VLF high voltage test set

Get to know the HVA68TD

the new member of our smartvlf® series

The HVA68TD is a truly compact and portable VLF test set that determines the condition of medium voltage cables with a voltage rating up to 46 kV (acc. to IEEE 400.2-2013).
It performs VLF and DC testing, as well as sheath testing with sheath fault location mode (additional fault probe needed). 

The high output power of the HVA expands greatly the load possibilities. It allows testing longer cables or several phases in parallel. The integrated Tan Delta diagnostics unit enables a straightforward condition assessment of the cable system.

The new HVA68TD is more than just a VLF tester. In addition to VLF testing & Tan Delta diagnostics capability, it allows to pre-locate arcs in the cable insulation. This makes the HVA68TD the smartest VLF test set available.


Arc Pre-Location (APL) 

A new dimension for VLF testing

VLF withstand tests are used to detect weaknesses in the cable insulation. While a healthy cable is passing the voltage withstand test unharmed, a cable with pre-damaged insulation will break down during this test, resulting in an arc.

Arc Pre-Location information adds additional value to traditional VLF testing, which helps to save time and cost in the subsequent cable fault location process. 

Performance: Best in class output power combined with outstanding TD diagnostics features. 

Duty cycle: Operating time of these test sets is not thermally limited; they may operate continuously.

Connectivity: On-site, no external PC is needed. All results can be downloaded later via USB or Bluetooth for further investigation and easy reporting with the b2 ControlCenter.

Safety first: Two independent discharge devices (electronic & mechanical) plus an integrated 12 kV backfeed protection system (at 50/60 Hz).

MWT: The HVA68TD offers Monitored Withstand Testing, a combination of withstand testing & Tan Delta diagnostics in compliance with the guide IEEE 400.2.

Flexible high voltage connection options: Our HV test leads enable a simple and safe connection between HVA & test object. They are available in different lengths and are quickly exchangeable.

Output voltage max. 68 kVpeak, 48 kVrms
Output load* 2 μF @ 0.1 Hz @ 44 kVrms

L x W x H*

466 x 340 x 510 mm / 
18.3 x 13.4 x 20.1 inch
Weight 63 kg / 139 lbs

*Subject to change without notice


True Modularity

HVA68TD can be easily extended to a complete cable diagnostics system by adding products from our PD or PDTD series at any time.

unlimited operating time

HVA test sets are designed for continuous operation without any thermal limitations.

Dry System

HVA test sets are constructed with non-arcing contacts and no need to change the oil. This eliminates the routine servicing and makes the test sets almost maintenance-free.


Our HVA series has been designed for maximum portability, resulting in widely applicable devices for any type of on-site use.

your benefits

  • pure sinusoidal output voltage (load-independent)

  • 12 kV transient protection (50 Hz)

  • Dual Discharge Device (DDDTM), integrated electronic and mechanical discharge devices

  • sheath fault pinpointing
    (in combination with sheath fault locator, not included)

  • easily exchangeable HV test lead
  • safe communication over Bluetooth
  • large color display (4.3")
  • programmable test sequences with a tailor-made software tool
  • download reports from the device via USB flash drive
  • vacuum bottle test

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