iec medium voltage switchgear type xgear
TRANSCRIPT
IEC Medium Voltage Switchgear Type xGearTM
Assembled locally by Eaton approved partners to International Standards, meeting local requirements
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Presentation Contents
• Definition • Applications • Eaton’s Core Technologies • xGearTM MV Switchgear
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Definition
• Medium Voltage Switchgear • Air Insulated • Single Busbar • Ratings
• 12kV up to 31/5kA-3s, 3150A • 17.5kV up to 31/5kA-3s, 3150A
• IEC 62271-200 Third Party Certified
What is xGearTM ?
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Typical xGearTM Applications Medium Voltage Switchgear
and Controlgear Primary/Secondary Switchgear
& Motor Control In
Minerals Utility Networks
Process Industries Commercial Construction Pharmaceutical Industries
Water & Waste Water Treatment Infrastructure Construction Projects
Core Technologies
Vacuum Interrupters Vacuum Circuit Breakers Epoxy Resin (Solid) Insulation Integrated System Manufacturer
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Core Technologies – Fully Integrated Manufacturer
Eaton is one of the few global fully integrated manufacturers of Medium Voltage equipment • Vacuum Interrupter
• Encapsulated Pole Unit
• Circuit Breakers
• Switchgear
• Protection & Control
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Core technologies – Vacuum Switching
• Vacuum technology • Safe • Reliable • Compact Design • Maintenance Free • > 30,000 Operations • Typical Switching Duty of 100 x Isc • Environmentally Friendly • Fully Recycled at End of Life
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Core Technologies – Cast Resin Encapsulation
• Durability • Protection from climatic conditions,
mechanical impact, moisture, humidly and dust
• High Performance • High thermal conductivity • High electrical resistivity • Low moisture absorption • High creepage current resistance • High mechanical strength
• Compact
Eaton’s Newest Range of MV Switchgear
xGearTM 12 – 12kV rated xGearTM 17– 17.5kV rated
Design Features
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Basic Construction
VCB Compartment
LV Compartment
Cabling Compartment
• Clear Control Functionality • Ample Protection Relay Space • Status Indication
• Clear Control Functionality • Visibility Window • Door Interlocked with circuit breaker/contactor
• Visibility Window • Ample cabling capacity • Door Interlock option with Earth Switch
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Basic Design Defined per IEC62271-200
• Loss of Service Continuity • LSC2B
• Partition Class • PM
• Internal Arc Classification • AFLR • (Operator, Front, Lateral, Rear)
• Ingress Protection • External IP4X • Internal IP2X
• Accessibility of Compartments • Cable:
• Interlocked Controlled / Procedure
• Circuit Breaker: • Interlocked Controlled
• Busbars: • Non-Accessible / Tool Based
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Detailed Design 1
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Arc Chamber
Cable Terminations
Current Transformers
Busbar Compartment
Low-voltage Wire-way
Low-voltage Compartment
Circuit Breaker Compartment
Automatic Shutters
Earth Switch
Voltage Transformers
Earth Bar
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Arc Chamber
• Internal Arc Classification – AFLR • Power Xpert® UX has IAC ratings of
• 12kV & 17.5kV ratings: • 25kA-1s; 31.5kA-1s;
• Exhaust gasses are directed away from personnel by an integral Arc Chamber with optional extension pieces, wall flanges and grille to exhaust outside the switch-room
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Basic Design – Low-Voltage Compartment
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5 Earth Switch
Mimic Diagram
Voltage Detection System (VDS)
Breaker Position
Breaker Status
Protection Relay Indicators
Instruments
Low-voltage Compartment
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3 Low-voltage wire-way
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Busbar Compartment
• Totally enclosed in earthed metal compartment which vents into the integral arc chamber.
• Fully insulated over entire length • Epoxy mouldings segregate
individual switchgear sections • 12kV and 17.5kV
• Up to 3150A natural cooing. • 3 second Short Circuit ratings
of: 25kA, 26.3kA, 31.5kA,
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Vacuum Power Switching Compartment
The Heart of the System: 1. Vacuum Circuit Breakers.
The W-VACi
2. Vacuum Contactors. The SL 400
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Vacuum Power Switching Compartment 5
Viewing Window 9
10 Manual Circuit Breaker Operation
11 Circuit Breaker Racking Mechanism
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Vacuum Power Switching Compartment
Safety Interlocks • Compartment door is interlocked with the
circuit breaker / contactor truck such that: • The unit cannot be racked in until the door
is closed…and • The door can not be opened when the unit
is in the Service position
• Breaker Secondary contact block interlocked such that: • It can only be removed when the unit is in
the Test position….and • The unit cannot operate unless it is plugged
in.
