NEX 24

24 kV switchgear May 2010

Agenda

Applications NEX offer Range description Remote control Continuity of service

Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 2

Applications

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A solution for MV primary substations

●NEX 24 is present on all electrical distribution markets: ● energy ● infrastructure: hospitals, airports ● industry: cement plants, water Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 4

Simplicity

●NEX 24 for standard applications Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 5

Flexibility

● NEX 24 closer to you ● Proximity: ●well-proven technical support ●quick response to request for quotes and tenders ●optimal solution with advanced characteristics ●dedicated engineering ● A complete range: ●Circuit breaker ●voltage transformers / current transformers ●earthing switch ● … Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 6

NEX 24 offer

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Characteristics

●Definition: ● draw-out metal-enclosed switchgear functional units ● indoor installation ● air insulated cubicle (AIS) ●Electrical data: ● rated insulation voltage: 24 kV ● lightning surge withstand: 125 kV peak ● nominal current: 630 A to 2000 A ● main circuit short-time withstand current: up to 25 kA 3s ● earthing switch short-time withstand current: up to 25 kA 3s ● internal arc withstand: up to 25 kA 1s ALFR Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 8

Characteristics

●Vacuum breaking technology ●24 kV voltage level ●Two cubicle widths for the range Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 800mm 1000mm 9

Performances

kA 50 40 31,5 25 16 24 kV NEX 24

630 1250

2000

2500

A

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Installation parameters

A B C D

NEX 24

600 1 810 4000 600

Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010  Protection index o IP3X - IP4X 11

Installation and connection type

Bottom cable connection Top bar connection Top cable connection Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 12

NEX 24 complies with IEC 62271-200 standard

●Safety of use for all against electrical, mechanical and thermal effects of a fault: ●each compartment is insulated from the others by metallic earthed walls ● 3 compartments : ●cable connection ●circuit-breaker ●busbar ● Low Voltage cabinet Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 13

Standards conformity

●NEX 24 range complies with international IEC 62271-200 standard governing metal-enclosed switchgear for AC current for rated voltages above 1kV and up to and including 52 kV ●Standards: ● IEC 60694 IEC62271-1 : Common clauses for HV switchgear ● IEC 62271-200 (60298): AC metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52 kV ● IEC 62271-100 (60056): HV AC circuit-breakers ● IEC 60470: HV AC contactors ● IEC 60265-1: HV switches ● IEC 60282-2: HV fuses ● IEC 62271-102 (60129): AC disconnector and earthing switch ● IEC 60255: Measurement relay and protection device ● IEC 60044-1: Current transformers ● IEC 60044-2: Voltage transformers ● IEC 60044-8: Electronic current transformers ● IEC 60529 : Degrees of protection provided by enclosures ● IEC 61958: Voltage Presence Indication Systems Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 14

Standards conformity

●Normal operating conditions: ● Indoor equipment ● temperature -5 to +40°C ● altitude ● humidity   1000 m 95 % over 24 h  90 % over 1 month ●Specific conditions: ● Possibility to adapt equipment according to environmental requirements Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 15

An efficient and safe interface

●All operations are carried out with the door closed ●Access to live parts is impossible due to protective flaps ●Voltage presence indicator ●Position indicator linked to device physical position ●Instructions in symbol form: ● without text ● Standardized symbols ●Locking systems: ● by padlock ● by key-lock ● electromagnetic Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 16

NEX 24 internal arc withstand performances

Modèle Performance NEX 24 25kA 1s (AFLR) Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 17

Protection of operators and continuity of supply

●Architecture based on safe access to compartments: ● protection of operators in the event of internal arcing ● complies with 5 criteria: ●les correctly secure doors and covers do not open ●no fragmentation of the enclosure occurs within the time specified for the test ●arcing does not cause holes in the accessible sides up to a height of 2m ●indicators do not ignite due to the effect of the hot gases ●the enclosure remains connected to its earthing point ●Satisfies continuity of supply requirements: ● maintenance with power on (LSC2B) ●secured access to compartments with power on thanks to separate busbar and cable compartments ● the MV parts are compartmentalised by earthed metallic partitions and shutters Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 18

Ease of maintenance

●Preventive and reduced maintenance ● Sepam protection unit: ●sum of currents broken ●event memorisation ●control circuit monitoring ●self-monitoring ●Simplicity of maintenance ● Periodic simple operation checking ● Cleaning and lubrication every 5 to10 years Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 19

Range description

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A complete range

●A cubicle for each function Feeder Incomer Coupling Busbar earthing Load-break Feeder IF cubicle IF cubicle BC and RF(RW) cubicles BM cubicle Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 LB cubicle IF cubicle 21

Remote control

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A built-in protection and monitoring chain

●Sepam multi-function protection relay range: ● series 20 Sepam for standard applications: – Current or voltage measurement ● series 40 Sepam for advanced applications – All measurements: current and voltage, power, energy ● series 80 Sepam for specific and customized applications – All measurements: current and voltage, power, energy ●Sepam, a solution adapted to your operations: ● Real time data comprising circuit-breaker status ● Quick isolation of a failed network component and network configuration from the remote control centre Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 27

Instrument transformers

●To supply protection, metering and monitoring devices ●A full preferential current transformer range, harmonized with digital protection devices, to simplify determination of accuracy characteristics: TLP 160 / 190 current transformer ARJP, ARJH, ARJM ARJA type current transformer VRS3 voltage transformer Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 28

Voltage prescence indicator: an effective and safe interface

●The VPIS (Voltage Presence Indicator System) is located on the front panel of the functional unit and in the immediate proximity of the earthing switch operating mechanism Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 29

Permanent monitoring

NEX 24 Transparent Ready option: ● Access to predefined Web pages containing information on: ●Current, power, energy, history, … ● Uses a simple Web server and the local TCP / IP network Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 30

Continuity of supply

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Draw-out devices – circuit breaker

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Vacuum breaking draw-out devices

●Evolis circuit breaker ● Evolis circuit breaker for cubicles IF and BC 24 kV / 2000 A ● RI operating mechanism Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 33

The earthing and disconnector trucks

Earthing truck ● is a safety feature which allow the cubicles busbar to be earthed Disconnector truck ● enables the upper and lower part of the cubicle to be short-circuited.

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A guaranteed high level of availability

●The result of experience of more than 2000 items of switchgear installed world-wide ●Incorporation of innovating solutions designed from tried and tested equipment: ● High performances breaking devices ● Digital control, monitoring and protection chains ● Enclosures able to withstand internal arcing Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 35

References the world over in all sectors of activity

●Infrastructures ● Hotel Méridien Bangalore (India) ● New Airport of Bangkok (Thailande) ● Sous-Station du port de Lattakia (Syria) ●Energy ● North Delhi Power Ltd (India) ● Otway, Port campbell offshore extraction de gaz (Australie) ● Raffinerie de pétrole Empresa (Colombie) ● Technip Qatargas (Qatar) ●Industry ● Usine Hyflux de désalination d’eau (Singapour) ● Station de Pompage d’eau Bir Hal Hacham (Syrie) ● Mines d’or du nord de Mara (Tanzanie) Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 36

Eco-design and eco-produce

●Eliminate sensitive substances ●Facilitate treatment of products at end of life ●Continuously enhance the environmental performance of production sites 97% of Schneider Electric industrial sites are ISO 14001 93% of global products are eco-designed 37 Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010

Conclusion

●NEX 24 ● Provides optimum continuity of supply ● Proximity, flexibility ● Facilitates and simplifies maintenance Schneider Electric - MV LoB- G. Allison / M. Maitre – May 2010 38