Technical data

Siemens SIP · 2008
12 Motor Protection / 7SK80
12
Technical Data page 5
Technical data
Cold-load pickup/dynamic setting change
Controllable functions Time-overcurrent protection
(separated acc. to phases and ground)
Initiation criteria Current criterion “BkrClosed/MIN”
CB position via aux. contacts,
binary input, auto-reclosure ready
Time control 3 time elements
(T
CB Open
, T
Active
, T
Stop
)
Current control Current threshold “BkrClosed/MIN”
(reset on dropping below threshold;
monitoring with timer)
Setting ranges
Current control
Time until changeover to
dynamic setting T
CB Open
Period dynamic settings are
effective after a reclosure T
Active
Fast reset time T
Stop
0.2 to 5 A
1)
(in steps of 0.01 A)
0 to 21600 s (= 6 h) (in steps of 1 s)
1 to 21600 s (= 6 h) (in steps of 1 s)
1to600s(=10min.)or∞
(fast reset inactive) (in steps of 1 s)
Dynamic settings or pickup currents
and time delays or time multipliers
Adjustable within the same ranges
and with the same steps (increments)
as the directional and non-directional
time-overcurrent protection
Voltage protection (ANSI 27, 59)
Undervoltages 27-1, 27-2 (V<, V<<)
Measured quantity used with
Three-phase connection
Single-phase connection
Positive-sequence system of the voltages
Lowest phase-to-phase voltage
Lowest phase-to-ground voltage
Connected single-phase-to-ground
voltage
Setting ranges
Connection of phase-to-ground
voltage
Connection of phase-to-phase
voltage
Connection of single phase
Dropout ratio
2)
r
for 27-1, 27-2 (V<, V<<)
10 to 120 V (in steps of 1 V)
10 to 120 V (in steps of 1 V)
10 to 120 V (in steps of 1 V)
1.01 to 3 (in steps of 0.01)
Dropout threshold for r · 27-1 (V<)
r · 27-2 (V<<)
Max. 130 V for phase-to-phase voltage
Max. 225 V for phase-to-ground volt.
Hysteresis Min. 0.6 V
Time delays T27-1(V<), T27-2 (V<<)
Current criterion “BkrClosed/MIN”
0to100s(instepsof0.01s)
or ∞ (disabled)
0.02 to 5 A
1)
(in steps of 0.01 A)
Overvoltages 59-1, 59-2 (V>, V>>)
Measured quantity used with
Three-phase connection
Single-phase connection
Positive-sequence system of the voltages
Negative-sequence system of the voltages
Highest phase-to-phase voltage
Highest phase-to-ground voltage
Connected single-phase-to-ground
voltage
Setting ranges
Connection of phase-to-ground
voltage:
Evaluation of phase-to-ground
voltages
Evaluation of phase-to-phase
voltages
Evaluation of positive-sequence
system
Evaluation of negative-sequence
system
Connection of phase-to-phase
voltages:
Evaluation of phase-to-phase
voltage
Evaluation of positive-sequence
system
Evaluation of negative-sequence
system
Connection single phase
Dropout ratio r
for 59-1, 59-2 (V>, V>>)
20 to 150 V (in steps of 1 V)
20 to 260 V (in steps of 1 V)
20 to 150 V (in steps of 1 V)
2to150V(instepsof1V)
20 to 150 V (in steps of 1 V)
20 to 150 V (in steps of 1 V)
2to150V(instepsof1V)
20 to 150 V (in steps of 1 V)
0.90 to 0.99 (in steps of 0.01 V)
Dropout threshold for r · 59-1 (V>)
r ·59-2(V>>)
Max. 150 V for phase-to-phase voltage
Max. 260 V for phase-to-ground volt.
Hysteresis Min. 0.6 V
Time delay T59-1, T59-2 (V>, V>>) 0to100s(instepsof0.01s)
or ∞ (disabled)
Times
Pickup times
Undervoltage 27-1, 27-2 (V<, V<<)
27-1 V
1
, 27-2 V
1
Overvoltage 59-1, 59-2 (V>, V>>)
Overvoltage 59-1 V
1
, 59-2 V
1
,
59-1 V
2
, 59-2 V
2
Dropout times
Undervoltage 27-1, 27-2 (V<, V<<)
27-1 V
1
, 27-2 V
1
Overvoltage 59-1, 59-2 (V>, V>>)
Overvoltage 59-1 V
1
, 59-2 V
1
,
59-1 V
2
, 59-2 V
2
Tolerances
Pickup voltage limits
Delay times T
Approx. 50 ms
Approx. 50 ms
Approx. 60 ms
Approx. 50 ms
Approx. 50 ms
Approx. 60 ms
3 % of setting value or 1 V
1%ofsettingvalueor10ms
1) At I
nom
= 1 A, all limits divided by 5. 2) r = V
dropout
/V
pickup
.