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Thread: Mecc alt spa SR7 replacement with LS 438 LS/A

  1. #1
    Join Date
    Dec 2009
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    4

    Exclamation Mecc alt spa SR7 replacement with LS 438 LS/A

    Mecc alt spa SR7 replacement with aLeroy somer R438 LS/A
    Problem i am having is that the Labeling of the SR7 AVR terminals is unlike any othe AVR's I have replaced
    Its terminals are 1 2 3 3A 4 4A 5 5A 7 5B 5C, The terminals used the SR7 are 1 3 3A 4 5 5C.
    I have a Leroy Somer 438 LS/A to replace it , but the terminals are marked in the conventional way ie . X2 Z1 X1 Z2 E+ E-OV 110V 220V 380V.
    Has anyone any idea what terminals correspond to the R448?
    Thanks for any help, free beer Lao awaits !!!!
    Regards
    Chris
    Lao technical Services
    Laos
    856 20 55512 060

  2. #2
    Join Date
    Dec 2005
    Posts
    360

    Default

    Charlie Farrow
    Sales Director
    http://www.wellandpower.net/
    All advice provided in these forums by us is for information only. Users of these forums should not rely on answers provided here. We accept no liability for use of this information. If you require professional advice, please contact sales for a rate.
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  3. #3
    Join Date
    Dec 2009
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    4

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    Hi Charlie,
    Yes, but how do the terminals correspond?
    Regards
    Chris

  4. #4
    Join Date
    Dec 2005
    Posts
    360

    Default

    It very clearly shows the sensing, I don't know the terminals on the AVR you mention, you just need to put the correct wires from your alternator to the correct ones on the wiring diagram.
    If you don't know which wires are on the Leroy, then you download the connections from them and match them up.
    Charlie Farrow
    Sales Director
    http://www.wellandpower.net/
    All advice provided in these forums by us is for information only. Users of these forums should not rely on answers provided here. We accept no liability for use of this information. If you require professional advice, please contact sales for a rate.
    Perkins Generators - http://www.wellandpower.net/diesel_g...tors.generator
    Volvo Generators -
    http://www.wellandpower.net/diesel_g...ator.generator

  5. #5
    Join Date
    Feb 2008
    Posts
    186

    Default

    The UVR6 is the universal regulator, not the SR7.
    I suggest you replace it with a UVR6 not an SR7!

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