Wrindu

Wrindu – Manufacturer of Electrical Testing and Measurement Equipment

Overview of Wrindu

Wrindu is a manufacturer specializing in electrical testing and measurement equipment for the power sector, industrial applications, and laboratories. The brand operates under Rui Du Mechanical and Electrical (Shanghai) Co., Ltd, established in 2014 in China. Since its foundation, Wrindu has focused on developing solutions for low-voltage to high-voltage electrical testing, supporting installation, operation, maintenance, and electrical safety assessment.

Wrindu products are widely used in substations, industrial plants, electrical maintenance units, and technical laboratories, meeting testing requirements for both on-site applications and controlled environments.

Wrindu Product Categories by Function

• Electrical Measurement and Power Analysis Equipment: This category includes instruments designed to measure voltage, current, frequency, power, and power quality. These devices support fault detection, phase imbalance analysis, and monitoring of electrical system conditions.

• Insulation and Grounding Test Equipment: This group covers equipment for measuring insulation resistance, earth resistance, and grounding system performance. These instruments help ensure electrical safety, reduce leakage risks, and protect both personnel and electrical assets.

• High Voltage Test Equipment: This category consists of equipment used to test voltage withstand capability, insulation performance, and electrical durability of cables, electrical equipment, and components. It is commonly applied during pre-commissioning and acceptance testing.

• Power Equipment Testing Instruments: These devices are used to test key electrical equipment such as circuit breakers, protective relays, motors, and switching devices. Their primary function is to evaluate operational performance, stability, and reliability.

• Cable and Transmission Line Test Equipment: Equipment in this category supports cable condition assessment, fault location, and transmission quality evaluation, helping reduce downtime and improve maintenance efficiency.

• Transformer and Insulating Oil Test Equipment: This group focuses on transformer parameter testing, insulating oil condition analysis, and maintenance support, contributing to extended service life of medium- and high-voltage power systems.

• Battery, Energy Storage, and Power Source Test Equipment: These instruments are designed to test capacity, internal resistance, and discharge performance of batteries, energy storage systems, and backup power sources, ensuring reliability in continuous power applications.

• Laboratory and Electrical Testing Support Equipment: This category includes instruments for capacitance measurement, dielectric loss testing, and other advanced electrical tests, supporting research, inspection, and technical training.

Wrindu Product Development Direction

Wrindu develops its product portfolio with a focus on integration, specialization, and practical application, addressing electrical testing requirements from basic measurements to advanced diagnostics. The equipment is designed for both field use and laboratory environments, helping engineers and technicians improve work efficiency while ensuring electrical system safety.