Thomas Electric

0.66kV alçak gerilim akım transformatörleri: kapsamlı uygulama rehberi, teknik özellikler, kurulum talimatları. Endüstri ve dağıtım sistemleri için detaylı kılavuz.
2026-02-26

Interrupteurs de charge 12-24kV: guide complet de spécifications techniques, applications réseaux de distribution, programmes de maintenance préventive. Documentation détaillée pour ingénieurs et techniciens.
2026-02-26

Transformadores de potencial 35kV: especificaciones técnicas completas, aplicaciones en subestaciones de transmisión y distribución, normas IEC 61869. Guía técnica detallada para ingenieros eléctricos.
2026-02-26

Messwandler für Energiezählung: technische Merkmale, IEC 61869 Normen, Anwendungsbereiche. Fachinformationen für Ingenieure.
2026-02-26

Yüksek gerilim devre kesiciler: IEC 62271 standartları, uygulama alanları, saha testleri. Kapsamlı teknik bilgi.
2026-02-26

Transformateurs combinés: applications réseaux de distribution, industrie, énergies renouvelables. Guide de maintenance préventive.
2026-02-26

Cajas de medición de alta tensión: especificaciones técnicas, aplicaciones en medición fiscal, normas IEC. Información para ingenieros eléctricos.
2026-02-26

Abstract To ensure the safe and economical operation of power systems, it is essential to monitor and measure the operating status of electrical equipment. For safety, measuring and protection devices are indirectly connected to the system via current transformers (CTs). This article analyzes common issues encountered with current transformers in power systems, identifies their causes,…
2026-01-25

When faults occur in current transformers (CTs) and voltage transformers (VTs), the following considerations must be taken into account to ensure safety and system stability: Voltage Transformer Fault Handling Considerations If a voltage transformer shows abnormal symptoms such as unusual noise, smoke, or oil leakage, it is critical to take proper precautions. In cases where…
2026-01-10

Fault Confirmation and Initial Diagnosis Use precision testing instruments (e.g., digital multimeter, clamp meter) to measure output current, error, and temperature rise to confirm the fault. Check for short circuits or open circuits, particularly in both high and low voltage sides. Test the voltage output against the rated values to identify potential issues such as…
2026-01-08

Introduction Voltage transformers play a vital role in power systems by transforming line voltages to levels suitable for measurement and protection. These transformers, like any electrical equipment, are susceptible to faults in both their primary and secondary circuits, voltage transformer faults can severely affect the entire system. Accurate fault diagnosis and effective solutions are essential…
2026-01-05

Abstract As the demand for electricity continues to grow with the development of the modern economy, ensuring accurate energy metering has become crucial for power enterprises to achieve economic benefits and maintain operational efficiency. The energy metering system comprises three key components: current transformers (CTs), energy meters, and secondary circuits. Among these, the CT is…
2025-12-19

In practical applications within power systems, voltage transformation, monitoring, and control are essential operations. Voltage transformers are commonly used to step down high voltages for safer handling and measurement. For safe and stable system operation, the secondary circuit of these transformers often requires grounding. But how many grounding points are allowed in a voltage transformer’s…
2025-12-18

Understanding the working characteristics of current transformers (CTs) is essential to ensure the accurate operation of protection systems, especially when external faults lead to high currents that may cause CT saturation. Saturation can affect the protection mechanism, potentially compromising the system’s safety and reliability. Several testing methods are available to assess whether a CT will…
2025-12-18