WLM1 circuit calculation in cabinet 1AN-4

The three-phase load of this main line is unbalanced, and three times the maximum load of one phase is taken as the equivalent three-phase load:

Pe=26*2*3=156KW

Kx=0.7 (single phase 8 households)

Pjs=109Kw

cosφ=0.9

ljs=184A

(The maximum phase is L1)

When it is impossible to achieve complete balance among the three phases, it is advisable to take three times the maximum load of one phase as the equivalent three-phase load, and use this equivalent three-phase load as the basis for calculating the current in the corresponding circuit and selecting equipment such as switches and conductors for the corresponding circuit, excluding the selection of three-phase power transformer capacity.

WLM2 circuit calculation in cabinet 1AN-4

The three-phase load of this main line is unbalanced, and three times the maximum load of one phase is taken as the equivalent three-phase load:

Pe=24*2*3=144KW

Kx=0.7 (single phase 8 households)

Pjs=101KW

cosφ=0.9

ljs=170A

(The maximum phase is L3)

WLM3 circuit calculation in cabinet 1AN-4

The three-phase load balance of this main line can be calculated as three-phase or single-phase. Calculate based on three phases:

Pe=24*3=72KW

Kx=0.95 (12 households in three-phase)

Pjs=68KW

Cosφ=0.9

ljs=115A