Appendices
GenStar MPPT
75
Technical Specifications
74
RS-232 Port
EIA-485 Port
Yes
Local Display:
Digital Meter:
Resolution
128 x 64
Viewing Area
70mm x 40mm
Display Color
Backlight:
Blue on white
Operating Temperature
-20°C to +60°C
Storage Temperature
-50°C to +80°C
Environmental:
3000 meters
Ambient Temperature Range:
Storage Temperature
-50ºC to +80ºC
Humidity
100% n.c.
Tropicalization
Conformally coated PCBs;
Protections:
Solar short-circuit
Load over-current
Heatsink temperature Limit
High voltage (solar, battery, load)
Load short-circuit
Short-circuit
High heatsink temperature - current de-rating
GENSTAR MPPT - all models
Yes
Communication-Interfaces:
Ethernet/RJ-45 Port
Yes
Yes
USB-C for data
SD Card
High heatsink temperature - load disconnect
Solar overload (current limit)
Maximum Operating Altitude
Yes
Controller Area Network (CAN)
Yes
Battery removal protection
Solar high voltage foldback
Reverse night current
Marine-rated terminals
Reverse polarity - array
Low temp foldback
High temp. foldback
Power-up against any active faults
Full-power from -30°C to +45°C
(then current de-rated proportionally to +60°C)
APPENDIX A
- Wire Sizing Information
Wire sizing requirements are based on the ampacity (current carrying capacity) of conductors. The
NEC includes Ampacity Tables which are used to determine the ampacity for a given wire size as
indicated in Section 310.15.
GenStar power terminals are rated for 75
º
C. When wires with a 90°C temperature rating are
used with terminals that have a 75°C temperature rating, wire ampacity at 75°C must be used.
Wire ampacity requirements for the battery, PV array and load circuits are:
Controller battery wire ampacity
must be greater than or equal to 125% of maximum continuous
current (battery current rating of the controller)
PV array wire ampacity
must meet both of the following requirements:
Must be greater than or equal to 156% of PV Array Isc without correction and adjustment factors
Must be greater than or equal to 125% of PV Array Isc with correction and adjustment factors
Load wire ampacity
must be greater than or equal to the
load breaker current rating.
NEC Section 240.4(D) requires a maximum breaker or fuse rating for smaller wire sizes as follows:
14 AWG Copper: 15 Amps OCPD and wire ampacity
12 AWG Copper: 20 Amps OCPD and wire ampacity
10 AWG Copper: 30 Amps OCPD and wire ampacity
Therefore, where load circuit-breakers or fuses are larger than indicated above, a larger wire
must be used
.
Correction and adjustment factors may also be required to account for the following:
• Maximum ambient temperature
• temperatures at different parts of the circuit (rooftops or engine rooms for example)
• wire terminal temperature ratings
• multi-conductor cables
• conduit fill and other factors
Celsius to Fahrenheit Conversions
º
Celsius
º
Fahrenheit
30
86
35
95
40
104
45
113
Table A-1. Celsius to Fahrenheit Conversions
