aegis ring main unit - secondary switchgear | lucy · pdf filepage 3 contents introduction to...

Aegis ring main unit

providing intelligent solutions

To find out more about us, visit:

www.lucyswitchgear.com

• Costeffective

• Safe

• Maintenancefree

• Simpleoperation

• Easytoinstall

• Climateindependent

• Automationready

WhyAegis?

Contents

Introduction to Lucy Switchgear 4

Product panorama: Lucy medium voltage and high voltage range 5

Introduction to Aegis 6

Installation and operating conditions 7

Safety features 8

Application examples 9

Aegis range presentation 10

Available configuration 12

Standards 12

Product characteristics 13

General 13

Product presentation

User interface and interlocking mechanism

L: LBS Load Break Switch 14

Standard features

Optional features, factory fitted

Optional features also available as retrofit

Circuit Breaker; T or V modules 15

Standard features

Optional features, factory fitted

Optional features also available as retrofit

Circuit breaker protection 16

TLF

Protection relays

ProtectionCT(Currenttransformers)forTLFandrelays

Options and accessories 19

Secondary injection

Actuators(motorised)

Cablecompartment

Shunt trip coils

EarthFaultIndicators(EFI)

Air metering unit 20

Switchgear automation 21

Cable bushings and cable terminations 22

Technical data sheet 23

Dimensions 24

Order form 26

Lucy Switchgear is a global leader in switching, protection and automation solutions for electrical distribution systems, with over 100 years’ industry experience. Today the company is a specialist in secondary power distribution, engineering high-performance medium voltage switchgear for utility, industrial and commercial applications, overhead line equipment and providing retrofit and automation solutions to customers internationally. Engineeringexcellence,basedonalongtraditionofexpertise,coupled with state of the art technology to meet customers’ stringent specifications, make Lucy Switchgear one of the few companies that can offer truly bespoke solutions. We have the capability to manufacture units for any location, climate or situation

and offers a complete product portfolio, with a wide scope of services and dedicated after sales support throughout the product lifecycle.

AspecialistUKresearchanddevelopmentfacility,withacontinuousprogramme of R&D, ensures that Lucy Switchgear’s products are always at the cutting edge, designed to anticipate the evolving technicalandmarketdemandsofourcustomers.Andourmulti-millionpound,purposebuilt,stateoftheartUKmanufacturing facility provides complete control over production.

Lucy Switchgear is a truly international company with offices in China,Dubai,MalaysiaandSouthAfrica;manufacturingfacilitiesintheUnitedArabEmirates,SaudiArabiaandIndia;andanestablishedglobal network of industrial partners and contractors operating in over 50 countries worldwide.

Aegis

1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015

Scimitar

Trident

Ring main unit range evolution

Sabre

IntroductiontoLucySwitchgear

Product panorama: Lucy medium voltage and high voltage range

Switch disconnectors

Ratedvoltage(up to)

Mode offault current interruption

Insulationmedium

Ratedcurrent(up to)

Mounting Installationcondition Operation

24kV Vacuum SF6 630AGround /

TransformerIndoor /Outdoor

Local /RemoteAegis

24kV Vacuum SF6 630AGround /


Local /RemoteSabre

36kV - Air 800A Pole OutdoorLocal /RemoteRapier AX

38V - SF6 630A Pole OutdoorLocal /RemoteRapier GX

15.5kV Fuse Oil 630AGround /


Local /RemoteTrident

17.5kV Fuse SF6 630AGround /


Local /RemoteScimitar

145kV - Air 2500A Structure OutdoorLocal /RemoteRapier DSB

Ring main units

Aegis is a new generation of Ring Main Units mainly designed for secondary distribution networks up to 24kV. This range is available in indoor and outdoor formats to suit various application needs. All the live parts and switching functions are insulated with SF6 gas and sealed in a stainless steel tank ensuring a high level of reliability, personnel safety and virtually maintenance free operation.

The structural tank welding is performed by a robotic welding processensuringhighreliabilitywithaproductlifeexpectancyofmore than 30 years. The housing is fully treated using zinc coated steel and electro statically applied, oven cured paint to resist degradation from pollution and harsh climatic conditions. ThetransformerprotectionisbyVacuumCircuitBreaker.Onrequest, the units can be supplied with integrated automation for remote monitoring and control functions.

