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  • Safety precaution in drivers

    Jeffrey Arulraj

    Jeffrey Arulraj

    @jeffrey-xA7lUP
    Updated: Oct 26, 2024
    Views: 1.0K
    What are the necessary precautions to be taken when using a DC drive of above 100 V supply
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Replies
  • grsalvi

    MemberOct 10, 2012

    The driving system itself has protective features to run DC motors safely.

    However,If you are asking for precautions to run a DC motor.
    Then in case of DC series motors ,they should be never started unloaded.
    Dc series motor have very high starting torque at start.So if started without load they take a very high speed resulting in high mechanical stresses on the parts of motor.
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  • Jeffrey Arulraj

    MemberOct 10, 2012

    I meant while designing a DC driver
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  • grsalvi

    MemberOct 10, 2012

    Well for designing lots of calculations required.
    What you actually want to do ? Like just safe starting or a complete run time protection with speed regulation.
    Start down to top that is from motor to source.

    The most important point and the reason at least starters are requires is : At stand still DC motor emf is zero and coil resistance is also low.Applying rated voltage at start will burn the coils.

    You can add feature to reverse motor rotation.
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  • Jeffrey Arulraj

    MemberOct 11, 2012

    Yeah that I know listen these are my specifications

    OP V=100V
    Current =25 A
    And there is an excellent starter connected to the Motor so there is no problem in the motor side do post any special care like insullation and stuff are required for it
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  • grsalvi

    MemberOct 14, 2012

    I don' t think any extra insulation is required.Just ensure ,the wires are able to carry the current which will be drawn by motor.
    Well if starter is there , for what purpose you want driving system?
    I mean, what extra feature you want to add?
    As far as protection is concerned starters also have mechanism to disconnect motor in case of short circuit.
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  • Jeffrey Arulraj

    MemberOct 14, 2012

    thanks pal got the design ready and working fine
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  • grsalvi

    MemberOct 14, 2012

    great... All the best
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