Bokisi ya tulansifooma eya kiragala eriko paadi mu luggya ng’ewuuma, amafuta g’eby’obuggagga bw’omu ttaka agakulukuta, oba okubwatuka: step potential ne 7,200 V primary arc clearance¶

Okuwulira eddoboozi ery’omwanguka, eritali lya bulijjo 120-hertz ekyuma ekiwuuma oba okukuba ng’amasasi okuva mu bbokisi y’ebyuma eya kiragala eya square (pad-mounted distribution transformer) okutuula mu luggya lwo olw’omu maaso, ng’owunya ebyuma ebiziyiza amasannyalaze agookeddwa oba amafuta g’eby’obuggagga eby’omu ttaka agalimu ekibiriiti, oba okulaba omuddo ogwa kitaka ogwayokebwa n’amafuta amaddugavu nga gakulukuta okuva wansi wa kabineti, mbeera ya mangu ey’amasannyalaze aga vvulovumenti enkulu eyinza okutta omuntu. Mu bitundu by’amayumba ebitaliiko bikondo bya bikozesebwa waggulu, amasannyalaze gayisa waya za primary feeder wansi w’ettaka ezitwala ** .7,200 volts okutuuka ku 19,920 volts (7.2 kV okutuuka ku 19.9 kV phase-to-ground, oba okutuuka ku 34,500 volts phase-to-phase)** butereevu wansi mu kabineti ezo ez’ekyuma ekiddugavu okulinnyisa vvulovumenti wansi okutuuka 120/240-volt amaanyi g’awaka. Wadde nga hood y’ekyuma eya kiragala ey’ebweru eringa bbokisi y’ekyuma ennyangu, ekitundu eky’emabega ttanka ya kyuma eriko puleesa ejjudde 150 to 500 liters (40 to 130 gallons) ya mafuta g’eby’obuggagga eby’omu ttaka agayokya, era mu kisenge ky’omu maaso mulimu ebikoona ebimenya omugugu ebisookerwako ebitaliiko vvulovumenti eya waggulu n’ekyuma ekigoba bayonet expulsion fuse eky’omunda.

Bwe wabaawo okuziyiza okuzingulula okw’omunda okulemererwa, ebikoola by’emiti oba okusenga ku ttaka kwatika ekisaka ekiri wansi w’ettaka, oba waya y’ettaka eritaliiko kikulu ekwatagana n’egenda, a 7,200-volt arc ey’omunda efuumuula amafuta ag’eby’obuggagga eby’omu ttaka agagyetoolodde ne gafuuka ekiwujjo ekibwatuka ekya hayidirojeni (H2), aseetilen ( ) .C2H2), ekirungo kya methane ( .CH4), ne ggaasi wa ethylene mu milisekondi. Singa fiyuzi ya bayonet ey’omunda oba vvaalu ekendeeza puleesa tesobola kufulumya puleesa mangu ekimala, ttanka y’ekyuma ekutuka oba n’efuuwa enzigi zaayo eziriko hingi ne zigguka mu kifo ekiziba amaaso 19,000-degree-Celsius (35,000-degree-Fahrenheit) arc-flash fireball nga bwe giwa amaanyi mu ttaka eryetoolodde n’ekisusunku kya kabineti y’ekyuma ku vvulovumenti ezitta. Singa tulansifooma esimbye ku paadi efuuwa omukka, ng’ekola arcing, efuumuuka, ekulukuta woyiro oba ng’etudde ng’oluggi lwayo luggule, kuba ku nnamba y’amangu mu kitundu kyo (911 mu Amerika ne Canada, . 112 okwetoloola omukago gwa Bulaaya, . 999 mu Bungereza; laba ennamba z’amangu) n’emmeeza y’ekitongole kyo eky’amasannyalaze eky’okusindika abantu mu mbeera ez’amangu 24/7 amangu ddala. Ebizibu ebikwatagana n’amasannyalaze n’ebikozesebwa, laba okubwatuka kwa bbokisi ya tulansifooma eya kiragala essiddwa ku paadi, omuliro gwa woyiro, n’obulabe bwa kabineti enzigule, . vvulovumenti etaayaaya ku amataala g’oku nguudo ag’ebyuma, ebibikka ebinnya by’oku mabbali g’ekkubo, n’okukankana kw’embwa, era downed telecommunications fiber oba coax cable vs. okugwa kw’amasannyalaze ag’okubiri agalina amaanyi okuyita mu kuzuula ekkubo eriyingira mu mmotoka.