Characteristics:

• 12kV,17.5kVand24kVratings

• Extensibleandnonextensiblerangewithupto

4switchingfunctionsinasingletank

• Hermeticallysealedstainlesssteeltankinsensitive

to environment

• Intuitivesinglelinemimicdiagramforsimpleand

safe operation

• VacuumCircuitBreakerenclosedinanSF6insulatedtank

forextraprotectionagainstcorrosionandpollution

• Provisionformotoractuatorsforremoteoperation and control

• Integratedcabletestingfacilityonfrontface eliminating the need for cable disconnection

• Suitableforindoorandoutdoorapplications

• Variousprotectionoptions(TLF,relays)tosuit customer needs

• Lowroofheightdesignedforkiosksand

mini substations

• EasyintegrationwithSCADAnetworkforremote operation and control

• StandardRAL7032paintfinishwithothercolours available on request

IntroductiontoAegis

IP54 Outdoor metal clad non extensible units only

Temperature De-rating Curves

700

650

600

550

500

450

40 45 50

Ambient Temperature ° C

Rat

ed C

urr

ent

(Am

ps)

55 60 65

400

350

300

630A at 40°C

i. Indoorandoutdoortypeunits

ii. Ambienttemperatureforoperationwithoutderating:40°C(forhighertemperatureapplicationspleaserefertotemperaturederatingcurvebelow)

iii. Averagevalueover24hoursmax:40°C

iv. Maximumaltitudeforoperationwithoutderating: 1000m(abovesealevel)*

v. Insulationmedium:SF6Gas

vi. Ratedpressureat+20°C:0.03MPa

vii. Interruptionmedium:vacuum

* Forhigheraltitudeapplicationspleasecontactlocal Lucy Switchgear sales office.

IP41 Indoor extensible and non extensible

Installationandoperatingconditions

Operation mechanism The mechanism consists of one operating shaft and one selector. The operatingshaftisusedforswitchingON/OFF(MainsorEarth)andtheselectorisusedforselectionoftheMainsorEarthpositions.ItisimpossibletosimultaneouslyclosetheLoadBreakSwitchorCircuitBreakerandtheEarthswitch.

The mechanism incorporates mechanical interlocks and padlocking facilities to improve operator safety.

Anti reflex mechanism:Ensuresatimedelaybetweenswitchingoperationstoallowsufficient time for the main breaker to trip and clear a fault.

Internal Arc withstandAegisSF6Gasinsulatedstainlesssteeltanksarefullyinternalarcrated and this feature is also available on the cable compartment (optional)toensuremaximumoperatorsafetyintheeventofinternalfaults.Asstandard,allthetanksareratedforAF(operatorsafetyfromthefrontoftheunit)andthereisanoptiontorequestforAFL(frontandside)andAFLR(front,sideandbackoftheunit).

FormoredetailsonIACratings,pleaserefertothetechnicaldatasheet on page 20.

Safety features

Earth and test facilityThe cable earth and test facility is an optional feature on the Load BreakSwitchandtheCircuitBreaker.Itislocatedatthefrontoftheunitforeaseofaccess.Itisusedfortestingcableinsulationand to locate faults in the circuit without the need to remove the main cables from the cable compartment, which improves the operator safety.

The cable test access cover is fully interlocked and cannot be opened untiltheLoadBreakSwitchorCircuitBreakerSwitchisinEarthONposition. The test bushings are earthed with a star bar which has to be removed for cable tests.

Cable compartmentThe cable compartments are located at the front of the units with horizontalmountedDIN400typeCbushingsforeaseofcableconnection.VacuumCircuitBreakerfunctionhasfactorymountedprotectionCT(currenttransformers)onthecablebushingsforeaseofinstallationandtoavoidanypotentialdamagetoCTduringtransit and connections.

For enhanced operator safety, the cable compartments are earthed and fully interlocked allowing access to the operator only if the functionisinEarthONposition.

There is an option of supplying these cable compartments with InternalArcratingasperIECstandards.

Pfisterer sockets Neon indicator with push-to-test buttons

Earth bar in cable compartmentAfullyratedcopperearthbarismountedinsidethecablecompartment. This earth bar is used to connect the screened cable connectorsthroughM12sizebolts.Thebarrunsthroughthewidth of the unit and protrudes 125mm to the rear of the cable compartment or connection to the main earthing system. For additional safety it is not possible to remove it while unit is live.

VPISVPIS(VoltagePresenceIndicationSystem)isanoptionalfeatureintheAegisrange.Itisusedforcheckingthepresenceofvoltagesinthecables.TheVPISgetsavoltagesignalthroughthevoltagedividerbuilt into the cable bushings. They can also be fitted with neon lights and momentary latching push buttons to show voltage presence withoutneedingexternaltestingprobes.

Two types of voltage presence indication device are offered:

• Pfisterersockets

• Neonindicatorswithpush-to-testbuttonsandphasecomparator sockets

The key areas of application are:

Energyi. Generation:windpower,solarpowerii. Distribution: compact substations

Infrastructure:tunnels,airports,ports,underground railway stations

Commercialbuildings:hospitals, shopping centres, hotels, office buildings, data centres

Industries:waterandwastewater,mining, minerals, automotive, iron and steel, paper and pulp, cement and petroleum

Applicationexamples

Functions available:SW: Switching functions: L:LBS - 12kV:630A - 17.5kV:400A - 24kV:400A

CB: Circuit breaker functions: V:VCB - 12kV:630A T:VCB - 12kV:250A - 17.5kV:250A - 24kV:250A

Metering functions: M1:Busbarmetering - 17.5kV:630A

TheAegisrangeisavailableinfourconfigurations,rangingfrom1functionto4functions,asshownbelow.

