PS-ZD20 20A Transformer DC Winding Resistance Tester

PS-ZD20 20A Transformer DC Winding Resistance Tester

Transformer DC resistance is a required test item for semi-finished and finished products, covering factory testing, installation, overhaul, tap changer replacement, handover testing, and preventive testing in transformer manufacturing. It verifies the welding quality of winding joints and checks for short circuits between turns. The test also assesses each voltage tap changer contact position, confirms that the actual tap position matches the indicated position, detects broken lead wires, check

Transformer DC resistance is a required test item for semi-finished and finished products, covering factory testing, installation, overhaul, tap changer replacement, handover testing, and preventive testing in transformer manufacturing. It verifies the welding quality of winding joints and checks for short circuits between turns. The test also assesses each voltage tap changer contact position, confirms that the actual tap position matches the indicated position, detects broken lead wires, check

Product Selling Points

 

  1. 1. The complete instrument is controlled by a high-speed SCM for a high degree of automation and simple operation.
    2. The instrument uses advanced power-supply technology with multiple current outputs. The test range is wide and suitable for measuring the DC resistance of large and medium-sized transformers.
    3. Comprehensive circuit protection is provided for reliable operation.
    4. Discharge alarm and clearly visible discharge indication help reduce misuse.
    5. Intelligent power-management technology ensures the instrument operates in a minimum-power state when applicable, improving energy efficiency and reducing heat generation.
    6. 7-inch high-brightness touch color LCD display.
    7. Built-in calendar clock and power backup. Stores up to 1,000 groups of data for convenient retrieval at any time.
    8. Bluetooth, RS232, and USB interfaces enable communication with a computer and data storage on a USB drive.
    9. Built-in micro printer for printing measurement results.
    10. Download the dedicated APP. The instrument can connect to your mobile device via Bluetooth for control through the dedicated software. Test data is stored and uploaded for easy reference.
  2.  
Product Parameters

 

Item

Technical Specification

Remarks

Output Current

<20 mA, 1 A, 2.5 A, 5 A, 10 A, 20 A

 

Test Range

100 μΩ ～ 1 Ω (20 A)
500 μΩ ～ 2 Ω (10 A)
1 mΩ ～ 4 Ω (5 A)
2 mΩ ～ 8 Ω (2.5 A)
5 mΩ ～ 20 Ω (1 A)

Accuracy: ±(0.2% + 2 readings)

10 Ω ～ 20 kΩ (<20 mA)

Accuracy: ±(0.5% + 2 readings)

Resolution

0.1 μΩ

 

Data Storage

1,000 groups

 

Working Conditions

Temperature: 0℃ ～ 40℃
Ambient humidity: ≤ 90% RH (non-condensing)

 

Power Supply

AC 220 V ± 10 V, 50 Hz ± 1 Hz

Fuse: 5 A

Max Consumption

500 W

 

Dimension

Host: 405 × 230 × 355 (mm)
Accessories: 360 × 260 × 180 (mm)

 

Weight

Host: 15 kg; Accessories: 5.5 kg

 

Test Line

Standard 13 m

Length can be customized

 

Video

 

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