{"id":1616,"date":"2026-05-08T00:00:00","date_gmt":"2026-05-08T00:00:00","guid":{"rendered":"http:\/\/yieou.com\/?post_type=products&p=1616"},"modified":"2026-09-29T07:30:59","modified_gmt":"2026-09-29T07:30:59","slug":"jdz12a-10r-voltage-transformer","status":"publish","type":"products","link":"https:\/\/yieou.com\/pt\/product\/jdz12a-10r-voltage-transformer\/","title":{"rendered":"JDZ12A-10R Voltage Transformer"},"content":{"rendered":"

JDZ12A-10R Voltage Transformer<\/p>\n\n\n\n

Vis\u00e3o Geral do Produto<\/h3>\n\n\n\n

O transformador de tens\u00e3o JDZ12A-10R<\/a> \u00e9 um transformador de tens\u00e3o seco, encapsulado em resina ep\u00f3xi, projetado especificamente para sistemas de energia CA internos de 10 kV (Um=12 kV). Ele incorpora um design de fus\u00edvel integrado que combina as fun\u00e7\u00f5es de transforma\u00e7\u00e3o de tens\u00e3o, isolamento el\u00e9trico e prote\u00e7\u00e3o contra sobrecorrente. \u00c9 utilizado principalmente para medi\u00e7\u00e3o de tens\u00e3o, medi\u00e7\u00e3o de energia, prote\u00e7\u00e3o de rel\u00e9s e monitoramento de isolamento em m\u00e9dia tens\u00e3o interna. switchgear<\/a>e \u00e9 amplamente aplicado em sistemas de distribui\u00e7\u00e3o de 10kV, subesta\u00e7\u00f5es compactas, postos de manobra e instala\u00e7\u00f5es similares, atendendo aos requisitos de projetos de aparelhagem compacta.<\/p>\n\n\n\n

Principais Caracter\u00edsticas do Produto<\/h3>\n\n\n\n

Isolamento e Desempenho El\u00e9trico<\/h3>\n\n\n\n

Fully-Enclosed Epoxy Resin Cast Insulation: The unit is integrally formed by vacuum epoxy resin casting with no internal voids, providing excellent insulation performance. It withstands the 12kV system operating voltage and power-frequency and impulse withstand voltage tests. Partial discharge level \u226410pC. Long-term operation presents no insulation aging risk, with no leakage or oil contamination hazard, suitable for oil-free indoor distribution environments.<\/p>\n\n\n\n

Integrated Fuse Protection: A built-in high-voltage fuse enables rapid interruption upon primary-side overcurrent or short circuit, protecting the transformer body from damage. This simplifies the primary circuit design within the panel, reduces the need for external fuse components, and lowers equipment cost and installation space requirements.<\/p>\n\n\n\n

Wide Voltage Ratio Compatibility: Supports standard voltage ratios (e.g., 10\/0.1kV, 10\/0.1\/0.1kV). Metering-class accuracy up to Class 0.2; protection-class accuracy customizable to 3P\/6P, meeting requirements for metering, protection, and insulation monitoring applications.<\/p>\n\n\n\n

Low Partial Discharge Design: Advanced casting technology keeps partial discharge level \u226410pC, preventing insulation aging caused by long-term partial discharge and improving long-term operational reliability.<\/p>\n\n\n\n

Estrutura e Caracter\u00edsticas de Instala\u00e7\u00e3o<\/h3>\n\n\n\n

Fully-Enclosed Dry-Type Construction: Integrally cast with no exposed live parts. Protection degree IP20. Oil-free design eliminates fire hazards. Compact and small in volume, compatible with standard 10kV switchgear installation dimensions.<\/p>\n\n\n\n

Integrated Fuse Design: High-voltage side incorporates a replaceable fuse assembly requiring no additional fuse mounting brackets, reducing the number of components inside the panel and improving internal space utilization.<\/p>\n\n\n\n