Aegisrangepresentation

1-function 2-functions 3-functions

4-functions

Non extensible: (12kV, 17.5kV and 24kV)Thisrangehas3and4functionsinsulatedbySF6gasinasinglehermetically sealed stainless steel tank. This solution is available in indoor(IP41)andoutdoor(IP54)versionsandisperfectlysuitablefor integration into compact substations to form standard ring main secondary networks with transformer protection.

Extensible: (12kV only)Theextensiblerangeisusedtoaddanotherfunctionontheleft,right or both sides of switchgear installed in secondary networks. Thisrangehas1,2,3and4functionsinsulatedbySF6gasinasinglehermeticallysealedstainlesssteeltank.Itisanidealsolutionifadditional functions are needed in the present or foreseeable future. Availableinindoor(IP41),theseunitscanbeeasilyextendedinanycombination on site without specific tooling or floor preparation, and without the need to transfer SF6 gas.

Theunitsareextendedasshowninthesediagrams:

Extension bushings

Busbar extension system

International StandardsIEC62271-1IEC62271-100IEC62271-102IEC62271-103IEC62271-200

Alloftheextensibleunitsareavailableinthefollowingextensibilityfunctions:

• Lefthand

• Righthand

• Bothsides

Availableconfiguration

Standards

Positions of the functions in the unit

Types of functions

1st 2nd 3rd 4th

L L L L

T T T T

V V V V

3 functions unit

4functionsunit

Positions of the functions in the unit

Types of functions

1st 2nd 3rd 4th

L L L L

T T T T

V V V V

1 function unit

2 functions unit

3 functions unit

4functionsunit

Non extensible (compact range) Extensible range

Product presentation

Load Break Switch

1 EFI

2 Pressure indicator

3 MarshallingBox

4 OptionalVPIS

5 EarthandTestFacility

6 Protection Relay

7 'PushToTrip'Button

8 CircuitBreakerIndication

9 InterlockedCableBoxCover

10 DisconnectorIndication

11 CableTestandCableBoxInterlock

12 DisconnectorOperationCollar

13 OperationCollar

14 SwitchIndication

15 OperatingHandle

Circuit Breaker

User interface and interlocking mechanism

Safety interlockingEachLBSandVCBmodulehassafetyinterlockedaccessviaarotaryknobonthefasciatoenableaccesstothecableconnectioncompartmentandalsothecabletestaccesspanel(ifspecifiedasanoption)locatedonthefascia.

Operating handle access shafts have the facility for individual padlocks.

Position

LoadBreakSwitch

ON

OFF

OFF

EarthON

Cablecompartment

interlock

Locked

Locked

Locked

Unlocked

Selector

Main

Main

Earth

Earth

Earth&Testinterlock(iffitted)

Locked

Locked

Locked

Unlocked

Interlock status Position

CircuitBreaker

ON

OFF(Tripped)

OFF(Reset)

EarthON

EarthON

OFF(Tripped)

Cablecompartment

interlock

Locked

Locked

Locked

Unlocked

Locked

Locked

Selector

Main

Main

Earth

Earth

Earth

Earth

Earth&Testinterlock(iffitted)

Locked

Locked

Locked

Unlocked

Locked

Locked

Interlock status

1 23

4

5 6

7

8

9

10

11

121314

15

Product characteristicsGeneral

Standard features• Threepositions(ON,OFF&Earth),springloadedmechanism,

independent manual operation

• Singlemechanismwithtwoindependentoperatingshafts,oneforswitchON/OFFpositionandanotherforselectinginMainsandEarthoperation

• Interlockedselector,lockedfromoperationwhen switch is in ON position

• Singlelineintuitivemimicdiagramwithclearindicationtoshowthestatusofswitch(ON,OFForEarthpositions)

• GaspressureindicatorwithRedandGreensectorstoindicateminimumpermissiblepressureforsafeoperation(onlyonepertank)

• HorizontalcableterminationsinfrontwithDIN400 typeCbushings

• Fullyinterlockedcablecompartmentallowingentry onlyiffunctionisinEarthONposition

• Padlockfacility(8.5mmdiameterhole)forallthe

operating positions

Optional features, factory fitted• Internalarcratingofcablecompartmentfor

additional safety

• Remotelowgaspressurealarm,1N/O(onlyonepertank)

