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OPERATING AND MAINTENANCE MANUAL
SUBMERSIBLE HYDRAULICS 4ST SERIES
9. ELECTRICAL CONNECTION
Connect the electric pump via its cable to the connectors for starting, according to the following
instructions:
1.
Fixed voltage electro-pump with three-wire hose: according to diagram 1
2.
Electric pump capable of starting at dual voltage (e.g. 220/380V), with six-wire hose: for 220V con-
nection see diagram 2; for 380V connection see diagram 3.
3.
High-power electric pump, fixed voltage, with six-wire hose.
ELECTRIC
SWITCHGEAR
TERMINALS
10. ELECTRICAL WIRING STANDARDS
The electrical connections generally used are:
•
AD type for direct start
•
Type AST for star-delta start
Electrical connections, except in very special cases, must be firmly fixed on a support in such a way
that they can be reached by a person and, in any case, at least 50 cm from the release.
1.
Check that the electrical components are compatible with the mains voltage.
2.
Connect the power supply line to the appropriate terminals.
3.
Connect the poles of the electric pump cable to the appropriate terminals.
4.
Make a proper connection of the earth connection of the installation.
It is not recommended to use the electric pump or the well casing as an earthing system.
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DIAG. 1
DIAG. 2
ELECTRIC
SWITCHGEAR
TERMINALS
DIAG. 3
DIAG. 4
ELECTRIC
ELECTRIC
SWITCHGEAR
SWITCHGEAR
TERMINALS
TERMINALS
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