22kV Medium Voltage Switchgear/ Air Insulated Metal Clad Switchgear

22kV Medium Voltage Switchgear/ Air Insulated metal Clad Switchgear
Standards

The switchgear and main apparatus contained in it comply with the latest IEC Standards:
• IEC 62271-1for general purposes
• IEC 62271-200for the switchgear
• IEC 62271-102for the earthing switch
• IEC 62271-100for the circuit-breakers
• IEC 60071-2for the insulation coordination
• IEC 62271-106for the contactors
• IEC 60265-1for the switch-disconnectors
• IEC 60529for degree of protectionsServiceenvironment:
a)Airtemperature:Maximumtemperature:+40℃;Minimumtemperature:-25℃
b)Humidity:Monthlyaveragehumidity95%;Dailyaveragehumidity90%.
c)Altitudeabovesealevel:Maximuminstallationaltitude:2500m
d)Ambientairnotapparentlypollutedbycorrosiveandflammablegas,vaporetc.
e)Nofrequentviolentshake
Technical data
Rated voltageRated insulation voltageRated power frequency withstand voltageRated lightning impulse withstand voltageRated frequencyRated short time withstand currentPeak currentInternal arc withstand currentMain busbar rated currentCircuit-breaker rated currentCircuit-breaker rated current with forced ventilationVaccum Circuit Breaker Fully type-tested
The switchgear has undergone all the tests required by the international (IEC) Standards.Each switchgear unit is subjected to routine tests in the factory before delivery. These tests are intended to provide a functional check ofthe switchgear based on the specific characteristics ofeach installation.
IEC type tests
• Short-time and peak withstand current
• Temperature rise
• Internal arc capability
• Dielectric test
• Making and breaking capacity of circuit-breaker
• Earthing switch making capacity (top application)
• Mechanical operations of circuit-breaker and line
disconnector
• IP degree and impact test

IEC routine factory tests
• Visual inspection and check
• Mechanical sequence operations
• Cabling check
• Electrical sequence operations
• Power frequency withstand voltage
• Measurement of the resistance of the main circuits
• Secondary insulation test
Glances inworkshop:
Why choose us Hunan Electric Union is a diverse electric equipment manufacturer group located in middle south of China.LimitInnovationWeareinatraditionalbusinesssincetransformersandswitchesaredevelopedoverhundredyears,eventhesocalled“newtechnologies”ofcastresintechnology,vacuumarcdistinguishtechnologyanddigital
protectiontechnologyhavebeenusedfordecades.
basedonindustrycharacteristicsandtofocusonproductsmanufacturingitself,weimplementa“limitinnovation”policyonourmatureproducts1.Updateproductsonlyiflateststandardsrevisionofficiallyissued
2.Producenewproductsonlyifrelatedtechnologyarematurelydeveloped.
3.Focuslimitinnovationonexternalupdatestomakeproductseasytouseandtransport.OurMission

Afterseveraldecadesofreformandopening,thedevelopmentofChina'selectricpowerhasmadegreatprogress,themanufacturingindustrieshavegraduallyenteredaworld-classlevel,andmanywell-knowninternationalcompanieshavechosentosetupfactoriesinChina.
Atthesametime,werealizedthatmanydevelopingcountries'powerinfrastructuresarestillverypoor,soourmissionistoprovidethemostcosteffectiveproductstoworld,andtheseproductsaretransformedtomeetrelevantinternational
standards(IECandIEEE)basedonwidelyusedandprovenreliableproductsinChinainrecentthirtyyears.
Eventually,wecouldhelpthedevelopingregionstoupdatetheirenergyqualityandimprovepeople’slife.
Products
1.OilFilledTransformer6-252kV
2. Gas insulated switchgear (GIS) 72.5-252kV
3. CastResin Dry Transformer6-36kV
4.PadMountedTransformer4.16-46kV
5.SF6FilledRingmainUnit6-36kV
6.MVSwitchgear4.16-36kV
6.LVSwitchboard110-690V
7.SF6CircuitBreaker36-252kV
8.DisconnectingSwitch36-1100kV
9.PTandCT6-252kV
10.SoftStarter0.4-15kV
11. Compact Substation
Services
1.ProjectConsulting
2.CostEstimation
3.BiddingPrepareProductsFeatures
Wedefinedfourrulestoestimateourproducts,
1.Standards:AllproductsshouldcomplywithIECorIEEEstandardcodes.
2.Requirements:Allproductsshouldcomplywithtechnicalagreementfromenduser.
3.EasytoUse:Allproductsshouldtestedinfactoryanddeliverwithfull,readabledrawingsandmanuals.
4.FittoContainer:Allproductsshoulddesignedtoloadonacontainer.
Certificates
Customers all Over The World
Packing
Send your technical requirement or Single Line Diagram to my whatsapp, wechat or email, Wecouldworktogethertowinaprojectcontract.