Benning IT 115 - Line Impedance and Prospective Short-Circuit Current; Voltage Drop; Earthing Resistance

BENNING IT 115 Technical data
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7.5 Line impedance and prospective short-circuit current / voltage drop
Line impedance
Measuring range according to EN 61557-3: 0.25   9.99 k
Measuring range (

) Resolution (

)
Accuracy
0.00  9.99
0.01
 (5 % of the measured value + 5
digits)
10.0  99.9
0.1
100  999
1
10 % of the measured value
1.00 k  9.99 k
10
Prospective short-circuit current (calculated value)
Measuring range (A)
Resolution (A)
Accuracy
0.00  0.99
0.01
Please observe the accuracy of the
line impedance measurement.
1.0  99.9
0.1
100  999
1
1.00 k  99.99 k
10
100 k  199 k
1000
Testing current (at 230 V) ...................... 6.5 A (10 ms)
Nominal voltage range ........................... 93 V  134 V (45 Hz  65 Hz)
185 V  266 V (45 Hz  65 Hz)
321 V  485 V (45 Hz  65 Hz)
Voltage drop (calculated value)
Measuring range (%)
Resolution (%)
Accuracy
0.0  99.9
0.1
Please observe the accuracy of the line
impedance measurement*.
Z
REF
measuring range ............................ 0.00 Ω  20.0 Ω
* Please refer to chapter 5.6.2 Voltage drop for information on how to calculate the voltage drop.
7.6 Earthing resistance
Measuring range according to EN61557-5: 2,00  1999 
Measuring range (

) Resolution (

)
Accuracy
0.00  19.99
0.01
(5 % of the measured value + 5 digits) 20.0  199.9
0.1
200  9999
1
Maximum auxiliary earth electrode resistance R
C
...100R
E
or 50 k (the lower value shall apply)
Maximum probe resistance R
P
................................100R
E
or 50 k (the lower value shall apply)
Additional error at R
Cmax
or R
Pmax
.............................(10 % of the measured value + 10 digits)
Additional error at interference voltage of 3 V (50 Hz) (5 % of the measured value + 10 digits)
Open-circuit voltage ................................................< 30 VAC
Short-circuit current ................................................<30 mA
Frequency of testing voltage ...................................125 Hz, sinusoidal
Interference voltage indicating threshold .................1 V (< 50 , maximum)
Automatic measurement of auxiliary earth electrode resistance and probe resistance.
Automatic monitoring of interference voltage.