Answer Posted / amit bose

primary I =(2500*1000)/(11*1000)

Secondary I= (2500*1000)/443

Why lose 1 phase voltage in 33kv to 415v stepdown transformer

1687

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How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

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EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.

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Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

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If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

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Whether amorphous core transformer is commercialized or not:Name of company making amorphous core transformer and what are different rating?

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Could you measure voltage in series?

1186

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