Clear Secondary Terminals: Secondary terminals are protected by a terminal cover, clearly labeled, and easy to wire, preventing misconnection and short circuits. Terminal layout conforms to secondary circuit wiring standards for switchgear.<\/p>\n\n\n\n

Flexible Mounting: Bottom metal mounting base with fixing holes supports bolt-mounted installation. Suitable for horizontal indoor panel mounting. Provides secure fastening with excellent vibration resistance and facilitates compact arrangement within the panel.<\/p>\n\n\n\n

Funcionalidades Operacionais e de Manuten\u00e7\u00e3o<\/h3>\n\n\n\n

Maintenance-Free Operation: Dry, oil-free construction with no leakage or fire hazard. The epoxy resin cast body offers high mechanical strength, impact resistance, and aging resistance, enabling long-term maintenance-free operation and reduced operating costs. Fuse replacement is straightforward and requires no specialized tools, ensuring high maintenance efficiency.<\/p>\n\n\n\n

Wide Temperature Operation: Suitable for ambient temperatures from -30\u00b0C to +70\u00b0C. Epoxy resin maintains stable performance at both high and low temperatures with no risk of embrittlement or deformation, adaptable to climatic conditions across different regions.<\/p>\n\n\n\n

High-Reliability Design: The core is laminated from high-quality silicon steel sheets; windings are wound with enameled copper wire. Low operating losses and minimal heat generation. Capable of withstanding system switching overvoltages and lightning impulse overvoltages. The fuse performs reliably, ensuring dependable protective operation and safe equipment operation.<\/p>\n\n\n\n

Par\u00e2metros T\u00e9cnicos (Especifica\u00e7\u00f5es T\u00edpicas)<\/h3>\n\n\n\n
Categoria de Par\u00e2metro<\/td>Item<\/td>Especifica\u00e7\u00e3o T\u00e9cnica<\/td><\/tr>
Par\u00e2metros El\u00e9tricos<\/td>Tens\u00e3o do Sistema<\/td>10kV CA (Um=12kV)<\/td><\/tr>
<\/td>Frequ\u00eancia Nominal<\/td>50Hz<\/td><\/tr>
<\/td>| Tens\u00e3o Prim\u00e1ria Nominal<\/td>10kV<\/td><\/tr>
<\/td>Tens\u00e3o Secund\u00e1ria Nominal<\/td>100V (metering \/ protection); 100\/3V (insulation monitoring, optional)<\/td><\/tr>
<\/td>| Classe de Medi\u00e7\u00e3o Precis\u00e3o<\/td>Classe 0,2 \/ 0,5 \/ 1<\/td><\/tr>
<\/td>| Classe de Prote\u00e7\u00e3o Precis\u00e3o<\/td>3P \/ 6P<\/td><\/tr>
<\/td>| Tens\u00e3o de Suporte em Frequ\u00eancia de Rede (terminal de alta tens\u00e3o)<\/td>42kV \/ 1min, sem ruptura<\/td><\/tr>
<\/td>Tens\u00e3o de Resist\u00eancia ao Impulso (pico)<\/td>75kV, sem ruptura<\/td><\/tr>
<\/td>| N\u00edvel de Descarga Parcial<\/td>\u226410pC<\/td><\/tr>
<\/td>Resist\u00eancia de Isolamento (Alta Tens\u00e3o para Baixa Tens\u00e3o e Terra)<\/td>\u22651000M\u03a9<\/td><\/tr>
<\/td>Corrente Nominal do Fus\u00edvel Embutido<\/td>0.5A (standard), customizable<\/td><\/tr>
Par\u00e2metros Estruturais e de Materiais<\/td>Meio Isolante<\/td>Molde completo de resina ep\u00f3xi<\/td><\/tr>
<\/td>| Grau de Prote\u00e7\u00e3o<\/td>IP20<\/td><\/tr>
<\/td>| M\u00e9todo de Montagem<\/td>Montagem de parafuso tipo poste interno<\/td><\/tr>
<\/td>| Classe T\u00e9rmica de Isolamento<\/td>Classe B (130\u00b0C)<\/td><\/tr>
Par\u00e2metros Ambientais<\/td>Altitude Aplic\u00e1vel<\/td>\u22642000m (personaliza\u00e7\u00e3o para alta altitude dispon\u00edvel)<\/td><\/tr>
<\/td>| Temperatura Ambiente de Opera\u00e7\u00e3o<\/td>-30\u00b0C a +70\u00b0C<\/td><\/tr>
<\/td>| Temperatura Ambiente de Armazenamento<\/td>-40\u00b0C a +85\u00b0C<\/td><\/tr>
<\/td>Umidade Relativa<\/td>\u226495% (sem condensa\u00e7\u00e3o)<\/td><\/tr>
Normas Aplic\u00e1veis<\/td>Normas Nacionais<\/td>Transformadores de Tens\u00e3o GB 1207; s\u00e9rie GB\/T 20840; Fus\u00edveis de Alta Tens\u00e3o CA GB 15166.2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Escopo da Aplica\u00e7\u00e3o<\/h3>\n\n\n\n

