Connecting Cts To The Inverter; Connecting Multiple Sets Of Cts; Connecting Cts To Multiple Pwrcell Systems / Inverters - Generac Power Systems PWRcelP XVT076A03 Installation And Owner's Manual

Electrical Connections

Connecting CTs to the Inverter

NOTE: Class 2 low voltage cable shall be installed
independent of other power conductors. See NEC
725.136 for additional information.
1. See Figure 5-16. Connect CT leads to the CTs
Adapter with push terminals (M) or screw terminals
(N) according to the label on the breakout adapter.
NOTE: Use yellow lead for CTx+ and use green lead for
CTx-.
M
Figure 5-16. CTs Adapter
NOTE: The CTs Adapter is included in the Generac
PWRcell Kit.
NOTE: See Table 5-5. The connection between the CTs
Adapter and the inverter is made using an installer
supplied Cat 5 or Cat 6 cable.
Table 5-5. CT RJ-45 Pinout
Wire Color
Pin
(T-568A)
1 White / Green
2 Green
3 White /Orange
4 Blue
5 White / Blue
6 Orange
7 White / Brown
8 Brown
2. See
Figure 5-17. Connect Cat 5 / Cat 6 cable to a
CTs accessory port (H).
• CTs accessory ports are double-stacked RJ-45
ports.
• Either the top or bottom port may be used.
• Both ports may be used when multiple sets of
CTs are required.
28
N
012424
Wire Color
Value
(T-568B)
White / Orange CT3+
Orange CT3-
White / Green CT2+
Blue CT1+
White / Blue CT1-
Green CT2-
White / Brown Not Used
Brown Not Used
J
H
Figure 5-17. Accessory Ports
H Current Transformers (CTs) Accessory Port (RJ-45)
Automatic Transfer Switch (ATS) Accessory Port
J
(RJ-45)
K REbus Beacon Port (USB-B)
L Authorized Generac Personnel Only
M STOP Terminals

Connecting Multiple Sets of CTs

When installing CTs, local factors may require multiple
sets of CTs to fully measure the utility power being sent to
the building.
Installing two sets of CTs:
•
Use two pairs of CTs to measure services with two
sets of feeder conductors. Use each pair of CTs to
measure a pair of service conductors / feeders
within the main panel.
•
Connect CT1 from both sets to the same phase
and CT2 from both sets to the second phase.
•
See Table 5-6: Multiple CT
Cat 5 cables from the adapters into the two CT
accessory ports at the inverter.
NOTE: Make sure to use the same pinout and
connections.
Table 5-6. Multiple CT Connection
Service
Phase and Adapter
CT
Wire
Adapter
1-1 L1-1
1-2 L2-1
2-1 L1-2
2-2 L2-2
Connecting CTs to Multiple PWRcell Systems /
Inverters
When an installation has multiple PWRcell Inverter
systems, either:
•
Run a set of CTs for each inverter.
•
Run a set of CTs to one inverter and run a Cat 5
cable from the spare CT port within that inverter to
either CT port within the second inverter.
Installation and Owner's Manual for Generac PWRCell Inverter
L
K
010001
Connection. Connect
CT Port
Adapter
Row
Pins
Values
1 4 and 5 Front Port
1 3 and 6 Front Port
2 4 and 5 Back Port
2 3 and 6 Back Port
M