Pole Mounted Transformer Installation le Tataiso ea Ts'ebetso

Tataiso ena e akaretsa ts'ebetso, ts'ebetso le tlhokomelo ea li-transformer tse kentsoeng ka karolo e le 'ngoe ea oli. E ipapisitse le libuka tsa botekgeniki tsa lisebelisoa le litekanyetso tsa indasteri joalo ka IEEE C57.12.00. Ho kenya ts'ebetso e nepahetseng, ts'ebetso e nepahetseng, le tlhokomelo ea kamehla li bohlokoa bakeng sa ts'ebeletso e bolokehileng le e ts'epahalang ea li-transformer. Tataiso ena e kenyelletsa ho amohela le ho ts'oara, ho kenya, likhokahano tsa motlakase, ho theola fatše, ho hlahloba pele le ka mor'a matla, ts'ebetso ea sesebelisoa sa ts'ireletso, tlhahlobo ea kamehla, le ts'ebetso ea mokelikeli.

Thepa e koahetsoeng: Li-transformer tsa kabo ea oli ea mokhahlelo o le mong (letoto le tloaelehileng)
Litekanyetso tse sebetsang: IEEE C57.12.00, IEEE C57.12.90, NEMA TR1, NFPA 70E
 

 

 

 

 

 

1.1 Litlhaloso tsa boemo ba kotsi

Lentsoe la pontsho	Tlhaloso
KOTSI	Boemo bo kotsi bo haufi, boo, ha bo sa qojoe, bo tla fella ka lefu, kotsi e mpe kapa tšenyo ea lisebelisoa.
TLHOKOMELO	Boemo bo ka bang kotsi boo, ha bo sa qojoe, bo ka bakang lefu, kotsi e mpe kapa tšenyo ea lisebelisoa.
TLHOKOMELO	Boemo bo ka bang kotsi boo, ha bo sa qojoe, bo ka bakang kotsi e nyane/e itekanetseng kapa tshenyo ea thepa.

 

1.2 Litlhokahalo tse akaretsang tsa polokeho

Feelabasebetsi ba tšoanelehang(ea koetliselitsoeng ho kenya lisebelisoa tse phahameng tsa motlakase, tlhokomelo, ts'ebetso, ts'ebeliso e nepahetseng ea PPE, le thuso ea pele) e ka sebetsa sesebelisoa sena.

Pele ho tlhokomelo kapa tlhahlobo efe kapa efe:

• Fokotsa matla a transformer ho tsoa ho asebaka se hole.
• Sebelisa sesebelisoa se nepahetseng sa motlakase ho netefatsali-voltage tsa zero ho lihlahla tsohle tse phahameng tsa motlakase le tse tlase.
• Tlosa li-terminals tsohle hantle(ea mathomo le ea bobeli).
• Nahana ka monyetla oa ho fepa ka morao (mohlala, jenereithara ea standby).

Le ka mohla u se ke ua itšetleha feela ka ho tlosoa ha fuse kapa ho fetola boemo e le bopaki ba ho tima matla.

Apara PPE e loketseng (liatlana tse sireletsang tšireletso, thebe ea sefahleho, sutu ea arc-flash) joalokaha ho hlokoa ke NFPA 70E.

Se ke oa sebelisa lisebelisoa tse feto-fetohang tse kenngoeng ke metsi ha mocheso oa mokelikeli o kenang ka tlase o le ka tlase:

• Oli e tloaelehileng ea liminerale kapa mokelikeli oa silicone: -20 degree
• R‑ Mokelikeli oa mocheso: 0 degree
• FR3™ mokelikeli oa tlhaho oa ester: -10 degree

 

 

 

 

 

