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Off Grid switch

Discussion in 'Equipment' started by karlfk, Sep 23, 2017.

  1. karlfk

    karlfk Member

    Joined:
    Aug 26, 2013
    Messages:
    98
    Country:
    australia
    State:
    western australia
    City:
    perth
    Hi Guys

    Long time no post, all my Aquaponics are running well, we now have silvers in my tub all doing well

    I just got the solar up and running for two of my pumps

    1.jpg 21552064_10203311376102628_8306422445254389009_o.jpg silvers.jpg

    Here's what I have so far
    have a question for all, my set up is like so for running a couple of pond pump's

    one of the pumps are PondMAX PM1200F, 25watt, the other one is smaller

    one pump is for my pond and the other is my Aquaponics set up

    what you reckon
    at this stage the panels are hooked up as series and I think its only pushing out round 5 amps
    if I connect it up as parallel it should give me 10 amps ?

    I'm also asking if any one knows of a Automatic Transfer Switch so when my battery drops down in power it will auto switch to mains power and once the charge is up it will switch back, any idea's

    the list

    12V 100Ah Deep Cycle SLA Battery
    CAT.NO: SB1695

    Specifications:
    • Capacity: 100Ah
    • 20 hr rate: 5.1A (102Ah)
    • 10 hr rate: 10A (100Ah)
    • 5 hr rate: 16.2A (81Ah)
    • 1 hr rate: 58.5A (58.5Ah)
    • Initial charge current: 30A
    • Cycle voltage: 14.4 - 15V
    • Standby voltage: 13.5 - 13.8V
    • Dimensions: 330(L) x 173(W) x 223(H)
    • Weight: 31.5kg

    =========================================
    2 lots of panels

    25 year limited warranty

    Powertech Monocrystalline Solar Panel - 80W
    CAT.NO: ZM9097

    ZM-9097 Specifications:
    • Maximum power: 80W
    • Rated voltage: 12V
    • Open circuit voltage: 21.8V
    • Short circuit current: 5.23A
    • Dimensions: 1210 x 540 x 28mm
    • Weight: 8.2kg

    ========================================
    12V/24V 30A MPPT Solar Charge Controller
    CAT.NO: MP3735

    NOTE:
    1. Suitable for 12V or 24V battery systems only.
    2. Suitable for 12V or 24V nominal PV array systems only.
    3. This unit WILL charge a 12V battery from 24V solar panels, but not vice versa.
    Specifications
    Max PV array power 360W(12V) or 720W(24V)
    Battery system voltage 12VDC or 24VDC
    Max PV open circuit voltage 65V
    Max input current 30A
    Rated load current 30A
    Ambient temp range -20°C - 50°C
    Efficiency 97%
    Dimensions 205(L) x 145(W) x 55(H)mm

    =======================================

    150W (450W Surge) 12VDC to 230VAC Electrically Isolated Inverter
    CAT.NO: MI5102

    Specifications:
    Output Power Continuous: 150W
    Output Power Surge: 450W
    Standby Current: < 300mA
    Input Voltage: 10 - 15VDC
    Output Wave Form: Modified Sine Wave
    Efficiency: > 90%

    cheers karl
     
    Last edited: Sep 23, 2017
  2. Murray

    Murray Site Admin Staff Member

    Joined:
    Jun 4, 2009
    Messages:
    7,621
    Country:
    Australia
    State:
    Queensland
    City:
    Brisbane
    Connected in series is better in your instance. In series will give you more volts. Amps = watts/volts It is watts that matter, how many watts coming off the panels.
    Switching automatically to back up gen set will require a different inverter/charger than the one you have and an auto-start capable gen set.

    Very nice setup you have. The pond and garden are very attractive.
     
  3. karlfk

    karlfk Member

    Joined:
    Aug 26, 2013
    Messages:
    98
    Country:
    australia
    State:
    western australia
    City:
    perth
    Hi Murray I've had a lot of different answers, yes they are in series, this is the way I have then setup now,
    seriesDiagram_updated.jpg
    I only have two panels at 12v, 80W each, I'm thinking of putting up a third one, but the extra one is at 145W 12V, so would that give me 305watts at 36volts ?

    cheers karl
     
  4. Murray

    Murray Site Admin Staff Member

    Joined:
    Jun 4, 2009
    Messages:
    7,621
    Country:
    Australia
    State:
    Queensland
    City:
    Brisbane
    Yes, but be careful you do not exceed the input voltage of your solar controller.
     

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