HVA34 VLF/DC Instrument
HVA34 VLF/DC Instrument
VLF/DC Hipots
From the outset, HV Diagnostics was a pioneer in the development a small, portable, single piece oil free VLF (Very Low Frequency) Hipot test instrument that would be reliable, user friendly and more technically advanced than anything available in the industry. The model HVA30 was developed more than 10 years ago, quickly becoming a game changer in the industry making it the most popular VLF/DC unit on the market.
From those humble beginnings, the HVA Series of combo VLF / DC high voltage test instruments have grown and strengthened, both in voltage and power capabilities, while still maintaining the same unique quality and performance. From the smallest, but still incredibly capable VLF unit on market – the HVA28 – to one of the largest – the HVA200, we now offer a full spectrum of VLF / DC units covering a wide range of power and voltage requirements.
These instruments not only test MV (Medium Voltage) and Transmission class cables, they can also test vacuum bottles, cable jackets / sheaths, motors, generators, transformers etc. A very accurate true RMS measurement system measures and records load capacitance, insulation resistance (Megohmmeter), current, frequency, voltage, breakdown voltage and test duration. The HVA series of VLF instruments form the building blocks for the available Tan Delta and Partial Discharge instruments.
The well-known HVA Control Center Software comes free of charge with all HVA test instruments. Firmware updates are also performed free of charge for the life of the instrument and all new instruments are delivered with a NIST traceable calibration certificate.
HV Diagnostics HVA34 VLF/DC Test Unit
This model replaces the ground breaking and very popular model HVA30. The HVA30 was upgraded to the HVA34 to accommodate the new testing requirements for 25kV rated cables as per the latest revision of IEEE400.2 testing standard. Arguably the top selling VLF/DC instrument on the market, this instrument has become the standard for testing 25kV rated cables and below. The upgraded model includes an even more powerful output while keeping the same overall weight, physical dimensions, and user interface. A single piece design, weighting only 44 lbs / 19.5kgs, it is capable of testing up to 120, 000ft / 37km of cable. This is not just a VLF hipot, it also includes a DC hipot, Fault conditioning, Sheath testing, and Vacuum Bottle testing modes all housed in single piece, powerful test instrument.
Features:
- Test your 25(Maint), 15, 11, 8, 6.6, 5kV long MV cables
- Weighs only 44lbs / 19.5kg
- Perform tests fully automatically
- Oscilloscope Display of Output Waveform
- Insulation Resistance & Cap. Measurement
- RMS Metering of Current and Voltage
- Output Frequency optimization
- Internal Storage of Test Reports
- Download to PC and / or USB flash drive
- Unlimited duty cycle
- Flashover voltage detection
- Bright backlit LCD display
- Power supply immunity and independence
- Low maintenance, oil-free design
Output Modes:
- VLF Sinewave / Squarewave & DC outputs
- VLF 24kVrms / 34kVpk output
- DC ±34kV
- Cable Jacket / Sheath testing
- Vacuum Bottle testing
Safety:
- Integrated internal discharge of DUT
- Short circuit detection
- 12kV power frequency voltage feedback protection
- Remote interlock “kill switch” and HV status indication
Specs:
| Ordering Information: | 734 001 |
| Power Supply/Input Voltage: | 110 to 240V AC ±10% (50/60Hz) |
| Input Power Requirements: | 400VA |
|
Rated Max Output Voltage: Sinusoidal RMS/Peak Squarewave DC |
24kV/34kV 34kV ±34kV |
|
Rate Max Output Current: Sinusoidal RMS DC/Squarewave |
10mA 14.5mA |
| Output Frequency (default 0.1Hz): | 0.01Hz to 0.1Hz adjustable small increment of 0.01Hz (10 frequencies) |
| Frequency Optimization: | Yes |
| Maximum Output Load Capability @ maximum voltage and frequency: | 0.5µF *5000ft *1.5km |
| Maximum Output Load Capability @ Reduced Frequency and / or voltage: | 12µF *120 000ft *37km |
|
Metering: Voltage Current Capacitance Resistance Timing Fast Arc/Flashover Waveform |
0.1kV Resolution ±1% Accuracy 1 µA Resolution ±1% Accuracy 0.1 nF to 20 µF Range 0.1MΩ to 20GΩ Range Included and integrated Detection Included and Integrated Real time oscilloscope display of actual output voltage waveform |
| Output Mode (all load independent & symmetrical): | VLF AC Sinewave VLF AC Squarewave DC (both Positive and Negative Polarity) Fault Condition Mode / Fault Trip Mode Vacuum Bottle Test Mode (DC) – optional Cable Jacket / Sheath Test Mode |
| Output Duty: | Continuous |
| Computer Interface: | RS232 Standard, USB Flash Memory Download Module (optional) HVA Contol Center Software included with every HVA instrument |
|
Memory / Test Record Storage: Built in Memory USB Flash Drive |
50 Test Records Unlimited (see options) |
| No. of programmable Automatic Test Sequences: | 40 |
| Standard HV Test Lead Cable Included: | 13ft/4m |
| Weight: | 44lbs / 20kg |
|
Dimensions: Imperial (inches) Metric (mm) |
17 x 14 x 10 430x360x250 |
|
Environmental: Storage Operating Humidity |
-13°F to 158°F / -25°C to 70°C 23°F to 113°F / -5°C to +45°C 85% RH non-condensing |
* Based on typical MV cable. 100pf/ft or 330 pF/m
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