4.3 Electrical installation
WARNING
Before connecting wires, you must be turn off the power switch. If not, an electric
shock will occur. Connect the earth wire correctly.
Install a suitable overload protector for capacity of the motor, otherwise the
motor will be damaged leading to fire.
Connect the wires according to indication on the motor nameplate.
This pump can be used with no trouble practically for fluctuation range of power voltage and
frequency as shown below. But this only means no significantly shortening life time of the pump, no
conforming to the rating value of characteristics will cause temperature rise.
Fluctuation of power voltage ±10%
Fluctuation of frequency ±5%
Total value of simultaneous fluctuation of power voltage and frequency within ±10%
Fig.7 Triangular connection
Fig.8 Y-connection
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