MI 3155
Eurotest
XD
Test and measurements
134
Standard prospective fault current I
PSC
is calculated as follows:
𝐼
𝑃𝑆𝐶
=
230 𝑉
𝑍
where
𝑈
𝐿−𝑃𝐸
= 230 𝑉 ± 10 %
The prospective fault currents I
Min
and I
Max
are calculated as follows:
𝐼
𝑀𝑖𝑛
=
𝐶
𝑚𝑖𝑛
𝑈
𝑁(𝐿−𝑃𝐸)
𝑍
(𝐿−𝑃𝐸)ℎ𝑜𝑡
where
𝑍
(𝐿−𝑃𝐸)ℎ𝑜𝑡
= √(1.5𝑅
𝐿−𝑃𝐸
)
2
+ 𝑋
𝐿−𝑃𝐸
2
𝐶
𝑚𝑖𝑛
= {
0.95; 𝑈
𝑁(𝐿−𝑃𝐸)
= 230 𝑉 ± 10 %
1.00; 𝑜𝑡ℎ𝑒𝑟𝑤𝑖𝑠𝑒
and
𝐼
𝑀𝑎𝑥
=
𝐶
𝑚𝑎𝑥
𝑈
𝑁(𝐿−𝑃𝐸)
𝑍
𝐿−𝑃𝐸
where
𝑍
𝐿−𝑃𝐸
= √𝑅
𝐿−𝑃𝐸
2
+ 𝑋
𝐿−𝑃𝐸
2
𝐶
𝑚𝑎𝑥
= {
1.05; 𝑈
𝑁(𝐿−𝑃𝐸)
= 230 𝑉 ± 10 %
1.10; 𝑜𝑡ℎ𝑒𝑟𝑤𝑖𝑠𝑒
Refer to
A 1143
– Euro Z 290 A adapter Instruction manual
for detailed information.
