2.1 General
54
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
2.1.6
Power System Data 2
2.1.6.1
Description
The general protection data (
P.System Data 2
) includes settings associated with
all functions rather than a specific protection or monitoring function. In contrast to the
P.System Data 1
as discussed before, they can be changed over with the setting
groups.
Applications
If the primary reference voltage and the primary reference current of the protected
object are set, the device is able to calculate and output the percentage operational
measured values.
For protection of motors the motor starting detection represents an important feature.
Exceeding a configured current value serves as a criterion.
2.1.6.2
Setting Notes
Definition of
Nominal Rated
Values
At addresses
1101
FullScaleVolt.
and
1102
FullScaleCurr.
, the primary ref-
erence voltage (phase-to-phase) and reference current (phase) of the protected
equipment is entered (e.g. motors). If these reference values match the primary VT
and CT rating, they correspond to the settings in address
202
and
204
(Subsection
2.1.3.2). They are generally used to show values referenced to full scale.
Ground Impedance
Ratios (only for
Fault Location)
The ground impedance ratio is only relevant for line fault location. At address
1103
,
resistance ratio
RG/RL Ratio
is entered, and at address
1104
, the reactance ratio
XG/XL Ratio
is entered. They are calculated separately, and do not correspond to
the real and imaginary components of Z
0
/Z
1
. Therefore, no complex calculations are
necessary! The ratios are obtained from system data using the following formula:
Where
R
0
– Zero sequence resistance of the line
X
0
– Zero sequence reactance of the line
R
1
– Positive sequence resistance of the line
X
1
– Positive sequence reactance of the line
These values may either apply to the entire line length or be based on a per unit of line
length, as the quotients are independent of length.
Содержание siprotec SJ62
Страница 3: ...3 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 9: ...Preface 9 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 21: ...Contents 19 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 35: ...1 Introduction 33 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 365: ...2 Functions 363 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 443: ...3 Mounting and Commissioning 441 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 529: ...4 Technical Data 527 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 699: ...A Appendix 697 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 701: ...Literature 699 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 714: ...Index 712 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 715: ...Index 713 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...