2.1 Ho fumana tlhahlobo (pele ho laolloa)

Ntho	Ketso
Letlapa la mabitso	Netefatsa nomoro ea seriale, kVA, lintlha tsa HV/LV, impedance, tatellano ea mofuta oa mokelikeli.
Tšenyo ea kantle	Sheba li-dents, li-scratches, li-radiator tse holofetseng, tšenyo ea pente.
Ho dutla	Hlahloba li-welds, lihlahla, li-gauge, li-valve bakeng sa matheba a oli.
Lisebelisoa	Netefatsa tekanyo ea khatello / vacuum gauge, tekanyo ea boemo ba oli, thermometer, valve ea drain, li-cup, li-fuse, libuka, mangolo a temoso a teng.
Khatello-vacuum gauge	Ho bala ho lokela ho fapana le mocheso o tikolohong. Lefela la kamehla le ka supa ho dutla.

Haeba tšenyo kapa khaello e fumanoa,lengolo la molao la thepa, nka linepe, kenya kopo ho mofani oa thepa, 'me u tsebise moetsi.

 

2.2 Ho phahamisa le ho tšoara

Crane / hoist lifting:

• Sebelisafeela lisebelisoa tsa ho phahamisa tse fanoeng. Se ke oa phahamisa lihlahla, li-radiator kapa masoba a tlamang.
• Lisebelisoa tsa ho phahamisa (lihakisi, li-slings, slinger bar) li tlameha ho lekanyetsoa bakeng sa boima ba kakaretso (sheba nameplate).
• Sebelisa sethala ho boloka likhoele tse otlolohileng (ka tlase ho kapa ho lekana le likhato tse 20 ho tloha holimo).
• Ho sekama ho hoholo nakong ea lifti:15℃ho tloha holimo.
• Ha mocheso o le ka tlase ho -20 degrees, tšoara ka hloko ho qoba tšenyo e senyang.

Ho sebetsana le forklift:

• Ke feela bakeng sa li-transformer tse kentsoeng ka mokhoa o sireletsehileng holim'a pallet ea ho tsamaisa thepa.
• Lifereko li tlameha ho atolosa ka ho feletseng tlas'a pallet.
• Le ka mohlaphahamisa transformer e sa palamang ka forklift.

 

2.3 Polokelo

Nako e khuts'oane: Boloka ka har'a sephutheloana sa mantlha sebakeng se hloekileng, se omileng, se sa senyeheng.

Long‑term (>Likhoeli tse 3):

• Boloka sebakeng se tiileng, se lekaneng. Sebelisa liraka tsa polokelo.
• Se ke oa bokellanali-transformer - kotsi ea ho senyeha ha tanka le lihlahla.
• Hlahloba likhoeli tse ling le tse ling tse 3: tekanyo ea khatello, boemo ba oli, ho lutla, ho bola.
• Haeba tekanyo ea khatello e bala lefela kapa ho theoha ha oli, etsa lipatlisiso 'me u lokise ho lutla.
• Boloka khatello e nyane e ntle (3-4 PSIG) ka moea o omileng kapa naetrojene ha ho khonahala.

 

 

 

 

 

 

3.1 Khetho ea sebaka

Latela IEEE C57.12.00 "Usual Service Conditions":

• Bophahamo bo Tlase kapa bo lekana le 1000 m
• Thempereichara ea tikoloho -25℃ho isa ho +40 degree
• Ha ho lerōle le feteletseng, likhase tse senyang, ho thothomela, kapa kotsi ea likhohola.

Kenya sebakeng se ka fihlellehang feela ke basebetsi ba lumelletsoeng (mohlala, letlapa le notletsoeng kapa palo).

Boloka li-radiator (haeba li le teng) li se na litšitiso.

 

3.2 Ho kenya lipalo

Sebelisa masakana a hanger a fanoeng bakeng sa ho hloma lipalo ka kotloloho.

Matla a pole a tlameha ho ts'ehetsa boima bo felletseng ba transformer (sheba nameplate).

