Technical data
Siemens SIP · 2008
12 Motor Protection / 7SK80
12
Technical Data page 1
Technical data
General unit data
Analog current inputs
Rated frequency f
N
50 or 60 Hz (adjustable)
Rated current I
nom
1or5A
Ground current, sensitive I
Ns
w 1.6 · I
nom
linear range
1)
Burden per phase and ground path
at I
nom
=1A
at I
nom
=5A
for sensitive ground fault
detection at 1 A
Approx. 0.05 VA
Approx. 0.3 VA
Approx. 0.05 VA
Load capacity current path
Thermal (rms)
Dynamic (peak value)
500 A for 1 s
150 A for 10 s
20 A continuous
1250 A (half-cycle)
Loadability input for sensitive
ground-fault detection I
Ns
1)
Thermal (rms)
Dynamic (peak value)
300 A for 1 s
100 A for 10 s
15 A continuous
750 A (half-cycle)
Analog voltage inputs
Rated voltage
Measuring range
34 – 220 V
0 to 200 V
Burden at 100 V Approx. 0.005 VA
Overload capacity in voltage path
Thermal (rms) 230 V continuous
Auxiliary voltage
DC voltage
Voltage supply via an integrated converter
Rated auxiliary voltage V
aux
DC 24 to 48 V 60 to 250 V
Permissible voltage ranges DC 19 to 60 V 48 to 300 V
AC ripple voltage, peak-to-peak,
IEC 60255-11
≤ 15 % of the auxiliary
voltage
Power input
Quiescent
Energized
Approx. 5 W
Approx. 12 W
Bridging time for failure/short-circuit,
IEC 60255-11 (in the quiescent state)
W 50 ms at V W 110VDC
W 10 ms at V <110VDC
AC voltage
Voltage supply via an integrated converter
Rated auxiliary voltage V
aux
AC 115 V 230 V
Permissible voltage ranges AC 92 to 132 V 184 to 265 V
Powerinput(at115VAC/230VAC)
Quiescent
Energized
Approx. 5 VA
Approx. 12 VA
Bridging time for failure/short-circuit
(in the quiescent state)
W 10 ms at V = 115/230 V AC
1) Only in models with input for sensitive ground-fault detection
(see ordering data)
Binary inputs
Type 7SK801/803/805/806 7SK802/804
Number (marshallable) 3 7
Ratedvoltagerange 24to250VDC
Current input, energized
(independent of the control voltage)
Approx. 0.4 mA
Secured switching thresholds (adjustable)
for rated voltages
24 to 125 V DC
V high>19VDC
V low<10VDC
for rated voltages
110 to 250 V DC
V high>88VDC
V low<44VDC
for rated voltages
220 and 250 V DC
V high>176VDC
V low<88VDC
Maximum permissible voltage 300 V DC
Input interference suppression 220 V DC across 220 nF at a recovery
time between two switching opera-
tions W 60 ms
Output relay
Type 7SK801/803/805/806 7SK802/804
NO contact 3 6
NO/NC selectable 2 (+ 1 live contact 2 (+ 1 live contact
not allocatable) not allocatable)
Switching capability MAKE
Switching capability BREAK
Max. 1000 W/VA
40 W or 30 VA at L/R ≤ 40 ms
Switching voltage 250 V DC/AC
Admissible current per contact
(continuous)
5A
Permissible current per contact
(close and hold)
30 A for 1 s (NO contact)
Electrical tests
Specification
Standards IEC 60255 (product standard)
ANSI/ IEEE C37.90 see individual
functions
VDE 0435
for more standards see also
individual functions
Insulation tests
Standards IEC 60255-27 and IEC 60870-2-1
High-voltage test (routine test)
All circuits except power supply,
binary inputs, communication in-
terface and time synchronization
interfaces
2.5 kV, 50 Hz
High-voltage test (routine test)
Auxiliary voltage and binary inputs
3.5kVDC
High-voltage test (routine test)
Only isolated communication
interfaces (A and B)
500 V, 50 Hz
Impulse voltage test (type test)
All process circuits (except commu-
nication interfaces) against the inter-
nal electronics
6kV(peakvalue);1.2/50µs;0.5J;
3 positive and 3 negative impulses at
intervals of 1 s