Download Retrofit for Siemens GIS Type 8D1 / 8D2

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.