Product DescriptionVLF testing uses very low frequencies as part of
an AC cable maintenance routine. VLF testers are smaller and more
practical than AC testers but output the same amount of power as a
50 Hz mains device. This combination of size and power makes Very
Low Frequency cable testing perfect for testing longer sections of
cable and apparatus.AC is the standard used to transmit power
worldwide, usually at a frequency of 50 or 60 Hertz. While supplies
to railways and aircraft may use 162/3 of 400Hz, it is still a
sinusoidal voltage waveform. A VLF test is ideal for working within
these parameters.Transmitting power with an alternating current is
not as efficient as with a direct current however: while all power
transmission lines and cable networks do have the side effect of DC
resistance loss to the supply voltage, the level of capacitive loss
is even higher. This is largely due to the inherent coupling
between the phases involved. As a result, generating systems must
supply enough energy to meet user demand as well as compensate for
the large losses stemming from the transmission process. The small
size and high power of the VLF tester helps to solve the practical
problem of transmission loss during an AC test on very long
sections of cable and apparatus in the field.This equipment negates
the need for on-site generation, large step down transformers or
generating company supplies to be employed to power the items under
test.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. 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 much smaller.WESHINE invented the CDP series is a
compact, robust and portable VLF sine wave test system for medium
voltage cables. As an ideal tool for routine cable testing. For
both 0.1 Hz sine wave voltage tests and rectangular or DC voltage
tests, the VLF sine wave 34 kV fills the highest demands on the
test voltage quality and stability. Moreover, the integrated
"breakdown detection" shuts down the test voltage in the event of
an excessive charge current and guarantees limited damage to the
cable.For further information on Weshine's Service Solutions,
contact our 24/7 online sales representative on Made in China
or you may>>Click Here (for PC) or Click "Send Inquiry"
at the bottom (for APP) to get quotes from Weshine. PRODUCT
INFORMATIONProduct NameVLF Cable TesterModel NumberVS-VLFOutput
Frequency0.1 Hz, 0.05 Hz, 0.02 HzOutput Voltage30 kV ~ 90 kVHigh
Test Capacity5.5 μFProtection FunctionOver-voltage
Protection, Over-current Protection.Typical ApplicationPower
Cables Below 35 kV; Generators Hipot Test.CertificatesCE; EMC; LVD;
ISO; IEC;Weight4+25 kg Recommend Products FeedbackCompany
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