Technical Data - Siemens 7SN71 Instruction Manual

Transient earth-fault relay 7SN71
4

Technical Data

Table 4.1 Technical Data
Measuring circuit
Auxiliary voltage
Current path
Earth-fault direction signal
Continuous earth-fault signal
Version
Standards
Siemens AG March 1997
Instruction Manual
Rated voltage V
N
Rated current I
N
Rated frequency f
N
Thermal rating
in current path, continuous
in voltage path, continuous
1 s (1 A)
1 s (5 A)
10 s
Rated auxiliary voltage V
AUX
Power consumption
100 V
110 V
220 V
Input impedance Z at 50 Hz and 1 x I
I = 1 A, terminals 2B1/1B1
N
I = 5 A, terminals 1B2/1B1
N
Number of relays, forward or reverse direction
Switching capacity make/break
Switching voltage
Switching current
Number of relays, continous earth fault
Swtiching capacity
Switching voltage
Permissible switching current
Housing, dimensions
Connections
Weight
VDE 0435, Part 303 and IEC 255-5 or IEC 255-6
Technical Data
Order No.: E50410-A0007-U501-A1-7691
100/110 V AC
1 or 5 A
50 Hz
120 V AC
4 x I
N
100 A
300 A
30 x I
N
24, 48, 60 V DC
110/125 V DC
220/250 V DC
100 to 110/230 V AC, 50 Hz
non-energized
approx. 2.5 W
approx. 3.5 W
approx. 4.0 W
N
<0.5 W
<0.2 W
2 NO contacts
20 W / VA
250 V AC/DC
1 A
1 NO contact
make 1 000 W / VA
break 30 W / VA
250 V AC/DC
continuous 5 A
0.5 s 30 A
7XP20 (see chapter. 2)
for current 2 connection modules
for voltage 6 connection modules
approx. 4 kg
4
energized
approx. 3.5 W
approx. 4.5 W
approx. 5.0 W
4 - 1