Overview
The series of liquid resistance starters is a new generation of starting control device successfully developed in order to further improve the starting performance of large and medium-sized wound asynchronous motors. It is connected in series to the rotor circuit of the controlled motor. The liquid resistor is automatically put in when the motor is started and automatically, steplessly and continuously cut off within a predetermined time, overcoming the large impact current of old-fashioned starting control equipment such as frequency-sensitive rheostat, oil-immersed rheostat, cast iron rheostat, etc. (generally about the rated current
~
The motor starts smoothly and speeds up evenly under ideal starting current conditions, which has significant effects on protecting the motor, electrical equipment, power grid and energy saving. The equipment is carefully designed in terms of starting, stopping, fault protection, communication, alarm, display, etc. Compared with other old-fashioned starters, it has a high degree of automation, small starting current (generally less than times of the rated current), and electrical It has the characteristics of small mechanical impact and is particularly suitable for heavy-load starting. It can start smoothly even with low grid voltage, which reduces the capacity of the transformer. It is currently the most ideal for heavy loads such as ball mills, elevators, crushers, compressors, fans, and water pumps. Starting control equipment.
Performance characteristics
The performance is much better than frequency-sensitive rheostat, oil-immersed rheostat, cast iron resistor and other starters.
The starting current is small , less than
times the rated current of the motor.
, can be started continuously
~
times.
, smooth starting has no mechanical impact on the equipment Stress shock can extend the life of mechanical equipment and motors.
,
Can be started at low voltage
KiV motor
KV,
V motor
Voltage can start smoothly.
Simple and reliable structure, all operations are automated, and easy to install and maintain.
Technical parameters
, Controlled motor power< br/>～
, controlled motor rotor current
～
, controlled motor rotor voltage
～
, normal operating temperature of electro-hydraulic
～
℃
, number of consecutive starts
～
times
, starting current< br/>
(
is the rated current of the motor)
, three-phase power supply voltage
,
.
YRQ series high and low voltage winding motor liquid resistance soft start cabinet