Fully-automatic type Transformer Dielectric Strength tester

ASSEN ST  Fully-automatic Transformer Dielectric Strength Tester Sets provide repeatable, accurate measurement of breakdown voltage of insulating oils used in electrical equipment. These versatile, lightweight yet rugged units have been designed for both field and laboratory use. 

1. Simple operation, automatically (can be finished just press on key)
2. Menu controlled. Input data is clear
3. Can store 99 groups of oil testing data, which is convenient to reading and print. The testing data can keep 100 years under the condition of power off.
4. System time can go on running under power off;
( The system time is just for reference which can not be the standard of timing)
5. Can upgrade software through RS232
6. High capacity of anti-jamming, high precision of testing.
7. Small volume, light, which can be operated in the open air very conveniently

Wtih auto test, auto handling, and auto print, and with high accuracy, easy operation and good safety.

The tester is applied to measure dielectric strength of insulation oil, test item being the instant voltage value of oil sample breakdown. The tester is a full auto oil-testing device, of high accuracy and photoelectric type, with a microprocessor served as the core component; The tester has successfully overcome the difficulty where strong electromagnetic field has a severe interference in microprocessor, making electromechanical integration possible.

Transformer Dielectric Strength Tester's technical Data:

1. 1. Power supply: AC220V ±10%, 50 HZ (Customizable)
2. 2. Voltage output: 80KV, 100KV
3. 3. Capacity: 1.6KVA, 2.0KVA
4. 4. Pressure increase rate: About 2 KVA/S
5. 5. Pressure testing speed: 3%
6. 6. Break down sensitivity : <2KV
7. 7.Wave form distortion :≤3%
8. 8.Time of break down: ≤10ms
9. 9.Operational environment: Temperature:0°C-40°C, Humidity: the most relative humidity85%
10. 10.Storage environment : Temperature:-20°C-60°C, Humidity: the most relative humidity75%.

Transformer Dielectric Strength Tester's Structure Chart:

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Q: What is BDV test for distribution transformer?
A: When you say BDV you might mean the dielectric strength of transformer oil. A new transformer oil should have at lest a dielectric strength of 39 KV. from a British standard.Transformer oils used are normally tested using ASTM D877-82 with the KV strength tester using 1" electrodes spaced 0.1" apart and the test voltage increased at 3,000 volts/min until it breaks down. The average Kv obtained after 8 trials is considered the Oil dielectric strength.
  Using this test method,dielectric strength at 30 kv and above is considered good. Dielectric strength between 23 to 29Kv is considered usable, but requires filtering. Below 23 kv, the transformer oil should be replaced. Another method ASTM D18747-82 uses the small radius electrodes but spaced only .o4 inches. The test voltage is 500volts/min and increased until breakdown. The dielectric strength is still the average Kv obtained in 8 trials. The dielectric strength of 28-29Kv is considered good. Below 28 kv, the transformer oil is usable but requires filtering. The latter method is considered a better test method.

Chongqing Assen Power Equipment Co.,LTD, which is professional in design, manufacture, sale of oil purification equipment, relevant testing instruments and provide comprehensive filtering solution, owns advanced production lines and sophisticated detection equipment, first-class R & D staff , professional workers and High-quality sales and service teams

Our Product: Double Stage Transformer Oil Purification system, Vacuum Lubricating Oil Purification, Vacuum Turbine Oil Conditioner, Portable Oil Purifier, Singe Stage Insulating Oil Purifier, Water Oil Separator, Light fuel Oil Purifier, and Fully-auto Dielectric Oil Tester, Turn ratio Tester, Acid Tester, Moisture Detector, Interfacial Tension Tester, etc.

Our Service: special filter technology consulting and solutions sector; fast after-sale service feedback system, well-trained service engineer; hands-on training and large-scale equipments operation myrmidon; regularly visit system, CRM customer relationship management system; rapid Filter wearing parts and spare parts supply system.