How to Select Conductor Busbar System for Crane

The three-phase rated current I is as follows

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·        I-The rated maximum current(A)

·        P-The rated maximum power(W)

·        U-The voltage(V)

·        Cosθ Power factor, generally 0.8

The single-phase rated current I is as follows

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·        I-The rated maximum current(A)

·        P-The rated maximum power(W)

·        U-The voltage(V)

·        Cosθ Power factor, generally 0.8

Example 1: Assuming that the rated maximum power is 90kw, the voltage is 400V, and the power supply is three-phase, the calculated current is as follows.

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Example 2: Assuming that the rated maximum power is 20kw, the voltage is 220V, and the power supply is single-phase, the calculated current is as follows.

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