3-5
Danger
Securely connect the terminals of the power cable. Loose terminals may
cause an open phase fault, which causes the motor to burn out.
(1) For the size of the power cable, refer to the following:
Model
Minimum size of the cable
(200-volt class)
All models
1.6mm
(2) Be sure to install a ground fault interrupter and an overload protection device on the primary
power side of the pump.
* The starting current of the premium efficiency (IE3) motor-equipped product tends to become
higher than that of the standard efficiency (IE1) motor-equipped product. Therefore, it is necessary
to apply and verify an earth leakage circuit breaker and overload protection device on the
occasion of replacement from the IE1 motor-equipped product.
Refer to Starting current value and Rated current value in “2.5. Specification table (page 2-4).” If
you have any questions, contact Teral Inc.
Note
It is necessary to apply and verify a protective device on the primary side of
the pump on the occasion of replacement from the IE1 motor-equipped
product.
If not applied, the protective device may operate at the time of startup.
(3) When connecting to terminals, securely connect to the power
according to the right figure. (Standard voltage product)
* If there are four or more terminals, follow the connection
nameplate in the terminal box.
(4) Be sure to attach a ground wire to prevent an electric shock.
Connect the ground wire to the ground terminal inside the
control panel.
(5) Fasten the power cable to the terminal box with a cable lock so
that no tensile load acts on the motor terminal block.
(6) The position of the terminal box relative to the discharge port
can be changed in steps of 90 degrees by rearranging the frame
of the motor.
If you rearrange the frame of the motor, ask Teral Inc. about the
operating procedures.
Warning
Do not change the orientation of the terminal box.
Failure to observe this may cause the liquid to get into the terminal box,
thus imparting an electric shock.
(7) To prevent the motor from being overloaded and burned out, it is recommended to use a thermal
relay for motor protection.
(8) Carry out adequate dust-proofing and drip-proofing by a connector or gland so that cutting powder
and liquid coolant do not get into the terminal box through the external wiring hole.
Warning
Connecting a ground wire to gas or water pipes is
illegal and extremely dangerous.
Layout in the terminal box
Motor terminal
Power terminal
Ground terminal
M5
M5
M4
Standard orientation
of terminal box
Cable outlet
Discharge port