• VPIS–VoltagePresenceIndicationSystem

• Remoteswitchpositionindicator

(1N/O,1N/Cand2N/O,2NC)

• Fullyinterlockedcableearthandtest(E&T)facility without removing main cable connections

• ShortcircuitandEarthFaultCurrentIndicators(EFI)

• Wiringformotorisation

Optional features also available as retrofit• MotoroperationforLoadBreakSwitch(onlyifunitisprewired

formotorisation)

• Widerangeofcableclamps,andglandstoaccommodate1and3corecables(refertocablecompartmentsectiononpage17forfurtherinformation)

Product characteristicsSwitching functions L: LBS load break switch

Product characteristics Circuit breaker: T or V modules

T module 250A and 400A rated vacuum circuit breakers for transformer protection.

V module: 630A rated vacuum circuit breaker for transformer / downstream network protection.

Standard features• Threefunctions(ON,OFF&Earth),twopositionspringloaded

mechanism, independent manual operation

• Singlemechanismwithtwoindependentoperatingshafts,onefor circuit breaker ON/OFF position and another for selecting disconnectorinMainsorEarth(isolation)

• Interlockeddisconnectorselector,lockedfrom operation when circuit breaker is in ON position

• Mechanicalpush-to-tripbuttonforlocaloperation

• TripcoilforreceivingtrippingsignalfromrelayorTLFdevices

• ProtectionfunctionTLForrelay(customerspecific)

• Singlelineintuitivemimicdiagramwithclearindicationtoshowthestatusofswitch(ON,OFForEarthpositions)

• GaspressureindicatorwithRedandGreensectorstoindicateminimumpermissiblepressureforsafeoperation(onlyonepertank)

• HorizontalcableterminationsatfrontofunitwithDIN400Ctype bushings

• ProtectionCT(currenttransformers)mountedon cablebushings(customerspecific)

• Fullyinterlockedcablecompartmentallowingentry onlyiffunctionisinEarthONposition

• Padlockfacility(8.5mmdiameterhole)forallthe

operating positions

Optional features, factory fitted• Internalarcratingofcablecompartmentforadditionalsafety

• Remotelowgaspressurealarm,1N/O(onlyonepertank)

• VPIS–VoltagePresenceIndicationSystem

• Remotecircuitbreakerpositionindicator (1N/O,1N/Cand2N/O,2NC)

• Fullyinterlockedcabletestfacilitywithouttheneedtoremovemaincableconnections(refertocabletestfacilityforfurtherinformation)

• Self-poweredrelayforprotection(customerspecific)

• TLF(TimeLimitFuses)foralternativeprotection

• WiderangeofCurrenttransformersforTLFandRelayprotection

• Shunttripcoilsforexternaltripping

• Wiringformotorisation

Optional features also available as retrofit• MotoroperationforCB(onlyifunitisprewired

formotorisation)

• Widerangeofcableclamps,andglandstoaccommodate1and3corecables(refertocablecompartmentsectiononpage17forfurtherinformation)

Two types of protection devices are offered to protect the circuit breaker;

TLF : Time limit fuses

Protection relays

TLF When utilised in conjunction with circuit breaker type ring main units,timelimitfuses(TLF)areacosteffectivemethodofprovidingfaultprotectionforovercurrentandearthfaults(optional)toatransformerof2000kVAorless.ItisarecognisedmethodofprotectionandwasdevelopedtocomplywithEA41-26(nowsupersededbyENATS41-36)withfuselinksinaccordancewithENATS12-6.

ItshouldbenotedthattheTLFprotectionsystemisnotadeviceforlimitingoverloadlevelsofindividualtransformers.Itshouldbeusedfor fault protection only.

The TLF system provides protection for overcurrent and earth faultsbetweentheMVcircuitbreakerandtheLVprotectiondevice. The selected TLF rating should be such that it allows for discriminationbetweentheMV&LVdevices.Thiswillensurethat the circuit breaker does not open for faults beyond the LV distributorprotection device.

When fitted with TLF, the ring main unit can also be configured to enable tripping of the circuit breaker from remote devices (Bukholtz,LVCBetc).

LucySwitchgearcustomersinEurope,theMiddleEast,AfricaandAsiaarecurrentlyusingTLFprotectionsystemwithintheirdistribution networks.

