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Functions
2.7 Motor Protection (Motor Starting Protection 48, Motor Restart Inhibit 66, Load Jam Protection)
2.7.4
Motor (Motor Starting Protection 48, Motor Restart Inhibit 66, Load Jam
Protection)
Functions relevant to Motor Protection and Restart Inhibit for Motors and Load Jam Protection are described
in the aforegoing two sections and contain information concerning configuration.
2.7.4.1 Settings
The table indicates region-specific default settings. Column C (configuration) indicates the corresponding sec-
ondary nominal current of the current transformer.
Addr.
Parameter
4101
FCT 48
4102
STARTUP CURRENT
4103
STARTUP TIME
4104
LOCK ROTOR TIME
4105
STARTUP T WARM
4106
TEMP.COLD MOTOR
4301
FCT 66
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
148
C
Setting Options
OFF
ON
1A
0.50 .. 16.00 A
5A
2.50 .. 80.00 A
1.0 .. 180.0 sec
0.5 .. 180.0 sec; ∞
0.5 .. 180.0 sec; ∞
0 .. 80 %; ∞
OFF
ON
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
Default Setting
OFF
48 Startup Time Supervi-
sion for Motors
5.00 A
Startup Current
25.00 A
10.0 sec
Startup Time
2.0 sec
Permissible Locked Rotor
Time
10.0 sec
Startup Time for warm
motor
25 %
Temperature limit for cold
motor
OFF
66 Startup Counter for
Motors
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
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
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