N\u00edvel de Tens\u00e3o Aplic\u00e1vel: Sistemas de energia CA internos de 10kV (Um=12kV).<\/p>\n\n\n\n

Cen\u00e1rios de Aplica\u00e7\u00e3o T\u00edpicos:<\/p>\n\n\n\n

Voltage measurement, energy metering, and relay protection in indoor medium-voltage switchgear (KYN28 series) and compact substations;<\/p>\n\n\n\n

Sistemas de distribui\u00e7\u00e3o de 10kV em subesta\u00e7\u00f5es de distribui\u00e7\u00e3o, empresas industriais e de minera\u00e7\u00e3o, edif\u00edcios comerciais e parques industriais;<\/p>\n\n\n\n

Aquisi\u00e7\u00e3o de sinais de monitoramento, controle e prote\u00e7\u00e3o de tens\u00e3o em sistemas de automa\u00e7\u00e3o de energia;<\/p>\n\n\n\n

Compact switchgear applications requiring simplified primary circuits and reduced component count.<\/p>\n\n\n\n

Functional Purpose: Steps down high voltage in the power system proportionally to a standard low voltage (100V), providing voltage signals to metering instruments, protective relays, and control equipment while achieving electrical isolation between the primary and secondary systems. The built-in fuse provides rapid interruption upon primary-side overcurrent or short circuit, protecting the transformer body from damage and providing dual assurance for safe equipment operation.<\/p>\n\n\n\n

Condi\u00e7\u00f5es de Opera\u00e7\u00e3o<\/h3>\n\n\n\n

Condi\u00e7\u00f5es Normais de Opera\u00e7\u00e3o<\/h3>\n\n\n\n

Altitude: \u22642000m<\/p>\n\n\n\n

Temperatura ambiente: -30\u00b0C a +70\u00b0C, sem flutua\u00e7\u00f5es severas de temperatura<\/p>\n\n\n\n

Umidade Relativa: \u226495% (sem condensa\u00e7\u00e3o)<\/p>\n\n\n\n

Condi\u00e7\u00f5es Ambientais: Livre de gases corrosivos, meios inflam\u00e1veis ou explosivos, vibra\u00e7\u00e3o e choques severos, e poeira ou n\u00e9voa salina significativas<\/p>\n\n\n\n

Mounting: Indoor post-type installation; avoid direct sunlight, rain, and condensation<\/p>\n\n\n\n

Condi\u00e7\u00f5es Operacionais Especiais (Requer Personaliza\u00e7\u00e3o)<\/h3>\n\n\n\n

Altitude superior a 2000m;<\/p>\n\n\n\n

Temperatura ambiente fora da faixa de -30\u00b0C a +70\u00b0C;<\/p>\n\n\n\n

Ambientes severamente polu\u00eddos, com n\u00e9voa salina ou quimicamente corrosivos;<\/p>\n\n\n\n

