DeFelsko® PosiTest® HHD Verifiers


BlastOne offers all DeFelsko instruments and accessories on-line for easy access to operation manuals, ordering, and more.

This group of products are stand-alone voltage testers for the High Voltage Holiday Detectors.  Although the PosiTest® HHD units have built-in voltmeters with a traceable calibration certificate, other brands may not, and some standards call for standalone voltmeter verification.

Two versions are available, as follows:

  • MPN: HHDVERIFY, for all Pulse-type holiday detectors in the range from 500 to 35,000 volts.
  • MPN:  HHDCVERIFY, for all Continuous-type holiday detectors in the range from 500 to 30,000 volts.

Note:  Each unit comes ready-to-use with verifier, 1.8m (6 ft) ground wire, batteries, and more.

DeFelsko® PosiTest® HHD Verifiers


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$675.00 - $690.00

Ship to 20149



The DeFelsko® PosiTest® HHD Verifiers serve as an essential tool for professionals seeking to validate the performance and accuracy of their holiday detectors. Suitable for use with both pulse-type and DC detectors, these verifiers facilitate routine checks, ensuring your equipment operates correctly and efficiently. Their lightweight design and portability make them an excellent choice for both on-site and laboratory testing. Operation is straightforward, requiring no external power source, thereby simplifying the verification process. Please note that specific DC holiday detector designs may result in higher than anticipated readings due to their unique operational characteristics.


  • Suitable for pulse-type and DC holiday detectors.
  • Ideal for laboratory and field testing.
  • Simple setup and easy to operate.
  • Lightweight and portable design.
  • Operates without an external power source.
  • Made in the USA.