Ka mor'a ho hloella, sekamela ka tsela efe kapa efeha ea lokela ho feta likhato tse 3. Ho sekama ho feteletseng ho ka:

• Fokotsa ho koahela metsi a sireletsang likarolo tse phelang.
• Senya ho potoloha ha pholiso.
• Fana ka litekanyo tse fosahetseng tsa oli.

 

3.3 Ho beha fatše

Sebelisa lesebaka se inehetseng sa motheo kapa nateka tanka.

Khondara ea fatše (hangata koporo, E kholo ho feta kapa e lekanang le 16 mm²) e tlameha ho lumellana le likhoutu tsa lehae.

Ho hanyetsa fatše ho lokela ho ba tlase ho ea kamoo ho hlokoang ke melao ea lehae (hangata Ka tlase ho kapa ho lekana le 10 Ω).

Le ka mohlasebelisa li-hanger brackets, lihlahla kapa likarolo tse ling tseo e seng tsa motheo bakeng sa ho thea fatše.

Kopanya bohle ba fumanehang ho se nke lehlakore ho tsamaiso e sa nke lehlakore.

 

3.4 likhokahano tsa HV le LV

Hloekisa 'me u bethefatsa libaka tsohle tsa likhokahanyo tsa ho nyalana pele u hokela.

Latela setšoantšo sa khokahanyo letlapeng la mabitso.

Tiisa liboutu ho boleng ba torque e fanoeng ho Lethathamo la 3 (sheba Karolo ea 8).

Qoba meroalo e mengata ea li-cantilever holim'a lihlahla (u se ke ua hula li-conductors ka thata haholo) - ho seng joalo ho ka ba le tšenyo ea bushing kapa gasket.

Li-terminal caps tse kentsoeng ka lehlakoreng la HV li thusa ho thibela ho kopana le liphoofolo tse hlaha.

 

3.5 Ho hlophisa bocha likhokahano tsa kahare tsa LV (haeba ho hlokahala)

Boemo: Transformer e nang le lihlahla tse tharo tsa LV, feme-set bakeng sa E/2E (mohlala. 120/240 V), empa e hloka motlakase oa E (mohlala. 120 V).

Mokhoa:

• Fokotsa matla, fatše, imolla khatello (sebetsa PRV).
• Tlosa sekoahelo sa transformer kapa sekoahelo sa letsoho (sheba Karolo ea 8.7).
• Hokela hape LV ho tloha letotong ho ea ho tse tšoanang joalo ka ha ho bonts'itsoe setšoantšong sa nameplate.
• Etsa bonnete ba hore likhokahano tsohle li tiile (sebelisa tafole ea torque), li-lead li kentsoe hantle, 'me ha li ame tanka kapa tse ling.
• Kenya sekoaelo hape, tlatsa boemo bo nepahetseng, lumella lihora tse 24 ho lula, ebe u etsa tlhahlobo ea karolelano ho netefatsa.

Ikopanye le moetsi haeba o sa tiisehe.

 

 

 

 

 

 

 

Transformer ha ea lokela ho matlafatsoa ho fihlela licheke le liteko tse latelang li phethiloe ka katleho.

