EBARA DL - Page 11

EBARA
CORPORATION
.
- 11 -
Thermal Protection
Contact rating
AC230V, 13A (Max)
AC200V-6mA or DC12V-10nA (Min)
Contact type
Break Contact
(Normal: on, At temp. rise: OFF)
Contact Cable
2 cores PVC, Cab-tyre Cable 1mm
2
Brown, Light Blue (non-polarity)
3-phase
Grounding
Green
E
Black
W
White
V
Red
U
3-phase
Black
Y
White
X
Red
Z
200V
3-phase
Grounding
Green/Yellow
PE
Black 3
W1
Black 2
V1
Black 1
U1
3-phase
Grounding
Green/Yellow
PE
Black 3
U2
Black 2
W2
Black 1
V2
400V
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
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.
Fig.6
Fig.2
Fig.7
Fig.2
MOTOR
L1
PE
Green
Red
White
Black
PE
L2 L3
U
E
V W
MOTOR
0
L1
PE
L2 L3
PE
Green
U
V W
Z
X Y
Thermal protector cable
Red
White
Black
Red
White
Black
White
Black
0
L1
PE
L2 L3
PE
Thermal protector cable
MOTOR
Green
Red
White
Black
Red
White
Black
White
Black
U
V W
Z
X Y
200V Class
200V Class