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Answer Posted / lokesh ranjith
connecting nuetal is call earthing
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How to calculate the sag of OPGW during stringing???
Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.
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I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?
sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.
Dear Respected sir how to test ABB REX521 protection relay by relay tester.
Define maximum demand?
hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com