Fuse dimensions: Length 57mm x Diameter 13mm

LV distributionPanel

RMU

TLF

Transformer

Product characteristics Circuit breaker protection

Recommended TLF settings

Advantage of vacuum circuit breaker with TLF over HV fuses

*NoissueswithtransfercurrentswitchingtoIEC62271-105,whichminimizestheMVArating

Advantage of vacuum circuit breaker with TLF over protection relays

Transformer ratings (kVA)

200 315 500 800 1000 1250 1600 2000

Rated voltage (kV) TLF fuse rating (A)

CT ratio

50/5

Earth fault setting =25A

(instantaneous trip)

3.3 10A

6.6 5A 10A 15A

11 3A 5A 10A 15A

13.8 3A 5A 10A 15A

24 3A 5A 7.5A

CT ratio

100/5

Earth fault setting =30A

(instantaneous trip)

3.3 5A 10A 15A

6.6 5A 7.5A 12.5A 15A

11 5A 7.5A 10A 12.5A 15A

13.8 5A 7.5A 10A 12.5A 15A

24 5A 5A 7.5A

Feature VCB with TLF Fuse switch

Overall cost of units Similar

Approximatefusereplacementcost $5 $50

Maximumratingoftransformer,canbeprotected 2MVA* 1MVA

Maximumratednormalcurrent 630A 200A

Physical size of fuses Small Large

Possibility of some pollution while changing fuses causing PD and flash over issues No Yes

Fuse location inside the unit LV side HVside

Range of fuses required for different rated transformers VerysmallwithmultiratioCT Large

Feature VCB with TLF Protection relay

Installationcostoffunction Low High

Auxiliarypowersourceforoperation Not required Asrequired

Delay in activation of trip function due to capacitor charging time lag Not delay Delay

Employeetrainingonsettingtrippingcurves Not required Required

Additionaltrainingondifferentmanufacturersettingupprocedure Not required Required

Maintenanceandrepaircost Low High

Operating temperature limitations None Upto70°C

Range of fuses required for different rated transformers Yes Yes

Over current and earth fault protection Yes Yes

Protection relays TheAegisrangecanbefittedwithself-poweredrelaysforprotectingthe transformer or downstream network from fault currents by trippingtheCircuitBreaker.Theserelaysincorporatemanyadvancedfeatures and have a variety of settings to provide discrimination protection in networks. The self-powered feature eliminates reliance onexternalpowersourcesandincreasestheperformanceandreliability of the protection function.

TotherightarethetechnicalcharacteristicsoftheWoodwardWIP1relay,offeredasastandardontheAegisrange(iforderedwithrelayfunction).Othermanufacturers’relayscanalsobeincorporatedintothe units on request.

Other manufacturers’ relays are also available on request, please contact our local sales office for more information.

Key •Standard O Option

Protection CT (current transformers) for TLF and relaysTheprotectionCTareusedinconjunctionwithRelaysorTLFprotectiontoprotectawide(kVA)rangeofdistributiontransformers.AcomprehensiverangeofCT(currenttransformers)isavailable to suit varied application requirements.

DualRatioCT100/50/-

DualRatioCT200:100/-

TripleRatioCT150:100:50/-

AnextensiverangeofadditionalCT’sareavailableonrequest,pleasecontact our local sales office for more information.

Manufacturer Woodward

Range WIP1

Functions

Phase overcurrent •

Short circuit protection •

Number of overcurrent elements 2

Earthovercurrent •

Number of earth overcurrent elements 2

Characteristics

Display(measuringvaluesandparameters) •

Setting via buttons •

StandardCT 1A

LEDpickup •

LEDtripindicator •

Flag indication output •

Fault memory •

Clock •

Password protection •

Electroimpulseandrelaycontactoutput •

Number of output relays 3C/O

Inputremotetripping •

Interface O

RS485interfacewithproopendataprotocol O

RS-485interfacewithModbusprotocol O

Additionalpowersupply O

Product characteristics Circuit breaker protection

Product characteristics Options and accessories

Secondary injection Secondary injection is used to test the relays or TLF operation withoutswitchingonthehighvoltagesupplytotheunit.AlowvoltageisappliedtothesecondarysideoftheCTconnection(locatedinterminalbox)totesttheoperationoftheprotectiondevices at the time of commissioning and routine tests.

Actuators (motorised)Aegisunitsarefittedwith24VDCmotors, which can be powered from theGeminiremoteterminalunit(RTU)24VDCbatteryintheeventofmains ACsupplyfailure.

Cable compartment Allthecableclamps,glandsandcablecompartmentsealingdevicesareavailableasretrofitoptions.Belowisthelistofclampsavailableinmetal(steel)andplastics.

• Single3corecable

• 3singlecorecables

Anextensiverangeofadditionalcable compartment clamps and sealing devices are available on request, please contact our local sales office for more information.

3 single core cableSingle 3 core cable

Shunt trip coilsShunt trips are magnetic coils and are used to trip circuit breakers through local push buttons, RTUs or additional transformer protection devices. Shunt trips are available in the followingvoltages;

• DCvoltage:12V,24V,48Vand110V

• ACvoltages:110V,240V

• Multiplevoltagerange:24VDC–240VAC

Earthfault indicators (EFI)Earthfaultindicators(EFI)areusedforrapidlocationandisolationof faults on medium voltage networks in open loop ring main networks. When the unit detects asymmetrical currents greater than 50Ainthe3phasecableanearthfaultisindicatedbymeansofaflashingLEDormechanicalflag.

