03/ 2020
BENNING IT 105 CH
18
Note on optional accessories:
-
BENNING TA 5 40 m measuring lead with rewinder and wrist strap, for measuring protective conductor
connections (044039).
4. Description of the installation tester
See figure 1a: Front tester panel/ device top
See figure 1b: Function selector switch
See figure 1c: Digital display
The display and operator control elements specified in figure 1a, 1b and 1c are designated as follows:
1
Function selector switch
2
Digital display
, dimensions 95 x 55 mm, with illumination
3
Function keys
F1 to F4
4
TEST key
5
Black measuring lead jack L/L1
6
Green measuring lead jack PE/L2
7
Blue measuring lead jack N/L3
Function selector switch
A
Voltage (V), Frequency (Hz), rotary field
B
Insulation resistance (R
ISO
)
with 1000 V testing voltage
C
Insulation resistance (R
ISO
)
with 500 V testing voltage
D
Insulation resistance (R
ISO
)
with 250 V testing voltage
E
Continuity test (R
LOW
)
with 200 mA testing current
F
OFF
G
Loop/line impedance (Z
S
/Z
I
HIGH CURRENT)
with high testing current and calculation of the short-
circuit/fault current (PSC/PFC)
H
Loop/line impedance (Z
S
/Z
I
NO-TRIP)
without tripping of RCDs (residual current protection devices)
and calculation of the short-circuit/fault current (PSC/PFC)
I
RCD tripping time
(AUTO)
J
RCD tripping time
with ½ x IΔN (RCD
t
)
K
RCD tripping time
with 1 x IΔN (RCD
t
)
L
RCD tripping time
with 5 x IΔN (RCD
t
)
M
RCD tripping current
with ramp test (RCD
I
)
Digital display
A
Symbols of the function key F1
. Repeatedly press the F1 key to select the options available in the
selected test function.
B
Symbols of the function key F2
. Repeatedly press the F2 key to select the options available in the
selected test function.
C
Symbols of the function key F3
. Repeatedly press the F3 key to select the options available in the
selected test function.
D
Symbols of the function key F4
. Repeatedly press the F4 key to select the options available in the
selected test function.
E
Progress indicator of the loop impedance (Z
S
, NO-TRIP)
F
Symbols of the selected RCD test function
G
RCD status.
Provides information about RCD tripping.
H
Phase sequence indicator
I
Battery symbol
, status of the remaining battery capacity
J
Sub-display
for measuring results
K
Main display
for measuring results
L
Mains voltage indicator.
Confirms the correct voltage potentials between external conductor and
earth (L-PE), external conductor and neutral conductor (L-N) as well as neutral conductor and earth
(N-PE) for RCD measurement and loop/line impedance measurement.
Indication for correct mains voltage:
Note:
If the mains voltage indicator flashes, check the measuring leads for correct connection or the system
part for correct voltage potentials:
