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Troubleshooting guide when motor overload trip ...

Troubleshooting guide when motor overload trip 30/07/2013 by Lemau 7 Comments On my last post,I'd discussed about motor overload relay that are common used for motor starter application.As we known,the main purpose of motor overload relay is to protect our electric motor winding from mechanical overload that can result the serious damage.

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your machine for the voltage and phase marked on the motor and as indicated in the electrical box ... Intended Use ... The spindle (the piece the grinding belt goes around at the front of the machine) is .... 230 Volt three phase 5 hp: setting on dial should be at 12. ... If this value reads infinity, the overload relay has tripped.

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May 05, 2008· If the overload is tripping you may have a bum overload heater or maybe an odd ball among the three. Check each of the O/L numbers and compare them with the chart for the currrent specified for you motor's nameplate FLA. If one oddball overload snuck in somehow and you swap it out with the correct one that should solve the problem.

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Sizing for overload is important to avoid serious damage for electrical application such as motor starter,machinery or others electrical equipment. According to NEC,the general requirement for overload sizing be set around 115% or 125% from full load ampere.We should setting the overload relay within this parameter to avoid electric motor from serious damage.

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What are the most common causes of electric motors failure? ... (Electrical Overload): In different operating conditions, electrical devices will sometimes start to draw more current than their ...

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Mar 11, 2016· It means, numbers of times the motor can be started and stopped in an hour. If motor is strted numbers of time more than the specified "starts per hour", it may result in tripping of the overload relay. In absence of overload relay protection, mo...

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