The smallest VLF /DC unit on the market now includes an integrated Tan Delta measurement system to perform advanced electrical insulation diagnostics. For example, this can be extremely useful when performing advanced diagnostics on cable systems as it provides valuable information as to the condition of the cable insulation and shield.
The instrument automatically performs a TD test, stepping up the voltage at the user prescribed levels (according to the IEEE) and stores the results. All test parameters including insulation resistance, capacitance, RMS current and voltage, test durations, voltage steps, tan delta, and standard deviation are all measured and displayed by the HVA28 LCD display or stored to an internal memory.
Test results can also be transferred directly to a USB memory stick or wirelessly via Bluetooth to a PC for later analysis and reporting using the supplied industry leading reporting software -TD Control Center. All units are shipped with a calibration certificate, TD Control Center software, corona protection shields, Bluetooth dongle, and an accessories tote.
| Key Features |
| Integrated TD unit |
| TD Resolution ±1x10-4 |
| TD Analysis & Reporting using TD Control Center |
| Digital RMS metering |
| Smallest unit available |
| Bluetooth/USB Mem. stick PC Interface |
| Color LCD Display |
| Weighs only 31 lbs / 14 kg |
| Insulation Resistance & Cap. Measurement |
| Perform advanced diagnostics on MV Cables according to IEEE400 and 400.2 |
| Output Frequency optimization |
| Real time oscilloscope display |
| Auto & Manual Test Sequences |
| Internal Storage of Test Reports |
| Unlimited duty cycle |
| Flashover voltage detection |
| Power supply immunity and independence |
| Low maintenance, oil-free design |
| RMS Digital Metering of Current and Voltage |
| Benefits |
|
| Output Modes | VLF 20kVrms/28kV Peak output
DC ±28kV
Sine/Square/ DC outputs
Cable Jacket / Sheath testing mode
TD measurement mode
Vacuum bottle testing mode
Fault Conditioning/Trip
Load independent output waveform
|
| Safety | Short circuit detection
Emergency Off button
Integrated internal discharge of DUT.
12kV power frequency voltage feedback protection
|
| Specifications |
|
HVA28TD
VLF/DC Hipot Tester with Integrated Tan Delta
|
|
| Feature | Parameter |
| Power Supply / Input Voltage | 110 to 240V AC ±10% (50/60Hz) |
| Input Power Requirements | 400VA |
| Rated Max Output Voltage | Sinusoidal RMS/Peak: 20kV/28kV
Squarewave: 28kV
DC: ±28kV
|
| Rate Max Output Current | Sinusoidal RMS: 20mA
DC/Squarewave: 28mA
|
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
|
| Metering | Voltage: 0.1kV Resolution ±1% Accuracy
Current: 1 µA Resolution ±1% Accuracy
Capacitance: 0.1 nF to 20 µF Range
Resistance: 0.1MΩ to 5GΩ Range
Timing: Included and integrated
Fast Arc/Flashover: Detection Included and Integrated
Waveform: 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 | USB Flash & BT
HVA Control Center Software included with every HVA instrument
|
| Memory / Test Record Storage | Built in Memory
50 Test Records
USB Flash Drive
Unlimited (see options)
|
| No. of programmable Automatic Test Sequences | 40 |
| Standard HV Test Lead Cable Included | 13ft / 4m |
| Weight | 31lbs / 14kg |
| Dimensions | Imperial (inches): 16.9 x 9.4 x 13.4"
Metric (mm): 430 x 240 x 340 mm
|
| Environmental | Storage: -13°F to 158°F / -25°C to 70°C
Operating: 23°F to 113°F / -5°C to +45°C
Humidity: 85% RH non-condensing
|
Note:
* Based on typical MV cable. 100pf/ft or 330 pF/m
Due to continuous development, the information may change without notice.
| Specifications |
|
| VLF/DC Hipot Tester |
|
| Model Overview |
|
| Model | Description |
| With Integrated Tan Delta |
|
| HVA28TD | Output Voltage: 29kV, 21kVrms,
Load: 0.5µF @ 0.1Hz @ 20kVrms,
Weight: 31lbs/14 kg
|
| HVA34TD | Output Voltage: 34kV, 24kVrms
Load: 1.5µF @ 0.1Hz @ 24kVrms,
Weight: 44lbs/20 kg
|
| HVA45TD | Output Voltage: 45kV, 32.3kVrms
Load: 1.0µF @ 0.1Hz @ 32kVrms,
Weight: 86lbs/39 kg
|
| VLF/DC Only - HVA Series |
|
| HVA34 | Output Voltage: 34kV, 24kVrms
Load: 0.5µF @ 0.1Hz @ 24kVrms,
Weight: 44lbs/20 kg
|
| HVA30-7 | Output Voltage: 34kV, 24kVrms
Load: 6.0µF @ 0.1Hz @ 24kVrms,
Weight: 125lbs/57 kg
|
| HVA60 | Output Voltage: 62kV, 44kVrms
Load: 1.0µF @ 0.1Hz @ 44kVrms,
Weight: 126lbs/57 kg
|
| HVA90 | Output Voltage: 90kV, 64kVrms
Load: 1.0µF @ 0.1Hz @ 64kVrms,
Weight: 280lbs/127 kg
|
| HVA120 | Output Voltage: 120kV, 85kVrms
Load: 0.5µF @ 0.1Hz @ 85kVrms,
Weight: 436lbs/198 kg
|
| HVA200 | Output Voltage: 200kV, 141kVrms
Load: 0.6µF @ 0.1Hz @ 141kVrms,
Weight: 2,094lbs/950 kg
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