MI 3152(H) EurotestXC (2,5 kV)
The prospective short-circuit currents I
follows:
(−)
=
( − ) ℎ
(−)
=
(−)
(−)
=
2
( − ) ℎ
(−)
=
2
(−)
×
(−)
=
3
√ 3
×
(−)
=
3
√ 3
, I
Min
Min2p
where
where
where
where
2
where
( − ) ℎ
2
where
(−)
, I
and I
, I
Min3p
Max
Max2p
= √ (1.5 ×
( − ) ℎ
0.95;
( − )
= {
1.00; ℎ
2
= √
+
(−)
(−)
1.05;
( − )
= {
1.10; ℎ
= √ (1.5 ×
( − ) ℎ
0.95;
( − )
= {
1.00; ℎ
2
= √
+
(−)
(−)
1.05;
( − )
= {
1.10; ℎ
= √ (1.5 ×
( − ) ℎ
0.95;
( − )
= {
1.00; ℎ
2
= √
+
(−)
(−)
1.05;
( − )
= {
1.10; ℎ
121
Tests and measurements
, I
are calculated as
Max3p
2
2
)
+
(−)
(−)
= 230 ± 10 %
2
(−)
= 230 ± 10 %
2
2
)
+
(−)
(−)
= 400 ± 10 %
2
(−)
= 400 ± 10 %
2
2
)
+
(−)
(−)
= 400 ± 10 %
2
(−)
= 400 ± 10 %