Xylem Lowara e-LNEEE Manual De Instalación Y Funcionamiento página 16

en – Original instructions
NOTICE:
The control panel must match the ratings of
the pump unit. Inappropriate combinations do
not guarantee the protection of the unit.
Check that the following requirements are met:
• The control panel must protect the pump against
short-circuit. A time lag fuse or a C type circuit
breaker (MCB) can be used to protect the pump.
• The pump is fitted with thermal and overload
protection.
DANGER: Electrical hazard
•
Before completing any electrical
connections, make sure that the unit and
the electric panel are isolated from the
power supply and cannot be energized.
•
Contact with electric components may
cause death, even after the unit has
been switched off.
•
Before any interventions on the unit, the
network voltage and any other input
voltages must be disconnected for the
minimum time indicated in the "Waiting
times" table (see Chap. 5.1).
Grounding (earthing)
DANGER: Electrical hazard
• Always connect the external protection
conductor to the ground terminal before
attempting to make any other electrical
connections
• Connect all the electric accessories of the
pump and the motor to the ground, making
sure that the connections are completed
correctly
• Check that the protection conductor
(ground) is longer than the phase
conductors; in case of accidental
disconnection of the power supply
conductor, the protection conductor
(ground) must be the last one to detach
itself from the terminal.
Use a cable with several strands to reduce electric
noise.
4.2.2 Wire types and ratings
• All cables must comply with local and national
standards in terms of section and ambient
temperature
• Use cables with minimum heat resistance +70°C
(158°F); to ensure compliance with UL
all power supply connections must be completed
using the following types of copper cables with
minimum resistance +75°C: THW, THWN
• Cables must never enter into contact with the motor
body, the pump and the piping.
• The wires connected to the power supply terminals
and the fault signal relay (NO, C) must be
2
Underwriters Laboratories
16
2
regulations,
separated from the others by means of reinforced
insulation.
Electric connection cables
Electric power supply
cord
Wires Wire
number x numbers
Max. x Max.
copper AWG
Section
2
[mm
(sq.in)]
3x1.5 3x15
(3x0.0023)
4x1.5 4x15
(4x0.0023)
Control cables
External volt free contacts must be suitable for
switching < 10 VDC.
Tightening torque
Mains and Earth
motor Conductor
cable [Nm
terminals (lb.in)]
[Nm (lb.in)]
Spring Spring
connectors connectors
0.8 3
(7.1) (26.6)