WAGO I/O System 750 XTR
Table of Contents 25
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
3.6.3
Measurement Inputs
Table 9: Technical Data – Measurement Inputs
Number of inputs
for sensors in medium voltage
networks
6 (3 voltage measurement inputs and
3 current measurement inputs with
common reference potential)
Voltage measurement inputs (Lx - N)
Nominal voltage U
N
3.25 V / √3 (=
1.876 V)
Upper measurement range
3.92 V / √3 (= 2.262 V)
Input resistance
200.3 kΩ ± 1%
Permitted signal voltage 90 VAC max., continuous
Current measurement inputs (Ix - N)
Nominal voltage U
N
225 mV
Upper measurement range 540.75 mV
Input resistance
20.8 kΩ ± 1%
Permitted signal voltage 90 V max., continuous
1)
Frequency range
Mains frequency 45 Hz … 65 Hz
Harmonic analysis 45 … 2665 Hz (41st harmonic)
Limit frequency of the sensor inputs 8.6 kHz
Signal form Sinusoidal signals (taking the cutoff
frequency into account)
Table 10: Technical Data – Suitable Voltage Sensors
Nominal voltage U
N
20 kV / √3
Voltage factor
1.2 × U
N
(continuous) and
1.9 × U
N
(for 8 h)
Secondary rated voltage
3.25
V / √3
Standard
IEC 61869-7 (and earlier)
Table 11: Technical Data – Suitable Current Sensors
Primary current
300 A
Overload
25 kA / 1 s
Output signal
225 mV
Standard
IEC 61869-8 (and earlier)
1
With 3-
phase overload at the voltage or current measurement inputs and TU ≤ 25°C