A power transformer is an electro-magnetic device that transfers apparent power between voltage levels in AC systems while maintaining frequency, enabling efficient transmission and distribution.

Transformers manage voltage levels, grid interties, and load matching, forming the backbone of transmission and distribution infrastructure.

Thermography detects hotspots; vibration sensors and acoustic measurements reveal loose laminations or magnetic hum. Oil and bushing inspections complement the assessment.

The ABB handbook provides technical background on transformer physics, design principles, standards, materials, insulation, cooling, losses, tap changers, dielectric testing and failure analysis. It may include sizing methods, typical specifications, guidelines for installation, protection, monitoring, maintenance and lifetime management. Handbooks are reference documents for utility and industrial engineers working with medium and high voltage transformer fleets.

In China, power transformers are produced by state-owned enterprises and private manufacturers in heavy electrical equipment sectors. Production clusters often sit in industrial regions that specialize in power apparatus, supplying domestic utilities, railways, and export markets. These sectors cover everything from small distribution transformers to ultra-high voltage autotransformers and HVDC converter transformers, reflecting the scale of China’s grid and infrastructure build-out.

Distribution transformers step down medium voltage feeders to low voltage suitable for residential, commercial and small industrial customers. They are placed close to loads to minimize losses on low voltage lines and to provide the correct service voltage. Without distribution transformers, it would not be practical to transmit energy efficiently at high voltage and then deliver it safely at the 120-400 V levels used by end users. Their standardized ratings and widespread deployment form the backbone of local distribution networks.

An On-Load Tap Changer adjusts the winding turns ratio while the transformer is energized, regulating secondary voltage under changing load or grid conditions. OLTCs maintain voltage stability without interrupting service in transmission and distribution systems.

Cavitation reactors can enhance oxidation and mixing in hydrocarbon treatment. Laboratory and industrial models are available for testing desulfurization processes.

GlobeCore supplies a full range of transformer oil testing instruments, including TOR-1 (Water Content Analyzer), TOR-80 / TOR-100 (Dielectric Strength Testers), Acidity Test Kits, and Tan Delta / Dissipation Factor Test Sets. For Furanic, DGA, and Interfacial Tension analysis, GlobeCore cooperates with certified partners who provide compatible laboratory systems. A comprehensive quotation for all requested instruments can be prepared upon request.

Yes, we can provide a quotation for the TOR-1 oil moisture meter including shipping to the U.S. The TOR-1 measures dissolved moisture in transformer oil in ppm with high accuracy. Lead time is typically 3-4 weeks.