Siemens Siprotec 7UM62 Manual page 35

Table 2-2 Allocation of Device Inputs to Protection Functions
Protection Function
Definite-time I>; I>> /non-
directional
Definite-Time I>>/directional
Inverse-Time Overcurrent
Protection
Thermal Overload Protection
Negative Sequence Protection
Startup Overcurrent Protection
Differential Protection
Earth Fault Differential
Protection
Underexcitation (Loss-of-Field)
Protection
Reverse Power Protection
Forward Active Power
Supervision
7UM62 Manual
C53000-G1176-C149-3
Parameter 0104 FAULT VALUE is used to specify whether the oscillographic fault
recording should record Instantaneous values or RMS values. If RMS values
are recorded, the available recording time increases by the factor 16.
For some protective functions you can also choose the measuring inputs of the relay
to which they will be allocated (side 1 or side 2); for other functions the allocation is
fixed (see Table 2-2).
For example, address 0112 O/C PROT. I> allows such a choice for the I> stage of
the overcurrent protection (= Side 1, Side 2 or Disabled).
For the high-current stage I>> of the overcurrent protection, address 0113 O/C
PROT. I>> allows non-directional operation for side 1/side 2 or directional operation
for side 1/side2. By setting Disabled, this overcurrent stage can be excluded
altogether. For the inverse time overcurrent protection set in address 0114 O/C
PROT. Ip, different sets of inverse characteristics are available, depending on the
version ordered; they are either according to IEC or according to ANSI. This function,
too, can be allocated to either side 1 or side 2 (= with IEC-characteristic on
side 1, with ANSI-characteristic on side 1, with IEC-
characteristic on side 2, with ANSI-characteristic on side 2).
Inverse time overcurrent protection can be excluded altogether by setting Disabled.
Table 2-2 shows the allocation of device inputs to the protection functions. The
interdependencies shown here must be kept in mind when configuring the plant. This
concerns the UE input, the two sensitive current inputs IEE1 and IEE2 as well as the
3 measuring transducer inputs (TD). Where the UE input is used e.g. by the stator
earth fault protection functions, it is no longer available for rotor earth fault protection
(R, fn) (see also Table 2-3). The same restrictions are true for measuring transducer
inputs, which can only be used by one protection function at a time. Where the TDs
are not used by any protection function, they are available for general processing by
the measured value blocks in CFC.
ANSI
U
L1
U
Fixed
ANSI 50
Fixed
ANSI 51, Fixed
67
ANSI 49
ANSI 46
ANSI 51
ANSI 87
ANSI U0 calcu-
87GN/TN lated
ANSI 40 Fixed
ANSI 32R Fixed
ANSI 32F Fixed
Side 1
; U ; I ; I ; I
L2 L1S1 L2S1 EE1
I
L3 L3S1
Selectable -
Selectable -
Selectable -
- - -
- - -
- - -
- Fixed -
Selectable -
- -
- -
- -
Functional Scope
Side 2
U I ; I ; I
E L1S2 L2S2 EE2
I
L3S2
- Selectable -
- Selectable -
- Selectable -
- Fixed -
- Fixed -
- Fixed -
- Fixed -
- Selectable Fixed
- Fixed -
- Fixed -
- Fixed -
TD
-
-
-
TD2
-
-
-
-
TD3
-
-
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