• GDRB-B Transformer Winding Impedance Tester (frequency response method)
  • GDRB-B Transformer Winding Impedance Tester (frequency response method)
  • GDRB-B Transformer Winding Impedance Tester (frequency response method)
  • GDRB-B Transformer Winding Impedance Tester (frequency response method)
  • GDRB-B Transformer Winding Impedance Tester (frequency response method)
  • GDRB-B Transformer Winding Impedance Tester (frequency response method)

GDRB-B Transformer Winding Impedance Tester (frequency response method)

Type: Universal Testing Machine
Load Way: Electronic Load
Loading Method: Dynamic Load
Display: LCD
Control: Computer Control
Weight: 0-100Kg
Customization:

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Basic Info.

Model NO.
GDRB-B
Power Source
AC220V
Oil Cylinder Position
no
Amplitude measurement range
(-100dB) to (+20 dB)
Amplitude measurement accuracy
0.1dB
Signal input impedance
1MΩ
Signal output impedance
50Ω
Overall weight
13Kg
Transport Package
Wooden Case
Specification
ISO, SGS
Trademark
HV Hipot
Origin
Wuhan China
HS Code
9030841000
Production Capacity
2000PCS/Year

Product Description

GDRB-B Transformer Winding Impedance Tester (frequency response method)

Product Description


GDRB-B Transformer Frequency Response Tester detects transformer winding movements and mechanical failures due to mechanical shock, transportation or short circuits. Detection of these displacements ahead of a dielectric failure can reduce unplanned maintenance costs, and provide the possibility to improve system reliability by preventing outages. Additionally, when damage is discovered, repairs may be targeted to a specific phase winding. GDRB-B can detect all level power transformers.


Features

1. Acquisition and control using high-speed, highly integrated microprocessor.

2. Communication USB interface used between a laptop and instrument.

3. Wireless WIFI interface (optional) used between the laptop computer and instrument. 

4. Hardware adopts dedicated DDS digital high-speed scanning technology (USA), which can accurately diagnose the faults like winding distorted, bulged, shift, tilt, inter-turn short-circuit deformation and inter-phase contact short-circuit.

5. High-speed dual-channel 16-bit A/D sampling (in field test, move tap changer, and the wave curve shows obvious change).

6. Signal output amplitude is adjusted by software, and the peak value of amplitude is ± 10V.

7. The computer will automatically analyze the test results and generate electronic documents (Word).

8. The instrument has dual measurement features: linear frequency scanning measurement and segment frequency scanning measurement, compatible with measurement mode of two technical groups in China.

9. The amplitude-frequency characteristics are in line with the national technical specifications on amplitude-frequency characteristics tester. X-coordinate (frequency) has linear indexing and logarithmic indexing, so you can print out the curve with linear indexing and logarithmic indexing. The user can choose either according to actual needs.

10. Automatic test data analysis system, compare between A, B, C -phases in winding similarity comparison, and the analysis results are: excellent consistency, good consistency, poor consistency, rather poor consistency
Compare winding deformation by calling the original data and comparing it with the current data of the same phase, namely A-A, B-B, C-C, and the analysis results are: normal winding, mild deformation, moderate deformation, severely deformation.

11. Word electronic document can be automatically generated for saving and printing.

12. The instrument can fully meet the technical requirements of electricity standard DL/T911-2004 "Transformer winding deformation frequency response analysis".


Specifications

1. Linear scanning distribution
Scanning measurement range: (1kHz) - (2MHz)  2000 scanning point, resolution 1kHz

2. Segment frequency scanning measurement distribution 

Frequency scanning measurement range:
(0.5kHz) - (1MHz), 2000 scanning points;
(0.5kHz) - (10kHz)  resolution 0.02kHz
(10kHz) - (100kHz)  resolution 0.2kHz
(100kHz) - (500kHz)  resolution 1kHz
(500kHz) - (1000kHz)  resolution 1kHz

Other parameters
Amplitude measurement range (-100dB) to (+20 dB)
Amplitude measurement accuracy 0.1dB
Scanning frequency accuracy 0.005%
Signal input impedance 1MΩ
Signal output impedance 50Ω
Signal output amplitude ± 20V
Test repetition percent 99.9%
Measuring instruments dimensions (LxWxH) 350X300X140 (mm)
Instrument's aluminum box size (LxWxH) 390X310X340 (mm)
Overall weight 13Kg
Environment working temperature: -10ºC~+40ºC;
Storage temperature: -20ºC~+70ºC;
 Relative humidity: <90%, Non-condensing;

GDRB-B Transformer Winding Impedance Tester (frequency response method)
GDRB-B Transformer Winding Impedance Tester (frequency response method)
GDRB-B Transformer Winding Impedance Tester (frequency response method)
GDRB-B Transformer Winding Impedance Tester (frequency response method)
GDRB-B Transformer Winding Impedance Tester (frequency response method)
GDRB-B Transformer Winding Impedance Tester (frequency response method)
 

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