Che.	Teko / Hlahloba	Lintlha	Boemo ba ho amohela
1	Teko ea tekanyo (TTR)	Sebelisa tlhahlobo ea karo-karolelano ea li-transformer libakeng tsohle tsa lipompo	Ka tlase ho kapa ho lekana le ±0.5%
2	Ho hanyetsa mocheso	1000 V megger; sebaka se matsoelintsoeke le se matsoelintsoeke	E kholo ho feta kapa e lekana le 1.0 GΩ (hloekile/omileng)
3	Boemo ba ho switjha ha li-multiple-voltage	Beha joalo ka letlapa la mabitso, sekoti sa ho notlela se kentsoe	Boemo bo nepahetseng
4	Tlanya boemo ba switjha	E behiloe ho matla a lekantsoeng (hangata theipi e bohareng)	Boemo bo nepahetseng
5	Ho thethefatsa	Tekanyo ea pono + ea ho hanyetsa fatše	Sireletsehile, ka har'a moeli oa lehae
6	Lihokelo tse koetsoeng	Tlhahlobo ea torque ho ea ho Litafole 1-4	Ka har'a sebaka sa torque
7	Boemo ba mokelikeli	Level gauge kapa sight plug	Pakeng tsa "Phahameng" le "Low"
8	Mocheso oa metsi	Bala thermometer	Ha e tlase bonyane bo lumelletsoeng (sheba ka tlase)
9	Internal Fault Detector (IFD)	Tlosa senotlolo sa orange	Senotlolo se tlositsoe
10	Li-transformer tsa hajoale (CTs)	Haeba e sa hokahane le mojaro, lithapo li tlameha ho khutsufatsoa le ho theoa fatše	Ha ho potoloho e bulehileng
11	Wiring ea lisebelisoa	Taolo, li-circuits tsa alamo - ha ho na likhokahano tse hlephileng kapa li-insulation tse senyehileng	Boemo bo botle
12	Qetellong ea tanka	Pente - ha ho na tšenyo, mafome	E amohelehang

 

Bonyane mocheso o lumelletsoeng oa mokelikeli pele o matlafatsa:

• Oli ea liminerale / silicone: -20 likhato
• Mocheso oa R‑: 0 degree
• FR3: -10 likhato

Haeba mokelikeli o bata haholo, o futhumale butle-butle (mohlala, ka likobo tsa ho futhumatsa) pele o ka o matlafatsa.

 

 

 

 

 

 

Kamora ho fumana matla a pele (haholo-holo ho tsoa sebakeng se hole), etsa:

• Netefatsa motlakase oa bobeli- E lokela ho ba ka hare ho ± 5% ea boleng bo lekantsoeng ba nameplate.
• Hlahloba ho dutla- Lekola litšepe, lihlahla, li-valve, li-gauge bakeng sa phepelo efe kapa efe ea oli.
• Sheba ts'ebetso- Ha ho na ho thothomela ho sa tloaelehang, mosi, tlhase kapa lerata le sa tloaelehang.
• Sheba li-gauge- Boemo ba oli bo lokela ho nyoloha (ha mocheso o ntse o eketseha), thermometer e lokela ho eketseha butle-butle, tekanyo ea khatello-vacuum e lokela ho bontša khatello e ntle.
• Molumo o utloahalang- E tloaelehileng ke "hum" e tsitsitseng (magnetostriction).

Ho petsoha / ho qhoma ha nakoana → ho qhalana ho ka bang teng holim'a lihlahla.

Ho lla ka molumo oa arcing → khokahano e hlephileng ea kahare kapa taba ea mantlha.

Ho lla haholo → ho hlasimoloha ho feta tekano kapa ho tlala matla.

• Infrared thermography (boikhethelo)- Lekola likhokahano tsa terminal bakeng sa libaka tse chesang.

 

 

 

 

 

 

 

6.1 Melao e akaretsang

• Sebelisa asesebelisoa sa mohala (hot stick kapa shotgun stick)bakeng sa lisebelisoa tse etselitsoeng ts'ebetso e joalo. Le ka mohla u se ke ua sebetsa ka letsoho.
• Kamehla fokotsa matla 'me u thehe fatše pele u sebelisa sesebelisoa leha e le sefe kapa u fetola li-fuse.

 

 

6.3 Li-switch tsa motlakase tse ngata

• Hape ts'ebetso e se nang matla feela.
• Boemo ba feme hangata ke boemo bo phahameng ka ho fetisisa ba motlakase.
• Haeba lipompo ka bobeli le li-multiple-voltage windings li le teng, etsa bonnete ba hore toipi e boemong bo bontšitsoeng ho nameplate ha sesebelisoa sa multiple-voltage se le sebakeng se bapileng.

 

 

6.5 Magnex interrupter

Sesebediswa sa ka hare sa oli se qoeletseng ho feta tekano le mocheso o feteletseng bakeng sa lehlakore la HV.

