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9 Accessories
The CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters have
several optional accessories that allow the inverter to support a wide range of
real world applications.
9.1 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
wirebox 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.
9.1.1 Bypass Input Terminal Instructions:
1. Remove the wirebox cover (Figure 9-1).
2. Remove the plastic touch safe finger guards (Figure 9-2).
3. 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 Nm) (Figure 9-3 and
Figure 9-4).
4. 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.).
5. Reinstall the plastic touch safe finger guards. Torque value #
6. Reinstall the wirebox cover. Torque to 35.4 in-lbs (4N.m).
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