2 individual 6 panel arrays and 1-12 panel array for a total of 24-75 watt Siemens SP75 panels. These are already mounted and wired for my current 12 volt system, just have to reconfigure at the combiner box.

The SP75 specs: VOC 21.7, VMP 17, ISC 4.8, IMP 4.4

The longest run to the charge controller is about 20 feet.

The reason for the hi VOC required is I want to use all the panels on the 6 panel arrays, these are pole mounted, The other 12 panel array is a pole mounted Wattsun tracker. Plus, -20 degrees F happens every winter.

So 4 parallel strings of 6 panels in series with a VOC of 130.2 before adjustments for temperature and a VOC of 157.5 after adjustments, per NEC.

PV Array

Rated PV Array Power: 1800 Watts

Anticipated Array Power @ 98F: 1705 Watts

Rated PV Array Current: 17.6 Amps

Battery Charging Current @ 57.6 V: 31.3 Amps

VMP (Maximum Power Point Voltage) : 102 Volts

VOC (Open Circuit Voltage): 130.2 Volts

VMP @ -22 F°: 127.2 Volts

VOC @ -22 F°: 153.6 Volts

MNKID Selection

Max Operating Voltage 150

Max Non operating VOC (HyperVOC) @ 48V Nominal Battery Voltage 162

Maximum Number Of Modules In Series 5

Max Allowable Output Current Per KID

Based On This Current Configuration 30

Max Allowable Wattage Per KID

Based On This Current Configuration 1752

Present PV Array Wattage Of This Configuration 1800

Design Check

Max VOC MARGINAL

(HyperVOC)

Temperature The KID Will

Enter HyperVOC -5.8 F°

Array Power (Wattage) EXCESSIVE

KIDs Required 1.1