BDV test means the Breakdown Voltage Test. This test is performed for  verifying the dielectric strength of the oil of the transformer. Dielectric Strength is the maximum capacity to resist the voltage of insulating oil. This test demonstrates the dielectric Strength of Transformer Oil. and also to measure Break down Voltage of Transformer Oil


Oil BDV Tester was  fully automatic oil tester is applied to test the insulating oil’s dielectric strength. It is designed as per requirements of IEC165, and ASTM
Testing Method of Insulation Oil Medium Strength. By proper programming, it has got functions of auto boosting, step down, stirring, display and printing out. After breakdown of oil medium, HV break off will operate within 10 seconds to enable an auto isolation of control system partly; this effectively safeguards the personnel security and equipment safety. It adopts industrial SCM to control which is applied to integrate circuit, new model I/0 connection, particular testing and anti-jamming technology which largely improves the
machine’s capacity .


  • IEC156 / IS6792 / ASTM D1816 / ASTM D877 / UNE 21


  1. Easy operation,high automation. (only press button once and all work done automatically)
  2. Menu management, data input simple and convenient.
  3. Store 99 data of oil sampling tests for review and print. The test data can be saved even the power is off.
  4. The clock is still on after power off. (The internal time of the system just for test reference, not for standard time)


Power supply AC220V±10%, 50Hz/60Hz
Output voltage 60kV/80kV/100 kV
Capacity 2.0 kVA
Speed of voltage increase about 2 k V/ s
Voltage inspection accuracy 1 %
Breakdown sensitivity < 0.1 kV
Waveform distortion ≤ 1 %
Storage environment Temperature: 0 °C -40 °C
Humidity: Max. relative humidity 85%
Storage environment Temperature: – 20 °C – 60 °C
Humidity: Max. relative humidity 75%
Dimension 380mm*380mm*380mm
Weight 32kg(N.W.)


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