Midnight Solar MNE-240 Voltage Checks

nomad
nomad Registered Users Posts: 4
in Solar Beginners Corner #1
I was running through the start-up and testing voltage checks on page 18 of the owners manual. I failed on 4.0 B. 2a. (the generator voltage between the AC Hot OUT 1 bus-bar and the Neutral Bus Bar i.e. no 120Vac ) Test 2b passed on the AC Hot Out 2 (confirmed 120VAC) and Test 2c failed between AC Hot Out 1 bus-bar and the AC Hot Out 2 bus-bar (120 VAC instead of 240VAC) How do I trouble shoot this?
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,642 admin
    #2
    Re: Midnight Solar MNE-240 Voltage Checks

    Can you give us a link to the installation manual...

    And are you wiring a 120 VAC or 120/240 VAC genset + AC inverter system?

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • Vic
    Vic Solar Expert Posts: 3,208 ✭✭✭✭
    #3
    Re: Midnight Solar MNE-240 Voltage Checks

    nomad,

    Is the generator capable of outputting 240 VAC ? If the generator has a 120/240 VAC switch (which makes all of the generator power 120 V not 240 V), is this switch in the 240 VAC position?

    Seems to me, if you have 120 V in steps a and b, then if only 120 VAC in step c, perhaps the genset might only be outputting 120 VAC.

    Also check all of the wiring for the generator AC into the E-panel, the bypass switch wiring and the wiring of the AV busbars. I have not dealt with one of these panels ... guessing. Good Luck, Vic
    Off Grid - Two systems -- 4 SW+ 5548 Inverters, Surrette 4KS25 1280 AH X2@48V, 11.1 KW STC PV, 4X MidNite Classic 150 w/ WBjrs, Beta KID on S-530s, MX-60s, MN Bkrs/Boxes.  25 KVA Polyphase Kubota diesel,  Honda Eu6500isa,  Eu3000is-es, Eu2000,  Eu1000 gensets.  Thanks Wind-Sun for this great Forum.
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