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No.4 Business Building-2707, China Central Place
Chaoyang District, Beijing-100021, China

Email:[email protected]

北京大林绿源环保科技有限公司

BEIJING DAELIM GREEN EP TECH CO., LTD.

Operation & Maintenance Manual

SinglePhase&ThreePhasePad-mountLiquid

CompartmentalTransformer

Filled

KVA: Up to 2500 KVA

PrimaryVoltage:Upto34.5KV

BIL: Up to 200 KV

Содержание GREEN EP TECH

Страница 1: ...District Beijing 100021 China Email info daelim electric com BEIJING DAELIM GREEN EP TECH CO LTD Operation Maintenance Manual SinglePhase ThreePhasePad mountLiquid CompartmentalTransformer Filled KVA...

Страница 2: ...age for more than 90 days 7 3 3 Removable Radiators 7 4 Installation 7 4 1 Pre service inspection 7 4 2 Location Consideration 8 4 3 Mounting the Transformer 8 4 4 External Connection 8 Ground Connect...

Страница 3: ...ing 27 Bay O Net Fuses 27 Bay O Net fuse replacement instruction Fig 17 B 28 Dry Well Canister Fuses 28 Non Loadbreak Dry Well Canister Fuse replacement instruction Fig 18 B 29 Loadbreak Dry Well Cani...

Страница 4: ...usiness Building 2707 China Central Place Email info daelim electric com Chaoyang District Beijing 100021 China BEIJING DAELIM GREEN EP TECH CO LTD 9 2 Routine Inspection 33 9 3 Dielectric Fluid Sampl...

Страница 5: ...al injury hazards Obey all safetymessagesthat follow thissymbol to avoid possibleinjuryor death Safety Instructions WARNING A potential risk exists if operating instructions are not followed which cou...

Страница 6: ...eightreceipt Da el i m Industries ships most units FOB Point of Manufacture and it is the customer s responsibility to file a claim against the carrier Note Ifacceptanceofthetransformerismadeanddamage...

Страница 7: ...lacewhereaccessibilitytoacraneorother overheadliftingdeviceislimitedornotavailable Iftheunitmustberolled insurethattheareaislevel free from obstructions and debris and is of sufficient strength and th...

Страница 8: ...r assemblies shouldnever be stored directly on the ground or in areas in which water could collect near sealed openings 4 Installation 4 1 Pre service inspection ELECTRICALSHOCK Neverattempttochangeco...

Страница 9: ...unted Pressure relief device PRD also referred toas Explosion Reliefdevice CAUTION Check with local authorities in the intended installation area to verify compliance of any and all applicable laws 4...

Страница 10: ...ndedandthetransformeris connectedtothepowerdistributionsystem thenthetankshouldbe regardedasenergized Anenergized tankisextremelydangerous Contactwithanenergizedtank canshock burn or causedeath Daelim...

Страница 11: ...turallyexpandandcontractcausingthegasfilledheadspaceinsidethetanktofluctuateinpressure CAUTION Before performing any kind of service which may include but is not limited to opening the tank or inspect...

Страница 12: ...rader Valve Fig 4 B is provided to facilitate addition of dielectric fluid and Nitrogen to the tank 5 3 Drain Valve and Fluid Sampler TheDrainValveandFluidSampler Fig 5 isprovidedtofacilitatesamplingo...

Страница 13: ...htseparationbetweentheinterioroilandtheoutsidetominimize potential leaks Daelim utilizes several different brands and models of liquid level gauges depending on the application Transformers can be sup...

Страница 14: ...dneedle maximumindicator can be reset by turning the knob on the front of the gauge face The temperature gauge consists of a long thermocouple that extends into the tank inside a protective thermocoup...

Страница 15: ...armed by a consistent negative pressure for example if it s winter time In Wisconsin it will probably be negative for the duration of the season However if the gauge consistently readszeroanddoesnotap...

Страница 16: ...Valveasshownin Fig 3 whichonlyreleasespressureslowlytoaccountforthermal expansionandcontraction APRDiscovermountedandequippedwithaspringloadeddiaphragmthatis factorysettoopenatapredeterminedpressurele...

