We developed transformer oil tester according to the standards of IEC156 and ASTM. The following tests we recommended for a complete
analysis of transformer oil:
The dielectric breakdown is an indication of the oil`s ability to withstand
electrical stress. The most commonly performed test is ASTM D-877, and because
of this, it is more readily used as a benchmark value when comparing different
results. The oil sample is placed in a test cup and an AC voltage is impressed
on it. The electrodes are two discs, exactly 1 in. in diameter and placed 0.10
in. apart.
The voltage is raised at a constant
rate, until an arc jumps through the oil between the two electrodes. The
voltage at which the arc occurs is considered the dielectric strength of the
oil.
For systems over 230 kV, this test
is performed using spherical electrodes spaced 0.04 or 0.08 in. apart (ASTM
D-1816). Portable equipment is available for performing both levels of this
test in the DST automatic transformer oil tester is developed especially
for measurement of insulating oil's breakdown voltage, it is unique in the
market due to its functionality and the excellent user benefit in comparison to
costs. The DST transformer oil tester provides delivers clear and reliable
measurement results. It is no longer necessary to send samples to the
laboratory. Environmental and transport influence on the samples are minimized.
Due to its design, the tester is particularly handy, easy to operate and
especially excellent to use under tough ambient conditions. By proper
programming, DST transformer oil tester has got functions of auto boosting,
step down, stirring, display and print out.
Company: Acore
Filtration Co.,Ltd
Website:
Email: ,
Tel: +86 23 8132
4618
Whatsapp &
Mobile: +86
Skype: acorefiltration
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