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JN22B-40.5 Indoor Earthing Switch
JN22B-40.5 indoor earthing switch est un dispositif de mise à la terre haute tension triphasé, classé 40,5 kV, conçu pour être installé dans des armoires de commutation moyenne tension fonctionnant sur des réseaux de 35 kV et 40,5 kV. Conforme à la norme IEC 62271-102, ce sectionneur de terre intègre des isolateurs en résine époxy améliorés pour 40,5 kV, offrant une tenue diélectrique et une résistance aux arcs exceptionnelles, un mécanisme de fermeture rapide à ressort destiné aux applications de mise à la terre en cas de défaut, ainsi qu’un arbre d’entraînement central assurant la synchronisation des trois phases. Ce sectionneur de terre à haute vitesse est utilisé dans les sous-stations de transmission publique, les systèmes électriques industriels lourds et les centrales d’énergie renouvelable à grande échelle nécessitant une mise à la terre à tension élevée.
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JN22B-40.5 Interruptor de puesta a tierra en vacío de alta velocidad – 35 kV / 40,5 kV
JN22B-40.5 es un interruptor de puesta a tierra trifásico de alta velocidad para sistemas de 35 kV y 40,5 kV, que emplea interruptores en vacío como elementos de cierre. Se instala en cuadros de maniobra blindados KYN61-40.5 y paneles equivalentes de 40,5 kV, ofreciendo capacidad de cierre bajo fallo para puesta a tierra en la clase de tensión de distribución más elevada de nuestra gama.
¿POR QUÉ LOS 35 kV REQUIEREN UN ENFOQUE DISTINTO
Ad 12 kV et 24 kV, interruptor terra conventionales generis lamellaris construi potest cum sufficienti capacitate connexionali per contactus in aere aperto. Ad 40,5 kV, requiruntur spatia maioris amplitudinis et energia liberata durante coniunctione defectus facit ut designatio in aere aperto sit magna, lenta et difficilis ad continendum. JN22B interruptores vacuum sigillatos ut elementa connexionalia utitur: arcus in camera vacuum continetur, itaque eventus coniunctionis defectus continetur, non autem in compartimentum emittitur ut arcus apertus.
CIERRE DE ALTA VELOCIDAD
Mechanismus est motus a mola et independens a velocitate operatoris. Postquam manubrium operativum transgreditur suum punctum trip, mola claudit contactus ad velocitatem altam fixam, sive operator lentissime sive dubitanter levarum movet. Hoc est importante, quia clausura lenta in circuitu vivo producit arcam praeviam prolongatam, erosionem contactuum et potenter contactus saldatus. Operatio alti velocitatis independens omnino tollit technicam operatoris e aequatione securitatis.
UBI TERRA 35 kV REQUIRITUR
Classis 40,5 kV servit rete 35 kV, quae sunt voltages distributivae et subtransmissionis communiter usitatae in Russia et in CIS, et inveniuntur in applicationibus industrialibus et publicis in Europa Orientali. In retibus Medii Orientis et Africae, distributio 33 kV etiam in hanc classem instrumentorum cadit. Haec sunt circuitus altius energici, ubi clausura fortuita defectus graviora consequentias habet quam ad 11 kV; propter hoc facultas faciendi defectum specificatur, non autem optatur.
THREE-POLE OPERATION AND INTERLOCKING
All three phases earth simultaneously from a single shaft. Mechanical interlocking with the circuit breaker and cable compartment door enforces the correct sequence: breaker open and withdrawn before earthing, earth applied before compartment access, no rack-in while earthed. Auxiliary switch blocks provide earth-applied status to protection relays and SCADA.
CONGRUENTIA MERCATUS
Serves 35kV networks in Russia, CIS and Eastern Europe, and 33kV networks in the Middle East and Africa. GOST 15150 climatic versions with low-temperature grease are available for CIS supply, where 35kV rural sub-transmission is extensive and winter access is difficult. ASTA type-test certification available for utility and EPC procurement.
Applicationes principali
- Cable and busbar earthing in KYN61-40.5 metal-clad switchgear.
- 35kV distribution and sub-transmission substations across Russia and the CIS, where 35kV is a mainstream network voltage.
- Substationes distributionis 33 kV in Medio Oriente et Africa, inter quas rete SEC Arabiae Sauditarum et distributiones 33 kV in Nigeria et Kenya.
- Substationes industriales 35 kV pro plantis industrialibus: extractione mineralium, metallurgia, fabrica cementi, petrochemia.
- Substationes collectionis pro generatione renovabili, quae tensionem ad 33 kV vel 35 kV augent.
- Substationes publicae, ubi correntes defectus prospectae et energia systematis exigunt terram facientem defectum, non simplicem terram isolantem.
- Terrae sectionis omnibus et terrae coniunctionis omnibus in apparatibus interruptorum 40,5 kV.
- Terrae circuitus primarii transformatorum ante operationes manutentionis in unitatibus 35 kV.
