Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 12-06-2018, 02:49   #1
Registered User

Join Date: Jan 2017
Posts: 16
How is possible?

From 2 solar panels ( 2 x 200 W), i am getting 13-14 V (charger outpout) but 0.1 Ampers? Charger input 20 V.
I should get about (2x5) 10 A on sunny day.
__________________

squaw999 is offline   Reply With Quote
Old 12-06-2018, 02:54   #2
Registered User

Join Date: Nov 2013
Location: Nice, France
Boat: Hunter Marine 38
Posts: 591
Re: How is possible?

What is the load that is hooked up to the panel output? What is the charge status of the batteries? What are the settings of the controller?
__________________

sailormed is offline   Reply With Quote
Old 12-06-2018, 02:59   #3
Registered User

Join Date: Jan 2017
Posts: 16
Re: How is possible?

Load is frig only (approx. 3-4 A). Charger shows, battery full although voltmeter indicate 12.1-12.4 V. Controler is set up for Li-Acid baterry (i have 2 these batterise 2x160 Ah). Last summer everthing was fine-i have electricity for small village .
Tnx
squaw999 is offline   Reply With Quote
Old 12-06-2018, 03:00   #4
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 7,293
Re: How is possible?

Quote:
Originally Posted by sailormed View Post
What is the load that is hooked up to the panel output? What is the charge status of the batteries? What are the settings of the controller?


This.

If your batteries don’t need any current, they won’t take current.
Sailmonkey is offline   Reply With Quote
Old 12-06-2018, 03:04   #5
Registered User

Join Date: Jan 2017
Posts: 16
Re: How is possible?

I think i do not have enough current (to start frig (danphos) i must start engineen. After initial start, frig works OK (thermostat switch off/on normaly).
Tnx
squaw999 is offline   Reply With Quote
Old 12-06-2018, 03:38   #6
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 14,076
Re: How is possible?

Quote:
Originally Posted by squaw999 View Post
From 2 solar panels ( 2 x 200 W). I should get about (2x5) 10 A on sunny day.
Actually from two panels of 200 W each, 400 W total you should get 25-30 amps maximum under sunny conditions IF your batteries are at a low state of charge.


Quote:
Originally Posted by squaw999 View Post
13-14 V charger output but 0.1 Ampers? Charger input 20 V.
How are you measuring the output volts and amps? Are you using a built in battery monitor or a hand held voltmeter? Are you sure of the measurement of 0.1 amps only?


Quote:
Originally Posted by squaw999 View Post
i am getting 13-14 V (charger out put) but 0.1 Ampers? Charger input 20 V.
By charger I assume you are referring to the solar charge controller. What brand and model do you have? Is it programmable?
__________________
The water is always bluer on the other side of the ocean.

Sometimes it's necessary to state the obvious for the benefit of the oblivious.

Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 12-06-2018, 03:46   #7
Registered User

Join Date: Jan 2017
Posts: 16
Re: How is possible?

VOTRONIC MPP 250 DUO DIGITALAClick image for larger version

Name:	IMG_0567.jpg
Views:	328
Size:	77.8 KB
ID:	171537
squaw999 is offline   Reply With Quote
Old 12-06-2018, 03:48   #8
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 14,076
Re: How is possible?

Quote:
Originally Posted by squaw999 View Post
I think i do not have enough current (to start frig (danphos) i must start engineen. After initial start, frig works OK (thermostat switch off/on normaly).
Tnx
Refrigerators are very sensitive to low voltage. I had problems when I first installed mine and was sure it was something else but on advice from experts I used new wire and connectors from my batteries to the fridge and the problem was solved.

So the fridge can be a good test of low voltage but you need to isolate the cause. It could be the charger but also it could be the wiring. To help determine a few questions could help

1. Does the fridge work normally if your batteries are fully charged (without the engine or any other charging like a generator turned on)

2. Have you inspected the fridge wiring for loose connections or corrosion at any terminals?

Here is a test you can try. Fully charge the batteries by the engine, a generator or shore power, then turn off the charging for an hour. Then test the fridge. Does it start normally? Check the voltage at the battery and at the fridge when you try this test.
__________________
The water is always bluer on the other side of the ocean.

Sometimes it's necessary to state the obvious for the benefit of the oblivious.

Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 12-06-2018, 03:55   #9
Registered User

Join Date: Jan 2017
Posts: 16
Re: How is possible?

