Products
SCKR1-3000 Series bypass soft starter
Product overview
Sckr1-3000 series intelligent motor soft starter is a new type of motor starting equipment developed and produced by power electronic technology, microprocessor technology and modern control theory technology, which can be widely used in heavy load equipment such as fans, pumps, conveyors and compressors.
Product details
SCKR1-3000 series intelligent soft starter motors are widely used in power, metallurgy, petroleum, petrochemicals and mines.
—Water pump - use soft stop function to alleviate water hammer phenomenon of the pump when stopped.
—Ball mill - use voltage slope to start, reduce wear of gear torque.
—Fan - reduces belt wear and initial impact, saving maintenance costs;
—Compressor - by limiting current, realize smooth start and reduce motor heating
Technical feature
One motor soft starter starts motor loads of different power;
Dynamic fault memory function, easy to find the cause of the fault;
Overcurrent, overheat, missing phase, motor overload and other comprehensive motor protection functions;
Powerful software functions to meet the changing needs of industryoccasions;
Compact structure design, easy to install, easy to use;
User-friendly operation mode, display interface can be flexible choice: LED or LCD display.
Profibus/Modbus two conmunication for you choice
Product technical features
Main loop operating voltage: AC380~1140V(-10%~+15%);
Main loop operating current: 11A%~1500A;
The phone will automatically: 50Hz/60Hz(±2%);
Soft start rise time: 2~60s;
Soft stop time: 2~60s;
Current limiting factor: 1.5~5.0Ie;
initial voltage: 30%~70%Ue;
Cooling mode: natural cooling;
Communication mode: RS485 serial communication;
Starting t
imes: ≤10 times/hour
Model selection definition
The relation between altitude and output derating
Notes for model selection
The soft starter must provide a torque greater than the load resistance torque to complete starting
If the cold state with 3 times the limit current, allow to start 40 seconds;
When cycle starting, start 10 times per hour, 3 times current is allowed to start for 25 seconds,
For heavy load, such as ball mill, fan and so on, it is allowed to start 5 times per hour.Current limit as above, protectionThe level is set to 20.
Envirment condition
Operating principle
The soft starter of SCKR1-3000 motor USES the electronic switch of the thyristor to change the conduction Angle of the thyristor by controlling the change of its trigger Angle th rough the microprocessor, thus changing the input voltage, so as to control the soft stag of the motor cont~lthe motor the microprocessor
Voltage mode
The graph on the left gives the output voltage waveform for voltage ramp starting.The U1 is the initial voltage value when starting, when the motor starting, within the scope of the electric current shall not exceed the rating of 400%, the soft starter output voltage rise rapidly to the U1, then output voltage according to the starting parameters set by gradually increases, the motor with the smooth acceleration, the rise of the voltage when the voltage at rated voltage Ue, motor to achieve rated speed, the bypass contactor and, starting process is complete.
Current-limiting starting
Tthe left figure shows the current waveform of the motor in the limited current starting mode.Including 1 I starting current limit value for setting, when the motor starting, the rapid increase of the output voltage until the motor current to achieve the current limit value Ⅰ 1 set, rapid drop in output current to the rated current of motor or below, Ie starting process is complete.
