product brochure gas-insulated switchgear elk-14 c, · pdf file2 gis elk-14 c, 245 kv | abb...

Product brochure

Gas-insulated switchgear ELK-14 C, 245 kVHigh performance in a smaller footprint

2 GIS ELK-14 C, 245 kV | ABB

ABB is a leader in power and automation technologies that enable utility and indus-try customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 150,000 people.

ABB offers a wide range of high-voltage products up to 1200 kV that help enhance the reliability, efficiency and quality of power in transmission and distribution grids, power plants and industries while minimizing environmental impact. The wide prod-uct range is complemented by a comprehensive service offering.

ABB is the global leader in high-voltage GIS technology with more than 21,000 bays installed around the world. In 2009, ABB commissioned a GIS rated to handle more than one million volts (1200 kV), with a transmission capability of 6900 megawatts, reaching new heights in terms of global voltage levels. We pioneered high-voltage GIS in the mid-1960s and with the introduction of the compact 245 kV, we continue to drive technology and innovation. Our product portfolio comprises a full range of advanced GIS for voltages from 72.5 kV to 1200 kV.

ABB and 45 years of GIS innovation

ABB | GIS ELK-14 C, 245 kV 3

ABB and 45 years of GIS innovation 2

The ELK-14 C, 245 kV 4

Applications 4

Benefits 4

High performance ratings in a compact design 4

Low space requirements 4

Shortest transportation, installation and commissioning time 4

Low environmental impact 4

Highest product quality 4

Convenient operation and serviceability 4

Maximum flexibility 5

Reliable, well proven technology 5

Advanced features for smart substations 5

Technology 5

The ELK-14 gas-insulated switchgear from ABB 5

ABB’s high-voltage circuit-breaker 6

The circuit-breaker 6

The circuit-breaker operating mechanism 7

How it works 7

ABB’s disconnectors and earthing switches 8

The disconnector 8

The earthing switch 9

ABB’s voltage and current transformers 10

The voltage transformer 10

The current transformer 11


ABB’s terminals and connecting elements 12

The connecting elements 12

Surge arresters 12

The terminal connections 13

Transformer connections 13

Cable terminations 13

SF6-air bushings 13

ABB’s local control cubicle 14

The local control cubicle (LCC) 14


ABB’s commitment to total quality control 15

Enhancing eco-efficiency over the life cycle 16

The life cycle phases 16

Manufacturing phase 16

Use phase 16

End of life phase 16

Worldwide success 17

Technical data 18

Table of contents


ABB holds a distinguished record of innovations in gas-insulated switchgear (GIS) technology and our latest ELK-14 series for 245 kV is designed to break several performance barriers.

In a power system, switchgear is used to control, protect and isolate electrical equipment thereby enhancing the reliability of electrical supply. With GIS technology, key components including contacts and conductors are protected with insulating gas. Compactness, reliability and robustness make this a preferred solution where space is a constraint such as in mega cities or in harsh environmental conditions.

The compactness of this GIS, which has a dimension of 5000 mm (length) x 1600 mm (width) x 2600 mm (height including voltage transformer), makes it ideal for installations with constrained space and fast installation requirements where a traditional GIS with the 245 kV, 3150 A and 50 kA ratings does not fit.

The new design reduces product volume by up to 40 percent compared to its predecessor resulting in a considerably smaller footprint and reducing infrastructure such as land and building costs by 40 percent.

Due to the 245 kV’s compact and advanced design, it can be factory assembled and fully tested, and shipped as one bay with all secondary cabling and local con-trol cubicle in a container and on low bed trailers instead of many assembly units delivering a remarkable 60 percent reduction in installation and commissioning time compared to competing switchgears.

In addition to time and cost efficiencies, the ELK-14 C is also very environmentally friendly. Because of its smaller size, the amount of SF6 insulating gas required is about 20 percent less than competing switchgears.

The reduced amount of sealing, flange connections and support structures makes efficient use of resources by reducing thermal losses and infrastructure investments. The use of less packing material and streamlined transportation improves your carbon footprint.

