BENNING IT 130 Technical data
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8.6 Earthing resistance
Measuring range according to EN61557-5: 2,00 Ω÷ 1999 Ω
Measuring range (Ω
ΩΩ
Ω) Resolution (Ω
ΩΩ
Ω)
Accuracy
0.00 ÷ 19.99
0.01
20.0 ÷ 199.9
0.1
200 ÷ 9999
1
±(5 % of the measured value + 5 digits)
Maximum auxiliary earth electrode resistance R
C
...100×R
E
or 50 kΩ (the lower value shall apply)
Maximum probe resistance R
P
................................100×R
E
or 50 kΩ (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 Ω, maximum)
Automatic measurement of auxiliary earth electrode resistance and probe resistance.
Automatic monitoring of interference voltage.
8.7 TRMS voltage, frequency and phase sequence
8.7.1 TRMS voltage (AC/DC)
Measuring range (V) Resolution (V) Accuracy
0 ÷ 550
1
± (2 % of the measured value + 2 digits)
Measuring method................................. true r.m.s. value (TRMS)
Frequency range ................................... 0 Hz, 14 Hz ÷ 500 Hz
8.7.2 Voltage of the connection monitor
Measuring range (V) Resolution (V) Accuracy
10 ÷ 550
1
±(2 % of the measured value + 2 digits)
Voltage range ........................................ 10 V ÷ 550 V
8.7.4 Phase sequence (rotary field)
Voltage range ........................................ 100 V
AC
÷ 550 V
AC
Frequency range ................................... 14 Hz ÷ 500 Hz
Result displayed ................................... 1.2.3 or 3.2.1
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