Functions
2.8 Definite-Time Overcurrent Protection (I>, ANSI 50/51) with Undervoltage Seal-In
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
68
2.8.3 Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Additional Settings.
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding second-
ary nominal current of the current transformer.
2.8.4 Information List
Addr. Parameter C Setting Options Default Setting Comments
1201 O/C I> OFF
ON
Block relay
OFF Overcurrent Time Protec-
tion I>
1202 I> 5A 0.25 .. 100.00 A 6.75 A I> Pickup
1A 0.05 .. 20.00 A 1.35 A
1203 T I> 0.00 .. 60.00 sec; ∞ 3.00 sec T I> Time Delay
1204 U< SEAL-IN ON
OFF
OFF State of Undervoltage
Seal-in
1205 U< 10.0 .. 125.0 V 80.0 V Undervoltage Seal-in
Pickup
1206 T-SEAL-IN 0.10 .. 60.00 sec 4.00 sec Duration of Undervoltage
Seal-in
1207A I> DOUT RATIO 0.90 .. 0.99 0.95 I> Drop Out Ratio
No. Information Type of In-
formation
Comments
1722 >BLOCK I> SP >BLOCK I>
1811 I> Fault L1 OUT O/C fault detection stage I> phase L1
1812 I> Fault L2 OUT O/C fault detection stage I> phase L2
1813 I> Fault L3 OUT O/C fault detection stage I> phase L3
1815 I> TRIP OUT O/C I> TRIP
1950 >Useal-inBLK SP >O/C prot. : BLOCK undervoltage seal-in
1965 I> OFF OUT O/C prot. stage I> is switched OFF
1966 I> BLOCKED OUT O/C prot. stage I> is BLOCKED
1967 I> ACTIVE OUT O/C prot. stage I> is ACTIVE
1970 U< seal in OUT O/C prot. undervoltage seal-in
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