Static Transfer Switch | <2ms Switching, 99.999% Uptime

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Uninterrupted Power with Precision Static Transfer Switch Solutions

Uninterrupted Power with Precision Static Transfer Switch Solutions

ZHNYU Electric, with over 34 years of expertise in electrical manufacturing, delivers static transfer switches engineered for mission-critical power continuity. Our static transfer switch technology ensures seamless load transfers between two independent power sources, achieving transfer times under 2 milliseconds—far below the typical 10-millisecond threshold for sensitive electronics. In industries like data centers, financial services, and healthcare, even a brief power interruption can result in data loss, equipment damage, or compromised patient safety. That's why our static transfer switches are designed with redundant thyristor-based switching, providing 99.999% uptime assurance.
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Case Study

Protecting Financial Data Center in Singapore

In 2021, a leading financial institution in Singapore faced recurrent voltage sags from their primary utility, causing intermittent downtime in their trading servers. ZHNYU Electric's static transfer switch (STS) was integrated into their dual-bus architecture. Within three months, the STS successfully transferred loads 47 times due to utility fluctuations, with zero transaction losses. The client reported a 99.999% uptime improvement and a 25% reduction in operational costs related to manual switching and equipment wear. The fast transfer and isolation capabilities of our STS proved crucial for maintaining high-frequency trading operations.

Ensuring Reliability for Healthcare Campus in Germany

A German hospital network needed to protect critical imaging and life-support systems from power interruptions. They deployed ZHNYU static transfer switches across three campuses. Within the first year, the STS systems performed 120 automatic transfers during grid disturbances, with transfer times consistently under 2 milliseconds—well within the tolerance of sensitive MRI machines. The hospital reported no equipment malfunctions caused by power switching, improving patient care and reducing insurance premiums by 12%. The hospital’s facilities director highlighted the reliability and ease of integration, emphasizing how the STS solution provided a robust safety net.

Enhancing Production Uptime in Petrochemical Plant in UAE

A major petrochemical plant in the UAE experienced nuisance tripping of control systems due to generator transfer delays. They installed ZHNYU static transfer switches on critical control looms. Over a six-month period, the STS executed 85 seamless transfers during generator tests and utility failures, preventing process shutdowns and potential safety incidents. This resulted in a 15% increase in overall plant availability and saved an estimated $1.2 million in lost production. The plant’s engineering team praised the STS for its precise voltage synchronization and minimal maintenance requirements.

Related products

For over three decades, ZHNYU Electric has been a cornerstone in the low-voltage electrical industry, manufacturing high-quality components for power distribution, industrial control, and new energy applications. Our static transfer switch (STS) product line represents the pinnacle of our engineering capabilities, designed to meet the rigorous demands of modern power systems where reliability is non-negotiable. In an era where digital economies, automated industries, and life-critical applications depend on a continuous power supply, the need for robust transfer switching technology has never been greater.

Frequently Asked Questions

What is a static transfer switch and how does it work?

A static transfer switch (STS) is an electrical device that automatically transfers a load between two independent power sources without interruption. It uses solid-state semiconductors, like thyristors, to switch the load within milliseconds when the primary source fails or deviates from acceptable voltage/frequency. Our STS continuously monitors both sources and switches instantly to the alternate source if the primary is not stable, ensuring a continuous power supply.
The transfer time of a static transfer switch is crucial for sensitive loads. Our STS achieves transfer times of less than 2 milliseconds, which is much faster than electromechanical switches (50-100 ms). This rapid transfer ensures no interruption to connected equipment, protecting against data loss or damage in critical applications like data centers.
Static transfer switches are ideal for any application where continuous power is critical, including data centers, hospitals, industrial process control, and broadcasting stations. They are also used in power distribution systems for emergency lighting and security systems. Our STS range covers a wide current range, making them suitable for both small and large installations.
Our static transfer switches are certified with CE, CCC, and ISO9001. They also comply with RoHS directives for environmental safety. We ensure that every unit is tested under strict quality controls in our 10,000-square-meter facility, using advanced production equipment, to guarantee compliance and performance.

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Customer Testimonials

Michael Johnson
Reliable and Efficient Power Transfer

We deployed ZHNYU Electric's static transfer switches in our data center, and the result has been flawless. The transfer time is incredibly fast, and we've had zero downtime since installation. Their technical team also provided excellent support during integration. Highly recommended!

Sarah Müller
Excellent Product Quality and Service

As an electrical contractor, we have used various transfer switches. The static transfer switches from ZHNYU stand out for their build quality and robust performance. They survived our rigorous testing and worked seamlessly in a hospital project, ensuring continuous power for critical equipment. Great value for money.

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Unmatched Transfer Speed for Critical Power

Unmatched Transfer Speed for Critical Power

In the world of critical power protection, time is measured in milliseconds. ZHNYU Electric's static transfer switch (STS) leads the industry with an unmatched transfer time of under 2 milliseconds. This ultra-fast switching capability ensures that loads connected to sensitive electronic equipment experience no voltage dips or transients during source transitions. For example, in a financial trading floor, any interruption can cause significant losses; our STS minimizes that risk to virtually zero. Data from our global installations shows a 99.9% reduction in power-related incidents. This speed is achieved through advanced thyristor control algorithms that continuously monitor both power sources and initiate transfer within microseconds of detecting an anomaly.
Rigorous Quality Assurance and Global Certifications

Rigorous Quality Assurance and Global Certifications

ZHNYU Electric's static transfer switches are manufactured in a facility that spans over 10,000 square meters and is equipped with more than 100 advanced production machines. This significant investment in manufacturing capability ensures that every STS unit is fabricated with precision and consistency. Our quality management system is ISO9001:2015 certified, and our products meet the requirements of CCC, CE, and RoHS directives. Each STS undergoes comprehensive testing, including full-load burn-in tests, thermal cycling, and electrical endurance tests, to ensure it can operate reliably for more than 15 years. In addition, we use only high-grade materials, such as UL94V-0 flame-retardant plastics and silver-alloy contacts, to enhance safety and longevity.