A 100 lb vlf instrument can do the job of a multi ton 60hz ac test set.
High voltage vlf hipot instruments.
The principal use of vlf is testing medium and high voltage shielded power cables.
On march 2019 engineer from hv hipot goes to india for conmissioning of 4500kva 750kv ac resonant test system which was imported a few years ago.
Offering the largest selection in the industry including ce marked models voltage ratings range from 30 kv 200 kv with load ratings from 0 4 µf 50 µf.
Critically the test object still receives the alternating sinusoidal voltage that would be supplied through everyday use but the size of the test equipment is.
Vlf very low frequency ac technology.
30 kv ac 200 kv ac e series digital.
A vlf hipot is an ac output tester with an output frequency of 0 1 hz or lower rather than 50 60 hz.
Vlf ac hipot test set gdvlf 80 was successfully tested in india.
Hvi provides the largest selection of vlf instruments including ce marked models the most powerful and highest voltage models and.
Designs and manufactures industry leading high voltage test equipment for proof testing diagnostic testing high voltage breakdown testing and preventative maintenance testing.
Dielectric strength and insulation resistance testing are combined into one instrument saving time money size and weight.
With the hvi vlf products it can be down with a practical economical and easy to use package.
34 kv ac 65 kv ac output range.
Cables should be tested with ac voltage.
Vlf hipots perform voltage withstand tests and provide the voltage source for diagnostic cable testing.
The pts 75 pts 75f5 and pts 75f6 are combination high voltage dc proof tester and megohmmeter.
Although the frequency is very low it is an alternating current with polarity reversals every half cycle.
Equipped with a 5 range current meter scaled 0 1 dc microamps for accurate current measurement down to a 10 nanoamp resolution in the x1 range.
Because vlf testing supplies a working frequency of 0 1hz as opposed to the 50 60hz usually required for live transmission the physical size of the vlf test set is massively reduced.
Hvi has been the world s leading source for vlf test equipment since 1998.
Trusted for the most technically advanced portable and user friendly high voltage equipment on the market.
0 1 hz 0 01 hz 0 4 µf 50 µf.
Pft series ac hipots test medium and high voltage electrical apparatus.
In june 2018 hv hipot engineer was invited to parth electricals for commissioning of gdvlf 80 vlf ac hipot test.
If the output exceeds the set limit of voltage the instrument will shut down to protect itself the actuation time is less than 20ms.
