| Customization: | Available |
|---|---|
| Certification: | ISO9001, CCC, Type Test |
| Protection: | IP20 |
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The soft starting device is used to control the starting of high-voltage AC motor. Its main composition is the three-phase anti parallel thyristor assembly and its electronic control device connected between the power supply and the controlled motor. Shvsf series high-voltage solid-state soft starting device is composed of multiple thyristors in series and parallel. The output voltage is controlled by controlling the trigger angle of thyristors, which can meet the requirements of different voltages and currents during motor starting. In the process of motor starting, shvsf series high-voltage solid-state soft starting device increases the terminal voltage of the motor according to the preset starting curve to make the motor accelerate smoothly, so as to reduce the electrical and mechanical impact of motor starting on power grid, motor and connected equipment. When the motor starts up to the normal speed, the bypass vacuum contactor or circuit breaker is connected, and the motor starts up. During the operation of the motor, the soft starting device continues to monitor the motor, measure the motor current and voltage in real time, and provide various relay protection functions.
Air blower
| category | explain |
| AC voltage | AC3KV/6KV/10KV , ±10%-15%; |
| Load type | Three phase high voltage AC asynchronous motor |
| frequency | 50 Hz±2Hz |
| Composition of main circuit | 3KV,12SCRS; 6KV,18SCRS; 10KV ,30SCRS; |
| Instantaneous overvoltage protection | Voltage equalizing protector and resistance capacitance absorption network |
| Cooling mode | Natural cooling |
| bypass contactor | Contactor with straight lifting capacity |
| control mode | Three wire system |
| environment condition | Ambient temperature: -10-40ºC , Altitude: No more than1000m, Relative humidity: No more than85% |
When the soft start device detects the external start command, when the microprocessor detects the synchronization signal, it controls the thyristor phase angle trigger of the main circuit to gradually increase the current and voltage at the motor end, so as to start the motor smoothly. In this process, the RC resistance capacitance absorption unit absorbs the peak voltage when the thyristor is turned off in reverse; The voltage equalizing resistor controls the thyristor voltage to ensure that the voltage of each thyristor in the series circuit is equal. The optical fiber trigger ensures the electrical isolation between the controller and the high-voltage thyristor, and ensures that the trigger signal is not subject to electromagnetic interference.
1) Overvoltage protection and undervoltage protection: when the voltage exceeds the set voltage value and time limit, the protection acts and sends a signal.
2) Starting overcurrent protection: when the current is too large during starting and exceeds the set current value and time limit, the protection acts and sends a signal.
3) Operation overcurrent protection: when the current is too large during operation and exceeds the set current value and time limit, the protection acts and sends a signal.
4) Current imbalance: the three-phase current imbalance will lead to motor jitter and heating. The three-phase current imbalance value exceeds the set value and time limit, and the protection action will be accompanied by signals.
5) Starting timeout: when the motor starting time exceeds the set time limit, the protection action will send a signal concurrently.
6) Overload protection: in case of overload during motor operation, the motor operation current exceeds the overload current value and time limit, and the protection action is accompanied by signal.
7) Under load protection: in case of under load or load loss during motor operation, the motor operation current is lower than the value and time limit of over-load and under load current, and the protection action is accompanied by signal.
8)Thyristor short circuit protection: after a thyristor breaks down, the protection action is accompanied by a signal.
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Sanhe has specialized in over 20 years experience in power quality products and solution. We have met most of power quality problems and gave the solutions.
What kind of technical service does Sanhe provide?
• Project-site power quality test ( or test report from customer)
• Improvement solution and budget
• Product solution and price
• Products supply
• Product commissioning
What kinds of standards does Sanhe product conform to?
Except China standards, Sanhe products also conform to IEC standards including
IEC61921 :2003 IEC61000-4-5:2005
IEC60529:2001 IEC60931-1: 1996
IEC60439-1 :2005 IEC60664-1 2007
IEC60831-1: 1996 IEC61000-4-3/2/4/5/18 IEC61000-2-4
IEC60255 IEC62208 2011…
IEC255-22-1
What is the compensation effect after using Sanhe products?
• Harmonic filtering meets standard
• Power factor is over 0.95,electrical bill saving,low reactive power penalty killing
• Reducing the loss of transformer and line
improve the distribution ability,
prolong the lifespan of electrical equipment
How long is the product guarantee time?
Usually,the guarantee time is one year. However,we can accept over 5 years too. Please contact our sales to get details information.
How to become the distributor or agent of Sanhe brand products?
Sanhe is looking for overseas distributor and agent. If you are interested in it, please feel free to contact us.
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