Description - Circutor MI20KVe Manual De Uso

1. Description

The MI-20KVe high-voltage insulation tester is a truly portable device that
allows measurements of insulation resistances using test voltages up to
20 kV. It employs a state-of-the-art technology for safe measurements of
insulation resistances up to 4,000,000 MΩ with 4 test voltages: 5 kV -
10 kV - 15 kV - 20 kV.
Readings are performed through an easy-to-read analogue indicator, hav-
ing a broad scale. This equipment is especially well suited to test insula-
tion resistances in transmission lines and medium voltage distribution sys-
tems, whether aerial or underground, as it allows to perform testing with
voltages near to the operational value. Besides, it is an excellent auxiliary
when detecting cable failures.
In order to maximize the operator's safety, this equipment was made
within a plastic cabinet of high dielectric strength. A light indicator warns
about dangerous voltages presence, both in the equipment and in the ele-
ment under testing, and switches off only when the discharge process has
finished.
This equipment has a GUARD terminal that allows to avoid the effects of
parasitic resistances and surface currents on the insulation resistances
under test. Due to its compact size and reduced weight, mechanical
strength, self-contained battery supply, this apparatus is particularly suit-
able for field tests under severe environments. It is easily to be carried,
very simple to be operated and stands severe handling conditions includ-
ing frequent shocks, extreme temperatures, vibrations during transporta-
tion through hard roads, long direct exposure to solar radiation, dust, sand
and other air-borne impurities, etc. Accuracy is not affected by all these
adverse conditions and it is still comparable with that of the best laborat-
ory instruments.
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