Electrical Connection - Grundfos RSI Serie Instrucciones De Instalación Y Funcionamiento

4.2 Electrical connection

WARNING
Death or serious personal injury
‐
To avoid the risk of electric shock or
fire, make sure that the power supply
has been switched off before connect-
ing the equipment, and make sure the
earth terminal is reliably grounded.
WARNING
Death or serious personal injury
‐
Make sure that reinforced protective
ground connection is present. It is
mandatory because the touch current
of the AC drives is more than 3.5 mA
AC (refer to EN 61800-5-1).
WARNING
Death or serious personal injury
‐
Install the electrical connections ac-
cording to the wiring diagrams.
WARNING
Death or serious personal injury
‐
The drive must always be grounded
with a grounding conductor that is con-
nected to the grounding terminal. The
terminal is identified with the grounding
symbol in 4.2.2 RSI input
To avoid arc discharge and fire, tighten all
terminals with the specified torque.
For distances (pump to the inverter) ex-
ceeding 15 m (50 ft), use a sine-wave filter
with matching current ratings.
Minimum cross-sectional area of protective
conductors (HD 60364-5-54)
Cross-sectional area of
the phase conductors
(S) [mm2]
S ≤ 16
16 < S ≤ 35
35 < S
The values of the table are valid only if the protective
earthing conductor is made of the same metal as the
phase conductors. Otherwise the cross-sectional area
of the protective earthing conductor must be
determined in a manner that produces a conductance
equivalent to that which results from the application of
this table.
The cross-sectional area of each protective grounding
conductor that is not a part of the mains cable or the
cable enclosure, must be a minimum of 2.5 mm2 if
terminals.
The minimum cross-
sectional area of the
protective grounding
conductor [mm2]
S
16
S/2
there is mechanical protection, and 4 mm2 if there is
not mechanical protection. If you have cord-
connected equipment, make sure that the protective
grounding conductor in the cord is the last conductor
to be interrupted, if the strain-relief mechanism
breaks.
Make sure to comply with the local regulations on the
minimum size of the protective grounding conductor.
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