Ho sebetsa ka hot stick:

• Bula: fetosa motshwaro ho ya hodimo (ho fapana le wa tshupanako) ho ya ho BULA boemo.
• Koala: retelletsa setshwano se shebileng tlase (ho ya ka tshupanako) ka thata kgahlanong le setopong sebakeng se TLOLWENG.
• Seta bocha kamora leeto: pele ho BULA, ebe ho TLOA.

Tlamo ea maemo a tšohanyetso (EO) ka boikhethelo: sebakeng sa OPEN, fetola lever ea EO ho ea ho EO, ebe u koala.

Pontšo ea leeto la boikhethelo: lense ea lamunu e hlaha ha e khoptjoa.

 

6.6 Li-Fuse

Khokahano e fokolang ea fuse: e behiloe setsing sa HV bushing kapa switch; e sireletsa khahlanong le boima bo feteletseng le liphoso tsa ka hare.

Fuse e fokotsang mefuta e sa fellang: ka letoto le nang le sehokelo se fokolang; e fokotsa matla bakeng sa mathata a mangata a ka hare.

Phetoho:

• Hlalosa le ho lokisa sesosa sa ts'ebetso pele o kenya e 'ngoe.
• Sebelisa lintlha le litšobotsi tse tšoanang.
• Fokotsa matla, fatše, tanka e bulehileng (sheba Karolo ea 8.7) ho fihlella.

 

 

 

 

 

 

Sesebelisoa	Lesupa / tshebediso e tlwaelehileng	E sa tloaelehang/ Ketso
Khatello-vacuum gauge	E fapana ka mojaro le mocheso; positive, ha ho chesa, e ka ba mpe ha ho bata	Kamehla lefela → ho lutla ho ka bang teng, batlisisa
Tekanyo ea boemo ba oli	Ka likhato tse 25, pointer pakeng tsa "H" le "L"; e nyoloha ka mocheso	Ka tlase ho "L" → eketsa mokelikeli 'me u hlahlobe ho lutla
Thermometer ea oli	Mocheso o phahameng oa oli hangata o ka tlase ho kapa o lekana le likhato tse 85; khubelu hula letsoho direkoto max	>95℃→ hlahloba mojaro, pholiso, boemo ba mokelikeli
Sesebediswa sa ho hula / sampole	Hlakola kapa u nke lisampole ka tlase ho tanka	E dutlang → nka sebaka sa gasket kapa valve
Valve ea ho imolla khatello ea maikutlo (PRV)	E bula ha khatello ea ka hare e feta tekanyo e behiloeng, ebe e tsosolosa	Ka mor'a ts'ebetso, batlisisa sesosa
Internal Fault Detector (IFD)	E hlahisa folakha e sa khoneng ho hlophisoa bocha ha ho hlaha phoso ea ka hare ea arcing	Folakha ea Orange e bonahala → transformer e na le phoso,se fe matla

Tlhokomeliso ea IFD: IFD ke sesupo sa pono feela, eseng ho khaoha ha motlakase. Esita le haeba IFD e sa sebetse, transformer e ntse e ka ba le phoso. Le ka mohla u se ke ua itšetleha ka eona e le sesebelisoa sa tšireletso se timang matla.

 

 

 

 

 

 

 

 

 

8.1 Linako tse khothaletsoang tsa tlhokomelo

Karohano	Ketsahalo
Khoeli le khoeli (mosebetsi o boima kapa tikoloho e thata)	Tlhahlobo ea ho lutla ha pono, boemo ba oli, molumo o sa tloaelehang, IR thermography
Likhoeli tse ling le tse ling tse 6	Tlhahlobo ea pente, tiisa liboutu, li-radiator tse hloekileng
Selemo le selemo	Sampling ea oli (matla a dielectric, litaba tsa metsi, acidity, DGA)
Lilemo tse ling le tse ling tse 3	Khanyetso ea insulation, tlhahlobo ea karolelano, tlhahlobo ea matla
Ka mora phoso kapa ntho e sa tloaelehang	Tlhahlobo ea oli e potlakileng le liteko tsa motlakase

