Functions
2.13 Startup Overcurrent Protection (ANSI 51)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
101
Figure 2-29 Operating range and possible pickup threshold of short-circuit protection functions
2.13.3 Settings
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding second-
ary nominal current of the current transformer.
2.13.4 Information List
Addr. Parameter C Setting Options Default Setting Comments
1801 O/C STARTUP OFF
ON
Block relay
OFF Startup O/C protection
1802 STARTUP I> 5A 0.50 .. 100.00 A 6.50 A I> Pickup
1A 0.10 .. 20.00 A 1.30 A
1803 STARTUP T I> 0.00 .. 60.00 sec; ∞ 0.50 sec T I> Time Delay
No. Information Type of In-
formation
Comments
5571 >BLOCK O/C St SP >BLOCK startup O/C protection
5572 O/C Start OFF OUT Startup O/C protection is switched OFF
5573 O/C Start BLK OUT Startup O/C protection is BLOCKED
5574 O/C Start ACT OUT Startup O/C protection is ACTIVE
5575 O/C Start L1 PU OUT Startup O/C phase L1 picked up
5576 O/C Start L2 PU OUT Startup O/C phase L2 picked up
5577 O/C Start L3 PU OUT Startup O/C phase L3 picked up
5578 O/C Start TRIP OUT Startup O/C protection TRIP
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