Transformer DC resistance tester

1KDZR-10ATransformer DC resistance testerProduct Overview

The DC resistance of transformers is a necessary test item for semi-finished and finished products in transformer manufacturing, factory testing, installation, handover testing, and preventive testing by the power department. It can effectively detect manufacturing defects such as material selection, welding, loose connection parts, missing strands, and broken wires of transformer coils, as well as hidden dangers after operation.

Transformer DC resistance testerIt is a new type of instrument that integrates high-precision constant current power supply and DC resistance testing, greatly reducing the size and weight of the instrument and expanding the measurement range. This instrument is controlled by a high-performance microcontroller, which automatically completes stable current judgment, data acquisition and processing, and resistance display. It can quickly and accurately measure the DC resistance of transformers, transformers, generators, motors, and lines. It is an ideal testing product for power generation and supply units, transformer manufacturing industries, and large and medium-sized power consumption enterprises.

KDZR-10ATransformer DC resistance testerFunction and Technical Parameters

1、 Functional Features

Large output current, wide measurement range, small size, light weight, easy operation;

Fast testing speed, high measurement accuracy, good repeatability, and strong anti-interference ability;

L has * protection circuit and discharge alarm function, reducing misoperation and strong reliability;

Using high-performance microcontrollers, it automatically completes stable current judgment, data acquisition, and resistance display;

The longitudinal test of the DC resistance of the on load tap changer can be completed in one start-up test operation;

L has a temperature conversion function for testing resistance, which facilitates comparison with the resistance data of the test sample;

Adopting a 5-inch 800 * 480 high brightness LCD display with a brightness of up to 900nit, it is clearly visible under sunlight;

Equipped with a large capacity non-volatile memory, it can store 500 sets of measurement data and can be imported into a USB drive for storage;

Built in high-precision real-time clock function: capable of date and time calibration;

The instrument comes with a high-speed micro thermal printer that can print measurement and historical data.

IIKDZR-10ATransformer DC resistance testerTechnical Specifications

Output current 10A, 5A, 1A, 100mA, 10mA, 1mA

Measurement range 10A: 500 μ Ω～ 2 Ω

5A： 1mΩ～4Ω

1A： 5mΩ～20Ω

100mA：1Ω～200Ω

10mA： 10Ω～2kΩ

1mA： 100Ω～20kΩ

Resolution 0.1 μ Ω

Measurement accuracy ± (0.2% reading+2 words)

Dimensions: 345mm × 295mm × 175mm

Instrument weight 5kg

4、 Usage conditions

Environmental temperature -10 ℃~50 ℃

Environmental humidity ≤ 85% RH

Working power supply AC220V ± 10%

Power frequency 50 ± 1Hz

IIIKDZR-10ATransformer DC resistance testerPanel Introduction

Figure 5.1

①. I+, I -: Current output terminal.

②. U+, U -: Voltage input terminals.

③. Monitor: Used to display various operational and measurement data.

④. Keyboard: Used for various instrument operations.

⑤. AC220V: Power input interface for the entire machine, equipped with AC socket, fuse compartment, and switch.

⑥. Grounding post: The protective grounding of the entire machine casing.

⑦. Printer: Print measurement results.

⑧. USB: USB storage interface.

⑨. RS-232: Serial communication interface.

⑩. Buzzer: Instrument alarm indication.