 

8.2 Qetello ea ho penta ka ntle

Haeba primer kapa tšepe e se nang letho e pepesitsoe, lokisa hang-hang ho thibela kutu:

• Hlahisa sebaka seo ho tlosa mafome le pente e hlephileng.
• Hloekisa ka solvent (tlosa oli, grease).
• Sebelisa sebolaea-mafome sa pele.
• Tšela lijase tse peli tse kaholimo (sebelisa pente ea moetsi haeba e le teng).

 

8.3 Ho lokisoa ha metsi a lutlang

Netefatso e dutseng:

• Hloekisa sebaka se belaetsang, sebelisa talc kapa mokelikeli o lemohang ho lutla.
• Tobetsa tanka e nang le moea o omileng kapa naetrojene ho 3-4 PSIG, ema lihora tse 1-2, hlahloba.

Mekhoa ea ho lokisa:

• Ho lutla ha sekoti kapa seketsoana sa weld holim'a tanka: fokotsa matla, drain, weld (welder ea tšoanelehang).
• Radiator leak: u se ke ua cheselletsa (lisebelisoa tse tšesaane); fetola kapa sebelisa lisebelisoa tsa ho lokisa epoxy.
• Leak: leka ho tiisa liboutu tsa li-clamp (torque Letlapa la 2); haeba e hloleha, nka sebaka sa gasket.
• Ho dutla ha valve kapa gauge: nka sebaka sa gasket kapa karolo e felletseng.

 

8.4 Tlhokomelo ea mokelikeli o thibelang metsi

Mokhoa oa ho etsa mohlala:

• Ho fokotsa matla le ho theoha.
• Hlakola valve ea drain ka oli e nyane.
• Nka sampole ka sejaneng se hloekileng, se omeletseng, qoba khanya ea letsatsi.
• Tiisa hang-hang 'me u romele bakeng sa tlhahlobo.

Mekhoa e tloaelehileng ea ho amohela (oli ea liminerale):

Paramethara	Boleng bo amohelehang
Matla a dielectric	E kholo ho feta kapa e lekana le 26 kV
Likahare tsa metsi	Ka tlase ho kapa ho lekana le 35 ppm
Asiti	Ka tlase ho kapa ho lekana le 0.1 mg KOH/g
Ntho ea matla @25 degree	Ka tlase kapa ho lekana le 0.5%

Sefa:

• Sebelisa mochini oa ho hatisa ho fihlela matla a dielectric A maholo ho feta kapa a lekana le 26 kV.
• U se ke ua kopanya mefuta ea mokelikeli; mochini o hloekisang o tlameha ho se be le litšila tse tsoang marong a mang.

Ho tlatsa hape:

• Sebelisa mofuta o tšoanang hantle le mofuta oa mokelikeli.
• Pompa butle ho tloha tlase ho tanka ho qoba lipululana tsa moea.
• Tlatsa moleng o tšoailoeng ka har'a tanka, ebe u lumella lihora tse 24 hore moea o tsoe pele o matlafatsa.

 

8.5 Liteko tsa motlakase (nako le nako kapa tsa tlhahlobo)

Teko	Mokhoa	Kamohelo
Ho hanyetsa mocheso	1000 V kapa 2500 V megger	E kholo ho feta kapa e lekana le 1 GΩ (e omileng)
Karolelano (TTR)	Mohlahlobi oa TTR	±0.5%
Insulation power factor	2.5 kV kapa 10 kV borokho	Ka tlase ho kapa ho lekana le 0.5% @20 degree
Winding DC khanyetso	Microohmmeter	Ho kheloha Ka tlase ho kapa ho lekana le 2% lipakeng tsa mekhahlelo

