39
When using the Standard wiring box, choose the DC conductor size and
material for the inverters according to the following configuration table:
Table 3-3 DC Terminal Specifications
Terminal
Acceptable wire range
DC input
(
﹢
/
﹣
)
#14-6AWG (Copper only) when terminating to the fuse holders
#6~2AWG (Copper or Aluminum) when
using the Bypass
Terminal kit
The inverters operate with ungrounded arrays, although the PV
system requires a DC EGC (equipment grounding conductor) to
ensure operational safety. The grounding busbars are electrically
bonded by way of the inverter chassis.
3.3.3.2. DC Fuse Configuration/Selection
The CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480
inverter wire boxes include touch safe fuse holders and 15A DC
fuses as a factory standard. Ensure that the appropriate fuse values
are used depending on the configuration of the PV string and by
performing PV fuse sizing calculations for each string.
1. Each DC input conductor for the PV string requires fuse
protection. (2014 NEC and earlier editions)
2. The voltage rating of the fuse must be at least 1000V
DC
.
3. The ampere rating of the fuse is generally selected as 1.56 ×
module Isc of the PV string. Refer to NEC 690.8 for Circuit
Sizing and Current requirements.
INSTRUCTION:
The Working Mode of the inverter may be configured from 3 MPPTs
(Independent Mode [Factory Default]) to 1 MPPT (Parallel Mode)
operation. Parallel mode must be performed by a CPS Service
Technician. Contact CPS Customer Service for further information.
Содержание SCA50KTL-DO/US-480
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Страница 53: ...47 Figure 3 24 Bypass Terminal option installed within the Standard wirebox ...
Страница 139: ...133 Figure 10 1 CPS SCA50KTL kW and kVA derating curves of PV input voltage ...
Страница 140: ...134 Figure 10 2 CPS SCA60KTL kW and kVA derating curves of PV input voltage ...
Страница 141: ...135 Figure 10 2 CPS SCA60KTL Reactive Power Capability ...