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Huazheng Manufacture HZJQ-N1 BDV Dielectric Strength Tester Price

Many power systems, railway systems, large-scale petrochemical plants and enterprises have a lot of electrical equipment whose internal insulation are mostly oil-filled insulation type, and therefore, test on insulating oil dielectric strength is common and necessary. To meet the needs of the market, we have developed and produced a series of insulating oil dielectric strength testers according to national standard GB/T507-2002, industry standard DL429.9-91 and the latest Electric Power Industry Standard DL/T846.7-2004 by ourselves. This instrument, by using a single-chip microcomputer as the core, can operate in full automation with high accuracy, greatly improving work efficiency and reducing the labor intensity of workers. Moreover, it is small in size and convenient to carry.

I.Key Function And Feature

1.With a microprocessor, automatically fulfill the withstand voltage test for oil circulation with a range of 0～ 100KV (including boosting, maintaining, mixing, standing, calculation, printing and other operations).

2.Display by large-screen LCD and prompt by English menu.

3.Simple operation. The machine will automatically complete the withstand voltage test on one cup of sample oil after simple setting by the operator. Breakdown voltage value of 1 to 6 times and recurrent times will be automatically saved. After the test, the thermal printer will print each breakdown voltage value and average value.

4.Power-down preservation. It can save 100 tested results and displaying current ambient temperature and humidity.

5.Adopt a single-chip microcomputer to boost the voltage at an even speed. The voltage is accurate at 50HZ, ensuring the whole process easy for control.

6.Equipped with over-voltage, over-current and limit protections to ensure the safety of operators.

7.With the function of displaying the measured temperature and system clock.

8.Communicate with computer with a standard RS232 interface.（Optional）

II. Major Technical Indicators

1 . Output voltage: 0～ 100KV (optional)

2 . Voltage distortion rate: ＜3%

3 . Voltage raising speed: 0 .5～ 5 KV/S (adjustable)

4 . Standing time : 15m in (adjustable)

5 . Boosting interval : 5 min (adjustable)

6 . Boosting frequency: 1 ～ 9 time(s) (optional)

7 . Booster capacity: 0.5kVA× 2

8 . Measuring ac curacy: ±3％

9 . Supply voltage: AC220V±10% 50Hz/60Hz

10 . Power: 200W

11 .Applicable temperature: 0℃～45℃

12 .Applicable humidity: ＜75%RH

13 . Overall dimension: 465×385×425

III.Oil Cup Cleaning Method And Common Fault Clearances

1 . Oil Cup Cleaning Method

⑴Wipe the electrode surfaces and bars again and again with clean silk cloth .

⑵Adjust the electrode distance with standard gauge .

⑶Use petroleum ether (other organic solvents are forbidden) to clean thrice. Each time shall follow the bellow procedures :

①Pour the petroleum ether into the oil cup till the cup is 1/4 ～ 1/3 full .

②Cover the cup mouth with a piece of glass cleaned by petroleum ether . Shake the cup evenly for one minute with certain force .

③Pour away the petroleum ether and dry the cup with a blower for 2~ 3 minutes .

⑷Use the oil sample to be tested to clean the cup for 1~ 3 times .

①Pour the petroleum ether into the oil cup till the cup is 1/4 ～ 1/3 full .

②Cover the cup mouth with a piece of glass cleaned by petroleum ether. Shake the cup evenly for one minute with certain force .

③Pour away the left oil sample and then the test starts .

2 . Agitating Blade Cleaning Method

⑴Wipe the agitating blade again and again with clean silk cloth until fine particles are not found on their surfaces. It is forbidden to touch the surfaces with hands .

⑵Use forceps to clam p the blade; put them into petroleum ether and wash .

⑶Use forceps to clamp the blade and dry them with a blower .

⑷Use forceps to clam p the blade; put them into the oil sample to be tested and wash .

3 . Oil Cup Storage

Method 1 Fill the cup with good insulating oil after the test is finished and place it stable .

Method 2 Clean and dry the cup it into a vacuum dryer.

Note: The oil cup and agitating under the above procedures and then put blade shall be cleaned under the above procedures after the first test and tests with poor oil .

4 . Common Fault Clearances

⑴ Power light off, screen display off

① Check the plugging of power plug .

② Check the condition of the protector tube inside the power plug .

③ Check the socket electricity.

⑵ No punch through oil cup

① Check inserting of connectors on circuit board.

② Check contacting of cap high-voltage switch .

③ Check attracting of high-voltage contacts .

④ Check break of high-voltage line .

⑶ Light display contrast

① Adjust the potentiometer on the circuit board .