Siemens SIPROTEC 7SK80 User Manual

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

Siemens SIPROTEC 7SK80 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SK80
Category	Protection Device
Language	English