Answer Posted / ganesan.n

1. Phase sequence must be the same,

2. Voltage Must be the same,

3. Frequency must be the same.

how braking & making capacity of circuit breaker are calculated?

2304

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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.

2184

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According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

4172

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how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????

2393

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Ratings of power transformer,Distribution transformer.

1612

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hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks

2162

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How to calculate the volumetric capacity of a oxygen & Nitrogen gas Cylinder if pressure is 145 kg/cm2 & water capacity of cylinder is 67 liters.

2190

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which capacity of RCCB used for five thousand watt electricity load?

1872

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how r charge carriers produced

2082

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Which device of PlC does share load between DG sets when DG are running in perallel?

2075

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What are the advantages of vscf wind electrical system?

1091

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In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?

2004

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i am in need of AC SYNCHRONUS MOTOR 30KW. ANY ONE KNOWS THE MANUFACTURER OF SAME. ALSO MOSFET AC CONVERTER 20KVA CONT.OUTPUT.

1925

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Whata are the types of Cables?

2158

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how can we select the type of wire.what factors we have to look on it , do we have some formula to calculate it. please guide me on it

1946

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