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700-D149 Series AC Dielectric Breakdown Tester - Overview

The 700-D149 Series of AC Dielectric Breakdown testers represent a new level of sophistication, flexibility and accuracy in dielectric testing equipment. Each unit is equipped with a PLC-based control system that is internally programmed to perform the D149 short-time test, step-by-step test, and slow rate-of-rise test.

The unit can also be easily programmed to perform variations on these test sequences. This dielectric testing equipment is equipped with a voltmeter circuit that continually samples the waveform to determine the breakdown voltage with the highest accuracy. The operator can control all test parameters as required. At the conclusion of tests, all relevant parameters (minimum, maximum, mean, and standard deviation) for a series of tests on a sample are automatically calculated. Units are available from 30kV to 100kV AC for a wide variety of applications.

700-D149 Series AC Dielectric Breakdown Tester

Model 750-2D149 (50kV unit pictured above)

  • PLC-based control and measurement system.
  • Preset tests.
  • USB for data download.
  • Internally programmed to perform all D149 type tests.
  • Adjustable test parameters (voltage, time, over current etc.).
  • Built-in safety test cage with interlock door.
  • Adjustable current overload.
  • Optional test fixtures and oil baths.
  • User friendly touch screen..


  • Complete test solution.
  • All metering performed with little or no operator intervention.
  • Software calculates all test parameters and print out of test reports.

General Specifications

Model Number





System Output (V): Tap 1

6 to 30kV

10 to 50kV

7.5 to 75kV

10 to 100kV

System Output (V): Tap 2

0.6 to 6kV

1 to 10kV

1.5 to 7.5kV

2 to 10kV

System Output (A)





Voltage Measurement Accuracy

5% of measured value, 0.6 - 30kV

5% of measured value, 1 - 50kV

5% of measured value, 1.5 - 75kV

5% of measured value, 2 - 100kV

Input VoltageNotes 1 and 2

120V 60Hz or
230V 50/60Hz

120V 60Hz or
230V 50/60Hz

230V 50/60Hz

230V 50/60Hz


58cm x 183cm x 61cm

58cm x 183cm x 61cm

183cm x 183cm x 91cm

183cm x 183cm x 91cm


Note 1:

in the model number, designate 'A' for 120V AC input or 'B' for 230V AC input

Note 2:

in the model number, designate '5' for 50Hz input or '6' for 60Hz input

Optional Accessories

Haefely Hipotronics TF-1 Note3

Electrode, 1-inch diameter

Haefely Hipotronics TF-2 Note3

Electrode, 2-inch diameter

Haefely Hipotronics TF-50 Note3

Electrode, 0.5-inch diameter

Haefely Hipotronics TF-25 Note3

Electrode, 0.25-inch diameter

Haefely Hipotronics TF-4.25 Note3

Flat plates, 0.25-inches thick 4.25-inches wide. Square edges, Rounded ends to 0.125 inches

Haefely Hipotronics OB Note3

Lucite Oil bath

Haefely Hipotronics TL-D149 Note3

High Voltage and Ground Test Leads. Used to connect terminations to alternative fixtures


Note 3:

in the part number, designate '50' for 30kV or 50kV max. voltage or '75' for 75kV or 100kV max. voltage

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Macey's Electrical Pty. Ltd.
ABN 17 344 601 468
Unit 1, 49 Gavenlock Road, Tuggerah, NSW Australia 2259
Phone: +61 2 4353 4644    Mobile: 0412 678 925