ABB REG316 4 Series - Page 283

REG 316*4 1MRB520049-Uen / Rev. F ABB Switzerland Ltd
3-245
Condition 3: R' 4.5 1 4.5
Es
³´=WW
Condition 4:
R' 700
3
600 V
3
12 kV
3
5
Es
2
³´
´
æ
è
ç
ç
ç
ç
ö
ø
÷
÷
÷
÷
=WW
.25
In order to fulfil conditions 1, 3 and 4: R' 10
Es
= .0 W
Determining the v.t.:
Assumed:
N'
N'
12 kV
3 100 V
3
600 V
3
12 kV
3
3 600 V
100 V
6
12
11
=
´
´
´
=
´
= .0
Condition 5 is fulfilled because:
1.2 n
N'
N'
0.8 n = 6.6 6 4
12
11
´³ ³ ´ ³ ³..04
where
n
12 kV
3 100 V
3
600 V
3
12 kV
3
10
10 1
0.91 5=
´
´
´
´
+
=´ =
W
WW
65.
The following values are permissible:
R' = 1
Ps
W
R' = 10
Es
W
N' N' 3 600 V 100 V
12 11
=´
Calculation of the settings REs and MTR:
R10
12 kV
3
3 600 V
3
1.33 k
Es
2
=´
´
æ
è
ç
ç
ç
ç
ö
ø
÷
÷
÷
÷
=WW
MTR
N'
N'
110 V
6V
103
12
11
=´ =
.
.
4
1
for an injection voltage Uis = 6.4 V.