Kino kikole kati¶

1. Okuteekawo enzirukanya y’okuggyibwako amangu waakiri 10 to 15 meters (35 to 50 feet) okwetoloola bbokisi ya tulansifooma eya kiragala, era ogaziye okutuuka ku 30 meters (100 feet) bwe kiba nga kifuuwa sigala, kiwuuma, oba kibuguma. Totambulangako ku bbokisi ya tulansifooma ewuuma, efuuwa sigala oba amafuta okugikebera, tokwata ku kabineti y’ekyuma, era tokkiriza baana oba bisolo by’omu nnyumba okumpi ne paadi ya seminti. Bw’oba oyimiridde dda munda 10 meters (35 feet) ya tulansifooma etandika okuwuuma, okuwuluguma, oba okumasamasa, todduka na mitendera miwanvu: shuffle oba hop backward nga okuuma ebigere byombi nga binywevu wamu so a 7,200-volt ground-fault voltage gradient (step potential) tesobola kukulukuta waggulu ku kigere ekimu ne wansi ku kirala.
2. Embwa zikuume ku miguwa emimpi nga ziri wala nnyo okuva ku kabineti era toleka mbwa kufuka oba okuwunyiriza bbokisi ya tulansifooma eya kiragala eriko enfuufu. Embwa zirina ebiwaawaatiro bina ebitaliiko bbugumu ebikwatagana butereevu n’omuddo omunnyogovu n’ennyindo ennyogovu ekwata ku nsonda z’ebyuma. Embwa bw’efuyira ku kisenge ekya wansi ekifuuse enfuufu ekya tulansifooma ng’omusipi gwayo ogw’omunda ogw’ettaka oba enkokola enkulu efudde, oba ku ttaka eririmu amaanyi, . 120 to 7,200 volts atambula mu mugga gw’omusulo oba okuyita mu gw’embwa 0.6-meter (2-foot) paw span okuva mu maaso okudda emabega, ekivaako ventricular fibrillation amangu.
3. Kozesa binoculars oba ssimu yo camera zoom okuva 15+ meters (50+ feet) ewala okusoma Utility Stencil Number eya digito 6 ku 10 eri mu maaso g’ekibokisi. Buli tulansifooma essiddwa ku paadi eya kiragala erina ennamba y’endagamuntu eriko stencil eya kyenvu, enjeru oba enjeru (nga kwogasse ne bbaakoodi tag ne a kVA sitiika nga 25, . 50, . 75, oba 100) ku hood y’omu maaso oba ku side panel. Okusoma ennamba eyo entuufu eya stencil eri utility dispatcher kisobozesa enkola yaabwe ey’okuddukanya okuvaako (OMS) okuzuula olukoba olusookerwako oluli wansi w’ettaka, kabineti y’okukyusakyusa waggulu w’omugga esinga okumpi, n’omwaka gw’okukola (PCB vs. Non-PCB mineral oil) nga abakozi ba layini tebannatuuka.
4. Togezaako kusika kuggalawo luggi lwa tulansifooma olutaliiko kkufulu oba oluggule, era tofuuyira mazzi oba ekyuma ekizikiza omuliro mu maka ku bbokisi. Singa okwambala kw’okulabirira ekifo, okwonoona, oba okuwuuma kwa puleesa munda kulese hood y’ekyuma eya kiragala nga nzigule, sigala emabega waakiri 10 to 15 meters (35 to 50 feet). Munda mu kabineti, ebikoona ebisookerwako ebya kapiira ebya vvulovumenti enkulu (7,200 to 19,920 V) ne busbars ez’okubiri ez’ekikomo ekitaliiko kintu kyonna ( .120/240 V ku 2,000+ amps of available fault current) tuula sentimita okuva ku mimwa gy’oluggi. Tokozesangako hoosi ya lusuku oba ey’awaka ekwatibwa mu ngalo ABC ekyuma ekizikiza omuliro (ekipimiddwa ku byuma eby’omunda byokka wansi wa 1,000 volts).
5. Kebera amaka go oba temuli "Open Neutral" voltage swings era oggale Main Breaker yo singa amataala gaba gaaka mu nsiko oba nga gakyuka nga gaaka. Transformer eri wansi w'ettaka bw'ebuguma oba neutral connection yaayo n'eyaka munda mu kabineti eya green, amaka go abiri 120-volt amagulu gafuuka agatali ga bbalansi (okusindika 180 to 210 volts mu kitundu kya outlets zo ate ekitundu ekirala okisuula ku 40 volts). Singa ekipande kyo eky’okumenya eky’omunda kiba kiyonjo, kikalu, era nga kisirise, yimirira ku mabbali okyuse Main Service Breaker ku OFF okuziyiza surge strips ne appliance boards okukwata omuliro. (Singa ekipande kyo eky’omunda kyennyini kiwuuma nnyo, kifuuwa sigala, oba nga kyokya, tokwata ku kipande: fulumya ennyumba mu bwangu.)
6. Leeta ab’omu maka n’ebisolo by’omu nnyumba mu nnyumba, ggalawo amadirisa gonna, era ggalawo emikutu gy’empewo egya HVAC egy’omu makkati singa tulansifooma efulumya omukka oba amafuta agakulukuta. Okwokya oba okufuumuuka amafuta ga dielectric mineral oil gafulumya dense polycyclic aromatic hydrocarbons (PAHs), aldehydes ezitali nnungi, kaboni monokisayidi, n’enfuufu; mu legacy units ezisalasala nga tezinnabaawo 1979 EPA okuwera, okwokya polychlorinated biphenyls (PCBs) zikola obutwa dibenzofurans ezirimu chlorinated ( .PCDFs) ne dayokisini.