BelowisthelistofEFIsavailablefortheAegisrange.

Key•Standard O Option Other manufacturers’ EFIs are also available on request, please contact our local sales office for more information.

Manufacturer model: Suparule Sensorform BLZ-50 BFZ-50 MFZ-50 MLZ-50 CFZ-50 CLZ-50

Features

Power source 3.6V lithium ½ AA 850mAH battery 110-240V a.c. CT on current carrying phase

Voltage range 1 – 38kV

Trip current 50A

Primary indication LED Mech-flag (RED) LED Mech-flag (RED) LED

Flashing duration >1000 hrs - - 10 hrs - 10 hrs

Minimum fault duration 2.5 cycles

Manual reset Push button

Automatic timer reset 4 or 8 hrs selectable 10 secs after mains restore

Manual trip test Push button

Operating temperature -40°C to +80°C

Operating humidity 0-100% RH

Ingress protection IP65

Current sensor diameter: CT100: 100mm • • • • • •

CT150: 150mm O O O O O O

CT300: 300mm O O O O O O

Remote flashing LED indicator O O O O O O

Auxiliary relay, 1N/O latching O O O O O O

Airmeteringunit

AMU features• Busbarmeteringwithextensibilityonbothsides

• 17.5kVand630Arating

• Ratedlightingimpulsevoltage(BIL)95kV

• Powerfrequencyvoltage38kV

• IP41forindoorinstallation

• DIN400typeCbushingsforbusbarconnection

• 20kA/1secIACrating

• Ambientoperationtemperature-25̊ Cto40̊ C

• HVfuseprotectionforVT

• Anti-condensationspaceheater(option)

• WiderangeofCTandVT

AMU low voltage compartment• Facilitytolockandsealtheterminal(marshaling)box

• ProvisiontodisconnectandshortcircuittheCTs

• DIN96sizeKWHmeter,ammeterandvoltmeters

• MCB/fuseprotectionforVTsecondaryside

Busbar metering

Air metering unit

The Gemini RTU is an advanced, highly flexible and ultra-efficient solution for remote operation and control of electrical distribution networks. Enclosed in a stainless steel casing for maximum protection, the Gemini RTU is designed to operate in the most demanding environments.

The key features of the Gemini range are:• Embeddedautochangeoverandautosectionalisingfunctions

• Controlandmonitoringofupto4motorisedfunctions(switchesorcircuitbreakers)

• Inbuiltearthandfaultpassageindicators

• Advancedmonitoringofcurrent,voltage,batterycondition,temperature compensation, switching status, automatic cooling system, gas pressure etc

• Flexiblecommunicationthroughradio,RS232,RS485,packetdatanetwork,GSM,GPRS,PSTN,Bluetooth,ethernetTCP/IP,opticalfibreandSMSmessaging

• AdvancedbatterybacktooperateundermainsACinputfailure

• FullytestedtoENATS(EnergyNetworkAssociationTechnicalStandards),EMCandenvironmentalstandards

Switchgear automation

In addition to the features opposite, remotely monitored and controlled switchgear provides significant benefits to customers such as:• Reducedtimeindiagnosingsystemanomaliesaswell

as locating and isolating faulty sections of network

• Fasterresponsetimeandquicknetworkreconfiguration

• Optimisationofassetmanagementthroughtheimplementationof customised automation schemes

• Reducedoperationalcostassociatedwithroutinenetwork switching

• Increasedoperatorsafety

Gemini RTU specification

General Enclosure Stainless steelDegree of protection IP54Operating temperature -25 to 60°CRelative humidity Up to 95%Method of mounting Floor, wall, pole or RMU switchgearDimensions H 600mm, W 400mm, D 210mm

RTU hardware Processor module ARM9 microprocessorPower supply 110 / 230V AC supply – over and under-voltage protectionBattery type 2 x 12V DC, sealed lead acid or high temperature NiMHBattery charger Temperature compensated, fully protectedControl electronics PIC based processor with expandable I2C busInner enclosure Stainless steelVentilation Microprocessor controlled, long life fan with baffle air intake filter

Inputs / outputs Digital inputs 14 isolated digital inputs – expandableDigital outputs 8 isolated digital outputs – expandableAnalogue inputs 3 CT analogue inputs as standard (DIs reduced to 11)Expansion I/O module 3 AIs / 4 DIs; 7 DIs / 2 DOs

Communications Communication interfaces 3 RS-232 for control (ethernet option), configuration and programming plus one expansion busProtocols DNP3, IEC 60870-5-101/104 and modbus (others on request)

