GTD1001D Insulating Oil Breakdown Voltage (BDV) Tester:

The GTD1001D Insulating oil breakdown voltage tester adopts a completely new electromagnetic compatibility (EMC) concept, designed to prevent tester crashes during testing and to ensure stable operation even in high magnetic fields.

The GTD1001D also uses advanced voltage breakdown control technology, which keeps the breakdown energy at a very low level, preventing contamination of the oil sample during testing and ensuring that the test results are accurate and reliable.

A unique advantage of this tester is its built-in electronic boost system. The voltage regulation power supply utilizes an electronic inverter sine wave generator, providing accurate voltage output with high waveform quality. It is unaffected by grid voltage fluctuations and waveform distortions, which enhances the accuracy and efficiency of the test data. The built-in advanced insulating materials and heat dissipation system ensure that the step-up transformer remains stable and reliable, enabling the tester to withstand long-term high-voltage breakdown tests. This protects operator safety and prolongs the service life of the tester.

GTD1001D Insulating oil BDV tester Features ：
1.Reliable Testing Process:
With electromagnetic compatibility (EMC) designed to prevent tester crashes during testing, the insulating oil breakdown voltage tester can operate effectively in high-intensity electromagnetic environments.

2.0 ~100kV Stable and Precise Test Voltage:
Featuring a stable output of 0~100kV, the tester adopts a completely new breakdown voltage control technology (RBM) that minimizes breakdown discharge energy, preventing oil sample contamination during testing and ensuring reliable and accurate test results. The GTD1001D also holds the ILAC-MRA Standard Calibration Certification.

3.New-Type Oil Cup:
The GTD1001D oil cup is made from a new high-strength material with a long service life, preventing fragility and leakage issues during testing.

4.Complete Protection System:
The GTD1001D includes various protection devices to ensure the safety of both the operator and the tester in cases of faults, such as low breakdown voltage of the oil or empty cup breakdown.

5.Multiple International Testing Standards:
The tester supports fully automatic test sequences for 12 common international standards and spot tests (Standards: ASTM D877 & ASTM D1816, IEC 60156).

6.Internationally Universal Stainless Steel Calipers:
The precise adjustment of standard electrode distances is facilitated by international universal stainless steel calipers.

7.Overall Shielding Technology:
The comprehensive shielding technology prevents all sources of electronic interference, ensuring a pure test environment.

8.Multilingual Technical Instructions:
The tester provides English operation pages and instructions available in 15 languages.

TECHNOLOGY SPECIFICATION:

Type	GTD1001D Insulating Oil breakdown voltage(BDV) tester
Output voltage	0~80kV
Minimum resolution	0.1kV
Accuracy	±(2%×reading±0.2kV)
Voltage raise speed	0.5/1 .0/2.0/3 .0kV/s for option
Switch-Off time on breakdown, ms	≤1ms
Experimental times	1～6 for option
Programmed test standard	IEC60156/ASTM D877/ASTM D1816
Memory for result	30 groups
Volume of the oil cup	200ml standard; 300ml and 500 ml option
Gap between the poles	2.5 mm (Electrode gap is adjustable)
Temperature in operation	0~40℃
Relative humidity	≤80%RH, No dew
Power supply in operation	AC220V±10%, 50Hz±1%
Volume / Weight	Length 409 mm Width 393 mm Height 388 mm / 29kgs

Insulating Oil BDV Testing Procedure

1. Clean and dry the oil test cup, standard gauge, glass rod for stirring and glass plate for covering the oil cup.

2. Use a clean and dry oil sample bottle to take oil samples at the sampling port of the transformer (the sampling port should be cleaned, dried and processed), insulating oil should be cooled down to 27°C temperature before testing.

3. Rinse the oil cup three times with the sample oil. Use a gauge to adjust the distance between the electrodes of the oil cup (2.5 mm), then slowly inject the test oil into the oil cup along the stirring glass rod until it is ≥10 mm above the electrode, then cover the glass cover and let it stand still for 15 minutes to make the air bubbles in the oil overflow.

4. Then turn on the power supply, and increase the voltage evenly at a speed of 3~5kV/s until the oil cup electrode breaks down, and (KOF overcurrent trip) disconnect the power supply.

5. Use a stirring glass rod (about 2 mm in diameter) to gently move between the electrodes to remove carbon particles on the surface of the electrodes due to breakdown.

6. After stirring, stand still for 5 minutes and pressurize again.

7. The breakdown should be repeated six times in total, the first time is not calculated, and the average value of the five breakdowns is taken as the final oil pressure resistance value.

8. If insulating oil BDV value is above 30 KV, transformer oil is good.

Transformer insulating oil BDV test result: