Installation and Operation Guide SOLECTRIA PVI 25TL-480-R
DOCR-071030-A (11/17/2020)
Page 35 of 101
thread damage, and after screws are fully engaged torque to 35.4 in-lbs (4N.m).
1-1/2 inch knockouts
3.4.6.2
Remove the factory installed liquid-tight hole plugs from the DC knockout holes in the Wire-Box and install 1-1/2 inch
Trade Size conduit and conduit fittings. If the use of smaller conduit is desired, use proper weather-tight reducing
bushings to ensure the Wire-Box maintains its NEMA 4X rating. Confirm all fittings are properly tightened and route the
DC source circuit conductors through the conduit into the Wire-Box.
Table 3-4 DC Electrical Installation DC, Tools Required
TOOL
DESCRIPTION OF USE
#2 PHILLIPS-HEAD SCREWDRIVER
Fuse holder Terminal
DIAGONAL PLIERS OR CABLE CUTTERS
Cut cable
WIRE STRIPPING PLIERS
Remove conductor insulation
TORQUE DRIVER
Torque terminals to specifications
CRIMPING PLIERS / TOOL
Ferrule crimp (optional)
Terminate at fuseholders
3.4.6.3
The Yaskawa Solectria Solar PVI 25TL-480-R wire-box only contains fuse holders for the positive DC conductors. Follow
instructions in Section 3.4.6.4 below for the negative conductors. Strip approximately 1/2 inch of the cable jacket from
the end of the source circuit conductor. Insert the conductor into the fuse holder terminal ensuring the stranding of the
conductor remains firmly twisted and does not separate. Tighten the screw clamp to the torque specified in Table 3-2.
Continue terminating the remaining source circuits in this manner for each MPPT (PV_In1 and PV_In2).
Terminate at busbar
3.4.6.4
The PVI 25TL Wire-Box only contains fuse holders for the positive DC conductors. Follow instructions in Section 3.4.6.3
for the positive conductors. Strip approximately 1/2 inch of the cable jacket from the end of the string conductor. Insert
the conductor into the busbar ensuring the stranding of the conductor remains firmly twisted and does not separate.
Tighten the screw to the torque specified in Table 3-2. Continue terminating the remaining source circuits in this manner
for each MPPT (PV_In1 and PV_In2).
3.5
Electrical Installation AC
The SOLECTRIA PVI 25TL
is a 480VAC, 60Hz, 3-phase grid tied inverter. The inverter will not operate when installed to
any other grid voltage or frequency. This section includes important information regarding the AC grid connection,
wiring requirements, and installation instructions.
INFO
✔
String Sizing Tool:
Yaskawa Solectria Solar offers a String Sizing Tool to help customers design their PV string sizing at
https://www.solectria.com/support/string-sizing-tool/