Wilo TOP-Z Instrucciones De Instalación Y Funcionamiento página 38

English
• Commission pumps only if they are fitted with the correct modular cover. Check
that the cover gasket is correctly seated.
• Earth the pump/installation as per regulations.
7.2.1 Motor protection
DANGER! Risk of fatal injury!
Improper electrical connections can lead to fatal electric shock.
If the mains and thermal winding contact (WSK) line are fed in a 5-wire cable,
the thermal winding contact line is not allowed to be monitored with an
extra-low voltage.
CAUTION! Risk of material damage!
If the thermal winding contact (WSK, terminal 10 and 15) of the pump is not
connected to the motor protection, the motor might be damaged by thermal
overload!
Pump with terminal
box type
1/2
1~ 230 V
(P max ≤ 205 W)
1
3/4
(295 W ≤ P
≤ 345 W)
5
(295 W ≤ P
≤ 345 W)
6
3~ 400 V
(P max ≤ 215 W)
1
7
(305 W ≤ P
≤ 1445 W)
• The setting of any thermal tripping fitted must correspond to the maximum
current (see rating plate) of the speed stage at which the pump is being
operated.
34
Tripping
Internal interruption of
motor voltage
WSK and external trip-
ping unit (SK602(N)/
max
1
SK622(N) or other
switchgear/control
device)
WSK and external trip-
ping unit (SK602(N)/
max
1
SK622(N) or other
switchgear/control
device)
Internal interruption of
a motor phase
WSK and external trip-
ping unit (SK602(N)/
max
1
SK622(N) or other
switchgear/control
device)
SSM Fault acknowledgement
(collect
ive
fault
signal)
-
Automatically, after the motor
has cooled down
-
After the motor on the SK602/
SK622 has cooled down: manually
on the tripping unit
on the SK602N/SK622N:
automatically
-
After the motor on the SK602/
SK622 has cooled down: manually
on the tripping unit
on the SK602N/SK622N:
automatically
-
• Switch off mains voltage
• Allow motor to cool down
• Switch on mains voltage
-
After the motor on the SK602/
SK622 has cooled down: manually
on the tripping unit
on the SK602N/SK622N:
automatically
WILO SE 11/2023