Communication mediaRS-232 / 485, UHF / VHF radio, packet data, GSM / GPRS / EDGE, PTSN, leased or twisted pair lines, optical fibre, ethernet (TCP/IP) and Bluetooth

Switchgear interface ControlsMembrane push-button for open / close operations in conjunction with activate push-button up to four switching functions (standard 1, 2, 3 or 4 switch control formats)Selector control for off, local or remote modes

Indications

RTU services such as DC / AC supplies, dummy control and debug LEDsSwitch status LEDs for open / closed positionsControl Output LEDs (illuminates when active)Configurable LED indications

Software Cables Plug-in, multi-core umbilicals to switchgearConfiguration Windows-based software

for configuration of:• Protocol parameters including device and I/O addresses• Parameters for the communications device• Parameters for digital, analogue and counter points• Automation sequences• Power saving routines• Battery tests

The bushings for each ring switch and circuit breakers are located at the front of the unit. All sets of bushings are type ‘C’ with in-line bolted connections M16 threaded in accordance with

EN50181.The bushings are accessible by removing the interlocked cable compartment covers at the front of the unit.

Themaximumcablesizethatcanbeusedis:

• 300mm²3-core

• 500mm²single-core.

ThefollowingtypesofterminationscanbeusedwiththeAegis:

Insulatingbushingboot Heatshrinkinsulatingbushingboot

Profile'C'boltedseparable

Cablebushingsandcableterminations

General

Rated voltage kV 12 17.5 24

Rated frequency Hz 50 60 50

Rated lightning impulse withstand voltage

Directly earthed kV 95 95 125

Across disconnector kV 110 110 145

Rated power frequency withstand voltage

Directly earthed kV 38 38 50

Across disconnector kV 45 45 60

Protection

Tank with HV parts IP IP67

LV control box IP IP41

Front face + mechanism IP IP41

Cable box IP IP41

Mechanical impact protection IK IK07

Internal arc rating

Freestanding kA 1 sec 21kA 1 Sec

Optional cable box kA 1 sec 21kA 1 Sec

AF (gas chamber) Standard

AFL (gas chamber) Optional

AFLR (gas chamber) Optional

SF6 gas

Filled pressure Bar (G) 0.4 0.4 0.5

Across disconnector Bar (G) 0 0 0.3

Annual leakage rate ≤0.01% per annum≥

Installation conditions

Ambient air temperature (without derating) °C 40 55 55

Maximum altitude (without derating)* M 1000

Relative humidity (max) - over period of 24hrs (IEC 62271-1, sub-clause 2.1)

95%

BusBarsRated normal current A 630 400 400

Rated short time withstand current

1 sec kA - 21 -

3 sec kA 20 - 20

Rated peak withstand current kA 50 54.6 50

Load break switch: L functionRated normal current A 630 400 400

Rated active load breaking current A 630 400 400

Rated short circuit making current kA 50 54.6 50

Rated cable charging breaking current A 10 10 16


Main electrical circuit

1 sec kA - 21 -

3 sec kA 20 - 20

Earthing circuit

1 sec kA - 21 -

3 sec kA 20 - 20

Mechanical endurance class

Load break switch M2/5000 M2/5000 M2/5000

Earth switch M0/1000 M0/1000 M0/1000

Electrical endurance class short circuit making

Load break switch E3/5 E1/2 E1/2

Earth switch E3/5 E1/2 E1/2

Operating mechanism

Local: close / open Hand Lever

Remote: close / open Motor

Circuit breaker V and T functionRated normal current

V function A 630 - -

T function A 250 250 400

Rated active load breaking current A 630 250 400

Rated short circuit breaking current kA 20 21 20

Rated short circuit making current kA 50 54.6 50

Rated cable charging breaking current A 25 31.5 31.5


Main electrical circuit

1 sec kA - 21 -

3 sec kA 20 - 20

Earthing circuit

1 sec kA - 21 -

3 sec kA 20 - 20

Mechanical endurance class

Circuit breaker M1/2000

Earth switch M0/1000

Electrical endurance class

Circuit breaker E2/2000

Earth switch E1

Operating mechanism

Tripping time ms >80 >80 >80

Operating sequence for mechanism 0-3min-CO-3min-CO

Local: close / open Hand lever / pushbutton

Remote: close / open Motor / coil

Technical data sheet

* For higher altitude applications please contact local Lucy Switchgear sales office.