The latest ELK-14 is fully assembled and tested in a manufacturing facility that uses an advance flow production system that adheres to ABB internal quality and manufacturing excellence procedures. All bays are produced and tested in excellent conditions under the strict supervision of ABB’s engineers and GIS experts.

Together with the integrated local control cubicle front panel, the drive cubicle for all drives for disconnector and earthing switches provides easy access for opera-tion of the equipment. The drives carry position indicators, hand crank access and padlocks at the operator corridor.

Gas density information can be supplied with combined density sensor/monitor and indicated on the front panel. All instrument transformers are wired to the control cubicle and have no additional interfaces in-between. A service platform above the bays gives convenient access to viewports and gas handling equipment.

The ELK-14 C, 245 kVPerformance that addresses today’s power challenges

Applications

BenefitsHigh performance ratings in a compact design

Low space requirements

Shortest transportation, installation and commis-sioning time

Low environmental impact

Highest product quality

Convenient operation and serviceability


Full sets of standardized connection elements allows for all possible configurations and building optimization, including integration into existing buildings, giving you ut-most flexibility in the shortest possible delivery time. We offer standardized solutions for the switchgear as well as for the control cubicle. With fewer parts to connect and specific flange protection against environmental elements, you are assured of a highly reliable SF6 insulation.

ABB believes that innovation is key to ABB’s competitive advantage and it has consistently invested in research and development to become a market leader. The ELK-14 is based on pioneering GIS technology since the 1960s and installation in over 100 countries. It complies with or exceeds the latest international standards (IEC/ANSI) and has been type tested in independent laboratories.

To ensure an interoperable and future-proof substation, the ELK-14 has been designed to incorporate the core values of the IEC 61850 standard. The standard defines strict rules for realizing interoperability between functions and devices used for protection, monitoring, control and automation in substations independent of the manufacturer which means investing in the latest 245 kV GIS is safe and the life cycle of your equipment is long-term.

The ELK-14 GIS from ABB is built on 50 years of pioneering research and develop-ment and experience delivering over 21,000 switchgear bays in over 100 countries. Our switchgears are crafted using standardized and modular components that en-able the construction of common layouts and bus schemes.

Maximum flexibility

Reliable, well proven tech-nology

Advanced features for smart substations

TechnologyThe ELK-14 gas-insulated switchgear from ABB

ELK-14 switchgear components

Circuit-breakers

Disconnectors and earthing switches

Voltage and current transformers

Connecting elements

Control & protection


ABB’s high-voltage circuit-breakerReliable, well proven technology

At the core of our switchgear system is the advanced double-motion auto puffer™ circuit-breaker with an optimized and compact layout that minimizes the volume of SF6 insulating gas required by 20 percent. The PEHLA-certified circuit-breaker is designed to provide optimal performance and low maintenance.

Each circuit-breaker comprises three single-phase breaker poles. Each pole con-sists of the spring operating mechanism, the interrupter column with one interrupt-ing chamber and the enclosure with the basic support structure. During overhauls, the interrupter unit can be removed easily from the enclosure and replaced by a new unit.

The circuit-breaker uses the double-motion auto puffer™ operating principle. At high currents, the pressure inside the puffer increases rapidly due to rising tempera-tures. This closes the puffer valve. The energy needed then to extinguish the arc is produced by the arc itself. At low currents, the puffer valve remains open and the circuit-breaker acts as a puffer breaker.

Double-motion auto puffer™ interrupters require far less operating energy than single-motion puffer interrupters. Arcing contacts on both sides of the breaker are coupled by a gear and move in opposite directions (double-motion), which minimiz-es mechanical reaction forces and further reduces the necessary drive energy.

The circuit-breaker

Circuit-breaker with operating mechanism

A B C A B C A B C


The circuit-breaker uses a spring operating mechanism for single- and three-pole operation. The mechanism combines the non-wearing properties of a hydraulic system with the robustness of mechanical spring operating mechanisms. We use spring operating mechanism in our entire GIS portfolio from 72.5 kV to 1200 kV, and we have supplied more than 100,000 spring operating mechanisms of this type.