CUR CAPACITAS FACIENDI DEFECTUM SPECIFICATUR AD HANC TENSIONEM
At 35 kV, the energy stored in a fault is much greater than at 11 kV, and the consequences of a delayed or failed earthing operation are accordingly more serious. Utility specifications for this voltage class regularly require an earthing switch capable of closing onto a live circuit and carrying the fault current until upstream protection operates. A switch rated only for isolating earthing does not meet these specifications.
Congruentia Regionalis
- Russia and CIS: 35 kV is a core distribution and sub-transmission voltage, with extensive rural networks. GOST R certification; GOST 15150 climatic versions for low-temperature service.
- Eastern Europe: 35 kV industrial and utility applications to EN 62271-102.
- Middle East: 33 kV distribution, notably in Saudi Arabian SEC networks, subject to utility material approval and often requiring witnessed type testing.
- Africa: 33 kV distribution across Nigeria, Kenya, Ghana, Tanzania, and South Africa.
Non idoneus pro
Systems at 12 kV and 24 kV — specify JN15A-12 or JN17, which are correct and considerably more economical. Outdoor installation without an enclosure. Applications where only isolation earthing without fault-making duty is required and the lower voltage classes apply.
TECHNICAL DATA — JN22B-40.5 High-Speed Vacuum Earthing Switch
| Item | Specificatie |
| Conformitas | IEC 62271‑102, GB 1985 |
| Electrical Ratings | |
| Voltage aestimatum | 40.5 k V |
| Frequentia censita | 50 Hz / 60 Hz |
| Rated power‑frequency withstand voltage (1 min) | 95 k V to earth / 118 k V across isolating distance |
| Rated lightning impulse withstand voltage (BIL) | 185 k V peak / 215 k V across isolating distance |
| Rated short‑circuit making current | 63 kA / 80 kA ad cacumen |
| Rated short‑time withstand current | 25 kA / 31,5 kA pro 4 s |
| Summa evaluationis tolerabilis in praesenti | 63 kA / 80 kA |
| Numerus polorum | 3, operatione simultanea ab unico axes |
| ELEMENTUM FABRICANDUM | |
| Typus | interruptor vacuum sealed, unus pro singulo polo |
| Continentia arcus | plenissime contentus intra cameram vacuum durante clausura defectuosa |
| Mechanismus | clausio motu moli, celeris, independentis a velocitate operatoris |
| Velocitas claudendi | fixata per energiam molae, non per artem operatoris |
| Operatio | |
| Manualis | operatio per levum cum assistentia molae ad claudendum celeriter |
| Motorisatus (optio) | Operator motoris AC/DC 110 V aut 220 V cum superatione manuella locali |
| Indicatio positionis | indicator mechanicus, directe ductus ab axe principalis |
| Interruptor Auxiliar | usque ad 6NO6NC |
| Interlocking | interclusio mechanica cum interruptore circuitus et ostio compartimenti cavi |
| Clausura clavibus | praebitio in utrisque positionibus, aperta et terrata |
| Patientia | |
| Vita Mechanica | minimum 2 000 operationes |
| Operationes coniungendi ad currentem coniungendam nominalem | minimum 2 operationes |
| Construction | |
| Interruptor vacuum | capsula ceramica sigillata, una per fase |
| Isolatori di supporto | resina epossidica cicloalifatica, tensione di tenuta a impulso di 185 kV |
| Frons | acciaio zincato a caldo o rivestito a polvere |
| Terminale di messa a terra | Bullone M12 / M16 per conduttore di terra principale |
| Montatio | Pannelli metallici incapsulati KYN61‑40.5 e analoghi da 40.5 kV |
| Gravitas | circa 60‑90 kg |
| Status servitii | |
| Ambiens Temperature | da ‑25 ℃ a +55 ℃ |
| Altitudo | usque ad 1000 m standard; usque ad 2000 m pro petitione |
| Humiditas relativa | medius diurnus non ultra 95% |
| Installatio | intra aedificium, intra interruptores metallicos clausos |
| Certificatio | |
| Certificatio | Typus probatus secundum IEC 62271‑102; certificatum ASTA de probatione typi ad petitionem obtineri potest |
Optiones
Operator motorizatus AC/DC 110 V vel 220 V | contactus auxiliaries addititionales | sensor positonis pro signali SCADA | clavis ad claudendum | axis operativus productus | unctio frigida pro versionibus climaticis GOST 15150 | certificatio ASTA de probatione typi | fixatio ad mensuram specialem pro tabulis 40.5 kV non standard
SELEKTIO ANTE VENDITIONEM
- Recensio applicationis adversus officium tuum: currentes nominati, capacitas interrumpendi, ordo operandi, et frequencia commutandi exspectata.
- Dimensiones pro substitutione et refectione. Mitte nobis modellem unitatis iam existentis, distantiam centrorum polorum et dimensiones fixationis; nos confirmabimus intermutabilitatem antequam ordines emas.
