ZWVLFS-30 VLF Hipot Tester

  • Simple and convenient, one-click can complete tests of CT secondary
  • It can meet the CT test on knee voltage up to 30KV
  • Automatically give CT, VT parameters
  • Full-featured

Company Profile

The company specializes in the research anddevelopment, production, sales, and service of electric power systemautomation testing equipment, providing customers with one-stopservices.

Product Introduction

CTP Series Transformer Tester is new product created after widely adopt customers’ advices and deep theoretical study. It is based on the automatic FA Series Transformer Tester General which is produced by our company that is widely acclaimed and applied. The adoption of high-performance DSP and ARM, advanced manufacturing technology ensure a stable and reliable product performance, full-featured, high degree of automation, high efficiency, in the domestic leading level, they are the professional testing equipments for transformer check in power industry.

Functional Characteristics

1. Full-featured, not only satisfy the test requirements of various CTs (include TP class), such as the excitation characteristics (i.e., volt-ampere characteristics), ratio, polarity, secondary winding resistance, secondary burden, ratio error and phase displacement, but can also be used for the tests of various PTs, including excitation characteristics of the electromagnetic unit, ratio, polarity, secondary winding resistance, ratio error and phase displacement.
2. Automatically give CT, VT parameters, including knee point voltage / current, 10% error curve, the accuracy limit factor (ALF), instrument security factor (FS), the second time constant (Ts), remanence coefficient (Kr), saturated and unsaturated inductance etc.
3. Test meet IEC60044 GB1208 (-1) GB16847 (IEC60044-6) CS57.13 became etc all kinds of transformer standards, and in accordance with the transformer types and levels of automatic choose which standard test
4. Based on advanced principle of low-frequency test method that can meet the CT test on knee voltage up to 60KV.
5. Friendly interface beautiful, all English graphic interface
6. The instrument can store 1000 groups of test data that won’t be lost when power off. After test ended, the data can be coped to PC by USB disk for analysis and being transformed into WORD report.
7. Test is simple and convenient, one-click can complete tests of CT secondary resistance, excitation, ratio and polarity.
8. Easy to carry, because the weight is less than 10Kg.

Technical Parameter

ZWVLFS-40 VLF Hipot Tester Technical Data

Size ZWVLFS-30
Output voltage ratings See Details of Table 1
Output frequency 0.1Hz, 0.05Hz, 0.02Hz
Degree of instability for peak value of output high voltage ≤1%
Degree of instability for frequency of output voltage ≤ 3%
Distortion rate of output voltage waveform ≤ 5%
Use condition indoor and outdoor
temperature -10℃+40℃
Humidity ≤ 85%RH
Power supply 220V±10%, 50±5%Hz
Power supply fuse tube See Details of Table 1

Table 1 Main Technical Parameters of ZWVLFS Series Ultra-low Frequency High-voltage Generator

Model Peak Voltage Measuring Range Weight Purpose
30/1.1 30kV ≤1.1μF @ 0.1Hz Controller: 4kg
Booster: 25kg
Cables, generators with voltage of 10kV and below
≤2.2μF @ 0.05Hz
≤5.5μF @ 0.02Hz
50/1.5 50kV ≤1.5μF @ 0.1Hz Controller: 5kg
Booster: 35kg
Cables, generators with voltage of 20kV and below
≤3.0μF @ 0.05Hz
≤7.5μF @ 0.02Hz
80/1.1 80kV ≤1.1μF @ 0.1Hz Controller: 5kg
Booster: 45kg
Cables, generators with voltage of 35kV and below
≤2.2μF @ 0.05Hz
≤5.5μF @ 0.02Hz


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