Our spring operating mechanism is composed of a charging system, an energy storage with disk spring stack, an independent actuator piston and control valves, and auxiliary switches and position indicators. A hydraulic energy control system is integrated within a compact and sealed block that does not require any external piping. All components are easily accessible for maintenance and repair.

ChargingA pump moves oil from the low-pressure oil reservoir to the high-pressure side of the energy storage piston and compresses the disk spring stack. A micro switch stops the pump when the disk spring stack is fully-charged.

Close operationA magnetically-operated change-over valve initiates the close operation and con-nects the high-pressure side of the energy storage piston to the actuator piston. Both sides of the actuator piston are connected to the high-pressure reservoir. Due to the different areas of both surfaces of the actuator piston, the circuit-breaker closes and stays in a closed position.

Open operationThe trip coil operates the change-over valve and connects the actuator piston to the low-pressure reservoir. The circuit-breaker opens and stays in an open position due to the difference in pressure.

The circuit-breaker operat-ing mechanism

How it works

Three-pole operation: uncharged in open position Three-pole operation: charged in closed position Single-pole operation: A+B closed, C open


ABB’s disconnectors and earthing switchesConvenient operation and serviceability

Our disconnector and earthing switches are easy to operate and equipped with safety features that contribute significantly to operational safety.

Disconnectors provide a safe insulating gap to isolate sections with different poten-tial, for example busbar disconnectors, which isolate a feeder. The ELK-14 contains two variants – a busbar disconnector in busbar module and a linear disconnec-tor. The linear disconnector can optionally be equipped with a fast-acting earthing switch and enable the optimization of various layout configurations.

The operating mechanism is mounted in the central drive cabinet at the front of the bay. Hand-crank access, position indicator and mechanical padlocking facility (with electrical interlocking) are features conveniently located in the drive cabinet and are accessible from the operator’s corridor.

The disconnector

Disconnector

Disconnector in busbar module


Earthing switches connect isolated sections of the switchgear to the ground to protect personnel during maintenance and assembly work.

Feeder terminals are often equipped with fast-acting (or make-proof) earthing switches. These devices are able to ground induced currents on overhead lines, discharge larger capacitances such as cables, and provide safety when the op-posite end of a line is not properly de-energized. The fast-acting earthing switch includes a spring operated mechanism, which is either charged by a motor or by a hand crank.

Similar to disconnectors, the earthing switch operating mechanism is located in the central drive cabinet at the front of the bay. Hand-crank access, position indicator and mechanical padlocking facility (with electrical interlocking) are features conve-niently located in the local control cubicle of the drive and are accessible from the operator’s corridor.

The earthing switch

Disconnector with fast-acting earthing switch

Maintenance earthing switch


ABB’s voltage and current transformersHighly reliable metering, control, and protection functions

Our maintenance-free voltage and current transformers provide highly reliable me-tering, control, and protection functions.

Used for system protection, our powerful transformers offer years of trouble-free service.

The three-pole inductive voltage transformers are connected to the switchgear with a standardized connecting flange and a partition insulator. The primary winding is coiled on top of the core and the secondary windings. The latter are connected to the terminals in the external terminal box through a gas-tight multiple bushing.

The voltage transformer

Voltage transformer


Current transformer on maintenanceearthing switch

Non-conventional instrument transformer (NCIT)

The inductive current transformers are attached to the same housing where the maintenance earthing switch is located. The cores are located outside the gas com-partment eliminating the need for a gas-tight feed to the secondary terminals. Each current transformer may contain multiple cores for metering and protection within a single cast resin case. Current transformer parameters such as burden, ratio, accu-racy class and transient performance are set to meet specific project requirements. Multi-ratio transformers provide different ratios selectable by taps.

Non-conventional instrument transformers (NCIT) replace traditional voltage and current transformers. The NCIT uses two redundant Rogowski coils to measure the current value. The primary voltage is measured by a capacitive voltage divider composed of two cylindrical electrodes, the conductor and the enclosure. The measured values are digitally processed by the “secondary converters” and sent to the “merging unit”. From there the data is routed through a standardized, optical connection to the protection, measurement and control devices.

