VLF TEST SET:Model JLF 30 & JLF 60 are continuously adjustable 0 - 30 kilovolt and 0 - 60 kilovolt AC hipots with a 0.01 to 0.1 Hz sinusoidal output. The waveshape is independent of capacitive loading and can test cables upto 20km in length. The units are portable and operate from a conventional 230 volt electrical service.
The test sets is one piece consists input cable, output cable, cushion grip carrying handles facilitate transport by one or two men. Operator skill is not required.
Controls are elementary: Power on switch, HV ON, frequency, selector with indicators and a single range 30 KV/60KV peak kilovoltmeter. The unit is continuous duty operation.
A VLF test can detect cable defects at a much lower voltage than a DC Hipot/Proof test. Also, voltage transients are mush smaller with a VLF AC Hipot test during cable failure or flash over than with a DC Hipot / Proof test no travelling waves are generated with VLF during testing.
The VLF AC Hipot also bums, breaks-down and conditions a cable fault mcuh quicker than conventional DC burners. Therefore, fault locating time is reduced with existing thumper/rader devices.
Some benefits of Jupiter VLF - AC Hipots:
- Smallest, lightest weight AC-VLF Hipot availabel with the largest test load ratings.
- One piece portability.
- Simple and easy operation.
- 230 Vac. 50/60 Hz, Input line required.
- The VLF AC hipot does not generate harmful voids in the insulation through treeing.
- Harmful space charges dose not generated during testing.
- A true sinusoidal output voltage waveform is used.
- No traveling waves are generated during testing.
- Wavehape independent of capacitive loading between 0.01 and maximum load.
Additional test application:
- Rotating machinery-IEEE-433.
- Capacitors.
- Full red cable.
- Bishings and insulators.
- Transformers.
Need more information on VLF:
- For more information on our VLF products and VLF testing, please contact us.
Specifications VLF-30 (30kV, 10uF):
Input
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230V, 50/60Hz.
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Output voltage and frequency
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Sinusoidal, 0-30 kVac peak, 0.01 to 0.1 Hz.
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Load rating
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10 uF
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Duty
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Continuous
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Kilovoltmeter
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5" deflection 30-0-30 kVAC peak
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Charging current meter
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As per requirement
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Modes
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VLF AC & DC mode
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Weight
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40kg. approx.
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HV output cable
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10 mtr. with crocodile clamp.
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Interconnect cable length
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4 Mtr. with sockets
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Shorting stick
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2 Mtr., 2 Mtr. Lead with clamp.
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Specifications JLF 60 (60 kV, 10uF):
Input
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230V, 50/60Hz.
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Output voltage and frequency
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Sinusoidal, 0-60 kVAC peak, 0.01 to 0.1 Hz.
|
Load rating
|
10 uF
|
Duty
|
Continuous
|
Kilovoltmeter
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5" deflection 60-0-60 kVac peak
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Charging current meter
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As per requirement
|
Modes
|
VLF AC & DC mode
|
Weight
|
40kg. approx.
|
HV output cable
|
10 mtr. with crocodile clamp.
|
Interconnect cable length
|
4 Mtr. with sockets
|
Shorting stick
|
3 Mtr., 3 Mtr. Lead with clamp.
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