{"id":2229,"date":"2025-10-30T09:33:07","date_gmt":"2025-10-30T01:33:07","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=2229"},"modified":"2025-11-03T16:20:49","modified_gmt":"2025-11-03T08:20:49","slug":"surge-protection-device-vs-surge-protector-vs-surge-arrester","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/pt\/blog\/surge-protection-device-vs-surge-protector-vs-surge-arrester\/","title":{"rendered":"Dispositivo de prote\u00e7\u00e3o contra surtos VS Protetor contra surtos VS P\u00e1ra-raios"},"content":{"rendered":"
Terms such as \"dispositivo de prote\u00e7\u00e3o contra surtos (SPD)<\/a>,\" \"surge protector,\" and \"surge arrester\" are often used interchangeably in the market, causing confusion for users when selecting a device.<\/div>\r\n
This article will delve into the differences and connections between these three terms and provide a detailed selection guide to help you choose the most suitable \"surge protector\" for your application scenario.<\/div>\r\n \r\n

Dispositivo de prote\u00e7\u00e3o contra surtos vs. Protetor contra surtos vs. P\u00e1ra-raios<\/h2>\r\n
Embora todos os tr\u00eas termos visem fornecer prote\u00e7\u00e3o contra surtos, eles apresentam diferen\u00e7as sutis, mas cruciais, em defini\u00e7\u00f5es t\u00e9cnicas, cen\u00e1rios de aplica\u00e7\u00e3o e especifica\u00e7\u00f5es padr\u00e3o.<\/div>\r\n \r\n

Conceito<\/h3>\r\n

Dispositivo de prote\u00e7\u00e3o contra surtos (SPD)<\/strong><\/h4>\r\n
Este \u00e9 um termo padr\u00e3o e profissional, originado dos padr\u00f5es da Comiss\u00e3o Eletrot\u00e9cnica Internacional (IEC) (como IEC 61643-11). \u00c9 uma categoria completa de produtos em conformidade com normas espec\u00edficas, referentes a dispositivos el\u00e9tricos utilizados para limitar sobretens\u00f5es transit\u00f3rias e descarga de correntes de partida, que devem conter pelo menos um elemento n\u00e3o linear.<\/div>\r\n
\"BR-40VG<\/a><\/div>\r\n
<\/div>\r\n
Caracter\u00edsticas: SPD \u00e9 um termo de engenharia que enfatiza sua conformidade com padr\u00f5es internacionais e possui par\u00e2metros de desempenho claramente definidos (como Up, In, Iimp, etc.). \u00c9 um termo padr\u00e3o usado em projetos de engenharia el\u00e9trica.<\/div>\r\n \r\n

Protetor contra surtos<\/strong><\/h4>\r\n
Este \u00e9 um termo mais coloquial e comercial, especialmente utilizado no mercado norte-americano. Normalmente se refere a produtos de prote\u00e7\u00e3o em n\u00edvel de dispositivo final, mais comumente filtros de linha com tomadas m\u00faltiplas.<\/div>\r\n
Caracter\u00edsticas: Pertence \u00e0 categoria SPD (Suprimento, Prote\u00e7\u00e3o e Distribui\u00e7\u00e3o), mas geralmente se refere a produtos com n\u00edveis de prote\u00e7\u00e3o mais baixos (como o Tipo 3). Este termo est\u00e1 mais focado no mercado consumidor e na comunica\u00e7\u00e3o de massa.<\/div>\r\n \r\n

P\u00e1ra-raios<\/strong><\/h4>\r\n
Este \u00e9 um termo tradicional e espec\u00edfico, originalmente usado principalmente em sistemas de transmiss\u00e3o e distribui\u00e7\u00e3o de energia, como prote\u00e7\u00e3o de subesta\u00e7\u00f5es e linhas a\u00e9reas contra descargas atmosf\u00e9ricas diretas ou sobretens\u00f5es induzidas por raios. No campo de baixa tens\u00e3o, \u00e0s vezes se refere especificamente aos SPDs Tipo 1, que s\u00e3o dispositivos de prote\u00e7\u00e3o capazes de suportar uma por\u00e7\u00e3o de corrente direta de raios com forte capacidade de descarga.<\/div>\r\n
Caracter\u00edsticas: Enfatiza sua poderosa capacidade de descarga para lidar com os surtos de corrente mais severos. Em sistemas modernos de prote\u00e7\u00e3o contra surtos de edif\u00edcios, \u00e9 considerado um tipo de SPD de alto n\u00edvel.<\/div>\r\n \r\n
Resumo dos relacionamentos:<\/strong> Conceitualmente, SPD \u00e9 um termo geral que abrange todos os produtos de prote\u00e7\u00e3o contra surtos em conformidade com os padr\u00f5es. O protetor contra surtos \u00e9 normalmente um subconjunto de SPDs usados \u200b\u200bno mercado consumidor, enquanto o p\u00e1ra-raios pode ser considerado um tipo espec\u00edfico de SPD para aplica\u00e7\u00f5es de alta tens\u00e3o ou alta intensidade.<\/div>\r\n \r\n