 

8.6 Litataiso tsa torque

Letlapa la 1 - Li-fasteners tsa ka ntle

Mofuta oa fastener	Torque ka lebitso (ka-lbs)	Sebaka sa torque (ka-lbs)
3/8 ″ bolt	240	220‑260
Bolt ea sekoahelo sa letsoho	144	129‑158
Koahela band bolt	180	170‑185
surge arrester mounting bolt	420	372‑468

Letlapa la 2 - Hardware ea ka ntle ea bushing mounting

Mofuta oa Bushing	Torque ka lebitso (ka-lbs)	Sebaka sa torque
LV e entsoeng ka Tri‑Clamp (ha e na selikalikoe), 3/8″ stud	60	40‑80
LV e bōpiloeng (e nang le lesale la clamp), 3/8 ″ stud	120	90‑150
LV porcelain (e nang le selikalikoe sa clamp), 1/2 ″ stud	80	70‑90
Tri‑Clamp e entsoeng ka HV, 3/8 ″ stud	60	40‑80
HV e bōpiloeng (e nang le lesale la clamp), 3/8 ″ stud	120	90‑150
HV porcelain	80	70‑90

Lethathamo la 3 - Lihokelo tsa li-terminal tsa kantle

Mofuta oa terminal	Torque ka lebitso (ka-lbs)	Sebaka sa torque
HV porcelain bushing eye-bolt	210	180‑240
HV porcelain bushing end cap	168	156‑180
LV bushing 5/8 ″ jeme nut	600	480‑720
LV bushing 1″ jeme nut	600	480‑720
LV bushing 1‑1/4″ jeme nut	720	600‑840
Molato oa ho ts'oara kantle	180	162‑198
Motlatsi oa ka ntle oa pele oa fatše	180	162‑198

Letlapa la 4 - Lisebelisoa

Karolo	Torque ka lebitso (ka-lbs)	Sebaka sa torque
Liboutu tsa lihokelo tse fokolang tse kentsoeng ka Bushing	85	80‑90
Polaka ea pono ea boemo ba mokelikeli	960	900‑1020
Tlatsa polaka	960	900‑1020
Hlakola polaka	960	900‑1020
Valofo ea ho ntša metsi	600	480‑720
PRV 1/4″ NPT	180	160‑200
PRV 1/2″ NPT	360	324‑396
Neutral strap fastener (setulong sa fatše)	160	140‑180
Tlanya nate e ntseng e hola	120	96‑144

Ka lebaka la khatholoho ea gasket, torque e lekantsoeng e ka ba tlase ho feta ka lebitso. Se ke oa itlama ho feta tekano - kotsi ea ho peperana kapa ho hatella ho feta tekano.

 

8.7 Ho bula tanka ea transformer

Feela ha ho hlokahala ka ho feletseng(mohlala, ho fetola fuse ka hare, ho lokisoa bocha ha LV, ho lokisa switch ka hare).

Mokhoa:

• Fokotsa matla, fatše, imolla khatello (sebetsa PRV ka thupa e chesang - hlokomela mokelikeli o chesang).
• Hloekisa sebaka se pota-potileng sekoahelo kapa mokoti ho thibela litšila ho kena.
• Tlosa liboutu, phahamisa sekoaelo ka hloko (sireletsa gasket).
• Haeba mokelikeli o tlameha ho theoleloa, pompa ka lijaneng tse hloekileng, tse omeletseng (o se ke oa theola mokelikeli ka tlas'a core/coil clamp pan - li-coil li tlameha ho lula li koahetsoe).
• Nakong ea mosebetsi: sebelisa likoahelo tse hloekileng, tse se nang letlapa; tlama lisebelisoa ka likhoele tsa polokeho ho thibela ho oela ka tanka.
• Se ke oa tlohela tanka e butsoe nako e fetang lihora tse peli.Haeba e sitisoa, koala hape 'me u tlatse ka moea o omileng kapa naetrojene.
• Pele o kenya sekoaelo hape, tlosa gasket e senyehileng. Tiisa liboutu ho torque ea Tafole ea 1.
• Tlatsa butle butle, lumella lihora tse 24 ho lula, ebe u etsa tlhahlobo ea ho hanyetsa insulation pele u matlafatsa.