Conditions of heavy vibration or strong impact;<\/p>\n\n\n\n

Non-standard voltage ratios, accuracy classes, or fuse parameter requirements.<\/p>\n\n\n\n

Instala\u00e7\u00e3o e Manuten\u00e7\u00e3o<\/h3>\n\n\n\n

Requisitos de Instala\u00e7\u00e3o<\/h3>\n\n\n\n

Pre-Installation Preparation: Inspect the voltage transformer’s appearance \u2014 the cast body shall be free of cracks, voids, and damage; terminals shall be clearly labeled and all accessories present. Verify that the model, specifications, voltage ratio, and fuse parameters match the design requirements, and confirm the fuse is intact.<\/p>\n\n\n\n

Mechanical Installation: Position the voltage transformer at the designated location inside the switchgear panel. Secure with bolts through the bottom mounting holes, ensuring firm installation with no looseness or misalignment. The mounting surface shall be level to avoid uneven loading.<\/p>\n\n\n\n

High-Voltage Side Wiring: Connect the high-voltage terminals per design requirements, ensuring tight connections and good contact. Maintain adequate safety clearance between high-voltage leads and grounded parts or other live components to prevent flashover.<\/p>\n\n\n\n

Low-Voltage Side Wiring: Connect the low-voltage terminals according to their labels, with separate wiring for metering, protection, and insulation monitoring circuits; verify correct connections. Secondary circuits must not be short-circuited and must be reliably grounded (single-end grounding) to prevent overvoltages.<\/p>\n\n\n\n

Insulation Testing: After installation, measure the insulation resistance of the voltage transformer (HV to LV and ground; LV to ground) to verify insulation performance meets requirements. Check that secondary circuit wiring is correct with no short circuits or open circuits.<\/p>\n\n\n\n

Diretrizes de Manuten\u00e7\u00e3o<\/h3>\n\n\n\n

Regularly inspect the voltage transformer’s appearance: the cast body shall show no cracks, damage, or discharge marks; high-voltage terminals shall show no looseness or oxidation; the fuse shall show no signs of operation or damage.<\/p>\n\n\n\n

Regularly inspect high- and low-voltage connections for tightness and absence of heat discoloration. Verify that low-voltage circuit grounding is reliable with no risk of short circuit or open circuit.<\/p>\n\n\n\n

Periodically test insulation resistance and voltage ratio to confirm that metering and protection accuracy meets requirements, and check the fuse condition.<\/p>\n\n\n\n

Clean dust and contamination from the transformer surface; prevent oil or corrosive substances from adhering; keep the unit dry and clean.<\/p>\n\n\n\n

When a fuse operates or is damaged, immediately de-energize and replace it with a fuse of the same type and rating. The use of non-specified fuse types is strictly prohibited. If the voltage transformer exhibits abnormalities such as cracking, discharge, overheating, or voltage ratio deviation, immediately de-energize for inspection; replace the unit if necessary. Operation with known defects is strictly prohibited.<\/p>\n\n\n\n

Precau\u00e7\u00f5es<\/h3>\n\n\n\n

Secondary windings must not be short-circuited. A short circuit in the secondary circuit during operation will produce large currents, endangering equipment and personnel safety. During maintenance, the secondary circuit must be reliably open-circuited and grounded.<\/p>\n\n\n\n

During installation, avoid impact or collision with the cast body and high-voltage terminals to prevent cracking of the epoxy resin and insulation damage, which would impair insulation performance.<\/p>\n\n\n\n

High-voltage side connections must use dedicated insulated conductors, maintaining adequate safety clearance from grounded parts and other live components to prevent phase-to-phase or phase-to-ground discharge.<\/p>\n\n\n\n

Equipment grounding must be reliable. The base grounding terminal must be securely connected to the panel grounding busbar.<\/p>\n\n\n\n