Nome chin\u00eas<\/h3>\r\n
Dispositivo de prote\u00e7\u00e3o contra surtos (SPD): protetor contra surtos (o termo de engenharia chin\u00eas mais padr\u00e3o)<\/div>\r\n
Protetor contra surtos: protetor contra surtos \/ soquete de prote\u00e7\u00e3o contra surtos (mais coloquial e comercial)<\/div>\r\n
P\u00e1ra-raios: Descarregador de surtos \/ P\u00e1ra-raios (termo tradicional de engenharia el\u00e9trica)<\/div>\r\n \r\n

Local de instala\u00e7\u00e3o<\/h3>\r\n
SPD (Type 1\/2): Installed at critical nodes in the power distribution system, such as the building's main distribution cabinet or floor distribution boxes.<\/div>\r\n
Protetor contra surtos (Tipo 3): Instalado na parte frontal do dispositivo, diretamente conectado a uma tomada de parede, fornecendo prote\u00e7\u00e3o fina para dispositivos terminais (como computadores e televisores).<\/div>\r\n
P\u00e1ra-raios (Tipo 1): Instalado no ponto de entrada de servi\u00e7o, ou seja, no gabinete de distribui\u00e7\u00e3o principal, como primeira linha de defesa.<\/div>\r\n \r\n

N\u00edvel de prote\u00e7\u00e3o<\/h3>\r\n
SPD: Abrange todos os n\u00edveis (Tipo 1, 2, 3), fornecendo prote\u00e7\u00e3o abrangente e em n\u00edveis.<\/div>\r\n
Protetor contra surtos: normalmente representa o Tipo 3, fornecendo prote\u00e7\u00e3o contra sobretens\u00e3o definitiva.<\/div>\r\n
P\u00e1ra-raios: Normalmente representa o Tipo 1, fornecendo o mais alto n\u00edvel de prote\u00e7\u00e3o grosseira.<\/div>\r\n \r\n

Resposta a surtos<\/h3>\r\n
SPD (Tipo 1\/2): Velocidade de resposta r\u00e1pida (n\u00edvel de nanossegundos), utilizando tecnologias como varistores (MOV) ou tubos de descarga de g\u00e1s (GDT).<\/div>\r\n
Protetor contra surtos (Tipo 3): Tamb\u00e9m com velocidade de resposta r\u00e1pida, mas com menor capacidade de corrente.<\/div>\r\n
P\u00e1ra-raios (Tipo 1): Pode suportar grandes surtos de corrente el\u00e9trica, normalmente usando tecnologia de centelhador.<\/div>\r\n \r\n

Capacidade de descarga<\/h3>\r\n
P\u00e1ra-raios (SPD Tipo 1): Mais alto (at\u00e9 100kA ou mais, forma de onda 10\/350\u00b5s).<\/div>\r\n
SPD (Type 2): Medium (typically 20kA - 80kA, 8\/20\u00b5s waveform).<\/div>\r\n
Protetor contra surtos (Tipo 3): Mais baixo (normalmente abaixo de 20kA, forma de onda de 8\/20\u00b5s).<\/div>\r\n \r\n

Conex\u00f5es principais<\/h3>\r\n
SPD \/ P\u00e1ra-raios Tipo 1: Normalmente usa um centelhador, oferecendo alta capacidade de condu\u00e7\u00e3o de corrente e capacidade de extin\u00e7\u00e3o de arco.<\/div>\r\n
SPD tipo 2: normalmente usa um varistor (MOV) ou uma combina\u00e7\u00e3o de MOV e GDT.<\/div>\r\n
SPD \/ Protetor Tipo 3: Normalmente usa um MOV ou diodo de avalanche.<\/div>\r\n \r\n

\u00c1reas de aplica\u00e7\u00e3o<\/h3>\r\n
P\u00e1ra-raios \/ SPD Tipo 1: Sistema de distribui\u00e7\u00e3o de energia na linha principal de alimenta\u00e7\u00e3o de um edif\u00edcio e em \u00e1reas de alto risco de descargas atmosf\u00e9ricas.<\/div>\r\n
SPD (Tipo 2): Caixas de distribui\u00e7\u00e3o, gabinetes de controle industrial e salas de equipamentos de comunica\u00e7\u00e3o dentro de edif\u00edcios.<\/div>\r\n
Protetor contra surtos (Tipo 3): Dispositivos eletr\u00f4nicos sens\u00edveis em resid\u00eancias e escrit\u00f3rios, como computadores, aparelhos de som, smart TVs e roteadores.<\/div>\r\n \r\n

