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3EQ Silicone Surge Arresters
For replacing your post insulators
Answers for energy.
The cost-saving solution for your substation
You require fewer post insulators for your installation, thereby saving you both
money and space.
Diagram of substation prior to 3EQ modification
Transformer
Voltage
Transformer
Surge Arrester
Support
GIS
bushing
Support
Street
Reduce the required space even more
It‘s no problem to install our 3EQ surge
arrester over the transformer! There is no
danger to equipment, even in the direct
vicinity.
Diagram of substation with integrated 3EQ modification
Transformer
3EQ as support
GIS bushing
Voltage
Transformer
Support
Street
saved installment space
Why is this only possible with the 3EQ surge arrester?
The tube design ensures that these arresters are virtually
in­destructible. The 3EQ surge arrester is 100 % breakproof ­after a pressure relief operation. No parts will be
thrown out and the emerging arc will burn between the
directional p
­ ressure relief device. No other design, such as
wrapped arresters, direct molded arresters with polymeric
housing or porcelain housed arresters, can provide this.
Surge Arrester 3EQ3 before test
After 80 kA short-circuit-test
Do you require high bending moments for the support?
The 3EQ surge arrester in tube design can support!
6,000 Nm/MDCL 37,000 inch-lbf
(for voltages of 30 kV to 362 kV)
38,000 Nm/MDCL 235,000 inch-lbf
(for voltages of 110 kV to 800 kV)
72,000 Nm/MDCL 445,000 inch-lbf
(for voltages of 220 kV to 800 kV)
225,000 Nm/MDCL 1,390,000 inch-lbf
(for voltages of 550 kV to 1200 kV)
Silicone rubber shields
FRP rods
MO
FRP tube
Type 3EQ silicone surge arresters in
tube design by Siemens: FRP tube
for ­ultimate mechanical stability.
The silicone rubber is molded directly
onto the FRP tube.
Type 3EQ silicone surge arresters
in tube design by Siemens
3EQ
as support
Voltage
Transformer
Street
Network
with
Um = 420 kV
Materials
such as
Foundation,
steel structure,
post insulators,
clamps, rental
fees for cranes
US$ 1,000
US$ 8,000
Working hours
Installation for
steel structure
and post insu­
lators
US$ 1,500
US$ 12,000
Building site
Surface area
GIS
bushing
Transformer
Network
with
Um = 123 kW
Minimum
savings of
approximately
Clearance between equipment according to technical standards
Depends on the
costs of land
US$ 2,500
US$ 20,000
Published by and copyright © 2014:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany
Siemens AG
Energy Sector
Power Transmission Division
High Voltage Products
Nonnendammallee 104
13629 Berlin, Germany
Please contact us at:
Phone: +49 30 386 33 222
Fax:
+49 30 386 26 721
E-mail:arrester.energy@siemens.com
US contact
Siemens Energy, Inc.
Power Transmission Division
444 Highway 49 South
Richland, MS 39218
Please contact us at:
Toll-free:+1 (877) 742-3309
Phone: +1 (601) 932-9800
E-mail:arrester.energy@siemens.com
Printed on elementary chlorine-free
bleached paper.
siemens.com/energy/arrester
All rights reserved.
Trademarks mentioned in this document
are the property of Siemens AG, its affiliates,
or their respective owners.
Power Transmission Division
Order No. E50001-G630-A106-V3-4A00
Printed in Germany
Dispo 30002, SIMC-0000-44281
fb 6393 PD WS 08141.0
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.
siemens.com/energy/arrester