Omuti gw’okusalawo: pad-mounted green transformer triage ey’amangu¶

flowchart TD
    A["Obutabeera bwa bulijjo ku bbokisi ya tulansifooma essiddwaako paadi eya kiragala ku muliraano"] --> B{"Bubonero ki bw’olaba ng’oli wala?"}
    B -->|"1. Okuwuuma okw’amaanyi okwa 120-Hz, okuwuuma, omukka, omuliro, oba ekibikka ekibumbulukuka/okubuuka"| C["Senguka mu mmita 15 ku 30 (fuuti 50 ku 100) amangu ddala"]
    B -->|"2. Amazzi ag’amafuta agakulukuta ku paadi ya seminti, omuddo ogwokya, oba okuwunya okuvunda/okwokya"| D["Sigala mita 10 ku 15 (fuuti 35 ku 50) emabega; kuuma ebisolo by’omu nnyumba n’abaana munda"]
    B -->|"3. Omulyango gwa kabineti guggule, kkufulu ebuze, oba penta-bolt ey’ensonga 5 esumuluddwa"| E["TOKOTA ku luggi oba okuggalawo; guard perimeter okuva ku 10+ mita okuva"]
    C --> F{"Obadde dda munda mu kitundu ky’ensobi ku ttaka ekya mmita 10 (fuuti 35)?"}
    F -->|"Yee"| G["Tabula oba hop emabega ng’ebigere byombi bikwataganye okwewala Step Potential"]
    F -->|"Nedda"| H["Kuba ku 911 Fire Dispatch NE Electric Utility Emergency Line"]
    G --> H
    D --> H
    E --> H
    H --> I["Kozesa binoculars oba zoom y’essimu okuva ku mita 15+ okusoma Stencil Number ya digito 6 okutuuka ku 10"]
    I --> J{"Amataala g’ennyumba gaakaayakana nnyo, gaaka nnyo oba gawunya ng’obuveera obwokeddwa?"}
    J -->|"Yee: Open Neutral oba primary-to-secondary fault"| K["Singa bbokisi y’okumenya mu nnyumba esirise/enyogovu, kyusa Main Breaker OFF; singa panel ewuuma, semuka ennyumba"]
    J -->|"Nedda"| L["Ggalawo amadirisa, ggalawo HVAC intake, era olinde Utility Hot-Stick Lineman"]
    K --> L
    L --> M["Demand Utility HazMat contractor okuyonja amafuta gonna agayidde n’okugezesa ettaka okulaba oba temuli PCBs"]

Anatomy ya transformer eya green pad-mounted: kiki ekiri munda mu kabineti¶

Okutegeera ekituula emabega wa hood ya sheet-metal hood ya single-phase residential pad-mounted transformer kinnyonnyola lwaki utility linemen bambala 40 cal/cm2 amasuuti aga arc-flash era okozese ** .2.4-meter (8-foot) fiberglass "shotgun" hot-stick** okuggulawo oluggi lwokka:

+-----------------------------------------------------------------------------+
|        SINGLE-PHASE RESIDENTIAL PAD-MOUNTED TRANSFORMER (TOP/FRONT VIEW)    |
+-----------------------------------------------------------------------------+
|                                                                             |
|   +---------------------------------------------------------------------+   |
|   |                   REAR SEALED STEEL OIL TANK                        |   |
|   |  - Contains 150 to 500 L (40 to 130 gal) Dielectric Mineral Oil     |   |
|   |  - Houses High-Voltage Core & Copper/Aluminum Windings              |   |
|   |  - Internal Oil Temp under Peak Load: 65 C to 105 C (150 to 220 F)  |   |
|   |  - Dissolved Combustible Gases during Fault: H2, C2H2 (Acetylene)   |   |
|   +---------------------------------------------------------------------+   |
|   |              STEEL TANK WALL / BUSHING PARTITION PLATE              |   |
|   +----------------------------------+----------------------------------+   |
|   |  LEFT SIDE: HIGH-VOLTAGE (HV)    |  RIGHT SIDE: LOW-VOLTAGE (LV)    |   |
|   |  PRIMARY COMPARTMENT             |  SECONDARY COMPARTMENT           |   |
|   |  * Voltage: 7,200 V to 19,920 V  |  * Voltage: 120 / 240 Volts      |   |
|   |  * H1A & H1B Load-Break Elbows   |  * X1, X2, X3 Threaded Studs     |   |
|   |    (Loop-Feed In & Out to next   |    feeding 4 to 12 houses        |   |
|   |    transformers down the street) |  * Uninsulated bare metal spades |   |
|   |  * Bayonet Oil-Expulsion Fuse    |    with 2,000+ Amps fault current|   |
|   |  * Pressure Relief Valve (PRV)   |  * Concentric Neutral Ground Bar |   |
|   +----------------------------------+----------------------------------+   |
|              ^                       |                       ^              |
|     [Hinged Steel Hood]    [5-Point Penta-Head Bolt    [Utility Padlock]    |
|                             + Recessed Security Latch]                      |
+-----------------------------------------------------------------------------+

Lwaki tulansifooma eziteekebwa ku paadi ziteekebwa waya mu "Open-Loop Primary" (H1A era H1B) .¶

