Siemens SIPROTEC 7SK80 Manual page 140

Functions
2.7 Motor Protection (Motor Starting Protection 48, Motor Restart Inhibit 66, Load Jam Protection)
Addr. Parameter
4302 IStart/IMOTnom
4303 T START MAX
4304 T Equal
4305 I MOTOR NOMINAL
4306 MAX.WARM STARTS
4307 #COLD-#WARM
4308 Kτ at STOP
4309 Kτ at RUNNING
4310 T MIN. INHIBIT
4311 ROTOR OVERLOAD
4401 Load Jam Prot.
4402 Load Jam I>
4403 TRIP DELAY
4404 I Alarm
4405 ALARM DELAY
4406 T Start Blk.
140
C Setting Options
1.10 .. 10.00
1 .. 320 sec
0.0 .. 320.0 min
1A 0.20 .. 1.20 A
5A 1.00 .. 6.00 A
1 .. 4
1 .. 2
0.2 .. 100.0
0.2 .. 100.0
0.2 .. 120.0 min
ON
OFF
Alarm Only
OFF
ON
Alarm Only
1A 0.50 .. 12.00 A
5A 2.50 .. 60.00 A
0.00 .. 600.00 sec
1A 0.50 .. 12.00 A
5A 2.50 .. 60.00 A
0.00 .. 600.00 sec
0.00 .. 600.00 sec
Default Setting
4.90 I Start / I Motor nominal
10 sec Maximum Permissible
Starting Time
1.0 min Temperature Equalizaton
Time
1.00 A Rated Motor Current
5.00 A
2 Maximum Number of
Warm Starts
1 Number of Cold Starts -
Warm Starts
5.0 Extension of Time Con-
stant at Stop
2.0 Extension of Time Con-
stant at Running
6.0 min Minimum Restart Inhibit
Time
ON Rotor Overload Protection
OFF Load Jam Protection
2.00 A Load Jam Tripping
Threshold
10.00 A
1.00 sec Load Jam Trip Delay
1.80 A Load Jam Alarm Thresh-
old
9.00 A
1.00 sec Load Jam Alarm Delay
10.00 sec Load Jam Blocking after
motor start
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
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