Product Application
Industrial equipment and facility are subject to the threat of high energy transients generated by lightning strikes or the switching of heavy inductive loads. High energy transients can damage valuable equipment and cause problems, including power supply failures, process interruptions, and facility downtime. Therefore, high energy surge protection is necessary for sensitive industrial equipment operating in a harsh environment to minimize production disruptions and ensure the facility's continuous operations. THINKING's expertise in circuit protection enables us to provide the following over-voltage and over-current circuit protection devices that prevent industrial equipment damage due to the transient surge.
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THINKING TVA series is high energy Metal Oxide Varistors (MOVs). The component is designed to absorb high-surge energy produced by a lightning strike and inductive load switching. The series is available in various forms and sizes and offers a wide range of current and energy-handling capabilities.
For meeting the need of a Class I surge protective device (SPD), TVA34 offers a high surge current capability of 12.5KA and 15KA (Iimp 10/350 µs). Furthermore, THINKING offers various structures of the TVA34 series, including the screw-fasten terminal type, for satisfying customers’ design needs.
The TVT series (Ф14mm and Ф20mm) is a thermally protected Metal Oxide Varistor from THINKING. The device is comprised of MOV with a thermal fuse element designed to open when overheating occurs due to overvoltage conditions. There are two-terminal and three-terminal versions of the device. The inclusion of a third monitor lead helps indicate whether the MOV has been disconnected from the power circuit or not, making the device fail-safe.
Both the TVA and TVT series are suitable for applying to the commercial and industrial power systems of 150VAC, 275VAC, 320VAC, 420VAC, and 550VAC. They are recommended for the following applications because of their high-energy absorption capabilities:
‧ Outdoor AC mains of 5G base station, railway system, photovoltaic system, and water treatment plant
‧ Switchgear, distribution panels, local backup power, and power distribution unit
‧ Heavy motor, control, and power supplies used in heavy industries such as machinery manufacturing, oil-drilling and mining
‧ Elevator/ escalator control system, HVAC, and building management systems
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TVR series is metal oxide varistor from THINKING. The component provides a wide range of operating voltage, and is with high surge protection capability. It is widely used in industrial equipement, motor and control appliations.
TVR-U, is the new ultra high surge type varistor of THINKING. Body sizes of TVR-U series are Ф10mm and Ф14mm, and their 8/20μs high surge current (Imax) are 6,000A and 10,000A, respectively. Max. continuous voltage of the components ranges from 150Vac~680Vac (200Vdc~895Vdc). The aforementioned information indicates that electrical performances of Ф10mm and Ф14mm components are equivalent to Ф14mm and Ф20mm varistors in the market. Therefore, Ф10mm component reduces 30% installation space, and space reduction of Ф14mm product is 45%. In addition, operating temperature of most varistors is 105℃. TVR-U series goes beyond this limit and is able to operate under 125℃ environment because of its adoption of new generation coating material.
- TVR-U series is recommended for the following industrial applications
- ● Industrial power supply: switch mode power supply, charger, UPS
- ● Energy saving equipment: solar inverter, energy storage system
- ● Industrial product: digital multimeter, DC-DC converter, inverter, controller
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The TVB Series is a plastic-encapsulated surface mount varistor. The series features low profile design with high surge current withstanding capability to help customer save PCB space, and is available for IR-reflow soldering. Its surface mounted structure is recommended for automatic insertion of customer’s production, and which helps increase customer’s production efficiency.
The newly launched TVBDS and TVBES series are suitable for the power and control boards with limited PCB height, offering an elevated level of surge protection in terms of performance. The Electrical performance of the TVBES series is equivalent to THINKING leaded type MOV (TVR14 series), but its height above PCB is 1/3 of that of the TVR14 series. Similarly, the electrical performance of the TVBDS is equivalent to the leaded type TVR10 series, and its height above PCB is only 40% of TVR10 series.
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GDT is featured with high insulation resistance, very low capacitance, and large surge current handling capabilities. These features make GDT an optimal choice for protecting industrial AC line against lightning and other power surges. Furthermore, combining GDT with varistor delivers a more effective and robust protection solution against power line transient.
THINKING GDT is available in various surface mount and leaded configurations and in a wide range of DC spark-over voltages to meet the needs of a broad range of applications. Below is a table of recommended products for power line surge protection.
SCH series is THINKING high power NTC thermistor for inrush current limiting. With features of high power and small size, SCH series is suitable for high power industrial applications with limited installation space, such as high power switching mode power supply (SMPS), uninterruptible power supply (UPS), power conversion equipment, motor drive system, and smart low-voltage power distribution unit.
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When comparing with our standard inrush current limiter, SCK series, SCH series offers the following benefits.
- ● Electrical performance of the SCH25 series is equivalent to the SCK30 series, and it reduces installation space by 15%.
- ● Body temperature increase of the SCH series is lower than that of the SCK series, and which extends the lifespan of end applications.
- ● SCH25 and SCH30 series provide standard capacitance and high capacitance models to meet the needs of popular and niche end applications. Their standard capacitance values are 2200μF and 3000μF, and their high capacitance values are 4200μF and 5200μF, respectively.
THINKING circuit protection products are recognized by major agencies such as UL, cUL, TUV, and CQC. The agency approval conditions of products series can be found in product catalogs. If you need further information, please click here to contact us.
With more than 40 years experience in protective component industry, THINKING owns advanced manufacturing process, material development, and overall verification. Its profound experience and advanced technology enable it to offer comprehensive service and reliable protective components to assist customers in overall protection design for industrial equipment.