An\u00e1lise aprofundada: n\u00edveis de prote\u00e7\u00e3o (Tipo 1, 2 e 3 Spds)<\/h2>\r\n
A robust surge protection system should employ a tiered (or \"cooperative\") strategy.<\/div>\r\n
\"Dispositivo<\/a><\/div>\r\n
<\/div>\r\n
SPD Tipo 1 (Prote\u00e7\u00e3o Grosseira):<\/strong><\/div>\r\n
Objetivo: Descarregar grandes descargas atmosf\u00e9ricas diretas ou correntes induzidas por raios (forma de onda 10\/350\u00b5s).<\/div>\r\n
Local de instala\u00e7\u00e3o: Arm\u00e1rio de distribui\u00e7\u00e3o principal.<\/div>\r\n
Par\u00e2metros principais: Iimp (corrente de impulso).<\/div>\r\n
SPD Tipo 2 (Prote\u00e7\u00e3o Intermedi\u00e1ria):<\/strong><\/div>\r\n
Objetivo: Limitar ainda mais a sobretens\u00e3o residual ap\u00f3s SPD Tipo 1 e lidar com surtos causados \u200b\u200bpor opera\u00e7\u00f5es de comuta\u00e7\u00e3o, etc.<\/div>\r\n
Local de instala\u00e7\u00e3o: Caixa de distribui\u00e7\u00e3o.<\/div>\r\n
Par\u00e2metros principais: In (corrente de descarga nominal), Up (n\u00edvel de prote\u00e7\u00e3o de tens\u00e3o).<\/div>\r\n
Tipo 3 SPD (Prote\u00e7\u00e3o Fina):<\/strong><\/div>\r\n
Objetivo: Fornecer prote\u00e7\u00e3o final de tens\u00e3o residual mais baixa para os equipamentos eletr\u00f4nicos mais sens\u00edveis.<\/div>\r\n
Local de instala\u00e7\u00e3o: Parte frontal do equipamento, o mais pr\u00f3ximo poss\u00edvel do equipamento protegido (normalmente <10 metros).<\/div>\r\n
Par\u00e2metros principais: Up (n\u00edvel de prote\u00e7\u00e3o de tens\u00e3o), Uoc (tens\u00e3o de circuito aberto).<\/div>\r\n \r\n

Como escolher<\/h2>\r\n

Recomenda\u00e7\u00f5es Espec\u00edficas ao Cen\u00e1rio<\/h3>\r\n
Usu\u00e1rios residenciais:<\/strong><\/div>\r\n
B\u00e1sico: Instale um SPD Tipo 2 na caixa de distribui\u00e7\u00e3o principal.<\/div>\r\n
Padr\u00e3o: Instale um SPD Tipo 2 na caixa de distribui\u00e7\u00e3o principal e equipe aparelhos valiosos (como computadores e televisores) com filtros de linha protetores contra surtos Tipo 3.<\/div>\r\n
Avan\u00e7ado (Villas, \u00c1reas de Rel\u00e2mpago de Alta Velocidade): Instale um SPD Tipo 1 na linha de entrada principal, instale SPDs Tipo 2 nas caixas de distribui\u00e7\u00e3o em cada andar e use filtros de linha Tipo 3 para terminais.<\/div>\r\n
Edif\u00edcios Comerciais\/Data Centers:<\/strong><\/div>\r\n
Instale um SPD Tipo 1 na sala de distribui\u00e7\u00e3o principal.<\/div>\r\n
Instale SPDs Tipo 2 nas caixas de distribui\u00e7\u00e3o e nos gabinetes da sala de servidores em cada andar.<\/div>\r\n
Instale SPDs Tipo 3 dedicados ou SPDs montados em rack na frente de servidores, switches de rede e dispositivos de armazenamento.<\/div>\r\n
Ambientes Industriais:<\/strong><\/div>\r\n
Instale um SPD Tipo 1\/2 no gabinete da linha de entrada principal.<\/div>\r\n
Instale SPDs Tipo 2 na frente de cada gabinete de controle, gabinete de CLP e conversor de frequ\u00eancia.<\/div>\r\n \r\n