Okwawukanako ne tulansifooma y’ebikondo waggulu ekuba waya emu waggulu, kumpi buli tulansifooma essiddwa ku paadi eya kiragala ey’okusulamu eba kitundu kya underground loop-feed circuit: - OMU 7,200-volt (oba 13,800 V / . 19,920 V) wansi w’ettaka primary cable eyingira wansi ku kkono w’ekibokisi okuva ku tulansifooma ya muliraanwa ow’oku mugga (Bushing H1A), enyweza tulansifooma yo, era n’efuluma ng’eyita mu nkokola eyokubiri eya vvulovumenti eya waggulu (Bushing H1B) okuliisa tulansifooma 5 ku 20 eziddako wansi mu kkubo. - Kino kye kitegeeza mu mbeera ey'amangu: Ne bwe kiba nti Bayonet Expulsion Fuse ya tulansifooma yo ey'omunda efuuwa n'ekuba amasannyalaze mu nnyumba yo ne baliraanwa bo ab'okumpi, the... 7,200-to-19,920-volt waya za loopu ezisookerwako (H1A era H1B) munda wansi mu bbokisi yo eya kiragala sigala nga LIVE 100 ku buli 100 era ng’olina amaanyi okutuusa ng’omuntu alina obuzibu mu by’amasannyalaze azudde kabineti y’okukyusakyusa waggulu oba ekikondo kya riser enguudo eziwerako n’asika fiyuzi ezisookerwako. Tokitwala nti bbokisi ya tulansifooma eya kiragala "efudde" olw'okuba ennyumba zonna eziri ku luguudo lwo zifiiriddwa amasannyalaze.

Emmeeza y’okuzuula obulwadde: buli ddoboozi, okuwunya oba akabonero akalabika kye kitegeeza¶

Step Potential and Touch Potential: lwaki omuddo ogwetoolodde ekibokisi ekya kiragala ekikyamu guyinza okukutta¶

Nga kondakita wa pulayimale eya vvulovumenti eya waggulu (7,200 V okutuuka ku 19,920 V) ensobi ku kkeesi ya tulansifooma y’ekyuma oba mu ttaka, era waya y’okudda emabega ey’ekikomo concentric neutral wansi w’ettaka ekulukuta oba emenyese, ettaka okwetooloola paadi ya seminti likola nga resistor y’amasannyalaze ennene. Voltage efuluma ebweru okuyita mu ttaka mu mpeta ezikwatagana, n’egwa okuva ku nkumi za vvuloti ku paadi ya seminti okutuuka ku ziro volts ku 10 to 15 meters (35 to 50 feet):

                    [ FAULTING GREEN TRANSFORMER BOX ]
                         (Cabinet & Pad at 7,200 V)
                                     |
          +--------------------------+--------------------------+
          |      Ring 1 (0.5 m / 2 ft):  ~5,500 Volts           |
          |   +---------------------------------------------+   |
          |   |    Ring 2 (1.5 m / 5 ft):  ~3,200 Volts     |   |
          |   |  +---------------------------------------+  |   |
          |   |  |   Ring 3 (3.0 m / 10 ft): ~1,400 Volts|  |   |
          |   |  |  +---------------------------------+  |  |   |
          |   |  |  |  Ring 4 (10 m / 35 ft): ~0 Volts|  |  |   |

1. Lwaki Okutambula Okutambula okwabulijjo Kifa (Step Potential):
2. Singa otambula ng’oyolekera oba okuva ku tulansifooma eriko arcing oba ground-faulted ng’otwala normal 0.8-meter (2.5-foot) stride, ekigere kyo eky’emabega kiyinza okuba nga kiyimiridde ku ttaka ku 1,400 volts ate ekigere kyo eky’omu maaso kilinnya ku ttaka ku 3,200 volts. Nti ** .1,800-volt enjawulo (Step Potential)** evuga amasannyalaze agatta butereevu waggulu ku kigere ekimu, okuyita mu kifuba kyo, n’okukka ku kigere ekirala.
3. Lwaki Embwa ez’amagulu ana zifa amangu ddala ku vvulovumenti eya wansi ennyo: Embwa etambula okuyita mu muddo omunnyogovu okumpi ne tulansifooma efuuse ekizibu 0.5 to 0.9 meters (1.5 to 3 feet) wakati w’ebigere byayo eby’omu maaso n’eby’emabega, erina paadi z’ebiwaawaatiro ennyogovu eziziyiza obutono, era erina omutima gwayo butereevu mu kkubo lya kasasiro ogw’okwebungulula wakati w’amagulu g’omu maaso n’amagulu ag’emabega.
4. Engeri y'okutoloka mu Zooni nga tolina bulabe (The Shuffle / Two-Foot Hop):
5. Bw’owulira okuwuuma mu bigere oba amagulu okumpi ne utility box eya kiragala, oba singa tulansifooma etandika okuwuuma, okuwuluguma, oba okufuuwa sigala ng’oli kumpi, freeze, nyweza ebigere byombi bulungi wamu side-by-side, era otabule emabega ekisinziiro ky’ekigere ekimu ne kitayita ku kigere kya kirala (okukuuma ebigere byombi nga bikwatagana ekiseera kyonna), oba hop backward ng’ebigere byombi biwanvuye simultaneously okutuusa nga waakiri 15 meters (50 feet) ewala. Tokwatangako ku kabineti ya tulansifooma oba olukomera lw’ekyuma oluli okumpi ng’otabulatabula (Touch Potential).

