Overview

The HVA28 & HVA28TD are truly compact and portable VLF test sets for testing of medium voltage cables. They perform VLF and DC testing, sheath testing with sheath fault mode location. Assessments of cable condition can also be carried out by use of Tan Delta Diagnostics with the HVA28TD. MWT: the recently introduced Monitored Withstand Test (MWT), a combination of Withstand Testing and Tan Delta Diagnostics in compliance with IEEE can be performed. The HVA28 series offer outstanding features in terms of size, weight (14 kg) and performance (max. 10 μF). Safety: the instrument has two independent earthing devices (electronic and mechanical discharging) and an integrated 12 kV feedback protection system to protect both operator and instrument.

Features

• Output voltage 29 kVpeak ,
• 21 kVrms Pure sinusoidal output voltage (load-independent)
• Internal TD measurement with high accuracy (1 x 10-4)
• Tan Delta measurement with various frequencies (0.01-0.1 Hz)
• Leakage Guard® leakage current correction
• Output current 20 mA max
• 0.5 μF @ 0.1 Hz @ 20 kV rms
• Highest test capacity of 10 μF
• Ultra light and compact weight (14 kg)

Field use: a watertight and very rugged case with a protection class of IP67 makes additional transport boxes obsolete Connectivity: on site, no external PC is needed. All results can be downloaded later by USB or Bluetooth for further investigation and easy report creation on the PC Software Unlimited operating time: Operating time of the HVA high voltage generators are not thermally limited and can be operated continuously