The current transformer



ABB’s terminals and connecting elementsMaximum flexibility

We have versatile terminal and connecting elements that enable the switchgear to be customized to fit your project requirements. We offer connecting elements in various shapes and sizes including elbow joints, T-elements and straight sections.

The ELK-14 GIS has a universal expansion joint to absorb heat expansion and vibrations during operation and civil engineering works. During site installation, the expansion element ensures that neighboring bays can be coupled easily andflexibly.

Surge arresters are fully-enclosed metal components that limit switching and light-ning over voltages. For stable and reliable operations, the ELK-14 GIS is equipped with gas-insulated metal-oxide surge arresters. Ratings and discharge classes are tailored to your project specific requirements.

The connecting elements

Surge arresters

Straight Expansion joint

Elbow joint T-elementSurge arrester


The terminal connections

Transformer connections

Cable terminations

SF6-air bushings

We offer a complete range of connecting elements for peripherals, such as SF6-air bushings, enclosures for cable terminations and direct transformer connections.

Our standardized transformer connections link power transformers directly to the switchgear via SF6 insulated bus ducts. Vibrations, thermal expansion of the trans-former and switchgear, as well as movements resulting from the settling of founda-tions, are compensated by bellows and expansion joints. A removable high-voltage conductor link isolates the transformer for testing.

Our manufacturer’s accessory supply includes cable connections for fluid-filled, dry-type or plug-in cable terminations. The interface for dry-type or fluid-filled ter-minations is designed based on IEC 62271-209. A removable link disconnects and isolates the GIS from the cable during high-voltage test for convenience and ease of operations.

Our lightweight SF6-air bushings are available in two variants – with classical por-celain insulators or in the standard version, with composite insulators and silicon sheds. Creepage distance, length, and shape depend on the project-specific environmental requirements. We provide SF6-air bushings that are maintenance-free with self-cleaning silicon sheds and protection against sandstorms.

Cable connection SF6-air bushingTransformer connection


ABB’s local control cubicleReduced commissioning and installation time

The local control cubicle (LCC) includes all required functions for the control and supervision of the GIS bay. The LCC is usually integrated and located on top of the operating mechanism cabinet. As an integral part of the ELK-14 GIS, the LCC is wired, factory-tested and shipped together with the bay as one transport unit. This reduces installation and commissioning time to a minimum and eliminates errors during site installation. Connections from the LCC’s prepared terminal blocks to dedicated protection cubicles, control systems, power supply, and inter-bay wiring are the only installation work done on site.

Our LCC typically contains control devices and feeder protection. Our advanced Relion® family of protection and control-IEDs and the advanced bay control mimic with two-handed operation for conventional control ensure the safe and economical operation of the switchgear.

Our broad range of control and protection systems include IEC 61850 compliant products that provide you with open, future-proof and flexible system architecture. Our advanced local control cubicles enables monitoring and remote diagnostic functions ensuring high availability and fast access to precise information from anywhere in the system, speeding up responses and reducing outage time. Cyber security is embedded as an integral part of the product to keep you worry-free. Investing in our switchgear is safe and increases the life cycle of your equipment.

Depending on your project requirements, we also deliver standalone LCC’s with all customary control and protection devices.

The local control cubicle (LCC)


Conventional LCC with bay control mimic

Modern LCC with Relion® control IED and circuit-breaker emergency control


ABB’s commitment to total quality controlHighest product quality

We are committed to giving you products of the highest quality that is why we strive to produce only products that comply with or exceed the latest international standards (IEC/ANSI). In addition, our products have been type tested in indepen-dent laboratories. Our certified design and manufacturing processes guarantee the highest quality of our products.

Our ELK-14 bays are fully assembled and tested in the factory with standardized, automated and reliable procedures. After routine testing, shipping units are packed in accordance with the freight carrier’s requirements, the duration of transportation, the dispatch route and site storage requirements. Its compact size allows functional bays to be shipped on flat racks.

Pre-tested, wired and SF6 pre-filled bays reduce the installation work significantly. Bays are coupled using standard tools and gas handling is minimized. Site testing according to IEC/ANSI standards and ABB quality assurance procedures include leakage checks on flanges, instrument transformer tests, control and monitoring functions, resistance measurements and a high-voltage test. Site installation can be carried out by ABB or by personnel from your own company under the guidance of a certified ABB supervisor. ABB offers training courses for every aspect of GIS installation, operation and maintenance.

