BENNING IT 115
Device description
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5.3 Low-impedance resistance / continuity test
The measurement of the low-impedance resistance / continuity test is intended for testing the
protective conductor, earthing conductor and equipotential bonding conductor connections of an
electrical installation.
Two sub-functions are available:
R LOWΩ
– resistance measurement in compliance with EN 61557-4 with a testing
current of 200 mA and polarity reversal
CONTINUITY
– continuous continuity test with a reduced testing current of 7 mA.
Key function as described in chapter
4.2 Function selector switch
Figure 5
.8
: Low-impedance
resistance RLOW Ω with a testing
current of 200 mA
Testing parameters
Test
Sub-function
[
R LOWΩ
,
CONTINUITY
]
Limiting value Maximum resistance
[without limits (---), 0.1 Ω ÷ 20.0 Ω]
Additional testing parameter for continuity test sub-function:
Buzzer
ON (sounds if the resistance is lower than the limiting value set) or OFF
5.3.1 Low-impedance resistance with a testing current of 200 mA
The resistance measurement is performed with automatic polarity reversal of the testing
voltage.
Connection plan
Figure 5
.
9:
Connection of the three-wire test cable and the
optional 40 m measuring line BENNING TA 5 (044039)