- Verificatio rete: classis 12 kV pro retibus 10 kV (Russia/CIS) et 11 kV (Oriens Medius/Africa); 24 kV pro 20 kV et 22 kV; 40.5 kV pro 35 kV. Suppeditatio pro Arabia Saudita verificata est ad 60 Hz.
- Coil, motor, and auxiliary-contact configuration specified to your control voltage (AC/DC 110 V or 220 V) and SCADA interface requirement.
- Low-temperature variants with cold-rated grease and anti-condensation heating for CIS winter service.
MARKET ACCESS AND DOCUMENTATION
- Type-test reports to IEC 62271-100 / IEC 62271-102 / IEC 62271-103 as applicable, issued with the shipment.
- Third-party certification (KEMA, ASTA, CESI, TUV) available where tender documents require witnessed evidence rather than a manufacturer's report.
- Certification support for SASO SABER, SONCAP, KEBS PVoC, ICIGI, and GOST R submissions, including HS-code classification (Nigeria has required 10-digit HS codes since March 2025).
TESTING AND DELIVERY
- 100% routine testing before dispatch: power-frequency withstand, contact resistance, mechanical characteristic curve, timing test, and auxiliary circuit verification.
- Individual test report supplied per serial number.
- Exportatio cum desiccante et barriera adversus umorem; in palletis ad conglutinatas expeditiones.
- Documentatio: relatio de examinibus ordinariis, certificatum de examinibus typicis, schemata dimensionum, schemata connexionum, manuale operationis et manutenctionis, index partium reservarum.
Post-Venditio
- Directiva pro installatione et commissione, subsidium remotum aut missio ingeniorum.
- Formatio pro manutenctione, quae inspectionem mechanismi, mensuram abrasi contactuum et examen integritatis interruptorum vacui complectitur.
- Partes usurae (coils, contacts, componentes mechanismi) in magazino retentae ad substitutionem celerem.
- Responsio technica intra 24 horas; manuales multilingues in Anglico, Russo, Gallico et Arabico.
- Garantia: 18 menses ab expeditione aut 12 menses a commissione, quod prius exspirat.
Experimenta typorum
- Examina typica secundum normas IEC applicabiles — IEC 62271-100 pro interruptoribus circuitus, IEC 62271-102 pro interruptoribus terrae et disconnectoribus, IEC 62271-103 pro interruptoribus oneris.
- Certificatus pro capacitate interruptiva et facientis ad cortocircuitum nominali, pro corrente sustinenda brevi tempore, pro resistentia ad impulsum frequentialis et fulminis, pro incremento temperaturae, et pro durabilitate mechanica per totam seriem operationum nominalium.
- Certificatio a tertio partibus (KEMA, ASTA, CESI aut TUV) disponibilis ubi licitatio requirit probationem visam.
CONTROLLO INTERRUPTORIS VACUI (ubi applicabile)
- Omnis interruptor ante incorporationem testatur pro integritate vacui; deterioratio vacui est modus defectus praecipuus in VCB et non apparet externe post installationem.
- Stropha contactus, super-transitus et permisso usurae contactuum mensurantur et notantur pro singulis polis.
- Interruptores proveniunt tantum ab fabricantibus qualificatis cum traciabilitate partuum.
Inspectio in cursu productionis
- Componentes isolantes ante incorporationem testantur pro descensu partiali.
- Vis moli et characteristicum incaricationis verificantur contra specificatum.
- Distantia inter centra polarum et dimensiones interface montagii examinantur contra schemata — critica pro intercambiabilitate retroactiva.
- Spessore del placcaggio sui contatti conduttori verificato per ogni lotto.
PROVE DI ROUTINE - 100%, NESSUN CAMPIONAMENTO
- Tensione di tenuta a frequenza di rete tra i contatti aperti e verso terra.
- Misura della resistenza di contatto del circuito principale.
- Curva delle caratteristiche meccaniche: tempo di chiusura, tempo di apertura, rimbalzo dei contatti e simultaneità trifase.
- Funzionamento del meccanismo di manovra alle tensioni di comando minima, nominale e massima – un’unità che funziona soltanto alla tensione nominale non supererà un disturbo reale quando la tensione della batteria di stazione cala.
- Verifica della continuità e del segnalamento di posizione degli interruttori ausiliari.
- Relazione di prova di routine numerata emessa per ogni unità.
TRACEABILITAS ET SYSTEMA
- Systema gestionis qualitatis ISO 9001.
- Tracciabilità del numero di serie fino al lotto dell’interruttore a vuoto, al lotto del meccanismo e al lotto dei componenti isolanti.
- I registri delle prove sono conservati per tutta la durata della garanzia e sono disponibili su richiesta.
QUALIFICATIO AMBIENTALIS
Ubi conditio ambientalis destinata superat condiciones referentiales IEC, nos ad eam idoneos probamus: verificatio incrementi temperaturae ambientis elevatae pro usu in regione Sinus Persici, experimentum pulveris salini pro locis litoralibus, et verificatio operationis ad temperaturas minimas cum lubrificante frigus-resistente pro versionibus climaticis secundum GOST 15150.
