grounding of other untested windings, otherwise it will slow down the magnetization process of the transformer, prolong the data stabilization time or the value is incorrect.
5. Please check the power supply voltage before starting up: AC 220V±10%, 50Hz.
6. During the test, please confirm that the device under test has been powered off and disconnected from other live devices.
7. The case must be grounded reliably during the test.
8. Irrelevant items are not allowed to be stacked on and around the equipment panel during the test.
9. When replacing the fuse and accessories, please use the same model as this instrument (see technical specifications for details)
10. Pay attention to moisture and oil pollution for this instrument.
11. When selecting the current, please refer to the range in the technical index column. When the range is exceeded, the instrument is always in the "charging" state because the current does not reach the preset value. At this time, press the reset button to reset the instrument and select a smaller value. The current gear.

All our employees are willing to go hand in hand with our customers and friends from all walks of life to create brilliance with our high-quality Power and Distribution Transformer Measurement Winding Resistance Meter and enthusiastic service. The company insists on continuous reform and innovation in product development, corporate management and services in order to pursue new breakthroughs. Over the years, we have adhered to the development path of combining technology and market, guided by market demand, and guaranteed by technological innovation, to meet customer requirements for product performance, quality, and service, thereby creating greater value for customers.

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