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3EQ Silicone Surge ArrestersFor replacing your post insulators

The cost-saving solution for your substationYou require fewer post insulators for your installation, thereby saving you both money and space.

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 prior to 3EQ modification

Transformer

Support Support

GIS bushing

Surge ArresterVoltage

Transformer

Street

Diagram of substation with integrated 3EQ modification

saved installment space

Transformer

Support

GIS bushing

VoltageTransformer

Street

3EQ as support

Clearance between equipment according to technical standards

Type 3EQ silicone surge arresters in tube design by Siemens

Network with Um = 123 kW

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 Depends on the costs of land

Minimum savings of approximately

US$ 2,500 US$ 20,000

Transformer

3EQ as support

Voltage Transformer

Street

GIS bushing

Surge Arrester 3EQ3 before test After 80 kA short-circuit-test

Why is this only possible with the 3EQ surge arrester? The tube design ensures that these arresters are virtually in destructible. The 3EQ surge arrester is 100 % break-proof after a pressure relief operation. No parts will be thrown out and the emerging arc will burn between the directional pressure relief device. No other design, such as wrapped arresters, direct molded arresters with polymeric housing or porcelain housed arresters, can provide this.

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)

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.

Silicone rubber shields

FRP rods

MO

FRP tube

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

siemens.com/energy/arrester

Power Transmission Division Order No. E50001-G630-A106-V3-4A00 Printed in Germany Dispo 30002, SIMC-0000-44281 fb 6393 PD WS 08141.0

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.

siemens.com/energy/arrester