Engeri y'okuloopa Stencil Number entuufu ne Cabinet Type eri Utility Dispatcher¶

Bw’oyita ku layini y’ekitongole kyo eky’amasannyalaze ey’amangu 24/7, soma obubonero obuli ebweru wa kabineti okuva 15+ meters (50+ feet) ewala ng’okozesa binoculars oba zoom lens y’essimu yo:

1. The 6-to-10-Digit Stencil / Pad Number: Noonya ennamba/ennukuta eziriko stenciled eza kyenvu, enjeru, oba enjeru okubuna hood eya waggulu mu maaso (nga T-482910, . PAD 8492-A, oba G-19402-3), ezikola maapu butereevu ku coordinates za GIS grid z’ekitongole.
2. Aba... kVA Sitiika y’obusobozi: Ebiseera ebisinga nnamba ya square eya kyenvu-n’omuddugavu oba enjeru-n’omuddugavu (25, . 37.5, . 50, . 75, . 100, oba 167) ekiraga ekipimo kya kilovolt-ampere.
3. Stiika ya "NON-PCB" Blue/Green (oba Obutabeerawo):
4. Transformers ezikoleddwa oluvannyuma lwa... 1980 ebiseera ebisinga okulaga akakwate akatono ka bbululu, kiragala, oba enjeru "NON-PCB" decal mu maaso oba ku ludda.
5. Singa tulansifooma enkadde, eya kiragala omuddugavu oba eyakazibwako erya rusted eba ne nedda NON-PCB decal (oba etudde mu subdivision nga 1980 tannatuuka), gamba Fire Department and Utility Dispatcher: "Kabineti terina sitiika erabika Non-PCB era ekulukuta amafuta; nsaba otwale amazzi agayidde ng'amazzi agayinza okuba ag'edda agalimu PCB."
6. Engeri Ekizibiti ky'Ebyokwerinda eky'Emitendera Ebbiri (Two-Stage Utility Security Lock) gy'ekola (Penta-Bolt + Padlock):
7. Wansi wa IEEE C57.12.28 / . NEMA omutindo gw’enclosure, oluggi lwa tulansifooma oluteekeddwa ku paadi eya kiragala terusobola kunyweza kkufulu ya kikomo yokka. Wansi wa padlock hasp watuula recessed 5-sided (pentagonal) ekisumuluzo eky’obukuumi obw’amaanyi ( .Penta-Bolt) nga kyetaagisa ekisumuluzo kya utility penta-socket okukyuka nga omuguwa gwa padlock tegunnakwatagana. Singa padlock ewaniridde ku hasp enzigule oba ekituli kirabika ku mabbali g’empenda eya wansi eya hood, penta-bolt ey’omunda teyali etudde, loopa Unsecured Dead-Front Cabinet amangu ddala.

Dielectric Mineral Oil vs. Legacy PCB Spills: Amateeka agafuga okuyonja bannannyini maka (40 CFR Part 761) .¶

Tulansifooma esimbye ku paadi bw’ekulukuta oba okukutuka, . 50 to 400 liters (13 to 105 gallons) ya woyiro omutangaavu, eya amber, oba omuddugavu asobola okunnyika mu muddo gwo ogw’omu maaso, okusiiga ekkubo lyo n’emmotoka, oba okunaaba ng’eyolekera omudumu gw’omuyaga.

• Tokwatangako, tosiimuula, oba hoosi wansi woyiro ya tulansifooma ggwe kennyini: Okufuuyira hoosi y’olusuku oba pressure washer ku mafuta ga tulansifooma akulukuta kifuula woyiro emulsifies ne kivuga petroleum hydrocarbons (n’omusika gwonna Polychlorinated Biphenyls / PCBs, . CAS 1336-36-3) mu buziba bw’ettaka ly’omuddo, emyala gy’omuyaga, n’amazzi agali wansi w’ettaka.
• Ekitongole ky’amasannyalaze Kitwala ebitundu 100% ku buvunaanyizibwa bw’amateeka n’ensimbi mu kuyonja: Mu mateeka ga gavumenti eya wakati agakwata ku butonde bw’ensi (US EPA 40 CFR Part 761 Subpart G Enkola y'okuyonja amazzi amayonjo aga PCB, Etteeka ly'amazzi amayonjo 40 CFR Part 112 SPCC Oil Spill Rules, n’amateeka g’eggwanga/amasaza/UK), ekitongole ky’amasannyalaze kirina tulansifooma esimbye ku paadi era kivunaanyizibwa nnyo ku kutwala sampuli z’ebintu byonna eby’obulabe, okusima ettaka, okukyusa paadi ya seminti, okulongoosa ekkubo eriyingira mu mmotoka/emmotoka, n’okuzzaawo omuddo ku $0 omuwendo eri nnannyini maka.
• Biki bye balina okusaba okuva eri omukwanaganya w'obutonde bw'ensi mu kitongole kino nga abakozi baabwe tebannasimbula:
• Saba nti omukozi w’ekitongole kino ekikola ku butonde bw’ensi asimwa ettaka lyonna eririmu amafuta n’omuddo wansi okutuuka ku ttaka eriyonjo (15 to 30 centimeters / . 6 to 12 inches okusukka embalabe erabika) n’ogisika mu ngoma za DOT hazmat ezisibiddwa;
• Saba Ekiwandiiko ekiwandiike ekya laboratory Certificate of Analysis (oba likoda y’erinnya ly’ekkolero ekakasiddwa) ng’ekakasa oba amazzi agaayidde galimu < 1 ppm PCBs (Amafuta g’eby’obuggagga eby’omu ttaka agatali ga PCB oba amazzi ga ester ow’obutonde), . 50 to 499 ppm PCBs (Ekifuuse ekivundu kya PCB), oba >= 500 ppm PCBs (ekyetaagisa EPA okusiimuula ettaka/okukakasa omusingi sampling wansi 40 CFR § 761.125); era
• Singa enfuufu ya woyiro efuuyira ku siding y’emmotoka yo oba ku nnyumba, ssaayo Utility Property Damage & Environmental Decontamination Claim mu bwangu nga tonnayoza mmotoka.