Quote:
Originally Posted by skipmac View Post
Refrigerators are very sensitive to low voltage. I had problems when I first installed mine and was sure it was something else but on advice from experts I used new wire and connectors from my batteries to the fridge and the problem was solved.



So the fridge can be a good test of low voltage but you need to isolate the cause. It could be the charger but also it could be the wiring. To help determine a few questions could help



1. Does the fridge work normally if your batteries are fully charged (without the engine or any other charging like a generator turned on)



2. Have you inspected the fridge wiring for loose connections or corrosion at any terminals?



Here is a test you can try. Fully charge the batteries by the engine, a generator or shore power, then turn off the charging for an hour. Then test the fridge. Does it start normally? Check the voltage at the battery and at the fridge when you try this test.


Tnx. I will do that. I am also suspicious about my wiring. A did some check-my amateur logic was, if am getting appropriate voltage, than wiring is ok.
squaw999 is offline   Reply With Quote
Old 12-06-2018, 03:56   #10
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 14,076
Re: How is possible?

Quote:
Originally Posted by squaw999 View Post
VOTRONIC MPP 250 DUO DIGITALAAttachment 171537
If I read the labels on the charge controller correctly it is rated for 250W, 15 amp maximum so your 400 W of solar panels exceeds the rating of the controller.

It is possible that

1. the controller has been damaged by over current

2. the controller might have a protective circuit that is shutting it down to avoid damage.

3. The fuse could be blown

I would first check the fuse, then disconnect one panel to make sure the input is at a level the controller can accept and check again. Also feel the controller to see if it is very warm or hot.
__________________
The water is always bluer on the other side of the ocean.

Sometimes it's necessary to state the obvious for the benefit of the oblivious.

Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 12-06-2018, 03:58   #11
Registered User

Join Date: Jan 2017
Posts: 16
Re: How is possible?

I have 2 panels, each 100 W-together 200 W
squaw999 is offline   Reply With Quote
Old 12-06-2018, 04:01   #12
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 14,076
Re: How is possible?

Quote:
Originally Posted by squaw999 View Post
Tnx. I will do that. I am also suspicious about my wiring. A did some check-my amateur logic was, if am getting appropriate voltage, than wiring is ok.
When I had a fridge problem I checked the voltage at the wiring right at the fridge and it looked good so I thought not a voltage problem. However, new and larger wires with new crimp connectors from the battery directly to the fridge the problem was solved.

What I learned, the initial current to start the fridge is very high, much higher than the steady current when running. When the fridge compressor tries to start there is a very short time, micro seconds, where a high current is needed and if the voltage and wiring isn't perfect it will not start. The time is so short you cannot see this on a normal meter (I know I tried). If you start the engine the higher voltage from the alternator can be enough to overcome the problem but only as long as the engine is running.
__________________
The water is always bluer on the other side of the ocean.

Sometimes it's necessary to state the obvious for the benefit of the oblivious.

Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 12-06-2018, 04:01   #13
Registered User

Join Date: Jan 2017
Posts: 16
Re: How is possible?

I also measure direct output from solar panel =20 V and about 0.2 A.
squaw999 is offline   Reply With Quote
Old 12-06-2018, 04:06   #14
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 14,076
Re: How is possible?

Quote:
Originally Posted by squaw999 View Post
I have 2 panels, each 100 W-together 200 W
OK, sorry I misunderstood. In you first post you said 2 X 200W. I thought you were saying 2 panels, each 200 W.
__________________
The water is always bluer on the other side of the ocean.

Sometimes it's necessary to state the obvious for the benefit of the oblivious.

Rust is the poor man's Loctite.
skipmac is online now   Reply With Quote
Old 12-06-2018, 04:07   #15
Registered User

Join Date: Jan 2017
Posts: 16
Re: How is possible?

Quote:
Originally Posted by skipmac View Post
OK, sorry I misunderstood. In you first post you said 2 X 200W. I thought you were saying 2 panels, each 200 W.


My appolgise-english is not my first language
__________________

squaw999 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Possible Insight Into Why Americans Want to Carry Guns ssullivan Health, Safety & Related Gear 57 27-03-2007 12:25
Is preventing Blisters possible? Lynx Construction, Maintenance & Refit 21 26-11-2006 19:59
is it possible? moth12' Atlantic & the Caribbean 28 23-09-2006 08:36
Is it possible to "test drive" nav software? cjenkins Marine Electronics 0 31-05-2006 07:05
Is it possible? aurovon Meets & Greets 14 25-10-2005 20:21



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 08:50.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.