If necessary, a grounded metal conduit must be used.
DANGER: Electrical Hazard
All electrical equipment must be grounded (earthed). Test the ground (earth) lead to verify
that it is connected correctly and that the path to ground is continuous.
WARNING: Electrical Hazard
If the power cable is jerked loose, then the ground (earth) conductor must be the last
conductor to come loose from its terminal. Make sure that the ground (earth) conductor is
longer than the phase conductors at both ends of the cable.
4.2.2 Requirements
• The electrical cables must be protected from the following conditions:
– High temperatures
– Vibrations
– Collisions
– Liquids
• The power supply line must be connected to the following components:
– A short-circuit protection device of an applicable size
– A mains disconnection device with a contact opening distance to disconnect for the
overvoltage III category conditions.
4.2.3 Install the safety device
1. Install the safety devices to protect the motor from overload and short circuits.
2. If necessary, install the phase failure sensitive thermal relays.
WARNING:
Motors equipped with automatic thermal protectors open the motor's electrical circuit when
an overload exists. This can cause the pump to start unexpectedly and without warning.
4.2.4 Position the terminal box
1. Remove the motor screws.
2. Rotate the motor in the correct position without removing the couplings.
3. Position the terminal box.
4. Use a torque wrench to tighten the screws of the motor.
For more information, see
on page 34.
4.2.5 Connect the motor
1. Remove the screws of the terminal box cover.
2. Open the terminal box cover.
3. Connect the protection conductor (ground).
The length of protection conductor must be longer than the phase conductor.
4. Connect the phase leads.
Motors should be wired according to the motor manufacturer’s instructions.
5. Use a torque wrench to tighten the terminal screws.
6. Install the cover of terminal box.
7. Tighten the screws.
4 Installation
e-SVI series Instruction Manual
19
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