Product overview
High-voltage solid-state soft starter, also known as medium-high voltage solid-state soft starter, is a new type of medium-high voltage motor soft starter, which is mainly suitable for medium-high voltage AC motors below 10KV. It adopts advanced DSP control technology and power electronics technology, and its main components are three relatively parallel gates connected between the power supply and the controlled motor and their electronic control circuits. By using different methods to control the opening angles of three relatively parallel gates, the input voltage of the controlled motor can be changed according to different requirements, and different functions can be realized.
Performance characteristics
Adopting imported series thyristors and professional insulating materials combined with modern power electronic control technology, it is professionally designed and manufactured. The high-voltage solid-state soft starting device is suitable for the characteristics and characteristics of large and medium-sized motors.
High reliability
The main circuit of the device adopts modular structure and installation mode, and has multiple overvoltage absorption and protection technologies. Multi-layer clipping is adopted for transient dv/dt, lightning impulse voltage, operating wave overvoltage and transient transition process, and unique measures and methods are adopted for di/dt, voltage equalization when valve is opened and closed.
Perfect isolation of strong and weak current
High anti-interference digital trigger and optical fiber isolation or CT isolation transmission technology are adopted to avoid the mutual interference between strong and weak electricity, making the high-voltage performance of the device as safe and reliable as that of the low-voltage device. The unique fault detection and judgment system can quickly transmit the detection results to the control circuit, give an audible and visual alarm and take corresponding measures at any time to prevent the fault from expanding.
The efficiency of high-voltage soft starter is as high as > 96% (up to 97%), which is much higher than other soft starters.
A variety of perfect protection functions
Short-circuit, overcurrent, current limiting, overvoltage, undervoltage, overload, phase loss, three-phase current imbalance, overheating, communication failure and other fault state alarm timely processing protection, protection of soft starter and motor. The unique heat dissipation and design effectively cool the thyristor components. A variety of optional soft start functions, including standard soft start, constant current soft start, double voltage ramp start, soft start with jump function, etc. It has the characteristics of small volume, low power consumption, high sensitivity, no contact and convenient installation.
Conditions of use Ambient temperature:-40℃ ~+50℃
The relative temperature of air does not exceed 90%
The altitude does not exceed 2000m (above 2000m, it can be specially designed according to specific working conditions).
Maximum working voltage shall not exceed 110% of rated voltage.
Power frequency: 50Hz/60Hz+2Hz
Advantage introduction
1.reduce the starting current of the motor, can avoid the power supply voltage drop, voltage drop. Reduce distribution capacity and avoid investment in capacity increase.
2.Reduce the starting stress and prolong the service life of the motor and related equipment. Save maintenance costs and a lot of money.
3.Smooth start and soft stop, avoiding the surge problem and water hammer effect of traditional start-up equipment;
4.a variety of starting methods and a wide range of current and voltage settings, which can adapt to a variety of load occasions and improve process performance.
5.Improve the reliable protection function and protect the safety of the motor and related equipment more effectively.
6.It can be started and stopped frequently, so that one machine can be used for multiple purposes and the equipment procurement cost can be reduced.
Typical application
Water pump: the water pump control function is adopted to reduce the water hammer phenomenon caused by the flow generated by the water pump when starting and stopping, thus saving the system maintenance cost;
Ball mill: voltage ramp starting is adopted to reduce the wear of gear torque, reduce the maintenance workload and prolong the service life;
Fan: solid soft starter is used to replace traditional starter to reduce belt wear and mechanical impact;
Compressor: adopt current limiting to realize smooth start and reduce motor temperature rise;
Crusher: adopt locked-rotor protection and quick protection device to avoid mechanical failure and blockage caused by overheating and burning of motor;
Conveying machinery: soft start and soft stop control are adopted to realize smooth and gradual start-up process and smooth and slow down stop process, so as to avoid damage to materials and equipment caused by impact.
Performance parameter
●Main technical indicators
Load type: three-phase asynchronous or synchronous motor
Working voltage: 2.3-13.8KV
Power range: 160-6000KW
Continuous operation with 115% overload, digital microprocessor control with 500% overload for 1-10 seconds and 850% overload for 0.5-5 seconds, liquid crystal display, starting overload and operation overload two-level protection, optical fiber isolation for low-voltage control unit and high-voltage part, mechanical and electronic safety interlock device and MCC terminal block (terminal block of electromechanical control center). Auxiliary relay: multi-channel C-type dry relay 5A 240V AC programmable relay output, and various data statistics during operation.
Ambient temperature: 0-50℃
Altitude: 0-1000m
Relative humidity: 5-95%
●Adjustable parameters
Motor full load current adjustable
Double slope adjustment-two independent set points
Initial voltage: 10-50% line voltage
Current limit: 100-400% of the rated current of the motor.
Acceleration time: 1-30 seconds (can be extended to 90 seconds)
Soft stop time: 1-30 seconds (can be extended to 90 seconds)
Four kinds of water pump control curves
Speed closed-loop soft start control
Pulse conflict start: 0.1-1.0 seconds (80% line voltage)
Startup times per hour locking: 1-4 times
●Communication interfaces and protocols
RS485-Modbus、RS485-Profibus
