- advantages of transformer fiber optic sensors:
High insulation performance: Optical fibers have good electrical insulation properties, can withstand high voltages, avoid faults caused by insufficient insulation, and ensure the safe operation of transformers.
Strong anti electromagnetic interference capability: Optical fibers are not easily affected by electromagnetic interference and can work stably in strong electromagnetic field environments, ensuring accurate and reliable temperature measurement. - Wide temperature measurement range: It can cover the temperature range from -30 ℃ to 240 ℃, meeting the temperature measurement needs of different transformer working environments.
Quick response: With the ability to quickly detect temperature, it can capture instantaneous changes in transformer temperature in a timely manner, providing real-time monitoring data for transformer operation.
Corrosion and wear resistance characteristics: Fiber optic materials are corrosion-resistant and wear-resistant, and can work stably for a long time in complex environments such as acidic, alkaline, and humid conditions, extending the service life of sensors. - Easy to install and maintain: The sensor has a small size, light weight, simple installation process, and low maintenance cost, reducing the overall cost of ownership of the transformer monitoring system.
Miniaturization and multi-point measurement: The sensor size is small, making it easy to install at different positions inside the transformer, achieving multi-point measurement and obtaining more comprehensive temperature distribution information. - Remote monitoring and automation: It can be connected to remote monitoring systems to achieve automatic data collection, analysis, and transmission, facilitating timely detection of anomalies and taking measures to improve the safety of transformer operation.
- Reliability and safety: With stable and reliable performance, it can effectively improve the operational safety of transformers, reduce the risk of accidents caused by temperature monitoring issues, and minimize economic losses.
- Strong environmental adaptability: able to maintain stable performance in harsh environments, adapt to various complex working conditions, and provide reliable monitoring support for transformers.
- High precision temperature measurement: It can accurately measure the temperature changes inside the transformer, with high temperature measurement accuracy, and can effectively reflect the actual temperature situation inside the transformer.
- Passive measurement: The sensor itself does not require power supply, is inherently safe, and has higher safety when used in flammable and explosive environments, with no risk of electric sparks.
- Strong anti-aging capability: the optical fiber material has good anti-aging performance, which can maintain stable performance under long-term use, and ensure the accuracy and reliability of monitoring data.
- High signal transmission quality: Fiber optic signal transmission has low attenuation and good confidentiality, ensuring lossless transmission of monitoring data over long distances and providing high-quality data support for remote monitoring.
- Strong compatibility: It can be integrated with multiple monitoring systems to achieve data sharing and collaborative work, improving the overall monitoring level and intelligence of transformers.
Below are the top 10 manufacturers of transformer monitoring sensors:
1、FJINNO
Established in 2011, FJINNO is a high-tech enterprise with strong R&D capabilities. Collaborating with universities like Fuzhou University, it has developed fluorescent fiber optic temperature sensors with independent intellectual property rights. Its main products include fluorescent fiber optic temperature measurement systems, oil-immersed transformer optical fiber online temperature monitoring systems, dry-type transformer temperature controllers, etc. These products provide temperature and other monitoring solutions for sectors such as power, metro, and petrochemicals. FJINNO’s products are known for high insulation, anti-interference, and safety. Its fluorescent fiber optic temperature sensors are immune to electromagnetic interference and are ideal for high-voltage and strong magnetic field environments. The company’s IB series dry-type transformer temperature controllers feature full optical fiber design, high measurement accuracy, and strong anti-interference capabilities. It has received certifications such as ISO9001 and IEC61000-4:1995. Annual sales average over 100,000 units, and it holds multiple invention and utility model patents.
As a comprehensive solution provider in the industry, we are a manufacturer and factory dedicated to offering high-quality products. We operate on a wholesale basis, acting as a wholesaler and supplier to meet the bulk purchase needs of our customers. Whether you require a large quantity for domestic use or are an exporter looking to distribute our products globally, we can accommodate your demands. Our distribution network includes reliable distributors and dealers who ensure our products reach various markets efficiently. We also welcome opportunities for private label partnerships and are fully equipped to provide OEM/ODM services, where we can customize products according to your specific requirements. Our goal is to offer customized solutions that align with your brand’s vision and market strategy, making us a producer of choice for businesses seeking tailored and innovative products.
