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HV Diagnostics HVA28TD VLF/DC Hipot Tester with Integrated Tan Delta

HV Diagnostics VLF/DC Hipot Tester with Integrated Tan Delta

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Product Overview: HV Diagnostics HVA28TD VLF/DC Hipot Tester with Integrated Tan Delta

HV Diagnostics HVA28TD VLF/DC Hipot Tester with Integrated Tan Delta

An integrated Tan Delta measurement system has been added to the smallest VLF/DC machine currently available to perform cutting-edge electrical insulation testing. For instance, as it offers important details regarding the state of the cable insulation and shield, this can be very helpful when doing advanced diagnostics on cable systems.

According to the IEEE, the instrument automatically executes a TD test by increasing the voltage at the user-specified levels and saves the results. The HVA28 LCD display or an internal memory is used to display all test parameters, including insulation resistance, capacitance, RMS current and voltage, test durations, voltage steps, tan delta, and standard deviation.

Test results can also be remotely uploaded to a PC via Bluetooth or directly transferred to a USB memory stick for further analysis and reporting using the included TD Control Center reporting software, which is the industry standard. A calibration certificate, TD Control Center software, corona protection shields, a Bluetooth dongle, and an accessories tote are included with every machine.

Technical Data

Input Voltage 100 – 240 V, 50/60 Hz (400 VA)
Output Voltage
        Sinusoidal 0 – 30kV peak / 21kV rms
        DC ± 0 – 28kV
        Squareware 28kV
       Accuracy ±1%
       Resolution 0.1kV
Output Current 0 – 20 mA (Resolution 1 μA)  Accuracy: ± 1%
Resistance Range 0.1 MΩ… 5GΩ
VLF Output Frequency 0.01 … 0.1 Hz in steps of 0.01 Hz (default 0.1 Hz) –

auto frequency selection

Output Load 0.5 μF @ 0.1 Hz @ 20kV rms

5.0 μF @ 0.01 @ 20kV rms

10.0 μF maximum capacitance

Output Models AC (VLF) Symmetrical and load independent across full range,

DC (positive or negative polarity), Burn -/ Fault Condition or

Fault Trip Mode, Jacket/Sheath Testing

Sheath Test/Sheath Fault Location
      kV 0 – 10kV
      Trip Current 0.1 – 5 mA
Pulse/Period Variable
Safety 50/60 Hz – 12kV Feedback Protection /

Dual Discharge Device (internal)

Memory 50 Test Records Stores (internal)
Metering Voltage and Current (True rms and/or peak), Tan Delta,

Capacitance, Resistance, Time, Flashover Voltage

Tan Delta measurement resolution ± 1 x 10^4
Duty Cycle Continuous
HV Cable 5m/16.5ft with Alligator clamps
Software “TD Control Center”
Computer Interfaces
Bluetooth Standard
USB Standard
Environmental Conditions Storage: -25°C to + 75°C/ -13°F to 167°F

Operating: -5°C to 45°C/ 23°F to 113°F

Dimensions (L x W x H) 430 x 240 x 340 mm / 16.9 x 9.4 x 13.4 inches
Weight 14 kg / 31 lbs

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HV Diagnostics HVA28TD VLF/DC Hipot Tester with Integrated Tan Delta Calibration

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Calibration, inspection, cleaning, and/or repair may be available for the HV Diagnostics HVA28TD VLF/DC Hipot Tester with Integrated Tan Delta. Click to inquire about our calibration or other services.