News
You may ask about tan delta test
The article focuses on a series of questions about tan delta test, such as what is a good tan delta value, etc.
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1211-2025
Wrindu Welcomes Indian Customers for Factory Visit
Wrindu Company recently welcomed Indian customers to our factory. We showcased our high-voltage power testing equipment and strengthened our partnership with international clients.
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2107-2025
wrindu revisits vietnamese customers
Mr. Qin, CEO of Ruidu Mechanical and electrical (Shanghai) Co., Ltd, visits Vietnam to deepen customer relationships and collect valuable feedback.
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0412-2024
Significant cooperation agreement reached with Saudi transformer manufacturer
During the visit, the general manager of our company had an in-depth exchange with the general manager of the customer company. The two sides had a heated discussion on the development trend of transformer manufacturing and testing technology, and agreed that high-quality testing equipment is the key to ensuring transformer performance and safety. "The customer's company" said that they are very satisfied with the quality and functions of our products, especially the advanced technology and high-precision measurement functions of these equipment, which fully meet their needs.
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1407-2025
substation test equipment bid winning
Ruidu Company's bid submitted in response to the Procurement of Design, Manufacture, Test, and Supply of Substation Testing Equipment for Lot_2 has been evaluated.
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0107-2023
Rui Du Mechanical and electrical (Shanghai) Wins Bid for Ethiopia DDAHD Project
Rui Du Mechanical and electrical (Shanghai) Co., Ltd. is honored to have won the bid for the POWERCHINA Hydropower Bureau International Company Ethiopia DDAHD Electrical Instrument Procurement Project!
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1811-2025
Differences Between Megger Test, Tan Delta Test, and Hi-Pot Test
Learn the differences between the Megger, Tan Delta, and Hi-Pot tests. Understand their purpose, voltage levels, and applications for assessing insulation quality.
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1311-2025
How Do Partial Discharge Testing Affect Electrical Systems?
Learn about partial discharge (PD) types and their impact on electrical systems. Early PD detection is key to preventing insulation failure and improving equipment reliability.
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0611-2025
Get to Know Transformer Vacuum Oil Purifier in Just Two Minutes
Learn about oil purifiers and their types, including vacuum, centrifugal, and de-coloring oil filter machines. Discover how they remove impurities, water, and gases from various oils like turbine, lubricating, and refrigeration oils.
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0511-2025
Wrindu New Product: High-Power Outdoor Power Supply
RDDY-3000 is a portable high-power outdoor power supply with a large lithium battery. It offers reliable 220V AC output, ideal for on-site testing and emergency backup.
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0511-2025
RDHL-200A Loop Resistance Tester VS Other Resistance Tester
Discover the RDHL-200A Ground Loop Resistance Tester with high precision, four-wire measurement, and advanced safety features. Ideal for testing switches, cables, and high-voltage systems.
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0411-2025
Do you know about these applications of the Primary Current Injector Tester?
Learn how the Primary Current Injector tests relays, transformers, breakers, cables, and equipment with precise current injections for performance and safety verification.
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2910-2025
Saudi Vision 2030 and New Energy Projects: A New Chapter in China-Saudi Cooperation
Saudi Arabia's Vision 2030 focuses on transforming its energy sector through renewable projects. Explore key partnerships, including Chinese investments in wind and solar, and the nation's shift toward a sustainable, diversified economy.
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3010-2023
Global Power Industry Achieves Breakthroughs in Green Energy and Digital Transformation
2023.10.30— The power industry is undergoing a revolutionary transformation to meet the growing demand for electricity while focusing on reducing its environmental impact. Innovative initiatives worldwide are driving the power sector towards a greener and more digital future.
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2910-2025
You must know about withstand hipot testing
Learn about Hipot testing, common testing devices (Series Resonant, AC/DC Withstand, and VLF), and their differences for high-voltage equipment testing.
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1510-2025
Gas vs liquid chromatography: Key Differences, Advantages and Choosing
Learn the key differences between Gas Chromatography (GC) and Liquid Chromatography (HPLC). Explore their advantages, disadvantages, and how to choose the best method for your analysis.
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1009-2025
The common problems and solutions in series resonance testing
Concise guide to series resonance testing: common faults, causes, and practical fixes for resonance points, main unit resets, Q-value issues, and power trips.
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0909-2025
Dielectric Strength and Oil Chromatography: Key Insights and Applications
Explore the importance of dielectric strength and oil chromatography in electrical systems. Learn their applications, testing methods, and benefits for system reliability and performance.
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2008-2025
From Principle to Early Warning: Detection and Prediction of Generator Rotor Winding Short Circuit
Explore generator rotor and stator principles, and learn how rotor winding short-circuit issues are detected and predicted for reliable operation.
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1408-2025
What exactly is a lightning arrester used for?
Learn the role and purpose of lightning arresters, how they differ from surge protectors, their working principles, and tips for choosing lightning test equipment.
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0311-2025
Wrindu Wraps Up Successful Participation at the 2025 Middle East Power & Electrical Equipment Expo in Riyadh
Wrindu successfully showcased advanced testing instruments at the 2025 Middle East Power & Electrical Equipment Expo in Riyadh. All products sold out, highlighting global trust in Wrindu's quality and innovation.
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2210-2025
Wrindu Products-2025 Middle East Power and Electrical Equipment Expo
Join Wrindu at the 2025 Middle East Power and Electrical Equipment Expo in Riyadh. Explore innovative products like the RDHG-E Tester, Transformer Tan Delta Tester, and more.
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1709-2025
Wrindu at 2025 Middle East Power Expo in Saudi Arabia – Visit Booth A197
Join Wrindu at the 2025 Middle East Power Expo in Riyadh! Visit Booth A197 to explore our innovative electrical solutions. Don't miss out on this industry event!





