Siemens siprotec 7SA522, User Manual

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Technical Data
10-2
7SA522 Manual
C53000-G1176-C119-2
10.1 General Device Data
10.1.1 Analog Inputs
Nominal frequency f
N
50 Hz or 60 Hz(adjustable)
Current Inputs Nominal current I
N
1 A or 5 A
Power consumption per phase and earth path
– at I
N
= 1 A approx. 0.05 VA
– at I
N
= 5 A approx. 0.3 VA
– Sensitive earth fault detection at 1 A approx. 0.05 VA
Current overload capability per input
– thermal (rms)
500 A for 1 s
150 A for 10 s
20 A continuous
– dynamic (pulse) 1250 A (half cycle)
Current overload capability for sensitive earth current input
– thermal (rms)
300 A for 1 s
100 A for 10 s
15 A continuous
– dynamic (pulse) 750 A (half cycle)
Voltage Inputs Nominal voltage U
N
80 V to 125 V (adjustable)
Power consumption per phase at 100 V
≤
0.1 VA
Current overload capability per phase
– thermal (rms)
170 V continuous
10.1.2 Power Supply
Direct Voltage Voltage supply via integrated DC/DC converter:
Permissible AC Ripple Voltage,
peak to peak
≤
15 % of the nominal power supply voltage
Power consumption
– quiescent
approx. 5 W
– energized with 7SA522*–*A/E/J approx. 12 W
with 7SA522*–*C/G/L approx. 15 W
with 7SA522*–*D/H/M approx. 18 W
Nominal power supply direct voltage U
NDC
24/48 VDC 60/110/125 VDC
Permissible voltage ranges 19 to 58 VDC 48 to 150 VDC
Nominal power supply direct voltage U
NDC
110/125/220/250 VDC 220/250 VDC
Permissible voltage ranges 88 to 300 VDC 176 to 300 VDC