 

 

 

 

 

 

 

Letšoao	Seo e ka bang sesosa	Ketso
Matla a bobeli a fosahetse	Boemo ba ho theipi bo fosahetseng, khokahanyo e fosahetseng ea HV, fuse e fefotsoeng	Fokotsa matla, hlahloba switjha ea pompo, wiring, fetola fuse
Ho chesa haholo	Ho jara, li-radiator tse koetsoeng, boemo bo tlase ba oli, phoso ea kahare	Fokotsa mojaro, hloekisa li-radiator, eketsa oli, mohlala oa oli
PRV e sebetsa	Arc e ka hare, boima bo feteletseng, tlhahiso ea khase	Fokotsa matla, hlahloba IFD, etsa DGA - u se ke ua tsosolosa matla ka bofofu
folakha ea lamunu ea IFD e bonahala	Phoso ea ka hare ea arcing	Transformer e na le phoso - fetola unit
Ho hanyetsa ho fokotseha ho fokolang	Mongobo oa oli, lihlahla tse litšila, li-insulation tsa khale	Hloekisa lihlahla, sefa kapa u nke sebaka sa oli, omella
Lerata le sa tloaelehang (eseng hum e tloaelehileng)	Motheo o hlephileng, motsamao o tsoelipanang, ho tsosoa ho feteletseng	Fokotsa matla, karo-karolelano ea tlhahlobo le hona joale ha ho na moroalo
Boemo ba oli bo theoha butle-butle	Dutla	Fumana 'me u lokise ho lutla, tlatsa holimo
Khatello-vacuum gauge e lula e le zero	Tanka Tiiso e lahlehile	Teko ea dutla, lokisa, ebe o tsoa le ho tlatsa hape

 

 

 

 

 

 

 

 

 

Li-transformer tse kentsoeng ka lipalo li sebeletsa melapo ea kabo e holimo, empa lits'ebetso tse ngata tsa matla li hloka mekhoa e meng ea ho hola kapa mefuta e koetsoeng. Bakeng sa sete e felletseng ea ts'ebetso le ts'ebetso ea li-transformer, bona litataiso tse ling tse latelang.

• Tataiso ea Ts'ebetso ea Transformer ea Substation
• Tataiso ea Ts'ebetso ea Transformer ea Matla le Ts'ebetso
• Pad Mounted Transformer Installation le Tataiso ea Ts'ebetso
• Mofuta o omileng oa ho kenya Transformer le Tataiso ea Ts'ebetso
• Tataiso ea Ts'ebetso ea Compact Substation le Tataiso ea Ts'ebetso

 

 

 

 

 

 

 

10.1 Ho odara likarolo tse ling

Fana kanomoro ea serial ea transformer(ho nameplate), tlhaloso ea karolo, le bongata.

Ikopanye le thekiso ea moetsi kapa tšebeletso ea tekheniki.

 

10.2 Tiisetso

Tsebisa moetsi hang-hang haeba mathata a hlaha nakong ea waranti.

Litokiso tsohle tsa tiisetso li tlameha ho amoheloa kapa ho etsoa ke moetsi.

 

10.3 Ho lahla

Hlatsoa mokelikeli oohle o sireletsang pele o hlakola transformer.

Lahla lero ho latelamelaoana ea tikoloho ea lehae(o seke oa tšolla).

Tanka ea tšepe, mapheo a mantlha le a koporo a ka sebelisoa hape.

Mokelikeli o tsoang ho li-transformer tsa khale (pele ho 1970s) e kanna ea ba le li-PCB - tšoara joalo ka litšila tse kotsi.