Siemens SIPROTEC 7SJ81 - Limit Values of Inputs and Outputs; Current Inputs Specifications; Voltage Inputs Specifications; Influence of Temperature on Accuracy

33SIPROTEC 7SJ81/7SK81 V4.70, Product Information
E50417-K1150-C462-A2, Edition 02.2012
10 Limit Values of Inputs and Outputs
Current Inputs
Measuring range V
eff
0 V to 17.7 V
Measuring accuracy 0.5 % of the measured value or 0.5 mV
Protection accuracy 2 % of the measured value or 2 mV
Voltage Inputs
Secondary rated voltage V
N
3V to 17V
Measuring range V
eff
0V bis 50 V
Measuring accuracy 0.5 % of the measured value or 5 mV
Protection accuracy 3 % of the measured value or 50 mV
Influence of temperature on accuracy
Temperarture in range -5 °C (41 °F) to +55 °C (131 °F)
Currents 0.15 %/10 K
Voltage 0.2 %/10 K
Power Supply
Direct Voltage
Voltage Supply via Integrated Converter:
Permissible AC Ripple Voltage,
peak to peak ≤15 % of the Power Supply Voltage
Alternating Voltage
Voltage Supply via Integrated Converter:
Rated Power Supply
Direct Voltage
24 V to 48 V 60 V to 250 V
Permissible Voltage Ranges 19 V to 58 V 48 V to 300 V
Rated Power Supply
Alternating Voltage
115 V 230 V
Permissible Voltage Ranges 92 V to 132 V 184 V to 265 V