Oil-immersed transformers are widely used in substations for their cost-effectiveness, superior heat dissipation, and insulation properties. However, they carry a significant risk: the cooling oil is highly flammable. To mitigate fire and environmental hazards, a thick layer of gravel is strategical

Incident Review: A Heart-stopping InspectionDuring a routine inspection, personnel discovered a gruesome anomaly inside a low-voltage distribution cabinet—a dead mouse wedged between the three-phase busbars. Its body had bridged the gap between different phases, causing a severe phase-to-phase short

NASN POWER 24vdc to 12vdc modular converter is rack mounted in a 19'' shelf rack. The system is compact with 1U or 2U height for telecom communication network. Plug and play installation allows quick and easy installation and system expansion.The converter module is designed 1U height and capable of

The five shock energization test is a mandatory requirement under national standard GB 50150-2016and IEC 60076. Newly commissioned transformers must undergo five shock energization test tests, while units that have undergone major maintenance or winding replacement may be reduced to three shocks. Th

Basic Understanding of OBCThe On-Board Charger (OBC) is a core component in electric vehicles that converts external alternating current (AC) into direct current (DC) to charge the traction battery. Its power rating directly determines AC slow-charging efficiency. Currently, most domestic automakers

V2G (Vehicle-to-Grid) charging stations are redefining the role of new energy vehicles—they are no longer just electricity-consuming transport, but "mobile energy storage stations" capable of two-way interaction. In simple terms, V2G technology allows electric vehicles to store electricity by chargi

Most AC EV charger “ground fault” errors are misunderstood. An EV charger does not verify whether a PE (protective earth) wire is physically connected; it checks if the ground is electrically valid via N-PE voltage detection. In 99% of 7kW residential/commercial AC chargers, normal operation require

This technical breakdown explains the Over-Temperature Protection (OTP) logic in AC EV chargers, a critical safety feature compliant with GB/T 18487 and IEC 61851 standards. The system utilizes a high-frequency 2ms sampling cycle to monitor two key components with differentiated thresholds: Control

The 110Vdc 200A power supply battery rectifiers are designed to offer a highly reliable power supply and charging capacity for DC electrical substation.The model A380/110-200M10 is modular High Frequency technology with N+1 redundancy controlled by IGBTs with microprocessor control, capable of c