CIRCUTOR computer SMART III-Fast Series - Manual (Page 20)

3�5�7�- Leakage current connection, IΔ
Tomeasuretheleakagecurrent,anearthleakagetransformermustbeused,suchas WGS�
Theleakagecurrenttransformermustbeconnectedsuchastomeasurethecurrentofthe
capacitorbank�Thiswilldetectanyleakageinthecapacitorsofthecapacitorbank�
~
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 )�
NB: The earth leakage transformer must have a ratio of 500 turns. The maximum leakage cur-
rent that the unit can measure correctly is 1.5A AC, even though the maximum input is 5A AC
via the earth leakage transformer.
Donotoperatetheleakagecurrenttransformerwiththe Computer SMART III
FASTpoweredon�
20
Computer SMART III FAST
Instruction Manual