VLF (Very Low Frequency) Hipot Testers are suitable for testing
power cables, transformers, switchgear, rotating machinery and
other electrical apparatus.For buyer's option:1.Tan dleta
(tgδ) test + Capacity(μF) + IR(Ω)2."IEE
400.2" Analysis of Tan delta test result3.Partial discharge
PD(pc) testing4.DC withstand voltage test (leakage current
display)-Micro-controller-Advanced digital frequency
technology-Built-in printer-Discharge free-Portable-60mins
Continous working-CE mark-Patent-5th generationVLF
Advantage1.AC Withstand voltage testing, Voltage & current curve
display.2.Tan delta (tgδ test), capacitance (μF) and IR
(ohm) Test without external device.3.Partial discharge testing
without external device (for buyer's option).4.DC withstandi
voltage test,DC leakage current measurement (for buyer's
option).5."IEE 400.2" Analysis of Tan delta test result.6.Safe
Optical isolation technology.7. Easiest to use Fully automatic
microcontroller.8. H/L voltage closed loop negative feedback
control circuit, output no capacity rise effect.9. Built-in
printer.10. Built-in protective
resistors. 11.
Colour Touch LCD (154*86mm)operation, True sine wave output.12.
Real-time display of actual output
waveform. 13.
Ergonomic, menu guided, large colour touch screen14. Storage
of test results 99 groups for later retrieval and
print. 15.
Over voltage and current protected.16.Auto variable frequency
0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz.17. 60 mins continuous
working;18. Data of current, voltage and waveform directly sampled
at HV side.19. IP67 waterproof rugged and reliable design.20.
Invatation
Patent 21.
Portable: only one unit for 30KV/40KV/50KV/60KV, 2 units for 80KV
(Control unit + Tank).22. CE mark.23. RS232/USB (for buyer's
option).Specification1.Power: 220V ± 10% AC (110V can be
customized), 50/60Hz, single phase;
2.Output-Voltage (Peak): 1 to rated value (KV);3.Output
frequency: 0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz (auto variable
frequency);4.Load: 0.5μF (approx 6,000 ft of cable) @
0.1 Hz 1.0μF (approx
12,000 ft of cable) @ 0.05 Hz
2.5μF (approx 30,000 ft of cable) @ 0.02 Hz
5.0μF (approx 60,000 ft of cable) @
0.01 Hz 5. Stability of frequency: Fluctuation <
0.5%;6. Measurement accuracy: ±3%;7. Positive and negative voltage
peak error:
≤3%; 8.
Voltage waveform distortion:
≤5%; 9.
Construction: only one unit for 40KV; 2 units for
80KV(1 Control unit +1 Tank).10. Ambient conditions
of use: temperature Indoor and outdoor : -10ºC
~ + 50ºC. 11.
Humidity:≤85% Model
noOutputVoltage(AC/DC)Output currentLoad
CapacityFuseStructureCapacitance/Frequency VLF-30TD1~30KVAC:
20mADC:
2000μAAuto/manual Frequency:0.1Hz-0.01HzCapacity≤10µF(1.0µF@0.1Hz/30KV)10AIntegrated
device:35kg1 Capacior: 3kgVLF-40TD1~40KVAC: 20mADC:
2000μAAuto/manualFrequency:0.1Hz-0.01HzCapacity≤10µF(1.0µF@0.1Hz/40KV)15AIntegrated
device:35kg1 Capacior: 3kgVLF-50TD1~50KVAC: 30mADC:
2000μAAuto/manual Frequency:0.1Hz-0.01HzCapacity≤10µF(1.0µF@0.1Hz/50KV)20AIntegrated
device:40kg1 Capacior: 4.2kgVLF-60TD1~60KVAC: 59mADC:
2000μAAuto/manual Frequency:0.1Hz-0.01HzCapacity≤5µF(0.5µF@0.1Hz/60KV)20AIntegrated
device:40kg1 Capacior: 4.2kgVLF-70TD1~70KVAC: 59mADC:
2000μAAuto/manual Frequency:0.1Hz-0.01HzCapacity≤5µF at
70KV;≤10µF at 50KV(0.5µF@0.1Hz/70KV)30AControl
part:35kg(Controller+1*30KV tank)1*40KV tank: 45kg1 Capacior:
4.2kgVLF-80TD1~80KVAC: 59mADC:
2000μAAuto/manual Frequency:0.1Hz-0.01HzCapacity≤4µF at
80KV≤10µF at 50KV(0.4µF@0.1Hz/80KV)30AControl
part:35kg(Controller+1*40KV tank)1*40KV tank: 45kg1 Capacior:
4.2kgNote: DC leakage current measurement for buyer's option.
12. Technical indexes of VLF tgδ test: 1)
tgδ test voltage range: 1 to 40KV; 2) Measurement
voltage accuracy: 3% 3) Dielectric loss test frequency:
0.1Hz 4) Measurement range: 0.01×10-3- 655.35×10-3 5)
Dielectric loss accuracy: 1x10-4 6) Dielectric loss
resolution: 1x10-5 7) Capacitance measurement range:
0.001μF-10μF 8) Celectric capacity resolution:
0.001μF
9) Current measurement range:
0-59mA
10) Current resolution: 0.1mA 11) Insulation resistance:
0.01GΩ-65.53GΩ 12) Insulation resistance resolution:
10MΩAnalysis of Tan delta test results (IEE400.2)13.Main technical
indexes of VLF PD test (for option): 1) Partial
discharge measurement range: 0.01pc-200pc 2) Partial
discharge detection sensitivity: 0.01pc 3) Capacitance range:
0.001μF-10μF 4) Sampling bits: 12 bits 5) Sampling
speed: 12M/S
6)
Test voltage: 0 to rated value (KV)14.DC leakage current
measurement (for option): 1) Output rated voltage: same as
rated AC voltage output 2) Voltage accuracy: 3% 3)
Leakage current range: 0-2000μA 4) DC Current
resolution: 1μA 5) DC current accuracy: 3% 6) It is
necessary to parallel the capacitor we
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