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4.4 CT Connections
IMPORTANT! The energy management system relies on
the correct CT orientation for each of the measured
loads, PV, and ESS. Follow these instructions with care.
NOTE: white= [+] , black= [-] for all CT models.
IMPORTANT! Use the CT's supplied with the system.
Consult technical support for approved alternatives of
the same type and scalar value as required.
4.4.1 Main Electrical Panel CT
Connections
CT direction faces into the home loads (away from the
utility meter). Current measurement is positive when
load exceeds generation.
1.
Terminate CT1 at the L1 feeder of the main
electrical panel.
2.
Terminate CT2 at the L2 feeder of the main
electrical panel.
4.4.2 Solar PV CT Connection
CT direction faces into the solar PV inverter.
Current measurement is negative when PV is
generating.
1.
Terminate CT5 at the L1 input of the solar circuit
within the backup electrical panel.
4.4.3 PCS CT Connections
CT direction faces into the ESS.
Current measurement is positive when battery is charging and negative when discharging.
1.
Terminate CT7 at the X1 power wire of the PCS.
2.
Terminate CT8 at the X2 power wire of the PCS.
4.5 12V Backup Battery Connection
IMPORTANT! Do not complete this connection until the
customer receives permission to operate the system, and
the main panel DURACELL HUB breaker is ON. The EMC will
be powered when the 12V battery is connected. Failure to
comply with this instruction may cause irreversible damage
to the battery due to battery drainage without a charge
source.
1.
Terminate the positive wire on the AGM battery.
Figure 20 : CT connections for main, PV, and PCS circuits.
Figure 21: Connecting the AGM battery after
permission to operate.
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