Introduction:

Transformer DC Resistance Tester is used to quickly measure the DC resistance of various transformer windings. Semi-finished products & finished product factory test, installation, handover test and preventive test of the power department in transformer manufacturing are mandatory test items, and the tester can effectively find the material selection, welding, loose connection parts, lack of shares, broken wires and other manufacturing defects and hidden dangers after operation of transformer windings.

Transformer DC Resistance Tester is composed of host, test line, temperature sensor, USB communication cable, etc.

The tester adopts microprocessor technology and precise 4-wire method to testing, which is accurate and reliable.

The tester has two power supply modes: AC 220V and large-capacity lithium built-in rechargeable battery,

and has two measurement modes: auto measurement and manual measurement.

The tester has the function of converting resistance at temperature 75℃, which can be compensated and converted according to the temperature and material of the tested sample.

The tester equip with 5-inch full-colorful high-definition touch screen, which with backlight adjustment function, clearly visible under strong light.

The instrument housing adopts waterproof protective case, which is anti-collision, anti-drop, waterproof, safe and durable.

The tester also equip with built-in printer, Bluetooth communication, and USB interface.

The tester also has automatic discharge function, alarm function, clock function, automatic shutdown function and so on.

It is an ideal instrument for quickly measuring the transformer DC resistance.

Function Features:

The tester has two power supply modes: AC 220V and large-capacity lithium built-in rechargeable battery, meet the user`s requirements in different site.

Two measurement modes, automatic measurement mode: the test current can be automatically selected according to the load. Manual measurement mode: There are 6 test current gears of 10A, 5A,1A, 100mA, 10mA, 1mA.

Max output voltage 24V, Max test current 10A, the test speed is fast and suitable to transformer measurement.

Equip with 5 inch true color LCD touch screen, when measurement can operate with touch screen and buttons.

Equip with built-in printer, which can print the measurement result on site.

With Bluetooth communication function, which can perform test operations or view the test result on the mobile phone after installing the APP.

The tester has USB interface and monitoring software,it can reading, viewing, saving, reporting, printing the historical data after connecting and communicating with computer.

With the discharge function, it can discharge automatically after the test, and the discharge indication is clear to avoid misoperation.

It has the function of resistance convertion at 75℃, which can be compensated and converted according to the temperature and material of the tested sample .

With alarm function, which can set the resistance alarm value.

Automatic shutdown function, automatic shutdown after 15 minutes without any operation.

Technical Specifications:

Function:Used for transformer winding resistance measurement and conductor DC resistance measurement.

Test Method:Precision 4-wire method, 2-channel A/D simultaneous detection

Test Mode:Automatic or Manual

Power Supply:AC 220V;DC 22.2V 5200mAh

Display Range:1.0uΩ~50.00kΩ

Range & Test Current

1. 200.0uΩ~50.00kΩ,Auto
2. 200.0uΩ~20.00mΩ,10A,0.2%FS
3. 10.00mΩ~200.0mΩ,5A, 0.5%FS
4. 100.0mΩ~2.000Ω,1A,1%FS
5. 1.00Ω~20.00Ω,100mA,1%FS
6. 10.0Ω~200.0Ω,≤10mA CVT, 1%FS
7. 100Ω~50.00kΩ,≤1mA CVT, 1%FS

Max Resolution:0.1uΩ

Measure Accuracy:0.2%

Wire Length Test: L: ≤99999m

Test Current Gear: AUTO,10A,5A,1A,100mA,10mA,1mA

Output Voltage: 24V MAX

Wire Conductor Length Test: L: ≤9999m

Standard Wire Conductor Length: 1m~200m

Temperature Measure Range: -55℃~125℃

Temperature Measure Accuracy: ±0.5℃

Measure Time: Sampling AD rate 1s/ time

Alarm Setting: Alarm threshold setting range: 1mΩ~2500Ω, 0Ω does not start up the alarm function, the tester will not start up the alarm function every start up.

Alarm Indication: When the test value exceeds the alarm setting value, the buzzer will alarm prompt.

Overflow Indication: Over range overflow function: over limit display digital:999999

Low Voltage Indication: When the battery voltage drop to DC22.2V±0.1V, will display low power symbol, and remind the tester charge in time

Data Storage: 600 groups (power down or replace battery will not lose the data)

Data Hold: Automatically hold displaying the measured results after each testing.

Backlight Adjustment: Drag the slider to adjust brightness

Clock Function: 24-hour clock with hours, minutes, seconds

Resistance Converted Calculate: Convertion according to the temperature and material of the tested product.

Discharge Function: Automatic discharge after testing, clear discharge indication to avoid misoperation.

Automatic Shutdown: Automatic shutdown after 15 minutes without any operation

Test Wires: Each 1pcs of red and black test line

Display Mode: 5 inch true color LCD touch screen, resolution 480X854

Host Size: 280mm×260mm×160mm

Weight: Total weight:6.4kg (with accessories)

Working Temperature And Humidity: -10℃~40℃; Below 80%RH

Storage Temperature And Humidity: -10℃~60℃; Below 70%RH

Protection Level: IP65(close the case)

Printer: Built-in printer

Bluetooth Communication: Yes

USB Interface: With the USB interface, install the monitoring software, storage data can upload to computer.

Withstand Voltage: AC 3700V/rms (between the case and the screw)