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ACM100 User's Manual
d. Connect the black wire from the other end of the second Voltage Sense cable to a
fuse appropriately sized for the black wire (18 gauge wire minimum and 3 amp fuse
or less).
e. Connect the other end of the fuse to the AC source hot wire (the fuse should be placed
within 6 inches of the connection to the hot wire).
2.4.2.3 Three-Phase Wye (Phase A, B, C) Connection
Please refer to Figure 5 for connecting the ACM100 to a three phase wye system.
Line (Phase C)
Line (Phase B)
Line (Phase A)
Neutral
Use the following instructions when you are connecting the ACM100 to a three-phase "Wye"
circuit connected via three hot wires and a single neutral. You will need to install three current
transducers and three user-supplied voltage sense cables. The ACM100 comes with a single
current transducer so you will need to purchase two additional current transducers for monitoring
this type of system.
Step 1: De-energize the AC Source.
Step 2: The Current Transducer has black and white wires. Install the first Current Transducer
as follows:
a. Connect the black wire to pin 7 (I
b. Connect the white wire to pin 8 (I
c. Disconnect the Phase A hot wire from the AC power source and place it through the
hole in the Current Transducer such that the arrow on the Current Transducer points
Page 8
1 2
3
4
Figure 5 – Three-Phase Wye Connection Diagram
Current
Transducer
Current
Transducer
Current
Transducer
5
6 7
8 9 10 11 12
) on the ACM100
A+
) on the ACM100
A-
+
+
U.S.
Europe
120 Volts
220 Volts
60Hz
50Hz
-
-
ACM100 Screw Terminals
Revision 1.3
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