Uinj
Rshunt
~
Step-up
Transformer
95 % SEF
1
0
0
%
S
E
F
REX060/SIM module
REG670
5
6
8
3
1
7
9
I
U
Generator
R
N
2
Generator Protection Panel
IEC11000067-2-en.vsd
U>
4
10
IEC11000067 V1 EN
Figure 133: Example installation for stator injection
1 Generator unit consisting of a synchronous generator and a step-up transformer
2 Grounding resistor for the stator winding
3 Neutral point VT which is used as injection point and also to provide galvanic separation between
primary circuit and injection equipment
4 Cable used to inject the square-wave signal into the stator circuit
5 Connection for measurement of injected current. This signal is amplified in REX060 before it is
given to REG670 for evaluation.
6 Cable for measurement of injected voltage at the injection point. This signal is amplified in REX060
before it is given to REG670 for evaluation.
7 Two VT inputs into REG670 which are used to measure injected current and voltage
8 Cable for 95% stator earth-fault protection
9 Separate VT input in REG670 used for 95% stator earth-fault protection
10 Protection for excessive over-voltages posed by generator. REX060 can withstand without
damage maximum voltage of 120V and when used together with REX062 up to 240V.
Section 7 1MRK502052-UEN B
Impedance protection
300
Technical manual
To Next Page
Loading...
