MAX Watts for The KID?

Started by JASPak, June 05, 2014, 09:25:23 AM

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JASPak

June 05, 2014, 09:25:23 AM
Morning All -

In reviewing the specs for this unit, I see max input volts, but I do not see a MAX watts listing anywhere.  On a 12V system, what are the max watts limits for The KID?  Anyone know?  Looking to figure how many 260 watt panels can go on one KID with a 12VDC AGM.

I saw one store mention two 72 cell panels, or three 60 cell panels for a 48VDC system, but that isn't much help.

Anyone guide me to my answer?  Thanks for the assistance!

TomW

#1
June 05, 2014, 09:53:04 AM
JAS;

I think the limit is rated in amps. 30 amps to the battery, I believe. The rest is just math. 30X12= 360 Watts etc. You may be able to exceed that occasionally short term but the output fuse is 30 amps.

Tom

Do NOT mistake me for any kind of "expert".

( ͡° ͜ʖ ͡°)


24 Trina 310 watt modules, SMA SunnyBoy 7.7 KW Grid Tie inverter.

I thought that they were angels, but much to my surprise, We climbed aboard their starship and headed for the skies

ClassicCrazy

#2
June 05, 2014, 12:25:13 PM
You might be able to put more watts in than the max out since the controller will limit the output  - the extra watts in won't matter.

The Kid has been used with a 24v  battery as the input voltage to step down to 12v battery charging and that would be well above the 30 amp equivalent input watts.  .

system 1
Classic 150 , 5s3p  Kyocera 135watt , 12s Soneil 2v 540amp lead crystal 24v pack , Outback 3524 inverter
 5s 135w Kyocero , 3s3p 270w Kyocera   Classic 150 ,8s2p  Kyocera 225w to Hawkes Bay Jakiper 48v 20kwh  ,Gobel 16 kwh  lifepo4 Outback VFX 3648  8s2p 380w Rec pv EG4 6000XP

Vic

#3
June 05, 2014, 12:29:53 PM
Hi JAS,

To make things real easy,  MidNite has great String Sizing Tools -- one for the Classic and one for the KID.

Here is the Sizer for the KID:
http://www.midnitesolar.com/sizingTool_kid/index.php

Have Fun,   Vic
Off Grid - Sys 1: 2ea SW+ 5548, Surrette 4KS25 1280 AH, 5.25 KW PV, Classic 150,WB, Beta Barcelona, Beta KID
Sys 2: SW+ 5548s, 4KS25s, 5.88 KW PV, 2 ea. Classic 150, WB, HB CC-needs remote Monitoring/Control, site=remote.
 MN Bkrs/Bxs/Combiners. Thanks MN for Great Products/Svc/Support&This Forum!!

JASPak

#4
June 05, 2014, 05:45:48 PM
Thank you Vic...I am not sure how I missed that.  I found it for the Classics, but not The KID.  Thanks for the directions.

Seems two 260 watt panels are JUST over the edge on a 12V system....dangit...

JASPak

#5
June 05, 2014, 05:51:33 PM
One more question if anyone comes back here...The sizing tool says maximum allowable wattage is at 432.  So, we all know that two 260 watt panels will not produce 432 watts...maybe I will see 400...maybe...

Could I still do this with a KID, or should just suck it up and go with a Classic 150?

Halfcrazy

#6
June 05, 2014, 06:02:43 PM
The Kid will be fine. You can grossly overload the kid with PV and it will simply put out 30 amps.

Ryan
Changing the way wind turbines operate one smoke filled box at a time

JASPak

#7
June 06, 2014, 10:53:56 AM
Good to know and I appreciate the help everyone!!

Jimbo2014

#8
June 26, 2014, 11:23:03 PM
I run 585 watts, over 30 amps mid day, no problem, my window of solar gain is just bigger as more hours of the day
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