Xtester-ZSDL-III Transformer LV Short-circuit Impedance Tester Winding Deformation Test Equipment

2023-08-14 20:00:32

ZSDL-III Transformer LV Short-circuit Impedance Tester Winding Deformation Test Equipment

Main Features :
Serial No. : Xtester2300390

Specification

Email: 464560351@qq.com

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Xtester-ZSDL-III Transformer LV Short-circuit Impedance Tester Winding Deformation Test Equipment

INTRODUCTION

ZSKY-II transformer LV short-circuit impedance tester (hereinafter referred to as instrument) is mainly applicable to LV load impedance testing in delivery, heavy repair, pre-test and handover test of ≥35KV main power transformers (single-phase or three-phase).
LV short-circuit impedance measurement is a basic item among conventional test items and is used to compare the short-circuit impedance value measured before and after short-circuit current impact on a transformer. According to the variation degree, the winding deformation degree can be estimated preliminarily. The variation between the LV short-circuit impedance after short-circuit current impact on a transformer and the initially tested LV short-circuit impedance shall not exceed 2%.
LV short-circuit impedance test is the most direct method for checking for deformation of the winding of a transformer after it suffers from short circuit current impact during operation or mechanical force impact during transportation and installation. LV short-circuit impedance test is of much significance to judging whether the transformer can be put into operation and is also one of bases for judging whether the transformer needs inspection under disassembled condition.

Function introduction

1. Measurement of three-phase short-circuit impedance:

Displays three-phase voltage, three-phase current, and three-phase power; automatically calculates the impedance voltage percentage converted to the rated temperature and rated current of the transformer, and the error percentage of the impedance from the nameplate.

2. Measurement of single-phase short-circuit impedance:

Measure the short-circuit impedance of a single-phase transformer.

3. Measurement of zero sequence impedance:

The zero-sequence impedance measurement is suitable for transformers with a neutral point on the high-voltage side star connection.

4. It can be directly measured in the allowable measurement range of the instrument. If the measurement range is exceeded, an external voltage and current transformer can be connected. The instrument can set the ratio of the external voltage and current transformer to directly display the value of the applied voltage and current.

5. The instrument uses large-screen color high-resolution touch LCD, Chinese menu, Chinese prompts, and easy operation.

6. Built-in 2000W AC adjustable power supply, the voltage can be adjusted automatically.

7. The instrument is equipped with 232 interfaces, which can expand functions.

8. The instrument comes with a printer, which can print and display data.

9. Built-in memory can store 200 groups of measurement data.

10. The instrument is equipped with a U disk interface for accessing test data.

Permanent calendar, clock function, time calibration can be carried out.

Main technical indicators

Voltage (automatic range)	15～500V ±(reading×0.2%+3 words)
Current (automatic range)	0.5A～20A ±(reading×0.2%+3 words)
Power	COSΦ ＞0.15 ±(reading×0.5% +3 words)
Frequency (power frequency)	45～55(Hz) Measurement accuracy: ±0.1%
Short circuit impedance	0～100% Measurement accuracy: ±0.5%
Instrument display	4 digits

Built-in 2000W AC adjustable power supply. 0-220V 10A (Automatic adjustment)

Environment temperature	-10℃～40℃
Relative humidity	≤85%RH
Power supply	AC 220V±10% 50Hz±1Hz
Dimensions	380×260×120mm
Instrument weight	2.0Kg (not including test wire)

Lable: Xtester-ZSDL-III Transformer LV Short-circuit Impedance Tester Winding Deformation Test Equipment

Xtester-ZSDL-III Transformer LV Short-circuit Impedance Tester Winding Deformation Test Equipment

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