Functions
2.4 Functional Scope
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
45
For the differential protection, address 120 DIFF. PROT. allows to specify the type of protected object
(Generator/Motor or 3 phase transf.); the function can be excluded altogether by setting Disabled.
Out-of-Step Protection (ANSI 78) Fixed – – – Fixed – –
Undervoltage Protection Fixed – – – – – –
Overvoltage Protection Fixed – – – – – –
Frequency Protection Fixed – – – Fixed – –
Overexcitation protection U/f Fixed – – – – – –
Inverse undervoltage protection Fixed – – – – – –
Rate-of-frequency-change protection Fixed – – – – – –
Jump of Voltage Vector Fixed – – – – – –
90 % Stator Earth Fault Protection U0 calculated
if REFP is
used
––Se-
lect-
able
–Fixed–
Sensitive Earth Fault Protection (ANSI
51GN, 64R)
–– –––Select-
able
–
100 % Stator Earth Fault Protection with
3rd Harmonics
Fixed – – Fixed Fixed – –
100 % Stator Earth Fault Protection with
20 Hz Bias Voltage
– – Fixed Fixed – – –
Earth current protection B
(IEE-B)
– – Select-
able
– – Select-
able
–
Interturn Fault Protection – – – Fixed – – –
Rotor Earth Fault Protection REFP – – Fixed Fixed – – –
Sensitive Rotor Earth Fault Protection
with 1 to 3 Hz Square Wave Voltage In-
jection
–– ––––TD1
TD2
Motor starting time supervision – – – – Fixed – –
Restart inibit for motors – – – – Fixed – –
Breaker Failure Protection – Selectable – – Selectable – –
Inadvertent Energization (ANSI 50, 27) Fixed – – – Fixed – –
DC voltage protection – – – – – – TD1
Fuse Failure Monitor Fixed – – – Fixed – –
Trip Circuit Monitor (ANSI 74TC) – – – – – – –
Threshold Supervision Fixed – – – Fixed – –
External Trip Coupling – – – – – – –
Protection function Side 1 Side 2
U
L1
; U
L2
; U
L3
I
L1S1
; I
L2S1
;
I
L3S1
I
ee1
U
E
I
L1S2
; I
L2S2
;
I
L3S2
I
ee2
TD
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