Страница 17: ...l in relay ThisRPRR Fig 10 isadevicefordetectionofsuddenpressureeventsbasedontherateofpressurerisein Thetransformer Whenadangerous pressurerise hasbeendetected therapidpressurerise relay RPRR will cha...

Страница 18: ...his system consists of thermocouples wound intoeachcoilofthetransformerinstrategiclocationstoaccuratelymonitorthetemperatureinsidethecoil itself Thethermocoupleleadsarebrought outofthetankthroughaseal...

Страница 19: ...ided optionally for units supplied with radiators to increase the KVA capacityofthetransformerbyupto25 withoutoverheatingorexperiencingdetrimentaleffects Thesize andnumberoffanscanvary dependingonthea...

Страница 20: ...ormers may be equipped with CT s for various reasons such as metering or relaying they also may be equipped with meters mounted on the transformer Different types and classes of CT s are used accordin...

Страница 21: ...tches 6 1 Tap Changers ExternallyoperatedNo LoadTapchanger NLTC Fig 14A B isprovidedforalltransformers unless otherwise specified to change from one operating voltage to another Typical taps are confi...

Страница 22: ...nsformer secondary connected equipment verify that all transformer secondaryterminalshavezerovoltageandgroundthetransformersecondaryterminalsfollowing industryacceptedsafegroundingpractices Groundings...

Страница 23: ...unt transformerstoselectthefeedsource openorclosethefeed thruloopandopenorclosethetransformer The spring loaded activating mechanism ensures quick load break action and positive contact engagement thr...

Страница 24: ...er nameplate WARNING The transformer must be de energized and grounded before dual voltage switch is operated Attempting to change dual voltage switch on an energized transformer may result in damage...

Страница 25: ...eplate WARNING The transformer must be de energized and grounded before dual voltage switch is operated Attempting to change dual voltage switch on an energized transformer may result in damage to the...

Страница 26: ...ct surge arresters before running impulse or applied potential tests on the transformer Surge Arresters Fig 16 are provided optionally in padmount transformers to protect equipment and cables from ove...

Страница 27: ...100021 China Email info daelim electric com BEIJING DAELIM GREEN EP TECH CO LTD Live front SurgeArresters Live front Surge Arrester Fig 19 B is a polymer that houses a metal oxide Varistor to provide...

Страница 28: ...d Donotre energizesuspectedfailedequipment Afterinstallingfuses energizetransformerfroma remote upstreamsource WARNING Never attempt to remove fuses with pressure on the tank Severe burns and personal...

Страница 29: ...y O Net housing 5 Draw fuse holder out quickly 8 10 inches to interrupt load 6 Wait several seconds for fluid to drain from the fuse holder and remove from housing 7 Remove fuse cartridge from fuse ca...

Страница 30: ...4 set screws 3 Attach a hot stick to the fuse holder eye and pull out 4 Draw fuse holderout 5 Replace the fuse and reinsert the fuse with the fuse holder 6 Assemble by tightening 4 set screws Loadbre...

Страница 31: ...Solubility in water negligible 0 1 Viscosity 9 3TO9 5CsTat40 C 7 2 High Fire Point Dielectric fluid Padmount transformers filled with High Fire Point Dielectric fluid typically use Envirotemp FR3 flui...

Страница 32: ...in the winding due to excitation current and conductor loss duetocirculating current in parallelwindings These losseschange withthe excitation voltage Excitationcurrent no loadcurrent isthecurrentthat...

Страница 33: ...ngs to ground or between individual windings Insulation resistance tests are commonly measured in mega ohms or may be calculated from measurements of applied voltage and leakage current Temperature Ri...

Страница 34: ...conditions of the site into consideration Salty damp or otherwise corrosive environments will require shorter inspection intervals than dry and mild conditions Periodicallycheckbetweentheradiators ife...

Страница 35: ...ectric Fluid Sampling Dielectricfluid samplesshouldbetaken atleastonan annualbasisand analyzed byDGA Dissolved Gas Analysis RoutineDGAtestingisoneofthebestmethodsofdeterminingthe Health ofatransformer...

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