GlobeCore / Products / Instruments - Transformer Oil Testers / TOR-80A (TOR-80 ASL) Transformer Oils Breakdown Voltage Tester with Battery

TOR-80A (TOR-80 ASL) Transformer Oils Breakdown Voltage Tester with Battery

80 kV | Breakdown voltage | Battery | Compact

The TOR-80A tester is a portable device for measuring the dielectric strength (breakdown voltage up to 80 kV) of transformer oil and other liquid dielectrics. It operates in accordance with IEC 60156, VDE 0370, ASTM D877, ASTM D1816, and IRAM 2341 standards, which can be updated or expanded to meet evolving regulations and customer requirements. Equipped with an internal rechargeable battery, the TOR-80A allows for fully autonomous operation directly on-site, providing accurate and reliable measurements in the field.
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The TOR-80A (TOR-80 ASL) tester is designed for assay transformer oil and other liquid dielectrics by measuring the electrical breakthrough voltage. The electrical breakthrough voltage is measured in accordance with IEC 60156, VDE 0370, ASTM D877, ASTM D1816, IRAM 2341. This list of standards can be modified and expanded according to the customers’ wishes and to the development of standards’ new versions.

The TOR-80A (TOR-80 ASL) tester feature is an internal rechargable battery that provides the possibility of autonomous operation in the field at the place of the transformer functioning.

Testing procedure

The start screen appears on the display after filling the measuring cell with oil and switching the device on. The operator selects the type of oil and the procedure of testing. TOR-80A starts testing automatically. The result totals are displayed after the last test cycle breakthrough. If needed result totals can be transferred for printer directly from the tester.

No.

Parameter

Value

1

Operating AC voltage, V

85–264

2

AC power frequency, Hz

48–63

3

Power requirement, VA

70 (max)

4

Max output voltage, kV

Sinusoidal, up to 80 kV RMS

5

Output voltage measurement accuracy, %

± 1

6

Voltage increase rate, kV/sec (adjustable)

0.5–10.0

7

Output voltage display resolution, V

100

8

High voltage shutoff time after breakdown, µs

10 (max),

4 (typical)

9

Measuring cell volume, cm3

500 (30.5)

10

Temperature measurement range, °C (°F)

0–100 (32–212)

11

Temperature measurement limit, °С (°F)

0.1 (32.18)

12

Integrated printer

Yes

13

Rechargeable battery pack

Yes

14

Continuous offline (battery-powered) operation time, h

8

15

Battery charging time, h

8

16

Operating temperature, °С (°F)

-10–50 (14–122)

17

Transportation and storage temperature, °C (°F)

From -15 to +40 (from 4.99 to 104)

18

Relative humidity, %

Up to 90, non-condensing

19

Atmospheric pressure, mmHg

630–800

20

Overall dimensions, mm (in)

510 х 300 х 413

(20.1 х 11.8 х 16.3)

21

Weight, kg (lbs), max

38.1 (84)

  • tester can work autonomously for eight hours on fully charged battery;
  • tester meets the highest technical requirements, has modern electronics, design and software;
  • tester is a reliable, practical and easy to use device;
  • tester saves time and money by testing the oil at the transformers operation site.

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Webinars

On August 22–23, 2025, GlobeCore together with our official dealer in Thailand – Stardom Engineering Co.,Ltd., represented by Mr. Pakin Thanatawee, took part in the TEMCA M&E Expo Thailand 2025. The event was held at the Royal Cliff Hotels Group in Pattaya and became one of the key trade shows in Southeast Asia for electrical and mechanical engineering. At Booth H37, visitors had the opportunity to explore GlobeCore devices for transformer oil testing. These solutions are designed to enhance the reliability and efficiency of power transformers and other energy equipment. GlobeCore Showcased Equipment at TEMCA M&E Expo Thailand 2025

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