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DESIGNATIONS FOR DIAGRAMS:
PT - Motor overcurrent protection
K - Contactor
PZ - Control button ON
PW - Control button OFF
B, BS - Fuses
WS - Service switch
Fig. 3 Example electric connnection diagram of WD roof fans with single phase motors.
Fig. 4 Example electric connnection diagram of WD roof fans with single phase motorsrotów and
TR speed controller.