During storage, keep the unit in a dry, ventilated, cool environment away from direct sunlight, high temperatures, moisture, and mechanical compression to prevent aging or deformation of the cast body and moisture damage to the fuse.<\/p>\n\n\n\n

Installation, commissioning, and maintenance must be performed by qualified electrical personnel in strict accordance with electrical safety operating procedures. Fuse replacement must be performed with the equipment de-energized. Live replacement is strictly prohibited.<\/p>\n\n\n\n

Lista de Configura\u00e7\u00e3o Padr\u00e3o<\/h3>\n\n\n\n
N\u00e3o.<\/th>Item<\/th>Prop\u00f3sito<\/th><\/tr><\/thead>
1<\/td>JDZ12A-10R Voltage Transformer Body<\/td>Core unit implementing voltage transformation, isolation, and protection<\/td><\/tr>
2<\/td>Parafusos e Arruelas de Montagem<\/td>Used for securing the voltage transformer<\/td><\/tr>
3<\/td>Tampa do Terminal Secund\u00e1rio<\/td>Protects low-voltage terminals against misconnection and short circuits<\/td><\/tr>
4<\/td>Manual do Produto<\/td>Installation, operation, and maintenance guide including fuse replacement instructions<\/td><\/tr>
5<\/td>Certificado de Conformidade do Produto e Relat\u00f3rio de Teste de F\u00e1brica<\/td>Product quality and performance documentation including voltage ratio and error test data<\/td><\/tr>
6<\/td>Spare Fuse (optional)<\/td>Para substitui\u00e7\u00e3o em caso de falha do fus\u00edvel<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Normas e Certifica\u00e7\u00f5es Aplic\u00e1veis<\/h3>\n\n\n\n

The product conforms to the following national standards: GB 1207 Voltage Transformers; GB\/T 20840.1 Instrument Transformers \u2014 Part 1: General Requirements; GB\/T 20840.3 Instrument Transformers \u2014 Part 3: Additional Requirements for Inductive Voltage Transformers; GB 15166.2 AC High-Voltage Fuses. The product has passed type tests and its performance meets the operational requirements of 10kV indoor power systems.<\/p>\n\n\n\n

Ap\u00eandice: Desenho do Esbo\u00e7o do Produto<\/p>\n\n\n\n

\"JDZ12A-10R<\/figure>\n\n\n\n

<\/p>\n\n

\n\n\t\t\n
    \n\t\t\t <\/ul>\n <\/div>","protected":false},"excerpt":{"rendered":"

    JDZ12A-10R Voltage Transformer Product Overview The JDZ12A-10R voltage transformer is a fully-enclosed, epoxy-resin cast, dry-type voltage transformer designed specifically for […]<\/p>\n","protected":false},"featured_media":134,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_category":[30],"class_list":["post-1616","products","type-products","status-publish","has-post-thumbnail","hentry","product_category-instrument-transformer-series"],"acf":{"products_imagines":[2337,2338],"short_describe":"","pdf_file":"","related_products":{"products":""},"technical_parameter":"","outline_and_installation_dimension":""},"_links":{"self":[{"href":"https:\/\/yieou.com\/pt\/wp-json\/wp\/v2\/products\/1616","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yieou.com\/pt\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/yieou.com\/pt\/wp-json\/wp\/v2\/types\/products"}],"acf:attachment":[{"embeddable":true,"href":"https:\/\/yieou.com\/pt\/wp-json\/wp\/v2\/media\/2338"},{"embeddable":true,"href":"https:\/\/yieou.com\/pt\/wp-json\/wp\/v2\/media\/2337"}],"wp:attachment":[{"href":"https:\/\/yieou.com\/pt\/wp-json\/wp\/v2\/media?parent=1616"}],"wp:term":[{"taxonomy":"product_category","embeddable":true,"href":"https:\/\/yieou.com\/pt\/wp-json\/wp\/v2\/product_category?post=1616"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}