Advantages: • Over 100 years of operating experience • Many years of experience with special applications, e.g. Siemens high-voltage circuit breakers, regardless of type or voltage range, are designed in a well proven modular platform concept. This leads to a wide variety of circuit breaker types and strong flexibility with regard to various applications according to our customers’ requirements. The main components, such as the operating mechanism, control system, base frame, kinematic chain and insulator designs are identical and based on decades of manufacturing and operating experience. Our GIS switchgear range also includes the same interrupter units, operating mechanisms and control elements. By applying this proven modular design not only at our lead factory in Germany, but also within our global manufacturing network, we are able to fulfill the highest expectations regarding availability and reliability at eminently competitive prices.

Factory Acceptance Testing Guideline Process Industry IEC 61511. According to the standard IEC 61551 the factory acceptance test (FAT) is not a requirement but is. The lab is the source of innovation in a company. SIMATIC IT Unilab includes tools for brand-watching and R&D and stability studies. As a core module of SIMATIC IT R&D Suite Unilab helps bridge the gap between the lab and production. It closely interacts with formula manage- ment and ELN tools.

The drive concept of the 3AP circuit breaker family is based on the patented stored-energy spring principle. The mechanism types differ in terms of the number, size and arrangement of the opening and closing springs.

Both the opening and closing springs are located inside the operating mechanism, thereby achieving a simple and sturdy device. Proven design principles such as vibration-isolated latches and load-free isolation of the charging mechanism were retained. Advantages of the stored-energy spring mechanism: • Same principle for rated voltages from 72.5 kV up to 800 kV • High reliability thanks to low operating energy (10,000 operating cycles guaranteed) • Reliable, economical and durable due to uncomplicated and robust construction with few moving parts • Controllable switching state at all times • Easy access to springs as they are not integrated in SF 6 compartments • Maintenance-free for 25 years or 6,000 operation cycles. The electrohydraulic operating mechanism has been used in 3AT and 3AQ circuit breakers for more than 20 years. Even the highest switching voltages are safely brought under control in the shortest possible time, and it is also possible to master the most difficult switching tasks. Advantages of the electrohydraulic operating mechanism: • High operating energy for the highest switching performance in the shortest possible time • Contact positions are reliably maintained even if the auxiliary power supply fails • Multiple reclosure possible without the need for recharging • Constant self-monitoring • Checking of energy reserves at any time • Low-maintenance, economical and long service life • Meets stringent environmental protection requirements.

Memorandum o sotrudnichestve obrazec rk 1. Areas of application: • Bushings for transformers and other devices • Grading capacitors • Voltage and current transformers • Cable connections • Surge arresters • Circuit breakers Characteristics of composite insulators: • Low risk of breakage due to flexible sheds • Easy installation • Lightweight • Safety in the event of short circuits and earthquakes • No cleaning of silicone housing necessary • Resistant to environmental influences and pollution • Decades of operational experience with long-rod insulators, surge arresters and circuit breakers.