Megger Seba EasyTest 20 kV - The Quick VLF Cable Tester
The Megger EasyTest 20 kV is a very small, lightweight testing device which offers the advantage of alternating voltage.
Quick
and reliable testing after installing or repairing cable systems has an
increasingly important. Reconnecting the voltage without testing is a
risk and is in accordance with most standards and internal regulations
not permitted.
The EasyTest 20 kV is a simplified version of the standard cosine rectangular VLF test. Typically, a test is performed in accordance with company specifications after repairs, or after a new cable has been installed.
A typical method of testing is a five- or ten-minute DC test in the
operating voltage range. Either simple DC testers or insulation testers
are used; however, with maximum voltages of 10 kV, they seldom come
close to the operating voltage range.
If a cable is old, it is a
well-known fact that DC voltage testing is useless, particularly for
XLPE cables. Moreover if the cables are old, the polarisation effects of
DC voltage testing can cause additional ageing or damage. Looking at
this current practice, it is clear that DC voltage tests can only reveal
the most serious problems. Hidden problems cannot be detected in this
way, which leads to breakdowns during operation following the test.
Megger solved this problem by developing EasyTest 20 kV with an output voltage of 20 kV and 0.1 Hz AC at 0.5 μF (and up to 2.5 μF at 0.02 Hz), the EasyTest 20 kV provides sufficient power to test 20 kV cables that are up to 2 km in length at 0.1 Hz with a test voltage of 1.7 Uo.
A DC voltage module with leakage current measurement is available for testing with both PVC and PILC. A sheath testing function and pulsed-output-voltage for sheath fault pinpointing complete the module’s testing options.
Measured
data can be saved to a memory stick with the optional logging function.
In combination with the Winkis/chip card version, all test parameters
can be set directly from the PC. After inserting the chip card, the test
parameters saved on it are loaded directly to the EasyTest 20 kV. Once the test has taken place, the readings are stored on the chip card.
Megger EasyTest 20 kV Key Features:
- Easy to operate
- Configurable test sequences
- Compact, rugged and lightweight design
- No polarisation effects
- Ideal for quick voltage test before putting a cable into operation
Megger EasyTest 20 kV Options:
- Logging by USB stick or chip card via Winkis VLF
- Pinpointing - Step voltage receiver ESG NT for sheath fault pinpointing
- External back voltage protection - Additional timer functionality for delayed HV ON, allowing you to leave the HV switchgear area. The system is switched off in the event of back voltage, and the HV output is operated by a circuit breaker. Visual and audible alerts indicate detected back voltage.
- Trolley