Differential Protection Pos. 14
Differential protection + Basic elements
Differential protection transformer, generator, motor, busbar
Overload protection in accordance with IEC 60354 for a winding
2)
Lock out
Time overcurrent protection, phases: Ι>, Ι>>, Ιp (inrush restraint)
Time overcurrent protection 3Ι0: 3Ι0>, 3Ι0>>, 3Ι0p (inrush restraint)
Time overcurrent protection Earth: ΙE>, ΙE>>, ΙEp (inrush restraint)
A
Differential Protection + Basic Functions + Additional Functions
1)
Restricted earth fault protection
Additional Functions1) Restricted earth fault protection Definite-time, single-phase, e.g. high-impedance
earth fault protection (87G without resistor or varistor)
3)
or tank leakage protection,
Unbalanced load protection
Breaker failure protection
Trip circuit supervision
B
16.7 Hz, Railway Protection Transformer + Generator
4)
C
16,7 Hz, Railway Protection Transformer + Generator + Busbar
4)
D
1)
Varistor and series resistor are accessories
2)
external RTD box required
3)
external resistor and varistor required
4)
Only in connection with position 16 = 1 or 3
Additional Voltage Function Pos. 15
Without voltage function A
With overexcitation (Volt/Hertz) protection and voltage/power measurement (only available for 7UT633) B
Over- and undervoltage protection, frequency protection, load direction protection, fuse-failure monitor (only
available for 7UT633)
C
Additional function general Pos. 16
Without 0
Multiple protection function
1)
1
Unassigned configurable protection blocks 2
Multiple protection function + unassigned configurable protection blocks
1)
3
1)
Only if already available at position 14
Ordering Information and Accessories
A.3 1.1.3 Differential Protection 7UT633 and 7UT635 for 3 to 5 measuring locations
SIPROTEC 4, 7UT6x, Manual 479
C53000-G1176-C230-5, Edition 09.2016
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