Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

I. Key Elements of Mechanical Structure DesignThe mechanical structure design of AIS voltage transformers ensures long - term stable operation. For 66 kV outdoor AIS voltage transformers (pillar - type structure): Pillar Material: Use epoxy resin casting + metal frame for mechanical strength, pollution/weather resistance. Special design needed for 66 kV (vs 35 kV & below). Dry - type insulation (porcelain/epoxy shell) requires sufficient bending/impact resistance for harsh outdoors. Heat Dis

Impact on Insulation Performance Changes in Insulating Material Properties: AIS voltage transformers rely on air as the insulating medium, and they also contain some solid insulating materials, such as insulating paper and insulating bushings. When the temperature rises, the migration and evaporation of moisture in solid insulating materials like insulating paper will accelerate, resulting in a decrease in the electrical strength of the insulating materials and an increased risk of insulation br

In 10 kV and 35 kV ungrounded systems, single - phase grounding faults cause minimal current, so protection rarely trips. Per regulations, operation is limited to 2 hours; prolonged undetected faults may worsen, even damaging switches. While the State Grid promotes small - current grounding line selection devices in 110 kV and 220 kV substations, their accuracy remains low, requiring monitoring/operation staff to analyze remote measurements. For ungrounded systems with three - phase 4PT voltage

Hey everyone! I'm James, a professional with over 10 years of experience installing voltage transformers. Today, I want to talk about the selection and installation of Air Insulated Switchgear (AIS) voltage transformers in 66kV outdoor substations.These devices are critical for measurement and protection in power systems. Their proper selection and installation directly affect the safety and stability of the entire electrical grid. With the advancement of smart grid technology, electronic AIS vo

Hey everyone! I’m Echo, and today we’re diving into the application and development of Air Insulated Switchgear (AIS) voltage transformers in 66kV outdoor substations. These devices play a crucial role in power systems, not just for measurement but also for protection and control. As technology advances, they continue to evolve to meet higher performance demands and stricter environmental standards. Let’s take a closer look!Applications Voltage Measurement One of

Hey everyone! I’m Oliver, an experienced electrician with over a decade in the power system industry. Today, we’re diving into a practical topic — what tests are required to ensure an Air Insulated Switchgear (AIS) voltage transformer is qualified? These tests are crucial not only for ensuring the device operates correctly but also for maintaining the safety and stability of the power grid. Let’s get started!1. Visual InspectionFirst Look MattersThe very f