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Idiomas disponibles
Idiomas disponibles
Description
The MI-20KVe High-Voltage Megohmmeter is a truly portable device that allows the measurement of insulation resistances
using test voltages up to 20 kV. It employs a state-of-the-art technology for the 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, having a broad scale. This equipment is specially well suited to test isolation resistances in transmission
lines and medium voltage distribution systems, 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, with no metallic accessible
parts. A light indicator warns about dangerous voltages presence, both in the equipment and in the element under testing,
and switches off only when the discharge process has finished. This megohmmeter 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 suitable for field
tests under severe environments. It is easily to be carried, very simple to be operated and stands severe handling conditions
including frequent shocks, extreme temperatures, vibrations during transportation 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 laboratory instruments.
Measurements
Control panel
)
#
$
%
&
'
(
*
!- POWER INPUT.
"- FUSE.
#- 20 kV TEST VOLTAGE.
$- 15 kV TEST VOLTAGE.
%- 15 kV TEST VOLTAGE.
&- 5 kV TEST VOLTAGE.
'- CURRENT RETURN terminal (-R).
(- GUARD terminal (G).
)- ANALOGUE indicator.
2.000
3.000
1.400 1.500
4.000
1.300
5.000
1.200
10.000
1.100
1.000
200
250
300
1 5 0
140
400 500
1 3 0
C
120
1.000
1 1 0
10
20 30
5
4
3.000
B
3
40 50
1 0 0
2
2.000
1
1 0 0 200
A
0
*- MECHANICAL ADJUST (INFINITE).
+- ON indicator.
,- HIGH VOLTAGE indicator.
-- Key board RANGE (A, B, C & CX10).
.- BATTERY CHARGER indicator.
/- BATTERY CHECK key.
0- ON/OFF switch.
1- START key.
2- STOP key.
18
"
!
,
.
-
2
1
/
+
0
Capítulos
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