Descriptions 

The GOLD GDVA test set is a lightweight, robust, portable unit capable of testing both current and voltage transformers. At less than 15Kg the GDVA is a highly portable unit that also offers accuracy in testing. Capable of performing saturation, ratio, polarity, winding resistance, and insulation tests on current transformers, the GDVA can also be used for testing metering and protection class voltage/potential transformers.

The GDVA provides a microprocessor controlled variable voltage and current output along with precision instrumentation for automatically testing single and multi-ratio CT's and PT’s. The GDVA makes testing CT’s easy. It will directly connect to multi ratio CT’s and perform all tests – saturation, ratio and polarity, winding resistance, and insulation – on all taps with the push of a button and without changing leads. This greatly reduces testing time.

The GDVA can be controlled via its large, full color, high resolution, sunlight readable TFT LCD touch screen display. This interface allows the user to perform manual and automatic testing quickly and easily using the manual test screen, or by using ore-constructed test routines. The large color display also permits the user to easily read all pertinent data while the test is being performed and provides the ability to view the results when the test is complete.

Main test function

CT (protection, measurement)	PT
Volt-ampere characteristic (excitation characteristic) curve	Volt-ampere characteristic (excitation characteristic) curve
Automatically give the inflection point value	Automatically give the inflection point value
Automatically give 5% and 10% error curves	Transformation ratio measurement
Transformation ratio measurement	Polarity judgment
Polarity judgment	Ratio measurement
One flow test	Angle difference measurement
Ratio measurement	AC withstand voltage test
Angle difference measurement	Secondary load test
AC withstand voltage test	Secondary winding test
Secondary load test	Iron core demagnetization
Secondary winding test
Iron core demagnetization

 

 

 

Features

1) Able to test Protection CT’s, Measuring CT’s, TP class CT’s and inductive PT’s

2) Test excitation characteristic and error curve based on low-frequency measurement principle

3) Measure ratio, polarity, ratio error and phase displacement error based on voltage method

4) Adopt patented multifunctional rotary mouse to replace the keypad

5) Adopt 5.7 inches LCD screen for display

6) Adopt DSP, ARM and embedded LINUX operation system

7) Both local test and PC remote test available

8) Higher measurement accuracy: 0.05 %

9) Print test results directly by built-in thermal printer

10) Small and light weight for easy transport

CT/PT Analyzer Technical Index

1) Test standards: IEC60044-1, IEC60044-6, IEC60044-2, IEC60044-5, C57.13

2) Power supply: AC220V±10%, 50/60Hz±10%

3) Voltage output: 0.1~180V (AC)

4) Current output: 0.001~5A(RMS)

5) Power output: 500VA

6) Maximum knee voltage measurement: 45KV

7) Current measurement:

Range: 0~10A (automatically change range in 0.1/0.4/2/10A)

Error: <±0.1%+0.01%FS

8) Voltage measurement:

Range: 0~200V (automatically change range in 1V/10V/70V/200V)

Error: < ±0.1%+0.01%FS

9) Turns ratio measurement:

Range:1~35000

1~2000     error<0.05%

2000~5000  error<0.1%

5000~35000  error<0.2%

10) Phase measurement: error: ±2min; resolution: 0.01min

11) Winding resistance measurement: 

Range: 0~8kΩ (automatically change range in 2ohm/20ohm/80ohm/800ohm/8kohm)

Error: < 0.2%RDG+0.02%FS

Maximum resolution: 0.1mΩ

• Temperature measurement:-50~100 Celsius degree;
      error<3 Celsius degree
• CT Secondary burden:

Range: 0～160ohm (automatically change range in 2ohm/20ohm/80ohm/160ohm)

Error: <0.2%RDG+0.02%FS 

Maximum resolution: 0.001ohm

14)PT Secondary burden:

Range: 0～80kohm (automatically change range in 800ohm/8kohm/80kohm)

Error :<0.2%RDG+0.02%FS 

Maximum resolution: 0.1ohm

15)PT ratio measurement:

Range: 1~35000

1~5000  error<0.2%

5000~35000  error<0.5%

16) PT phase angle test: error < 9min

17) Memory capacity: >1000 groups test results 

18)Working condition: temperature: -10℃～50℃; moist: ≤90%

19) Size: 485mm×356mm×183mm

20) Weight: <15kg