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Installation and Operation Guide SOLECTRIA® PVI 25TL-208, PVI 50TL-480 and PVI 60TL-480
9. Accessories
The Yaskawa Solectria Solar PVI 25TL-208, PVI 50TL-480, AND PVI 60TL-480 inverters have several optional
accessories that allow the inverter to support a wide range of real-world applications.
Fuse Bypass Terminals
The Fuse Bypass Terminals allow for a reduction in the number of DC homeruns by combining the PV source
circuits outside of the inverter wiring box and terminating with one pair of DC inputs to each of the three MPPTs.
Note that external over current protection for the PV source circuits is required outside of the inverter. The MPPT
positive inputs IN1+, IN2+, and IN3+ are isolated from one another by design, although the MPPT negative inputs
IN1-, IN2-, and IN3- are combined via a common bus structure. The Fuse Bypass Terminals MTLSR-070553 for all 3
models.
Bypass Input Terminal Instructions
1. A maximum #2AWG wire should be used to minimize stress on the adapter.
2. Remove the wiring box cover (Figure 9-1).
3. Remove the plastic touch-safe finger guards (Figure 9-2).
4. Use a No. 2 Phillips head screwdriver to install the Bypass Terminals on each bus by fastening each terminal
with the M4 screws. Torque value of 14 in-lbs (1.6 N.m) (Figure 9-3 and Figure 9-4).
5. Use a No. 10 wrench to fasten the three pairs of DC input cables to each of the Bypass Terminals at IN1+,
IN2+, IN3+ (Figure 9-3) and IN1-, IN2-, IN3- (Figure 9-4) with the M6 screws. Torque value of 50 in-lbs
(6.0N.m.).
6. Reinstall the plastic touch safe finger guards. Torque value #
7. Reinstall the wiring box cover. Torque to 35.4 in-lbs (4N.m).
DOCR-071030-A (10/7/2022)
Page 115 of 131
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