High-Voltage Compact Switchgear
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High-Voltage Compact Switchgear 3AP1 DTC for 145 kV and 245 kV

How the hybrid concept fulfills our customers’ requirements Meeting customer demands with high voltage switching technology has become a story of success for Siemens. Our decades of experience are the basis for the design and production of our high-voltage circuit breakers and disconnectors, and we have used our knowledge to satisfy our customers in the best way we know possible. Our goal is to offer premium products at competitive prices, and we have fulfilled our mission with a wide range of high voltage products. The core components are adopted from our high voltage circuit breakers,...

The hybrid concept enhances safety by combining SF6 gas-insulated and air-insulated components. According to CIGRE analyses, gas-insulated components are four times more reliable than air-insulated components. By increasing the safety of our product through the separation of gas compartments (e.g. between the circuit breaker and disconnector), we increase availability of switchgear in the market. Deliveries of more than 1,000 DTC circuit breakers to over 30 countries provide our customers with safety and competitive advantages worldwide, which equates to greater success for their own...

Possible components for the 3AP1 DTC compact switchgear 3. Circuit breaker with self-compression principle 4. Three-position disconnector / earthing switch 6. Cable connection assembly 7. High speed earthing switch The hybrid concept enhances flexibility exactly in accordance with your individual substation configurations: • Circuit breaker with one or three-pole operating mechanism • Disconnector, earthing switch, high-speed earthing switch • Current transformer, voltage transformer and voltage detection system • Cable connections possible at various positions • Bushings available as...

The hybrid concept enhances the space efficiency of your substation H-layout of a conventional 145 kV AIS using 5 Dead Tanks Reduction of space of approx. 40 % compared to a DTC solution with 5 DTC switching modules Current transformer Current transformers for DTC are conventional types. The existing CT housing enables the placement of ring type cores in many combinations with different ratings. Cores for measuring and protection are available. The current transformer can be located at various positions, e.g. between the circuit breaker and the disconnector/ earthing switch. This is...

1 Trip coil CLOSE 2 Cam plate 3 Corner gear 4 Connecting rod 5 Connecting rod for closing spring 6 Connecting rod for opening spring 7 Closing spring 8 Emergency hand crank 9 Charging gear 10 Charging shaft 11 Roller lever 12 Damper (for closing) 13 Operating shaft 14 Damper (for opening) 15 Trip coil OPEN 16 Drive mechanism housing 17 Opening spring Stored-energy spring drive mechanism The operating mechanism is a central part of high-voltage circuit breakers. The drive concept of the 3AP circuit breaker family is based on the patented stored-energy spring principle and is identical on all...

disconnector/ earthing switch Drive variants of disconnector/earthing switch Disconnection and earthing of the Dead Tank Compact circuit breaker is achieved by combining the functions of the disconnector/earthing switches, additional earthing switches, and high-speed earthing switches. When the respective part of the system is turned off and isolated, the isolation distance requirements for safe working conditions on electrical systems and earthing are met. Additional rupture discs and filter attachments increase the safety and lifetime during operation. Optional inspection windows allow...

high-voltage test secondary technology test temperature rise test Type Testing Routine Testing All our circuit breakers are completely type-tested in accordance with latest international standards before their market launch. In our Berlin factory, we have one of the most modern testing laboratories available which are accredited to EN 45001 and part of the European network of the independent testing organization, PEHLA. All required facilities are available: The main components of the Compact Switchgear are subject to complete preacceptance pressure testing before assembly. Based on this...

Rated short-circuit breaking current [kA] Rated power-frequency withstand voltage/min kV Rated lightning impulse withstand voltage/min kV Number of interrupter units per pole Maintenance after All values in accordance with IEC; other values on request

Competitive and safe with DTC accessories Voltage Detection System (VDS) The Voltage Detection System (VDS) is yet another intelligent device of the DTC component portfolio. Advantages: • Economic alternative to a voltage transformer if there is no requirement for voltage values to be measured • High reliability due to use of an optical interface • Guaranteed high level of safety created by an integrated surge arrester which protects electronic components and staff • Opportunity for simple integration of switching error protection, such as closing the earthing • Switch under live conditions...

Opened disconnector contact SIVIS Stationary and Mobile Camera Systems SIVIS camera systems for the 3AP1 DTC make it possible to quickly and easily check the disconnecting earthing switch module positions. The systems are a complementary solution for preexisting position indicators on earthing disconnector operating mechanisms. With these camera systems, we have made it easy for your maintenance and service personnel to monitor the disconnector, earthing switch, and highspeed rating positions during maintenance Closed earthing switch contact which further improves the safety standards of...

Published by and copyright © 2013: Siemens AG Energy Sector Freyeslebenstrasse 1 91058 Erlangen, Germany Siemens AG Energy Sector Power Transmission Division High-voltage products Nonnendammallee 104 13629 Berlin, Germany For more information, please contact our Customer Support Center. Phone: +49 180/ 524 70 00 Fax: +49 180/ 524 24 71 (Charges depending on provider) E-Mail: support.energy@siemens.com or: circuit-breaker@siemens.com Power Transmission Division Order no. E50001-G630-A231-X-4A00 Printed in Germany Dispo 30002 Printed on paper bleached without the use of elemental chlorine....