Ennamba z’embeera ez’amangu ez’ekitundu n’ebiragiro ebikwata ku bulabe bw’ebikozesebwa¶

• Amerika ne Canada:
• Okusindika mu bwangu: Kuba 911 amangu ddala ku bbokisi yonna eya tulansifooma eya kiragala efuuwa sigala, eyokya, efuumuuka, oba ebwatuka, oba singa oluggi lwa kabineti luggule nga lubikkula ebitundu eby’omunda.
• Electric Utility 24/7 Outage & Hazard Line: Kuba ennamba y'amangu ku ssente zo ez'amasannyalaze amangu ddala nga wayiseewo 911 era owe omusindika ennamba ya Stencil eya digito 6 ku 10.
• Locate wansi w'ettaka & Okuyiwa amafuta: Dial 811 mu ggwanga lyonna okwetoloola Amerika (call811.com) oba ** .ClickBeforeYouDig.com** mu Canada nga tonnasima. Loopa amafuta ga tulansifooma agayidde agatali mayonjo eri National Response Center (NRC) ku 1-800-424-8802 ne Eggwanga lyo DEP/ .EPA.
• Obwakabaka bwa Buganda:
• Emergency Dispatch & National Power Cut / Ennamba y'obulabe: Kuba 999 singa kabineti y’amasannyalaze eya kiragala ku mabbali g’ekkubo (link box, feeder pillar, oba package substation) ekutte omuliro oba ng’ebwatuka, era oyite 105 (eggwanga lya Bungereza ery'obwereere Amasannyalaze DNO Ennamba ey’amangu okwetoloola Bungereza, Scotland, ne Wales, oba 03457 643 643 kubanga NIE Networks mu Northern Ireland) okuloopa kabineti ewuuma, ekulukuta oba eggule wansi wa HSE ESQCR 2002.
• Omukago gwa Bulaaya:
• Okusindika mu bwangu: Kuba 112 mu mawanga gonna agali mu mukago gwa EU okuloopa ekifo kya tulansifooma ku mabbali g’enguudo ekyokya, ekiwuuma, oba ekiggule (poste de transformation HTA/BT mu Bufalansa, Kompakttrafostation mu Girimaani, centro de transformación mu Spain) n’okutegeeza DSO (Enedis / . e-distribuzione). Sigala waakiri 15 meters (50 feet) emabega.
• Australia ne New Zealand:
• Okusindika mu bwangu: Kuba 000 mu Australia oba 111 mu New Zealand olw’omuliro oba okubwatuka okutambula ku Padmount Substation / Pillar Box eya kiragala, era okubire omugabi w’amasannyalaze go (Ausgrid 13 13 88, . Endeavour Energy 131 003, . Energex 13 19 62, . Western Power 13 13 51, oba Vector mu NZ).
• Asia (Singapore, Japan, Hong Kong, ne Buyindi):
• Singapore: Kuba essimu 995 (SCDF) ne Ekifo kya SP Group ekiweereza amasannyalaze essaawa 24 ku... 1800-778-8888 ku nsobi ku bbokisi ezigabibwa waggulu w’ettaka (OGBs).
• Japan, Hong Kong, & Buyindi: Mu Japan, kuba 119 n’okukwatagana TEPCO/ .KEPCO. Mu Hong Kong, kuba 999 n'okutuukirira CLP Power (2728 8333) oba ** .HK Electric (2555 4999)**. Mu Buyindi, kuba 112 ne mu kitundu kyo DISCOM essimu y'obuyambi (1912).

Ebibuuzo ebitera okubuuzibwa¶

Lwaki bbokisi ya tulansifooma eya kiragala mu luggya lwange ewuuma mangu nnyo mu kiseera ky’ebbugumu ery’omusana oba ku ssaawa 6:00 ez’ekiro?¶

Tulansifooma eya bulijjo essiddwa ku paadi efulumya eddoboozi erisirifu era erinywevu 120-hertz hum ereetebwa magnetostriction y’omusingi gwayo ogw’ekyuma. Kyokka wakati wa... Ssaawa 4:00 ez’ekiro ne 9:00 ez’ekiro mu kiseera ky’ebbugumu ery’omu kyeya, oba nga baliraanwa abawerako baziyingiza mu kiseera kye kimu Omutendera 2 (40-ku-80 amp) . Emmotoka ey’amasannyalaze (EV) chargers era nga ziddukanya central air conditioners, emu 50 kVA tulansifooma y’oku muliraano esobola okunyigirizibwa okutuuka ebitundu 140 ku 180 ku buli 100 wa busobozi bwayo obugereddwa. Bwe zitikka ekisusse, ebbugumu ly’amafuta g’eby’obuggagga eby’omunda lirinnya ne liyitawo Diguli 100 eza Celsius (Diguli 212 eza Fahrenheit), core laminations zikankana nnyo, era ebiyungo eby’omunda bitandika okukola arc oba sizzle. Singa okuwuuma kufuuka okuwuuma okw’amaanyi, okuwuuma kwa bacon okusiika, oba okuwuuma okw’ekyuma, sigala Mita 15 (ffuuti 50) ddayo n’oyita amangu ddala ekitongole kyo eky’amasannyalaze basobole okwekebejja yuniti nga tennakutuka.