ABB’s metal-enclosed gas-insulated switchgear requires minimal maintenance in service. Under normal operational conditions, more than 50 years fault-free opera-tion is assured with periodic visual checks. ABB Service provides competent 24/7 worldwide support in case of failures.

Our products are type tested according to different standards – IEC – ANSI/IEEE

Our products are certified by third-party organizations – GOST – LAPEM – PEHLA

Section of a 1½-breaker arrangement


Enhancing eco-efficiency over the life cycleLow environmental impact

For ABB, sustainability is about balancing economic success, environmental stew-ardship and social progress to benefit all our stakeholders.

Sustainability considerations cover how we design and manufacture products, what we offer customers, how we engage suppliers, how we assess risks and opportuni-ties, and how we behave in the communities where we operate and towards one another, while striving to ensure the health, safety and security of our employees, contractors and others affected by our activities. In line with our business practices, we publish environmental product declarations for each product we manufacture.

The life cycle of the ELK-14 product is composed of three phases: manufacture, use and disposal. The manufacture scenario includes materials used, transport of components and SF6-gas leakage rates. The usage scenario includes transport of products to customers as well as SF6-gas leakage rates and energy losses as-suming a 50-year life time. The disposal phase refers to SF6-gas handling and the energy for making recycled metals reusable.

– Continuous improvement in product design resulted in a more compact footprint that uses less aluminum and other metals

– Low thermal losses due to innovative designs and material choices – Full bay shipment due to compact design reduces the environmental impact of transportation dramatically

– ABB’s factory is ISO 14001 certified for environmental best practices and we also conduct regular environmental audits at our suppliers facilities

– Online monitoring for preventive maintenance – The low operating energies used by ABB’s modern interrupters combined with the efficient mechanical spring drives result in lower auxiliary power supply consump-tion

– Type tested for 0.1 percent SF6-gas leakage rate per year – Minimized SF6-gas leakage rates due to well proven sealing system

– Use of material which is easy to recycle or dispose – Improved maintenance processes that avoid the release of gases and oil – Improved recycling and disposal through clear declarations adjusted to different global standards

