Electrical System; Information For Planning The Control System - Delta Foul V3 Installation And Operating Manual

5.4 Electrical system

5.4.1 Information for planning the control system

For the electrical connection of the pump set observe the "Wiring diagrams"
section. The pump set is supplied with power cables; it is wired for DOL starting.
The motors can be connected to electrical low-voltage grids with rated voltages
and voltage tolerances to IEC 60038. The permissible tolerances must be
observed.
5.4.1.1 Overload protection
1. Protect the pump set against overloading by a thermal time-lag overload
protection device in accordance with IEC 60947 and local regulations.
2. Set the overload protection device to the rated current specified on the
name plate.
5.4.1.2 Level control
CAUTION
Automatic operation of the pump set in a tank requires the use of level control
equipment.
Observe the minimum fluid level.
5.4.1.3 Sensors
DANGER
A thermal motor protection device is integrated in the motor.
Delta Foul V3 Submersible Pump
Fluid level below the specified minimum
Damage to the pump set by cavitation!
 Never allow the fluid level to drop below the specified minimum.
Operating a pump set that has not been fully connected
Explosion hazard!
Damage to the pump set!
 Never start up a pump set with power cables that have not been fully connected or
non-operational monitoring devices.
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