The VLF testers (Generator) are suitable for
testing cables, transformers, switchgear,
rotating machinery, and other
electrical apparatus.
VLF ADVANTAGES:
· Easiest to use Fully automatic microcontroller
· Built-in printer
· True sine wave output
· Real-time display of actual output waveform
· Ergonomic, menu guided, large backlit LCD
· Storage of test results for later retrieval and print.
· Over voltage and current protected
· Variable frequency 0.1Hz, 0.05Hz, 0.02 Hz
· Data of current, voltage and waveform directly sampled at HV side.
· AC testing does not degrade good cable insulation
· Harmful space charges are not injected into the cable insulation
· No traveling waves are generated during testing
· Rugged and reliable design less prone to failure from transients
SPECIFICATIONS
|
Type
|
Output
Voltage/Current
|
Load Capacity
|
Control Unit
|
Booster
|
Fuse Tube
|
||
|
Frequency/Capacitance
|
Dim.
(cm)
|
Wt
(kg)
|
Dim.
(cm)
|
Wt
(kg)
|
|||
|
VLF-30/1.1
|
30KV/20mA
|
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
|
28×37×22
|
4
|
33×18×34
|
25
|
5A
|
|
VLF-40/1.1
|
40KV/30mA
|
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
|
28×37×22
|
4
|
35×20×36
|
35
|
6A
|
|
VLF-50/1.1
|
50KV/40mA
|
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
|
28×37×22
|
4
|
37×24×39
|
45
|
7A
|
|
VLF-60/1.1
|
60KV/50mA
|
0.1Hz ≤ 1.1uF
0.05Hz ≤ 2.2uF
0.02Hz ≤ 5.5uF
|
28×37×22
|
4
|
33×18×34
33×18×34
|
25+25
|
10A
|
|
VLF-70/0.5
|
70KV/55mA
|
0.1 Hz, ≤0.5µF
0.05Hz, ≤1.0µF
0.02Hz, ≤2.5µF
|
28×37×22
|
4
|
33×18×34
35×20×36
|
25+35
|
10A
|
|
VLF-80/0.5
|
80KV/60mA
|
0.1 Hz, ≤0.5µF
0.05Hz, ≤1.0µF
0.02Hz, ≤2.5µF
|
28×37×22
|
4
|
33×18×34
37×24×39
|
25+45
|
12A
|
|
Input
|
: 220 ± 10% Volts AC, 50 Hz
|
|
Output-Voltage AC
|
: 30kV / 40kv / 50kV / 60kv/ 70kv / 80kV
|
|
Output frequency
|
: 0.1Hz, 0.05Hz, 0.02Hz.
|
|
Stability of frequency
|
: Fluctuation < 0.5%
|
|
Measurement accuracy
|
: ±3%.
|
|
Positive and negative voltage peak errors
|
: ≤3%.
|
|
Voltage waveform distortion
|
: ≤5%
|
|
Protection
|
: Mains fuse.
Over voltage protection.
Over current protection.
Protective HV resistor connected inside.
|
|
Construction
|
: temperature Indoor and outdoor : -10°C to + 40ºC.
Humidity:≤85%
|
|
Ambient conditions of use
|
: 1) Cable for mains supply: 1 number.
2) Interconnecting cable: 1 number.
3) H.V. Test lead: 1 pair.
4) Discharge rod: 1 number.
5) Operating manual: 1 number.
|