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3.Electric wiring
Warning
Execute correct wiring work by a qualified technician conforming to the
applicable legal standards. Wrong wiring by non-qualified worker is illegal and
may induce electric shock and fire.
Do apply grounding wiring. The Green and Yellow stripe cord or the Green
cord is the grounding line. Never connect the Green and Yellow stripe cord or
the Green cord to the power source because there is a possibility of electric
shock in case of trouble or electric leak.
To prevent electric shock, install an exclusive use ground fault breaker. The
electric leak may cause electric shock and fire.
If any dust is attached to a blade or blade-attaching face of the power source
plug, fully wipe the dust off with a dry-cloth. The attached dust may cause fire.
Confirm non-loosening at the wirings of motor, at the primary and secondary
terminals of control panel, and at the connection and wiring terminals of the
power devices in the control panel. Remove dust from these sections.
Imperfect connection of wiring caused by loosening and attached dust may
cause ignition resulting in fire.
This submersible pump must be equipped with a main disconnect device in
accordance with requirements of appropriate legal standard (EN60204-1,
clause 5.3.2). A suitable rating over current protective device also needs to
be provided in the final installation.
It is recommended to use a circuit breaker as main breaker that is suitable for
isolation according to appropriate legal standard (EN60947-2) and is equipped
with an operating handle which is lockable in OFF position and complies with
the other requirements of appropriate legal standard (EN60204-1, clause 5.3).
Caution
Assure the tightening of connection screws at the electric-connection section.
There is a possibility of heat generation trouble and burn-out.
Do not lay the water level signal cable and the power cable in a single conduit.
There is a possibility of mal-functioning resulting from noise.
Execute correct power source work of motor and wiring work by a qualified technician conforming to the
applicable legal standards. Wrong wiring and grounding work by non-qualified worker is illegal and very
dangerous. To prevent electric shock, install a ground-fault breaker exclusively for this products.
MOTOR
L1
PE
Y
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llo
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/G
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n
B
la
ck
1
B
la
ck
2
B
la
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3
PE
L2 L3
U1 V1 W1
0
L1
PE
L2
L3
PE
2
Yel
lo
w
/G
ree
n
B
la
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1
B
la
ck
2
B
la
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3
Bl
ac
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2
B
la
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3
B
la
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1
Br
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to
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bl
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Li
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bl
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U1 V1 W1 W2 U2 V2
MOTOR
L1
PE
L2 L3
PE
0
2
Yel
lo
w
/G
ree
n
B
la
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1
B
la
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2
Bl
ac
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3
B
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2
Bl
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3
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1
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U1 V1 W1 W2 U2 V2
MOTOR
ELECTRICAL WIRING FOR
PUMP UP 7.5kW
(Cable for 4wirees)
400V Class
ELECTRICAL WIRING FOR PUMP FROM 11kW TO 22kW
(2 Cable for 4 Cable for 2wirees)
DELTA STRATING STAR/DELTA STRATING
400V Class