The life cycle phases

Manufacturing phase

Use phase

End of life phase


Worldwide successOver 900 bays in more than 120 substations in over 25 countries

Australia

2 substations

11 bays

Austria

1 substation

6 bays

China

5 substations

34 bays

France

1 substation

3 bays

India

7 substations

34 bays

Lebanon

1 substation

10 bays

Russia

23 substations

213 bays

Saudi Arabia

1 substation

3 bays

Thailand

5 substations

21 bays

US

3 substations

18 bays

United Arab Emirates

5 substations

29 bays

Algeria

3 substations

54 bays

Bahrain

3 substation

21 bays

Brazil

1 substation

6 bays

Canada

2 substations

11 bays

Egypt

4 substations

35 bays

Chile

5 substations

39 bays

Ireland

6 substations

74 bays

Italy

7 substations

43 bays

Morocco

1 substation

3 bays

Portugal

1 substation

7 bays

Spain

15 substations

93 bays

Switzerland

9 substations

52 bays

Syria

4 substations

66 bays

Libya

2 substations

19 bays

Singapore

1 substation

1 bay

Peru

2 substations

7 bays

Mexico

5 substations

24 bays

Sri Lanka

1 substation

9 bays

5000

2060

min

. 160

0

2600


Technical dataELK-14 C, 245 kV

ELK-14 double busbar bay

Circuit-breakers

Disconnectors and earthing switches

Voltage and current transformers

Connecting elements

Control & protection

Note: Dimensions in mm


ELK-14 C, 245 kV Product ID 1HC0071250M0020

Rated voltage kV up to 253

Power-frequency withstand voltage, 1 min. kV 460

Power-frequency withstand voltage, 1 min. across open contacts kV 530

Lightning impulse withstand voltage kV 1050

Lightning impulse withstand voltage across open contacts kV 1200

Rated frequency Hz 50/60

Rated continuous current A 3150

Rated short-time withstand current kA 50

Rated withstand impulse current kA 135

Circuit-breaker

First pole-to-clear factor 1.3/1.5

Rated breaking current, 50/60 Hz kA 50

Rated making current, peak value kA 135

Drive type spring

Rated opening time ms < 30

Rated breaking time ms < 50

Rated closing time ms < 100

Reclosing time ms < 300

Rated operating sequence O - 0.3s - CO - 1min - CO or CO - 15s - CO

High-speed auto-reclosing single- and three-phase

Mechanical endurance test class M2

Capacitive current switching test class C2

Disconnector and earthing switch

Capacitive current switching capability mA 250

Bus-transfer current switching capability A/V 1600/20

Opening/closing time s < 2.5

Classification of disconnector for mechanical endurance class M2

Mechanical endurance of earthing switch CO 3000

Fast-acting earthing switch

Switching performance making capacity: Current kA 135

Switching performance Inductive currents: Voltage kV 2

Switching performance Inductive currents: Current A 80

Switching performance capacitive currents: Voltage kV 12

Switching performance capacitive currents: Current A 3

Motor running time s < 6

Classification for electrical endurance class E1

Mechanical endurance CO 3000

Voltage transformer

Rated output (total) VA 100

Rated accuracy class % 0.2

Rated thermal power (total) VA 1000

Rated voltage factor 1.9/8 h

Number of secondary windings 1 or 2

Current transformer

Cores for metering

Cores for protection

SF6-air bushing

Continuous bending load N 2500

Test bending load N 5000

Creepage distance mm/kV 20, 25, 31

ABB Switzerland LtdHigh Voltage ProductsBrown Boveri Strasse 5CH-8050 Zurich / SwitzerlandPhone: +41 58 588 31 86Fax: +41 58 588 17 22

www.abb.com/highvoltage

Contact us

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Intellectual property informationThe term ‘status’ denotes the type of intellectual property concerned and distinguishes between patents, patent applications, utility models and designs, for example.

The following table represents ABB intellectual property relating to the ELK-14 C, 245 kV by 5 March 2013.

Applications:CN102570337; CN102163816; CN102568912; CN102263384; CN102420397; CN102315606; CN102629743; CN102684101; EP2390890; EP2390887; EP2405549; EP2466604; EP2466706; EP2485353; EP2501002; EP2551886; KR20130014435; US2007-0246444; US2011-0290624; US2012-0293919; US2012-0113568

Granted Patents:CN1661872; CN1661873; CN100472685; CN101128896; CN1042276; CN1046829; CN1046828; CN1076478; EP0676842 (IT, FR, DE, CH); EP0678952 (IT, FR, DE, CH); EP0730160 (IT, GB, FR, DE, CH); EP1351267 (FR, DE, AT); EP1569256 (FR, DE, CH, AT); EP1569311 (FR, DE, CH, AT); EP1675142 (IT, HU, GB, FR, ES, DE, CH, AT); EP1863052 (FR, DE, CH); JP3914278; JP4381711; JP4472552; JP4472553; JP5019461; KR101123223; KR101122198; KR101153915; KR101213615; US5625179; US5723814; US5753864; US5804972; US7122758; US7417847; US7626286

Designs:EU001804139-0001-0007; IN233847; IN233848; IN233849; IN233850; IN233851; IN233852; IN233853; RU80989; US29383122; ZL201130004699.6

ABB reserves the right to withdraw or modify the content of the above table at any time without prior notice.

This site including its content is provided ‘as is’ for your convenience only. Please note that ABB makes no representations or warranties of any kind whatsoever to the fullest extent permissible by law with regard to any content of this site, the accuracy of the data and fitness for a particular purpose.

Note: We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB Ltd does not accept any responsibility whatsoever for potential errors or possible lack of information in this document.

We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction, disclosure to third parties or utilization of its content – in whole or parts – is forbidden without prior written consent of ABB Ltd.

Copyright© 2014 ABB All rights reserved

product brochure gas-insulated switchgear elk-14 c, · pdf file2 gis elk-14 c, 245 kv | abb...

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