DimensionsAegis ring main unit

500mm 840mm 1235mm

1650mm

1: L function height is not affected with addition of E&T facility

2: For V & T functions with E&T facility add 150mm to overall height “A”of the unit

Cable Termination Height (Distance between cable clamp and bushings)

Dim A

Dim B

450 1095 575

600 1245 727

800 1455 940

886mm

A

B

50mm

1-function 2-functions 3-functions

4-functions

DimensionsAir metering unit

967mm617mm

1244mm

Order quantity / number of units (please fill separate form for each type)

Extensibility (choose any one) Non extensible

Extensible left hand right hand both sides

IP rating: Installation conditions (choose any one) IP54 Metal clad outdoor (available for non extensible range only)

IP41 Indoor (available for extensible and non extensible range)Colour RA L7032 as standard (other colours are only available on request)

Features common to all functions

Low gas pressure alarm 1N/O (tick if needed, only one per tank)

Number of ways and functions needed at each position:

Starting from the left, write any one of L, V or T in each box

depending upon the number of ways needed.

For example:

Motor wiring (tick for each selected function, if needed)

Motor for remote operation (tick for each selected function, if needed)

Cable Earth & Test facility (E&T) (tick for each selected function, if needed)

Cable bushings termination height (choose any one) 450

600

810

Cable box: Internal arc proof

VPIS (choose any one) Neon indicator with push to test button

Pfisterer socket

Auxiliary switches (choose any one) 1N/O, 1N/C

2N/O, 2N/C

Cable compartment

Cable clamp material (choose any one) Metal

Plastic

Cable entry type (choose any one) 3 single core cable

Single 3 core cable

Voltage rating (choose any one) 12KV

17.5kV

24kV

First Second Third Fourth (e.g. 1 function) (e.g. 2 function) (e.g. 3 function) (e.g. 4 function)

L V T L

Name:

Address:

To use this form, please photocopy and return the completed form to your nearest Lucy Switchgear office (addresses can be found on the back cover)

Company:

Tel no:

Fax no:

Email:

Order number:

Aegisorderform

Voltage range

Functions current ratings 12kV 17.5kV 24kV

L 630A 400A 400A

T 250A 250A 400A

V 630A - -

Optional features applicable to L (Load Break Switch) function only

Rated current (choose any one) 400 Amps (available for 17.5 and 24kV)

630 Amps (only available for 12kV)

EFI (choose any one) BFZ-50

MFZ-50

MLZ-50

CFZ-50

CLZ-50

BLZ-50

Any other*

Optional features applicable to V or T (Vacuum Circuit Breaker) function only

Secondary injection (tick for each selected function, if needed)

Protection device (choose any one) TLF (Time Limit Fuses)

WIP1

Other*

Protection (CT) current transformer for TLF or Relay (choose any one)

Dual (Primary) Ratio CT 100:50/-

Dual (Primary) Ratio CT 200:100/-

Triple (Primary) Ratio CT 150:100:50/-

Manual Push To Trip button (tick for each selected function, if needed)

Shunt Trips (choose any one) 12V DC

24V DC

48V DC

110V DC

110V AC

240V AC

Multiple voltage (24V DC - 240VDC)

Note:TheringmainunitsgaschamberaresuppliedwithAFL(Frontandsideways)rating.IfyourequireunitswithAFLR(Front,sideandrear)ratingspleasecontactourlocalsalesoffice.

*Please fill the details in comment section below.

Comments

To find out more about us, visit:

www.lucyswitchgear.com

DisclaimerLucy Switchgear has a policy of continuous research and development and accordingly reserves the right to change the design and specification of its products without prior notice.

LSAEG0114

Lucy Middle East FZEPO Box 17335, Jebel Ali, Dubai, United Arab Emirates Tel: +97 148 129 999Fax: +97 148 129 900 Email: [email protected]

Lucy Switchgear Ltd. Howland Road, Thame, Oxfordshire,OX9 3UJ, United Kingdom Tel: +44 1844 267 267 GeneralTel: +44 1844 267 222 SalesFax: +44 1844 267 223 Email: [email protected]

Lucy Switchgear worldwide offices

Lucy Asia Pacific Sdn BhdL13A-03-03A, PJX-HM Shah Tower,No16A Jalan Persiaran Barat,46050 Petaling Jaya, Selangor, Malaysia Tel: +603 74910700Fax: +603 79316923Email: [email protected]

Lucy Electric (Beijing) Co. Ltd.卢西电器（北京）有限公司北京市朝阳区东三环北路霞光里18号佳程广场A座1122室邮编:100027电话:+86 1059 231 176传真:+86 1059 231 177电子邮件:[email protected]

Lucy Switchgear Arabia Co. Ltd.Novotel Business Centre,P.O. Box 35340, Dammam 31488,Saudi ArabiaTel: +966 3 8147 910Fax: +966 3 8147 914Email: [email protected]

Lucy Switchgear (South Africa)Unit 2, Cranberry Industrial Park, Cranberry StreetLaser Park, Honeydew, 2170, South AfricaTel: +27 11 025 7490Fax: +27 11 794 3277Email: [email protected]

Postal Address:P.O. Box 1078, Honeydew, 2040

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