Ct Calibration - Generac Power Systems PWRcelP XVT076A03 Installation And Owner's Manual

NOTE: One set of CTs may be utilized for up to two
inverters.
IMPORTANT: Inverter configured for AC Generator Inte-
gration cannot use this method. See
ple Sets of CTs instead.
When running separate sets of CTs for each inverter, the
load value displayed on each inverter screen will be the
total load measured by the CTs.
When daisy-chaining two inverters, the total measured
value is shared evenly between the inverters.
NOTE: Daisy-chaining CTs between two inverters for
distributed load-share is most applicable when each
inverter has a battery attached. Otherwise, this
configuration may not be necessary or desirable.
To daisy-chain a CT signal:
1. Connect and calibrate a set of CTs to the first
inverter.
2. Run a new Cat 5 cable between the spare CT
accessory port of the first inverter to either CT
accessory port on the second inverter.
3. Set GridParInvrtrs to a value of 2. See
below.
NOTE: Running a new Cat 5 or Cat 6 cable between
inverter CT ports prior to calibration in Step 1 may cause
calibration issues.

CT Calibration

•
Install CTs before powering ON the inverter.
•
The inverter automatically detects CTs when
turned ON.
•
Once CTs are detected, a utility pole icon will
appear on the lower right corner of the home
screen power flow diagram. Verify operation by
noting power flow.
– To calibrate CTs, navigate to the inverter device
page, access the menu, and select the Calibrate
CTs option.
– Watch the screen carefully for transient valida-
tion of CTs. When the CT calibration process has
been successfully completed, the inverter LCD
screen will provide feedback showing ct cal suc-
cess. Otherwise, the screen will show ct cal = X,
where the value of X can be found in
Automatic Detection Troubleshooting
Installation and Owner's Manual for Generac PWRCell Inverter
Connecting Multi-
Table 5-7
Table 5-8:
Table.
– CT1 must be connected to Line 1.
– CT2 must be connected to Line 2.
– All CTs must be orientated in the same relative
direction.
– In certain scenarios, additional setpoint modifi-
cations may need to be made. See
for more information.
CT Setpoints
Electrical Connections
Table 5-7:
29