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Download Retrofit for Siemens GIS Type 8D1 / 8D2
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Retrofit for Siemens GIS Type 8D1 / 8D2 General approach Continuous innovative improvements in the area of HV GIS technology have consequently led to a modern Retrofit concept – to replace of the old double pressure – respectively blast piston circuit breaker with a new, modern and low maintenance required self-compression 8DN8-circuit breaker with spring operating mechanism. Especially the SF6 – double pressure circuit breaker used at the beginning of the introduction to the market require very high maintenance. On the other hand, remaining GIS-components like disconnector, earthing switch, busbar, etc. need very low care and have a long service life. The Siemens retrofit solution with a modern SF6-self blast circuit breaker with spring operating mechanism especially addresses this situation. Retrofit circuit breaker 8DN8 The selected circuit breaker applied for this retrofit solution is used in the current GISdevices 8DN8 GIS and HIS and also in outdoor high voltage circuit breakers. Adapter - retrofit circuit breaker 8DN8 – existing substation The essential adapter needed 2 times for the connection of the new circuit breaker to the existing switchgear, is type tested with 650 kV rated lightning impulse withstand voltage. The adapters together with the retrofit circuit breaker 8DN8 represented one SF6-gas compartment, which is controlled by the circuit breaker SF6 gas density monitor. Switchgear Services Retrofit of 8D1/ 8 D2 by an 8DN8- circuit breaker using two adapters equipped with gas-tight bushings Technical data: Rated impulse withstand voltage: Weight of one adapter: SF6-filling pressure at 20°C: Amount of SF6-gas/adapter: 650 kV approx. 200 kg 0.61 MPa 28 kg Your benefits at a glance Significant lower maintenance costs Type tested in accordance with the applicable IEC standards Low maintenance spring operating mechanism Reduced amount of SF6 gas No hydraulic oil Decreased number and lengths of gaskets Reduction of life-cycle costs Further availability of expert knowledge During Retrofit the switchgear remains in operation Published by and copyright © 2009: Siemens AG Energy Sector Freyeslebenstrasse 1 91058 Erlangen, Germany Siemens AG Energy Sector Power Distribution Division Transmission and Distribution Services Humboldstrasse 59 90459 Nuremberg, Germany www.siemens.com/energy/services 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: [email protected] Power Distribution Division Order No. AS_FF_en_8D12Retrofit_1106 Printed in Germany Printed on elementary chlorine-free bleached paper. All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.