Westpow STR.B Series User Manual

STR STR
Figure 3-2
Hot Air Out
Hot Air Out
Figure 3-3
Hot Air Out
Hot Air Out
Soft starter
Ventilation
Cool Air in
4 Operating Principle4 Operating Principle
380V / 660V/1140V380V / 660V/1140V
There are three pairs of anti-parallel thyristors connected to the stator of
motor. Using the electric switch feature of the thyristors, the voltage of the
motor can be controlled by changing the triggering angel of the thyristors.
The triggering angel of the thyristors is controlled by microprocessor. So
the motor can be started softer and smooth. After the equipment is up to
full voltage, it outputs a bypass signal. User can use this signal to control
the bypass contactor to supply the motor. See figure4-1.
There are three pairs of anti-parallel thyristors connected to the stator of
motor. Using the electric switch feature of the thyristors, the voltage of the
motor can be controlled by changing the triggering angel of the thyristors.
The triggering angel of the thyristors is controlled by microprocessor. So
the motor can be started softer and smooth. After the equipment is up to
full voltage, it outputs a bypass signal. User can use this signal to control
the bypass contactor to supply the motor. See figure4-1.
Voltage testVoltage test
Drive circuitDrive circuit
Current testCurrent test
MotorMotor
Figure 4-1
06
OPERATION
MENU
07
OPERATION
MENU
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Westpow STR.B Series Specifications

General

Brand	Westpow
Model	STR.B Series
Category	Controller
Language	English