
4.6 Connect the power supply
1. Remove the screws of the terminal box cover.
2. Connect and fasten the power cables according to the applicable wiring diagram on
the back of the terminal box cover.
a) Connect the ground (earth) lead.
Make sure that the ground (earth) lead is longer than the phase leads.
b) Connect the phase leads.
3. Mount the terminal box cover.
NOTICE:
Tighten the cable glands carefully to ensure protection against cable slipping and
humidity entering the terminal box.
4. If the motor is not equipped with automatic reset thermal protection, then adjust the
overload protection according to the list below.
– If the motor is used with full load, then set the value to the nominal current value of
electric pump (data plate)
– If the motor is used with partial load, then set the value to the operating current (for
example measured with a current pincer).
– If the pump has a star-delta starting system, then adjust the thermal relay to 58% of
the nominal current or operating current (only for three-phase motors).
4 Installation
26
e-MPA, e-MPR, e-MPD Horizontal Multistage Pump INSTRUCTION MANUAL
Summary of Contents for e-MPA
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