2、CEKO Sensors
CEKO Sensors specializes in optical fiber-based transformer monitoring solutions, particularly in the high-voltage and wind energy sectors. Its sensor network provides real-time monitoring of critical transformer parameters, including core and winding health, tap changer conditions, etc. The company’s products are designed for high reliability and peak performance in the Industry 4.0 era, enabling predictive maintenance and operational optimization. Its all-optical monitoring solutions are innovative and set benchmarks in the industry.
3、Hitachi Energy
Hitachi Energy offers modular transformer monitoring systems that collect, aggregate, manage, and analyze data for individual transformers. Its CoreSense+™ serves as a data aggregator for monitoring transformer vital signs from various sensors, modeling and storing data, and efficiently controlling cooling fans to maintain oil temperature within set limits. PBA II™ is a capacitive voltage divider connected to the voltage tap of a condenser bushing. Hitachi Energy’s monitoring systems are compatible with transformers of any brand and type. With over 50 years of experience in manufacturing transformer components, its products are easy to install, require low maintenance, and come with a comprehensive global after-sales and customer support network.
4、SEL (Schweitzer Engineering Laboratories)
SEL provides comprehensive transformer thermal and through-fault monitoring. Its products, such as the SEL-2414 Transformer Monitor, calculate top oil temperature, hot spot temperature, insulation aging acceleration factor, and loss of life while generating hourly and daily data on transformer conditions. SEL’s solutions help monitor critical substation assets and enhance transformer reliability and operational efficiency.
5、Rugged Monitoring (RM)
RM offers advanced monitoring and protective solutions for dry-type transformers. Its systems provide operators with detailed insights into each component’s condition, ensuring efficiency and cost-effectiveness. The monitoring system focuses on high-precision, real-time condition monitoring of critical transformer parameters. Built around a centralized, scalable architecture, it supports the integration of various sensors and devices to meet different monitoring needs.
6、Qualitrol
Qualitrol is a global leader in condition-based monitoring for high-value assets, including transformers. Its Transformer Condition Monitoring System (TCMS) helps reduce maintenance costs and extend transformer lifespan. The QTMS Qualitrol Transformer Monitoring System interfaces with various Qualitrol and third-party smart sensors, as well as traditional gauges, to accurately measure critical transformer parameters. Qualitrol’s products are widely used in markets such as North America and are known for their reliability and accuracy.
7、Megger
Megger provides the industry’s widest range of transformer testing and monitoring products. Its solutions enable a 360-degree view of transformer health, empowering users with the latest technologies to monitor transformer conditions. Megger’s products cover multiple aspects of transformer testing and monitoring, including dissolved gas analysis (DGA), winding resistance measurement, and insulation resistance measurement. Its advanced diagnostic technologies help users identify potential transformer issues early, ensuring safe and stable operation.
8、Exertherm
Exertherm utilizes IR sensors to monitor critical connectors on both low-voltage and high-voltage sides of dry-type transformers. Its solutions provide permanent and predictive thermal monitoring for dry-type transformers, helping users prevent transformer failures caused by overheating and ensuring the safe operation of transformers.
9、GlobeCore
GlobeCore’s advanced transformer diagnostic equipment offers comprehensive solutions for accurately monitoring and assessing transformer conditions. Its products include transformer oil testing equipment, winding parameter testing equipment, and insulation condition monitoring equipment. These products provide users with detailed information on transformer conditions, assisting in timely maintenance and repair decisions to extend transformer lifespan and improve reliability.
10、Vaisala
Vaisala’s DGA monitoring system is its flagship product for power transformer monitoring. It has been proven in environments ranging from the Arctic to tropical and offshore regions. The system offers long-term stability, zero maintenance, no false alarms, and a revolutionary method for detecting ambient conditions, such as humidity and temperature. Vaisala’s transformer monitoring solutions help users monitor transformer conditions in real-time, ensuring transformer safety and reliability.
11、Franklin Grid Solutions
Its INCON® Distribution Transformer Monitor (DTM) provides continuous, meter-grade precision performance monitoring for high-value, mission-critical low-voltage pad-mounted and pole-mounted distribution transformers. It measures critical parameters such as transformer temperature, load, and voltage. By collecting and analyzing data from these parameters, it helps users monitor transformer operational status in real-time, predict potential faults, and optimize transformer operation and maintenance.
12、Weidmann Electrical Technology AG
Weidmann’s transformer monitoring products and SmartInsulation™ consist of unique embedded sensors and monitors. Its monitoring technologies help users better manage transformers by providing real-time data on insulation conditions and other critical parameters. Weidmann’s products are widely used in the electrical power industry and are known for their high quality and reliability.
