Portable Short-Circuit Impedance Tester

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Portable Short-Circuit Impedance Tester
Details
This device is specially designed for fast detection of transformer winding deformation.
It runs on 220V AC directly without an external voltage regulator and supports one-key automatic three-phase testing.
It accurately calculates impedance deviation and provides efficient and reliable on-site diagnosis.
Category
Transformer Test Set
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Description

Product Introduction

 

MOEORW-WBD21 This unit is engineered for rapid on‑site diagnostics in outdoor environments. Built inside compact, lightweight rugged enclosure, it features reduced overall weight for easy transportation toward remote substations and emergency repair sites without bulky auxiliary peripherals.

 

Product Parameter (specification)

 

Voltage measuring range

5~400V, accuracy class: 0.2

Current measuring range

0.1~20A, accuracy class: 0.2

Working power supply

AC220V±10%, 50Hz±1Hz

Operating temperature

-10℃~50℃

Ambient humidity

≤85%RH

Host weight

8Kg

Host dimensions

405mm×330mm×172mm

Test mode

single-phase / three-phase / manual / automatic

Protection function

output current limiting protection

Data function

data storage, printing, U disk export

 

Product Feature

 

  • Powered by AC220V, no external voltage regulator, on-site use is more convenient.
  • One-time wiring, automatic three-phase test without changing test lines.
  • Support single-phase / three-phase test, manual / automatic dual-mode operation.
  • Built-in output current limiting function, suitable for samples with any impedance.
  • Measure short-circuit impedance, reactance, impedance voltage, inductance and other parameters.
  • Large-screen LCD display, Chinese menu, easy to operate according to screen prompts.
  • With data printing, storage and U disk export functions, convenient for data archiving.
  • High test accuracy, fast speed, intuitive impedance error percentage display.
  • Compact structure, small size, light weight, suitable for frequent on-site tests.

 

 

Portable Short-Circuit Impedance Tester
Product Application

Suited for dispersed inspection assignments with frequent site transfers and limited workspace. Mainly serves routine maintenance screening for transformers up to 110 kV class.

 

 

 

FAQ

 

Q1: Does this instrument need an external regulator?

A: No, it can be directly powered by AC220V, with built-in test power supply, no external regulator is required.

Q2: Can three-winding transformers be tested?

A: Yes. Select high-low, high-medium, medium-low measurement positions, connect the test wire to the corresponding side, short the secondary side, and open other windings.

Q3: How to operate when using single-phase test for three-phase transformer?

A: Input 1/3 of the rated capacity, wiring and operation are the same as single-phase transformer test.

Q4: What is the basis for judging the test results?

A: Impedance error within ±2%: normal operation; ±2%–±5%: regular detection; >±5%: stop operation for maintenance.

Q5: How to save and export data?

A: Press SAVE to save to the instrument; return to the boot interface, insert U disk, press SAVE to export to U disk.

 

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