Settings Of The Overexcitation Protection; Information From The Overexcitation Protection - Siemens Siprotec 7UM62 Manual

Voltage
Transformer
Adaptation

2.22.2.1 Settings of the Overexcitation Protection

Addr. Setting Title
4301 OVEREXC. PROT.
4302 U/f >
4303 T U/f >
4304 U/f >>
4305 T U/f >>
4306 t(U/f=1.05)
4307 t(U/f=1.10)
4308 t(U/f=1.15)
4309 t(U/f=1.20)
4310 t(U/f=1.25)
4311 t(U/f=1.30)
4312 t(U/f=1.35)
4313 t(U/f=1.40)
4314 T COOL DOWN

2.22.2.2 Information from the Overexcitation Protection

F.No. Alarm
05353 >U/f BLOCK
05357 >RM th.rep. U/f
05361 U/f> OFF
05362 U/f> BLOCKED
05363 U/f> ACTIVE
05369 RM th.rep. U/f
05367 U/f> warn
05370 U/f> picked up
05373 U/f>> pick.up
05371 U/f>> TRIP
05372 U/f> th.TRIP
7UM62 Manual
C53000-G1176-C149-3
A perhaps existing deviation between the primary nominal voltage of the voltage
transformers and the object to be protected is compensated by means of the internal
correction factor (U
N prim
system parameters 0221 Unom PRIMARY and 0251 UN GEN/MOTOR must have
been entered correctly according to the Section 2.3.
Setting Options
OFF
ON
Block relay for trip com-
mands
1.00..1.20
0.00..60.00 sec; ∞
1.00..1.40
0.00..60.00 sec; ∞
0..20000 sec
0..20000 sec
0..20000 sec
0..20000 sec
0..20000 sec
0..20000 sec
0..20000 sec
0..20000 sec
0..20000 sec
>BLOCK overexcitation protection
>Reset memory of thermal replica U/f
Overexcitation prot. is swiched OFF
Overexcitation prot. is BLOCKED
Overexcitation prot. is ACTIVE
Reset memory of thermal replica U/f
Overexc. prot.: U/f warning stage
Overexc. prot.: U/f> picked up
Overexc. prot.: U/f>> picked up
Overexc. prot.: TRIP of U/f>> stage
Overexc. prot.: TRIP of th. stage
Overexcitation (Volt/Hertz) Protection (ANSI 24)
/U ). As a prerequisite, however, the incoming power
N mach
Default Setting
OFF
1.10
10.00 sec
1.40
1.00 sec
20000 sec
6000 sec
240 sec
60 sec
30 sec
19 sec
13 sec
10 sec
3600 sec
Comments
Comments
Overexcitation Protection (U/f)
U/f > Pickup
T U/f > Time Delay
U/f >> Pickup
T U/f >> Time Delay
U/f = 1.05 Time Delay
U/f = 1.10 Time Delay
U/f = 1.15 Time Delay
U/f = 1.20 Time Delay
U/f = 1.25 Time Delay
U/f = 1.30 Time Delay
U/f = 1.35 Time Delay
U/f = 1.40 Time Delay
Time for Cooling Down
163