Circutor Computer SMART III FAST 12, Instruction Manual

Page: 18 / 112

3�4�7�- Leakage current connection, I Δ
To measure the leakage current, an earth leakage transformer must be used, such as
WGS
.
The leakage current transformer must be connected such as to measure the current of the capacitor
bank. This will detect any leakage in the capacitors of the capacitor bank.
~
TC
LOAD
CAPACITORS
S1
S2
P1
P2
I
∆
S1
S1
S2
S2
I
L1,
I
L2,
I
L3
Figure 9: Connection of the leakage current transformer (I
Δ
)�
Note:
The earth leakage transformer must have a ratio of 500 turns. The maximum leakage current
that the unit can measure correctly is 1.5A AC, even though the maximum input is 5A AC via the earth
leakage transformer.
Do not operate the leakage current transformer with the
Computer SMART III FAST
powered on.
18
Computer SMART III FAST
Instruction Manual