I---General introduction 
      1.GDYJ-501 is developed according to the national standard GB-86 Insulating Oil Dielectric Strength Testing Method .
      2.LCD screen can display test procedure and test result. All the human interaction operations complete by the rotating mouse .
      3.It is very easy for customers to measure the breakdown voltage of all kinds of oil by GDYJ-501. 
      4.You can print the test result by the micro printer internal the tester. 
      5.Of course, you can upload the test data to PC from RS232 for data analyzing. 
      6.The special circuit design makes the tester has a good performance at stability and anti-noise.

II---Functions
1 Breakdown test of user-defined
2 Proof test
3 Calibration interface for customers
4 Unloading data to PC and making word report automatically. 
5 Result print

III---Technique index 
1 Rated power supply: AC 220V±10% 50/60Hz
2 Output voltage: AC 0~80KV/AC 0~100KV
3 Rate of voltage rise: 2KV/s±10%
4 Measuring precision: 3 class
5 Times: 1-9  
6 Mixing time: 0~99 second  
7 Placing time: 0-9 minute 59second 
8 Save 100 groups of data most
9 Voltage limit setting for proof test: 20KV----70KV
10 Hold time for proof test:  1 minute -----10 minutes
11 Environment temperatures: 5-40℃     
12 Relative humidity: ≤80%RH
13 Size: 420×380×410mm3     
14 Weight: 28kg