Use a multimeter to examine the resistance in between mains pins on the plug - for almost any clock motor, anticipate a little something in excess of 2k ohms for 230V and 1k for 120V motors. Have a note of the resistance studying, since you'll need it later on.
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The motor has long been dismantled, along with the tails of your take a look at winding are seen protruding of the motor housing. The test winding applied is actually only nine turns, nevertheless it won't issue provided that you know what number of you'll find.
You will find there's compact complication, in that the Hammond utilizes the stray AC magnetic discipline to work the alarm buzzer, but This could not have an impact on the final outcome.
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The measurements display which the motor coils are Pretty much identical. The nameplate ranking is once again 2W, as well as the motor coil attracts 22mA in usual use. This can be these kinds of a little distinction with the Telechron that it might be ignored.
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This motor has not been rewound - and it might not be, mainly because it is a wonderful illustration for demonstration on the attendees of the 'Electric powered Horology Brief Class' which was run for NAWCC Chapter seventy two for the duration of 2008. Since it appears probable which the study course will operate once again, I need demonstration motors.
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In the majority of the examples introduced here, the electrical motion can either be restored to primary or created to appear practically identical to the first, with the only real change becoming that it now operates from a reduced voltage and it is significantly safer than it ever was prior to.
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three Reduced Voltage Operation As a result of often really cramped format of some electrics (such as the Hammond pictured under), PROENC it's impractical to try to rewire the clock using an earth link for safety. There simply just isn't sufficient home to support the 3 wires within a clock that was designed for two wires with hardly suitable insulation. There's a relatively straightforward Resolution although, and that's to rewind the coil to operate at SELV (safety more-reduced voltage).