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Vacuum Circuit Breaker Type W-VACi: 12kV, 17.5kV, 24kV
• Industry leading vacuum and cast-resin insulation technology
• Conformance to latest IEC • Designed and tested to latest
IEC62271-100 standard
• Environmentally friendly design • Vacuum technology • ROHS compliance
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Vacuum Contactor Truck Type SL400
• Rated Voltage: 7.2kV • 200A Continuous Motor FLA • Easy fuse replacement • Fuse blown indication
• Withdrawable carriage consistent with W-VACi • Same interlocks • Same position indicators • Same racking mechanism
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Automatic Shutters
• Individually operated • Earthed Metal • Can be padlocked in closed
position • Colour coding & Text option • Shutter lifter option available
for testing purposes
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Circuit Earth Switch
• Operated from front of switchgear • ‘Closed/Open’ status visible from
front cable chamber window. • Status indication available on the
low-voltage compartment mimic • Mechanical interlock option with
the cable compartment door
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Circuit Earth Switch
• Safety Interlocks • Mechanical interlock with the circuit
breaker compartment such that: • Earth Switch cannot be ‘Closed’ with the
circuit breaker / contactor in the ‘Service’ position.
• Circuit breaker / contactor can only be moved from ‘Test – Disconnected’ to ‘Service’ position when Earth Switch is ‘Open’.
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Current Transformers
• Cast-resin, block-type CTs are offered as standard
• Up to 4 CTs per phase may be possible depending on rating
• Option for wire-wound CTs is available
• Ratings > 2500A are Cast-resin, ring-type
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Voltage Transformers
• Cable Side Cast Resin Voltage Transformers available in 3 options: • Fixed • Removable • Fully withdrawable behind
closed door with safety shutters
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Cable Terminations
• Cable Access/Entry Options: • Rear Access, Bottom Entry • Front Access, Bottom Entry • Rear Access, Top Entry
• Safety Interlocks: • Door cannot be opened until the
Earth Switch is CLOSED • Earth Switch cannot be OPENED
unless the door is closed.
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• Fault tested earth bar system
• Effective and easy connection to the station earth
• Runs vertically and horizontally in each section and connected to Earth Switches when provided
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New image
Earth Bar
Panel Configurations Truck Configurations
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Configurations
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xGearTM 12 – 17.5kV
kV 12 & 17.5 Busbar rated current A 1250, 2000, 3150 Short time current kA-3s 25, 26.3, 31.5, IAC kA-s 25-1, 31.5kA-1 Panel width mm 600, 800, 1000 Panel height mm 2200 / 2760* Circuit-Breakers: Rated current max A 630, 1250, 2000, 3150 Short time current kA-3s 25, 31.5
Technical data
* Height over the arc chamber
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Dimensions
Panel width 600 mm 800mm 1000mm 12 kV and 17.5 kV Max. rating 630 A / 1250 A 2000A 3150 A Depth 1320 1320 1500 Height (A) 2200 2200 2200 Height including Arc Chamber 2760 2760 2760
xGearTM providing value in all MV applications
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Main & Distribution Sub-stations
• Safe • Reliable • High Interruption Ratings • Automation / Smart Grid Ready • Low Environmental Impact helps
Utility gain ‘Green’ Credentials
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Infrastructure & Commercial Buildings
• Safe • Reliable • Compact • Global platform • Low Life Time Costs • Low Environmental Impact
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Heavy Industries & WW Treatment
• Safe • Reliable • Compact • Global platform • Low Life Time Costs • High Electrical Ratings • Low Environmental Impact
xGearTM Feature List
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xGearTM Safety features • Partition class-PM • Active mimic diagram • Integrated arc chamber • Voltage detection system • Accessibility of compartments • Loss of service continuity: LSC-2B; • Independently operated padlockable shutters • Vacuum & epoxy encapsulation technologies • Internal arc classification of AFLR to 31.5kA-1s • Viewing windows – breaker and cable compartment • Comprehensive list of mechanical & electrical interlocks • 3rd party tested and certified to latest IEC 62271-100 & 200
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xGearTM Reliability features
• Totally enclosed and insulated busbars • Minimum service checks compared to SF6 • Vacuum and epoxy encapsulation technologies • Fewer moving parts in pole units than SF6Accessibility of
compartments • 3rd party tested and certified to latest IEC 62271-100 & 200 • 20,000 operations (tests ongoing for some ratings to 30,000
operations) • Diffuse discharge technology on VI contacts nearly eliminates
contact wear
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xGearTM Other valued features Rugged Robust Design • Integrated arc chamber • Cable entry top or bottom • Up to 6 cables per phase • Cable access front or rear • ISC-2B; partition class = PM • Fault tested earth bar system • Robust, maintenance free design • Ingress of foreign objects IP4X Compact • 1320 and 1500 mm depths • 600, 800, and 1000 mm widths
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xGearTM Other valued features
Low lifetime costs • Compact • No SF6 pressure checks • Back to wall configuration • Front or rear cable access • Low end of life disposal costs • Robust, maintenance free design • Secondary cable wire-way runs total length of panels • Vacuum interrupter contact designs prevent hot spots • Top or bottom cable entry w/ up to 6 cables per phase
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xGearTM Other valued features Low environmental impact • SF6 Free • Low energy loss during operation • Use only re-usable and recyclable materials • No special requirements for end of life disposal
High ratings • 17.5kV up to 4000A • Up to 30,000 operations • 25-3, 26.3-3, 31.5-3 short circuit withstand ratings
xGearTM A truly global product assembled locally through Eaton approved partners, meeting local requirements and international standards.
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