Current Range and Connection Mode Selection of Motor Overload Protector
Wiring mode selection of main circuit of Motor overload protector
The main current connection mode is divided into:
1, Primary core-piercing type (peripheral current transformer secondary circuit can also be used)
2, the terminal type (can also use the peripheral current transformer secondary circuit)
3, Direct insertion
The one-time core-piercing connection is convenient and safe, and avoids the contact resistance heating caused by poor contact of the connection post. The rated current value of the motor is above 5A. Generally, one-time core-piercing wiring can be used.
Direct insertion connection mode is convenient, especially for those small space, suitable for installation position, the use of insertion protector can be directly connected with the main contact of the contactor output.
Motor Overload protector setting current range selection
In order to adapt to the selection of different power motors, the protector basically has a certain current adjustment range. When selecting the protector, select the value of the middle area of the set current range as much as possible according to the rated current value of the motor.
Motor Overload protector working power supply selection
The working power supply is mainly for the internal circuit of the protector. Except for the working power type, the working power level is generally divided into:
AC380V, 220V, 110V, 36V.
There is no special requirement for the working power supply, because it is an independent power supply unit, the user only needs to choose according to the motor control circuit voltage level.
The main current connection mode is divided into:
1, Primary core-piercing type (peripheral current transformer secondary circuit can also be used)
2, the terminal type (can also use the peripheral current transformer secondary circuit)
3, Direct insertion
The one-time core-piercing connection is convenient and safe, and avoids the contact resistance heating caused by poor contact of the connection post. The rated current value of the motor is above 5A. Generally, one-time core-piercing wiring can be used.
Direct insertion connection mode is convenient, especially for those small space, suitable for installation position, the use of insertion protector can be directly connected with the main contact of the contactor output.
Motor Overload protector setting current range selection
In order to adapt to the selection of different power motors, the protector basically has a certain current adjustment range. When selecting the protector, select the value of the middle area of the set current range as much as possible according to the rated current value of the motor.
Motor Overload protector working power supply selection
The working power supply is mainly for the internal circuit of the protector. Except for the working power type, the working power level is generally divided into:
AC380V, 220V, 110V, 36V.
There is no special requirement for the working power supply, because it is an independent power supply unit, the user only needs to choose according to the motor control circuit voltage level.
