ABB REG316 4 Series Operating Instructions Manual page 167

REG 316*4 1MRB520049-Uen / Rev. F
Example 3
U = 12 kV; I = 10 A; grounding transformer specified accord-
GN C
ing to the rated voltage of the generator.
U = U = 12 kV
1n GN
U = 230 V
2n
I = I = I = 10 A
1n Emax C
I = I = I
2n e Emax
U
U
2
12000
æ
=
R ç
è
e
12000
´
3 10
= 12000 ´ 10 ³ 120 kVA
S
n
Specification:
1 grounding transformer
1 resistor
1 interposing v.t.
12000
= =
1 n 10 522
230
n
2
230
ö
÷ = W
0 254 .
ø
120 kVA;
12000/230 V;
0.254 W ;
10 VA;
ABB Switzerland Ltd
A
10 s; 50 Hz
10/522 A
522 A; 10 s
50 Hz; 230/100 V
3-129