Embwa yange yakwatibwa ensisi oba n’ekuba enduulu n’ebuuka n’edda emabega ng’etambula ku muddo okumpi ne bbokisi y’amasannyalaze eya kiragala. Kiki ekyabaddewo?¶

Embwa yo yafuna obumanyirivu contact voltage (stray voltage) oba obusobozi bw’omutendera gw’ensobi ku ttaka. Nick y’okuziyiza waya wansi w’ettaka oba waya ya concentric neutral efuuse enfuufu bw’ekulukuta akasannyalazo mu ttaka ennyogovu, ekigerageranyo kya vvulovumenti kikolebwa okubuna ettaka okwetooloola paadi ya seminti. Kubanga embwa etambulira ku bigere bina ebibisi era ebitaliiko kintu kyonna ebiwanvuwa Mita 0.5 okutuuka ku 0.9 (Ffuuti 1.5 ku 3) era nga erina ekipimo kya fibrillation ekitono, wadde 15 okutuuka ku 50 volts okubuna omuddo kuleeta ensisi eruma oba etta wakati w’amagulu gaayo ag’omu maaso n’ag’emabega. Sika embwa yo edde ku kolaasi omukalu amangu ago, sigala waakiri Mita 10 okutuuka ku 15 (ffuuti 35 ku 50) okuva ku bbokisi, era oyite 911 n’ekitongole kyo eky’amasannyalaze okuloopa active energized-ground hazard eyamala okuwuniikiriza ekisolo.

Nsobola okusiiga langi ku bbokisi ya tulansifooma eya kiragala omubi mu luggya lwange olw’omu maaso okukwatagana n’ennyumba yange oba okugiteekako ekibikka eky’amayinja ekicupuli ekituli?¶

Nedda, tosiiga langi ku tulansifooma esimbye ku paadi oba okugiteekako ekibikka kya fiberglass faux-rock. Okusooka, enamel ya Munsell-green ey’ekkolero ekoleddwa yinginiya okufulumya ebbugumu ery’omunda okuva mu... Diguli 100-Celsius ttanka y’amafuta; okusiiga kabineti langi ya latex house paint insulates ttanka, ebikka critical Stencil Number ya digito 6 ku 10 n’ebiwandiiko ebirabula ebya vvulovumenti eya waggulu, era n’asiba omumwa gw’empewo n’olukoba lwa penta-bolt ne biggalawo. Ekyokubiri, okuteeka ejjinja eririko ekituli ku tulansifooma ejjudde amafuta kikwata ebbugumu okutuusa ng’ebiwujjo eby’omunda bidduka olw’ebbugumu ne bibwatuka. Singa langi eri ku bbokisi y’oku muliraano yo esekula oba ng’efuuse enfuufu, kuba essimu y’ekitongole ky’amasannyalaze: abakola ku by’amasannyalaze basindika abakozi abaddaabiriza okukebera oba amafuta gakulukuta n’okuddamu okusiiga kabineti langi mu kizigo ekikkirizibwa ekitongole ku bwereere.

Amataala mu nnyumba yange gakendeera era nga gakulukuta nnyo ate nga ne bbokisi eya kiragala ebweru ewuuma. Lwaki ekitundu ky’ennyumba yange kirina amataala agayaka ennyo?¶

Oli mu kufuna... "Empeereza enzigule Etaliimu". munda mu kisenge kya tulansifooma ekissiddwa ku paadi (oba ku mabbali g’ekifo kyo eky’okuweereza wansi w’ettaka). Amasannyalaze g’okusula mu North America gayingira mu maka go nga babiri 120-volt amagulu agookya (240 volts omugatte) okugabana waya etaliimu makkati eri ku ttaka. Oyo neutral lug bw’eyokya n’esumululwa munda mu bbokisi ya tulansifooma eya kiragala, ebibiri 120-volt ebitundu by’ennyumba yo bigabanya vvulovumenti mu ngeri etaali ya kyenkanyi okusinziira ku byuma ebidduka, nga bisindika okutuuka ku 180 okutuuka ku 210 volts mu kitundu kimu eky’ebifo byo eby’okutundamu (okufuula bbaatule okumasamasa mu ngeri eziba amaaso n’okusiika ebipande by’ekikoomi, firiigi, ne surge strips) ate ng’osuula ekitundu ekirala ku 30 okutuuka ku 60 volts. Bw’oba nga ekipande kyo eky’okumenya eky’omunda kisirifu era nga kiyonjo, flip your... Main Breaker OFF amangu ddala era oyite ekitongole ekivunaanyizibwa ku by’obulamu okuloopa emergency open neutral.

Sitiika ya katunguluccumu ey'enjuyi essatu ("Mr. Ouch") eri mu maaso ga bbokisi ya tulansifooma eya kiragala etegeeza ki?¶

Ekiwandiiko eky’okulabula eky’enjuyi essatu ekya kyenvu n’emmyufu ekiraga ekifaananyi ky’omulabe nga kiwuniikiriza omukono gw’omwana kye... Ekibiina ekigatta abakola amasannyalaze mu ggwanga (NEMA) "Mr. Ouch" Akabonero akalaga akabi aka vvulovumenti eya waggulu, eyateekebwa ku mutindo mu myaka gya 1980 oluvannyuma lw’okunoonyereza ku bulamu bw’abaana okulaga nti abaana abato abatasobola kusoma "AKABI - VOLTAGE EY'ENJAWULO - KUUMA EBWERU". mu butonde manya era weewale ffeesi ya katunguluccumu eriko ennaku. Buli lw'olaba "Mr. Ouch" decal ku bbokisi y'ekyuma eya kiragala mu luggya oba mu ppaaka, kikakasa nti enclosure erimu ebyuma ebitta eby’okusaasaanya vvulovumenti ennene (7,200 okutuuka ku 34,500 volts) . okusinga okukozesa waya z’essimu oba cable-TV ezikozesa vvulovumenti entono.

