Description
For starting a slip ring motor, the torque acceleration is typically higher than the torque resistance. This higher is inevitable. The starter process will be very long and can damage the engine by warming up. If the motor starts directly and without a starter:
The absorption current will be very high during the starter engine, which will cause drop voltage and result in irreparable damage to Power grid.
Starting torque is very high. This torque is transmitted by the engine shaft to the driven system and causes it to break.
To reduce the initial current and torque, it is necessary to reduce the motor’s additional voltage.
SMP liquid starters are used for inserting external resistance in slip ring (wound rotor) induction motors in order to reduce starting current and increase starting torque. It will supply the power necessary to drive the motor by resistance variation in various industries.
SMP Liquid Starter Resistance a various size and various resistance for motors from 1000KW up to 10000KW. Wound rotor control for demanding industrial applications from 800 kW to 10 MW.
These starter types consist of two main parts: the control section and the power section.
The control section includes:
Breaker keys
Miniature fuses
Contactors
Mini PLC
Stepper chassis
Starting chassis
central and Local Selector Key
Thermocouple PT100
Heater of the control panel
Signal lights
Digital Thermometer
Engine and gearbox 1:15
Frequency control FC
Digital thermostat
Level switches
Circulating pump
The power section includes:
Power contactors and their bus bars
Carriages and mobile connectors
Carriages and fixed connectors
Connecting rods
Insulated rods
Epoxies
Electrodes
The electrodes of these starter units are made steel sheets.
Fixed electrodes are mounted on epoxy insulators and connected to the main terminals. Mobile electrodes are also short-circuited. If required, it is also possible to supply stainless steel electrodes.
APPLICATION
Suitable for using with wide range of heavy industrial machines such as; Cement and hammer mills, fans and compressors, crushing, ventilation, pumps, shredders, rolling mills, wood grinders, boiler feed pumps, pony motors for gas turbines, test stands.
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