ELECTRICAL TRANSFORMER SIZING

[PRESLEY MULENGA]

Kindly Help me to size a transformer for the total load below
2No. Motors @ 560KW per motor, 3.3KV, all duty
2No. Motors @ 220KW per motor, 3.3KV, all duty

Primary Voltage 11KV

 

[petersonra]

You have a full load of 1560 kw. You need a transformer at least that big, assuming all four motors might run simultaneously.

You also need to consider voltage drop and how stiff your source is to determine how much of a transformer you need. Also whether the motors are started across the line or not. And if started atl you need to know worst case how many will start simultaneously.

Beyond those observations it is hard to give you any further suggestions.

 

[topgone]

2,500 kVA, 11/3.45 kV. That already included around 30% future load spare.

 

[PRESLEY MULENGA]

You have a full load of 1560 kw. You need a transformer at least that big, assuming all four motors might run simultaneously.

You also need to consider voltage drop and how stiff your source is to determine how much of a transformer you need. Also whether the motors are started across the line or not. And if started atl you need to know worst case how many will start simultaneously.

Beyond those observations it is hard to give you any further suggestions.

Thank you