EBARA DL Instruction Manual page 11

200V Class
PE
L1 L2 L3
PE
E U V W
MOTOR
1) Wiring
Perform the wiring shown in Fig.6. After doing so, make sure that the pump's cable is securely
connected to the panel's terminals.
2) Cable
a) Never immerse the cable end in water.
b) If a cable is extended by connecting other cable, do not immerse the connected section in water.
c) Support the cable by the discharge pipe using an adhesive tape, a PVC band, etc.
d) Lay the cables with care to avoid overheating. Overlap winding or direct exposure to sunray
may cause overheating.
3) Grounding
V
W
White
U
Black
E
Red
Green
3-phase
200V
Grounding
a) For 3-phase, grounding shall be done using Green cord (Label E) Or Green and Yellow stripe
cord (Label PE) or the Green cord (Label E) among the four lines, as shown in Fig. 7. Never
connect the Green and Yellow stripe cord or the Green cord to the power source. The grinding
shall be surely conducted conforming to the Technology Standard of Electric Facilities.
b) For the cases of long cable or other situations, the ground fault breaker is actuated in spite of
fully grounding of motor, checked by a megger. The phenomenon occurs from an electrostatic
capacity between the cable and the ground. Specifically, a rush current at start of pump likely
induces the actuation of the ground fault breaker. In that case, the ground fault breaker shall be
the one having low sensitivity of sensitive current. On adopting the ground fault breaker with low
sensitivity of sensitive current, care shall be given to electrical safety by assuring grounding, etc.
4)
Motor protection
a) Auto-cut
The motor (standard model of 7.5kW
or less) has a built-in Auto-cut that
covered from overload, short cooling
and etc.
PE L1 L2 L3
PE
U V W Z X Y
0
MOTOR
Fig.6
Fig.2
X
White
Z
Y
Red
Black
3-phase
Contact rating
Contact type
Contact Cable
- 11 -
200V Class
PE L1 L2 L3
PE
U V W
0
MOTOR
V1
W1
Black 2
U1
Black 3
PE
Black 1
Green/Yellow
3-phase
400V
Grounding
Thermal Protection
AC230V, 13A (Max)
AC200V-6mA or DC12V-10nA (Min)
Break Contact
(Normal: on, At temp. rise: OFF)
2 cores PVC, Cab-tyre Cable 1mm
Brown, Light Blue (non-polarity)
Z X Y
W2
U2
Black 2
V2
Black 3
PE
Black 1
Green/Yellow
3-phase
Fig.7
Grounding
Fig.2
2
EBARA
CORPORATION
.