Omukugu mu kulongoosa ettaka yawanirira pikipiki oba riding mower mu bbokisi ya tulansifooma eya kiragala n’agikoona katono ku paadi yaayo eya seminti, kyokka ng’amasannyalaze gakyaliko. Tekirina bulabe?¶

Nedda, tulansifooma esimbye ku paadi ekyusiddwa oba efuukuuse kitwale ng’embeera ey’amangu etta obulamu bw’omuntu ne bwe kiba nti amasannyalaze g’oku muliraano gakyakola. Emmotoka bw’ekyusa kabineti ya tulansifooma eya kiragala wadde sentimita 5 ku 10 (Yinsi 2 ku 4) ku paadi yaayo eya seminti, ekikaluba wansi w’ettaka 7,200-volt waya ezisookerwako ezijja waggulu nga ziyita mu ddirisa lya seminti zisimbulwa nnyo ku ludda olusongovu olwa kabineti y’ekyuma oba ekifo kya seminti, ne zikutula ekiziyiza ky’enkokola ekya kapiira oba okukutula omusipi gw’ettaka ogw’ekikomo ogw’obwereere oguyungiddwa ku kkeesi. Mu ddakiika oba ssaawa ntono,... `7,200-volt` cable esobola arc butereevu mu kisusunku kya kabineti y’ekyuma, n’ewa amaanyi mu bbokisi yonna n’ettaka erigyetoolodde. Okusengulwa `15 meters` (`50 feet`) ewala n’okuyita `911` n’ekitongole ky’amasannyalaze amangu ddala.

Ebiragiro ebikwatagana nabyo¶

• Bokisi ya tulansifooma eya kiragala essiddwa ku paadi okubwatuka, omuliro gwa woyiro, n’obulabe bwa kabineti enzigule
• Vvulovumenti eyabula ku amataala g’oku nguudo ag’ebyuma, ebibikka ebinnya by’oku mabbali g’ekkubo, n’ebiwujjo by’embwa ezitambula
• Downed telecommunications fiber oba coax cable vs. energized secondary amaanyi okugwa okuyita mu kuzuula ekkubo eriyingira mu mmotoka
• Rolling brownouts, voltage sag, n’okukuuma okwokya kw’ebyuma
• Ennamba z’amangu okusinziira ku nsi

Ensonda n’obulagirizi obutongole¶

• Ekitongole kya bayinginiya b'amasannyalaze n'ebyuma bikalimagezi (IEEE) & Etteeka ly'eggwanga ery'obukuumi bw'amasannyalaze (NESC): IEEE Std C57.12.28 (Ebyuma Ebissibwa ku Pad - Obulungi bw’Ekisenge), IEEE Std C57.12.25 / C57.12.34 (Omutindo gwa Pad-Mounted, Compartmental-Type, Self-Cooled Distribution Transformers, 2,500 kVA n’Ebitono; Voltage ya waggulu 34,500 GrdY/19,920 Volts ne Wansi), ne NESC (IEEE C2) Etteeka 380 / Etteeka 215 (Ebitundu ebiyitibwa Pad-Mounted Clearances ne Grounding).
• Ekitongole ekivunaanyizibwa ku byokwerinda n’ebyobulamu ku mirimu (OSHA, Amerika): 29 CFR § 1910.269 (Okukola Amasannyalaze, Okutambuza, n'Okusaasaanya): Amabanga agasinga obutono aga vvulovumenti eya waggulu, Emirimu gy'Ekifo ekiggaddwa / Pad-Mounted Hot-Stick, n'Obukuumi bw'Ekisoboka eky'Eddaala/Okukwata.
• Ekitongole kya U.S. ekikuuma obutonde bw’ensi (EPA): ** .40 CFR Part 761 Subpart G (Enkola y’okuyonja ebiyidde ebiyidde ebiyitibwa Polychlorinated Biphenyls / PCB, §§ 761.120-761.135)** ne 40 CFR Part 112 (Okuziyiza obucaafu bw'amafuta / Ebyetaago bya SPCC ku byuma by'amasannyalaze eby'amafuta g'eby'obuggagga bw'omu ttaka).
• Ekibiina ekigatta abakola amasannyalaze mu ggwanga (NEMA): Omutindo gwa NEMA 260 (Ebiwandiiko by'obukuumi ku Switchgear ne Transformers eziteekeddwa ku Pad, "Mr. Ouch" Enkola y'okulabula ku bulabe bw'olukale) ne Ebikwata ku Penta-Head Security Bolt Tamper-Resistance Specifications.
• Omukungu avunaanyizibwa ku by'obulamu n'obukuumi (HSE, Bungereza): Ebiragiro ebikwata ku byokwerinda by’amasannyalaze, omutindo n’okugenda mu maaso (ESQCR) 2002 ne * .HSG47 (Okwewala Obulabe okuva mu Mpeereza y’Ensi n’Ebifo ebigaba)*.