TG/TVI Series Gas-insulated instrument transformers

Overhaul Items for Transformer Conservator:1. Ordinary-Type Conservator Remove the end covers on both sides of the conservator, clean rust and oil deposits from inner and outer surfaces, then apply insulating varnish to the inner wall and paint to the outer wall; Clean components such as the dirt collector, oil level gauge, and oil plug; Check that the connecting pipe between the explosion-proof device and the conservator is unobstructed; Replace all sealing gaskets to ensure good sealing with n

Based on years of field statistics on switchgear accidents, combined with analysis focusing on the circuit breaker itself, the main causes have been identified as: failure of operation mechanism; insulation faults; poor breaking and closing performance; and poor conductivity.1.Failure of Operation MechanismFailure of operation mechanism manifests as delayed operation or unintended operation. Since the most basic and important function of a high-voltage circuit breaker is to operate correctly and

1. Induced Lightning OvervoltageInduced lightning overvoltage refers to the transient overvoltage generated on overhead distribution lines due to nearby lightning discharges, even when the line is not directly struck. When a lightning flash occurs in the vicinity, it induces a large amount of charge on the conductors—opposite in polarity to the charge in the thundercloud.Statistical data shows that lightning-related faults caused by induced overvoltages account for approximately 90% of total fau

Error Tolerance of Total Harmonic Distortion (THD): A Comprehensive Analysis Based on Application Scenarios, Equipment Accuracy, and Industry StandardsThe acceptable error range for Total Harmonic Distortion (THD) must be evaluated based on specific application contexts, measurement equipment accuracy, and applicable industry standards. Below is a detailed analysis of key performance indicators in power systems, industrial equipment, and general measurement applications.1. Harmonic Error Standar

The solid-state transformer (SST), also known as a power electronic transformer (PET), uses voltage level as a key indicator of its technological maturity and application scenarios. Currently, SSTs have reached voltage levels of 10 kV and 35 kV on the medium-voltage distribution side, while on the high-voltage transmission side, they remain in the stage of laboratory research and prototype validation. The table below clearly illustrates the current status of voltage levels across different appli

Air-insulated ring main units (RMUs) are defined in contrast to compact gas-insulated RMUs. Early air-insulated RMUs used vacuum or puffer-type load switches from VEI, as well as gas-generating load switches. Later, with the widespread adoption of the SM6 series, it became the mainstream solution for air-insulated RMUs. Similar to other air-insulated RMUs, the key difference lies in replacing the load switch with an SF6-encapsulated type—where the three-position switch for load and grounding is

Ⅰ. Project Background & Pain Point AnalysisThe Mexican office building utilizes a 15HP commercial central air conditioning system originally powered by a single-phase 220V grid. Due to the lack of 380V three-phase driving voltage, the compressor startup current exceeds overload limits (measured at 3.2× rated current), causing refrigeration efficiency to plummet to 40%, accompanied by:Motor winding temperature rise exceeding standards (ΔT > 65°C), reducing insulation lifesp

Ⅰ. Project ChallengesA lithium battery production line in Quebec required conversion of 575V three-phase power from the Canadian industrial grid to 220V single-phase power. The existing distribution transformer system faced:Harmonic interface: Voltage distortion affected precision control systems, reducing yield rates by 18%Energy efficiency loss: Conventional distribution transformers exhibited 0.8 power factor with notable reactive lossesEnvironmental adaptability: Humidity fluctuations in ind

Wenzhou Rockwell Transformer Co., Ltd. distributes power transformers to multiple African countries including Tanzania, Zambia, Rwanda, Ethiopia, Togo, Cameroon, and Malawi. With in-depth knowledge of local policies, we propose a collaborative plan to establish a manufacturing facility for oil-immersed distribution transformers and seek partnerships with qualified African entities.Ⅰ.Localized Production Strategy1. Market-Adaptive Capacity AllocationAlign production capacity with regional market