HV Diagnostics HVA-90 Electrical Plant Tester

Description
It is well known that DC testing of aged extruded cable such as XLPE and EPR is potentially damaging to the cable insulation causing premature failure of the cable under service conditions. Any form of DC testing has been found to be ineffective in detecting even serious faults in such cables. It is because of these limitations that International and National bodies such as CENELEC, VDE, SABS and the IEEE now recommend testing utilising low frequency AC test systems. VLF testing enables the cable test engineer to detect insulation defects before the cable fails in service.
 
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Features

  • Lightweight portable unit.
  • Solid state air insulated design.
  • True sine wave low frequency output.
  • Suitable for VLF, DC and Jacket/sheath testing.
  • Fault conditioning capability.
  • Test result storage capability.
  • Full short circuit protection with arc management regulation.
  • Provides compliance with CENELEC, IEEE 400.2, VDE
  • 0296 and other international standards.
  • Manual or fully automatic test sequence selection.
  • Real-time display of actual output waveform.

Model HVA90 Specifications (PDF)
(documents are in PDF format and will open in a new window)
 
Specifications

Input Voltage

210 to 265 Volts 50/60Hz (single-phase)

Output Voltage

 

Sinusoidal: 0 - 90 kV peak, Symmetrical, 64kV RMS
DC±: 0 - 90 kV
Accuracy ±1%

Output Current
 

0 - 40 mA (Resolution 1µA)
Accuracy ±1%

Resistance Range

0.1 MΩ  to 5GΩ

Output Frequency

0.01 ..... 0.1Hz in steps of 0.01Hz

Output Load




 

1.0μF @ 0.1Hz @ 64kV RMS (Approx 3,300m / 11,000ft of cable)*

1,2μF @ 0.1Hz @ 57kV RMS (Approx 3,600m / 12,000ft of cable)*

10μF @ 0.01 Hz @ 64kV RMS (Approx 33,000m / 100,000ft of cable)*

10μF Maximum Capacitance

* Based on a typical cable: 100pF/ft or 300pF/m

Output Modes


 

AC Hipot (VLF) Symmetrical and load independent across full range
DC positive and negative polarity
Burn/Fault Condition or Fault Trip Mode
Jacket/Sheath Testing

Memory

Up to 50 test records stored in non-volatile built in memory

Metering
 

Output Voltage and Current (true rms and peak)
Capacitance, Resistance, Time, Flashover Voltage

Weight

127kg/280lbs

Computer Interface

RS-232 connection (software included)

Dimensions
 

25.6"x 17.5"x 24"
(650cm x 445cm x 610cm)
 
 
Rental Inquiry Information
 

Reference:

 HVA90

Description:

 HV Diagnostics Model HVA 90 Electrical Tester