13、Schneider Electric
Schneider Electric, a leader in energy management and automation, offers reliable transformer monitoring systems. In North America, its EcoStruxure™ Power Monitoring Expert solution enables real-time monitoring and analysis of power networks, including transformers. Its monitoring systems help users optimize transformer operation, reduce energy consumption, and enhance power supply reliability.
14、Siemens
Siemens is a global technology powerhouse focused on electrification, automation, and digitalization. Its PowerLink CM solution provides real-time data collection and analysis for power transformers, helping users optimize operations and reduce maintenance costs. Siemens’ transformer monitoring systems leverage advanced technologies such as IoT and big data to enable intelligent monitoring and management of transformers.
15、GE Grid Solutions
GE Grid Solutions is a leading provider of power system technologies and services for utilities, industries, and transportation. Its Multilin™ D400 is a cost-effective solution for real-time monitoring and diagnostics of transformers. GE Grid Solutions’ transformer monitoring systems combine hardware and software to offer users comprehensive transformer monitoring and analysis capabilities.
16、ABB
ABB is a global leader in power and automation technologies. With over 30 years of experience in the transformer monitoring system market, it offers a wide range of products, including sensors, software, and services. ABB’s transformer monitoring systems are widely used in power generation, transmission, and distribution fields. Its advanced monitoring technologies and solutions help users improve transformer reliability and operational efficiency.
17、TMU
TMU’s transformer monitoring system rapidly monitors the movement of each parameter. Its web-based interface allows users to watch transformers anytime and anywhere. If any monitored parameter exceeds limits, it automatically classifies the issue into a fault category, making it easier for technicians to determine the disturbance type and handle it quickly and accurately. TMU also provides in-depth data analysis to help users assess transformer performance, predict potential issues, and implement improvements.
18、EnrichAI
EnrichAI’s systems and services intelligently capture transformer parameters from operational sites, helping users consistently meet energy requirements for end consumers. Its intelligent transformer monitoring solutions utilize advanced technologies such as AI and IoT to enable real-time monitoring and analysis of transformers. EnrichAI’s products are user-friendly and provide users with detailed transformer condition information, aiding in decision-making.
19、H2scan
H2scan’s advanced hydrogen sensing technology is a key industry solution for cost-effective detection of potential transformer issues at startup. Its hydrogen transformer monitoring systems help users monitor transformer conditions in real-time, ensuring transformer safety and reliability. H2scan’s products are widely used in power generation, transmission, and distribution applications.
20、6Wresearch
6Wresearch identifies several leading companies in the North America Transformer Monitoring System Market, including ABB, Schneider Electric, Siemens, GE Grid Solutions, Hitachi ABB Power Grids, SEL, Qualitrol, Doble Engineering Company, Qualitrol-DMS, and Dynamic Ratings. These companies excel in technical expertise, product quality, and sustainability. They provide innovative technologies and customized solutions to advance the power generation and distribution sector while supporting the transition to cleaner and more efficient energy systems.
Doble Engineering Company
Doble Engineering Company is a leader in diagnostic testing and engineering services for the electric power industry. With over 100 years of experience, it has been a trusted provider of transformer monitoring solutions in North America. Its M4100 analyzer offers comprehensive diagnostics for transformers, helping users identify potential issues before they become critical. Doble’s products are widely used in power generation, transmission, and distribution applications, providing reliable transformer monitoring solutions.
21、Qualitrol-DMS
Qualitrol-DMS is a leading provider of substation monitoring and control systems for the electric power industry. In North America, it offers advanced transformer monitoring solutions, including real-time data collection and analysis. Its Asset Manager Software enables efficient and effective transformer asset management. Qualitrol-DMS’ products are widely used in power generation, transmission, and distribution fields, helping users optimize transformer operation and maintenance.
22、Dynamic Ratings
Dynamic Ratings is a global leader in transformer monitoring and control solutions for utility, industrial, and renewable energy applications. With over 35 years of experience, it has been providing innovative transformer monitoring solutions in North America. Its DGA monitors provide real-time data on transformer health, helping users make informed maintenance decisions. Dynamic Ratings’ products are widely used in power generation, transmission, and distribution applications, ensuring transformer safety and reliability.
Fiber optic temperature sensor, Intelligent monitoring system, Distributed fiber optic manufacturer in China
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