User Manual

Packet Power™ Wireless Current Monitoring Module Manual

Figure 5. CMM wiring diagram

Wiring the CMM

FOLLOW ALL OF THE FOLLOWING SAFETY PRECAUTIONS BEFORE WIRING THE

CMM.

1. Place the CT interface board and power supply in the optimal locations using

adhesive tabs or using the holes provided (use PCBA stand offs when mounting the

CMM interface board). The CMM, power supply and all connections must be fully

enclosed.

2. Connect the ribbon cable from the interface board to the CMM module. Note that

Packet Power offers ribbon cables in different lengths.

3. Connect the 5 VDC power source to the interface board. If using the 5 VDC

universal micro power supply make sure to provide a disconnect and over current

protection (1.0 A fused recommended) at the supply source. Refer to the wiring

diagram for details.

4. Connect the CTs to the Interface Board observing the polarity of the CT wires as

well as the proper orientation of the CT on the conductor. The indicator marker on

the CT shall always face the source of the current. Refer to figure 3 below as well as

the Packet Power current transformer data sheet for detailed information. Failure to

observe the correct polarity will result in negative or incorrect current readings.