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H306B AC/DC Hipot Tester Megohmmeter - Overview

The H306B AC and DC Hipot Tester plus Megohmmeter is an accurate bench type instrument designed to perform insulation tests on all types of electrical system components, assemblies and apparatus. It is designed for AC dielectric tests, DC dielectric tests and insulation resistance measurements with direct megohmmeter readings at 500 volts DC output.

The AC/DC output configuration eliminates the need for purchasing separate AC and DC hipots. Output connected voltmeter ensures accurate voltage measurements regardless of output loading. The instrument is capable of testing to most industry specifications such as UL, CSA, VDE, IEC, and MIL for dielectric withstand testing.


H306B AC/DC Hipot Tester Megohmmeter


  • Continuously adjustable test voltages from zero to rated voltage.
  • Shielded output cable.
  • Adjustable Overload from 10% to 110% of rated current output.
  • Audible / Visual alarms provide a clear indication of overload situation.
  • Zero start interlock ensures that voltage control is at zero before HV can be energized.
  • Shorting solenoid grounds output cable and object under test.
  • Guard Circuit bypass unwanted stray leakage currents.
  • Adjustable electronic meter for accuracy.


  • Three Tests in One Unit - eliminates need for purchasing separate AC, DC Hipot and megohmmeter.
  • Operator Safety - the power supply and test object are automatically grounded when high voltage is turned off.
  • Meets Industry Specifications - tests to most UL, CSA, VDE, IEC, MIL for dielectric withstand testing.
  • Rack Mountable - easy installation into a 19-inch rack.

General Specifications

System Output

AC Voltage

0 to 5kV

DC Voltage

0 to 6kV


Negative Output, Positive Ground


4.5-inch analog panel meters, 2% full scale accuracy

Volt Meter Ranges

0 to 1.2kV and 0 to 8kV

Current Meter

0 to 50A, 500A, 5000A DC, and 0 to 5mA AC

Overload Current

Adjustable from 0.5mA to 5.5mA to

Megohm Range at 500V DC

x0.1 Multiplier

0.1 to 10MΩ

x1 Multiplier

1 to 100MΩ

x10 Multiplier

10 to 1000MΩ

x100 Multiplier

100 to 10,000MΩ

x1000 Multiplier

1000 to 100,000MΩ


53cm (W) x 51cm (D) x 28cm (H)






Input Voltage

* In the model number, designate 'A' for 120V 60Hz input or 'B' for 230V 50Hz input


Ordering Information

Haefely Hipotronics H306B-*

AC/DC Benchtop Tester and Megohmmeter

 Note* In the model number, designate 'A' for 120V, 60Hz input or 'B' for 230V 50Hz input

Included Accessories

Included with Instrument

Qty 1 High Voltage RG8/U cable (7.6m), and alligator clip.

Qty 1 Grounding stud with screw connector on chassis of controller

Qty 1 Calibration Certificate

Qty 1 User's Manual


Optional Accessories

Haefely Hipotronics HHDA13-280

Grounding Stick, 120kV max. voltage

Haefely Hipotronics HTP-F

Fixed Test Probe, 25kV max. voltage

Haefely Hipotronics TC-25

Test Cage, 25kV max. voltage

Haefely Hipotronics SPK1-H306B

Spare Parts Kit

Haefely Hipotronics HTL-S

Extra Test Lead

Haefely Hipotronics EXT-WARN-1

One year extended warranty


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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