T&D World Magazine

Siemens Introduces 550KV Dead Tank and Controlled Switching Device

Siemens Power Transmission & Distribution, Inc. announced its entry into the extra high voltage (EHV) dead tank circuit breaker and controlled switching markets at the IEEE Power Engineering Society T&D show in Dallas, TX. Siemens introduced the SPS2 550 kV SF6 dead tank circuit breaker with a spring-spring operator and a controlled switching device.

The Siemens SPS2 550 kV dead tank is said to be the most compact design in the market with a long list of beneficial features, meeting or exceeding both ANSI and IEC requirements. It is the only unit in the market place with arc-assist interrupters utilizing a spring-spring mechanism for 2 cycle operation. The units are available with porcelain or composite bushings, customized control schemes and optional pre-insertion resistors.

Low installation cost and minimal maintenance make this unit ideal given the current trend toward maintenance free equipment. The compact design reduces shipping cost, decreases foundation requirements and minimizes SF6 gas requirements. The bushing assembly process is designed to minimize field labor and effort and the interrupter assemblies are designed to roll out for quick inspection if required.

"We see efficient, cost effective products and solutions as key factors to the success of our customers,” said Marcus Horn, vice president and general manager of Siemens Power Transmission & Distribution’s Transmission Products Division. “The introduction of the EHV unit with a spring-spring operator and a controlled switching solution underscores Siemens’ commitment to become the preferred supplier in the market.”

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