ST130s ST150s phase control thyristor for motor controls

Overview of Phase Control Thyristor

A phase control thyristor, often referred to as a triac or SCR (Silicon Controlled Rectifier) in certain applications, is a semiconductor device used for controlling the amount of power delivered to a load by adjusting the phase angle at which the AC waveform is allowed to conduct. This method of control is known as phase angle control or simply phase control. Phase control thyristors are widely used in various applications that require precise regulation of electrical power, such as lighting dimmers, motor speed controls, temperature controllers, and more.

Features of Phase Control Thyristor

Phase Angle Control: Allows adjustment of the conduction point within each half-cycle of the AC waveform, enabling precise control over the average power delivered to the load.

High Efficiency: Operates with minimal losses when conducting, providing efficient power control.

Bidirectional Conductivity (Triacs): For AC applications, triacs can conduct current in both directions, making them suitable for full-wave control of AC loads.

Unidirectional Conductivity (SCRs): SCRs conduct current in one direction only and are typically used for half-wave control of AC or DC loads.

Gate Triggering: Conduction begins when a small current is applied to the gate terminal, allowing for easy control of the turn-on point.

Latching Current: Once triggered, the thyristor continues to conduct until the current through it falls below a certain level called the holding current.

Temperature Sensitivity: Performance can be affected by temperature changes, requiring thermal management considerations in design.

Voltage and Current Ratings: Available in a wide range of voltage and current ratings to suit different application needs.

Noise Generation: Can generate electromagnetic interference (EMI), necessitating proper filtering and shielding in sensitive applications.

Protection Mechanisms: Often include built-in protection against overvoltage and overcurrent conditions to safeguard the device and connected systems.

(ST130s ST150s phase control thyristor for motor controls)

Specification of ST130s ST150s phase control thyristor for motor controls

The ST130s and ST130s phase control thyristors are built for tough motor control jobs. They handle high voltage and high current reliably. These thyristors manage AC power smoothly in motor starters, soft starters, and speed controllers.

Look at the voltage ratings first. Both types block high reverse voltage. They also block high forward voltage when turned off. This high blocking voltage is vital for industrial motor circuits. It protects against power surges.

Current handling is strong. The ST130s carries a big average current on-state. The ST150s handles even more current. Both manage large surge currents without damage. This matters when motors start or stall. High surge current tolerance prevents failures.

Thermal performance is good. The thermal resistance from junction to case is low. This means heat escapes quickly. Keeping the junction cool extends the thyristor’s life. Good thermal design is essential for motor drives running long hours.

These thyristors switch on fast. The gate trigger current needed is low. This makes them easy to drive with control circuits. They turn off reliably too. The circuit commutates them safely. Fast, reliable switching ensures precise motor speed control.

They are tough electrically. High critical rates of voltage rise mean less false triggering. High critical rates of current rise handle tough turn-on conditions. This electrical ruggedness suits demanding motor environments. Voltage spikes and noise are common there.

The package is standard. It mounts easily to a heatsink. Efficient cooling is straightforward. This design supports continuous operation in motor control cabinets. Reliability is key for reducing downtime.

(ST130s ST150s phase control thyristor for motor controls)

Applications of ST130s ST150s phase control thyristor for motor controls

The ST130s and ST130s phase control thyristors handle motor power control well. These components manage the AC power flow to motors. They work by switching the power on at specific points in the AC voltage cycle. This controls the average voltage delivered to the motor. Lower average voltage means slower motor speed. Higher average voltage means faster motor speed. This method gives smooth speed adjustment.

These thyristors suit many motor types. They control AC induction motors effectively. They also work with universal motors. These motors are common in power tools. The thyristors manage the power reliably. They handle high surge currents during motor start-up. This prevents damage. They ensure stable operation under varying loads. This is vital for industrial equipment.

Using these thyristors offers key benefits. Precise speed control improves process accuracy. Reducing motor speed saves significant energy. Less heat builds up in the motor. This extends the motor’s working life. The thyristors themselves are robust. They tolerate tough electrical conditions. They work in demanding environments.

You find these thyristors in many applications. Industrial fans use them for airflow control. Conveyor belt systems adjust speed with them. Machine tools rely on them for spindle regulation. They control pumps in water systems. They manage mixers in food processing. Power drills and saws benefit from their variable speed. Even home appliances like vacuum cleaners use similar control.

Company Profile

PDDN Photoelectron Technology Co., Ltd.(sales@pddn.com) is one of the leading enterprises in power electronics technology and power products, which is fully involved in developing solar inverters， transformers, voltage regulators, distribution cabinets, thyristors， modules， diodes， heaters, and other electronic devices or semiconductors. We will be committed to providing users with high-quality, efficient products and considerate service.

It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. If you want high-quality ST130s ST150s phase control thyristor for motor controls, please send us inquiries; we will be here to help you.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment

By sea, by air, by express, as customers request.

Storage Conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

5 FAQs of ST130s ST150s phase control thyristor for motor controls

What are ST130s and ST150s thyristors?
These are specific power semiconductor devices. They act like high-speed switches. They control electrical power flow in AC circuits. They are built for motor control applications. They handle high currents and voltages reliably.

How do they control motor speed?
They use phase control. This method adjusts the point in the AC voltage wave where the thyristor turns on. Turning on later in the wave cuts the power delivered to the motor. Less power means slower motor speed. Turning on earlier gives more power and faster speed. This is smooth control.

Why use thyristors for motor control?
Thyristors are very efficient. They waste little power as heat. They react extremely fast. This gives precise motor speed adjustment. They are physically robust. They last a long time in tough conditions. They are cost-effective for industrial use.

ST130s or ST150s – which one fits?
The main difference is current rating. ST130s handle lower currents. ST150s manage higher currents. Check your motor’s full load current. Choose the thyristor rated above that current. Consider your safety margins. ST150s offer more headroom for demanding starts or heavy loads.

How are they installed and cooled?
Mount them firmly on a heatsink. Use thermal paste. This ensures good heat transfer. Overheating destroys thyristors. The heatsink size depends on your motor power. Bigger motors need bigger heatsinks. Follow the manufacturer’s mounting instructions exactly. Proper electrical connections are vital.

(ST130s ST150s phase control thyristor for motor controls)