Principais par\u00e2metros de desempenho<\/h3>\r\n\"Tipo<\/a>\r\n
Ao selecionar um SPD, preste aten\u00e7\u00e3o aos seguintes par\u00e2metros principais:<\/div>\r\n
Uc (Tens\u00e3o M\u00e1xima de Opera\u00e7\u00e3o Cont\u00ednua)<\/strong><\/div>\r\n
O SPD deve ser capaz de suportar a tens\u00e3o m\u00e1xima CA ou CC por longos per\u00edodos sem partida. Esta tens\u00e3o deve ser superior \u00e0 tens\u00e3o nominal da rede el\u00e9trica local. Por exemplo, numa \u00e1rea de 230 V, Uc deve ser de pelo menos 275 V ou superior.<\/div>\r\n \r\n
Iimp (corrente de impacto)<\/strong><\/div>\r\n
Para SPDs Tipo 1, isso indica o pico m\u00e1ximo de corrente de descarga atmosf\u00e9rica que pode suportar com uma forma de onda de 10\/350\u00b5s. Quanto maior o valor, maior ser\u00e1 a resist\u00eancia \u00e0 queda direta de raios.<\/div>\r\n \r\n
Uoc (tens\u00e3o de circuito aberto)<\/strong><\/div>\r\n
Usado principalmente para testar e definir o desempenho de DPS Tipo 3, representa a forma de onda da tens\u00e3o de teste aplicada ao DPS.<\/div>\r\n \r\n
Acima (n\u00edvel de prote\u00e7\u00e3o de tens\u00e3o)<\/strong><\/div>\r\n
Este \u00e9 um dos par\u00e2metros mais importantes, representando a tens\u00e3o residual no SPD ap\u00f3s seu disparo. O valor Up deve ser inferior ao n\u00edvel de tens\u00e3o suport\u00e1vel do equipamento protegido. Quanto menor o valor, melhor ser\u00e1 o efeito de prote\u00e7\u00e3o.<\/div>\r\n \r\n
In (corrente de descarga nominal)<\/strong><\/div>\r\n
Para SPDs Tipo 2, isso indica que ele pode suportar 15 surtos de corrente de pico de uma forma de onda de 8\/20 \u00b5s. \u00c9 um indicador chave da capacidade de descarga de um SPD Tipo 2.<\/div>\r\n \r\n

Conclus\u00e3o<\/h2>\r\n
Dispositivo de prote\u00e7\u00e3o contra surtos (SPD) \u00e9 um termo t\u00e9cnico abrangente, enquanto protetor contra surtos e p\u00e1ra-raios s\u00e3o express\u00f5es espec\u00edficas dele em diferentes contextos e n\u00edveis de aplica\u00e7\u00e3o.<\/div>","protected":false},"featured_media":1743,"parent":0,"menu_order":108,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2229","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"Surge Protection Device (SPD) is a comprehensive technical term, while Surge Protector and Surge Arrester are specific expressions of it in different contexts and application levels.","txt":"
Terms such as \"surge protection device (SPD)<\/a>,\" \"surge protector,\" and \"surge arrester\" are often used interchangeably in the market, causing confusion for users when selecting a device.<\/div>\r\n
This article will delve into the differences and connections between these three terms and provide a detailed selection guide to help you choose the most suitable \"surge protector\" for your application scenario.<\/div>\r\n \r\n

Surge Protection Device Vs. Surge Protector Vs. Surge Arrester<\/h2>\r\n
Although all three terms aim to provide surge protection, they have subtle but crucial differences in technical definitions, application scenarios, and standard specifications.<\/div>\r\n \r\n

Concept<\/h3>\r\n

Surge Protection Device (SPD)<\/strong><\/h4>\r\n
This is a standard and professional term, originating from International Electrotechnical Commission (IEC) standards (such as IEC 61643-11). It is a complete category of products conforming to specific standards, referring to electrical devices used to limit transient overvoltages and discharge inrush currents, which must contain at least one nonlinear element.<\/div>\r\n
\"BR-40VG<\/a><\/div>\r\n
<\/div>\r\n
Characteristics: SPD is an engineering term emphasizing its compliance with international standards and having clearly defined performance parameters (such as Up, In, Iimp, etc.). It is a standard term used in electrical engineering design.<\/div>\r\n \r\n

Surge Protector<\/strong><\/h4>\r\n
This is a more colloquial and commercial term, especially widely used in the North American market. It typically refers to end-device level protection products, most commonly power strips with multi-outlet sockets.<\/div>\r\n
Characteristics: It belongs to the SPD (Supply, Protection, and Distribution) category, but usually refers to products with lower protection levels (such as Type 3). This term is more focused on the consumer market and mass communication.<\/div>\r\n \r\n

Surge Arrester<\/strong><\/h4>\r\n
This is a traditional and specific term, originally used primarily in power transmission and distribution systems, such as protecting substations and overhead lines from direct lightning strikes or induced lightning overvoltages. In the low-voltage field, it sometimes specifically refers to Type 1 SPDs, which are protective devices capable of withstanding a portion of direct lightning current with a strong discharge capability.<\/div>\r\n
Features: Emphasizes its powerful discharge capability to cope with the most severe lightning current surges. In modern building surge protection systems, it is considered a high-level type of SPD.<\/div>\r\n \r\n
Summary of relationships:<\/strong> Conceptually, SPD is a general term encompassing all standard-compliant surge protection products. Surge Protector is typically a subset of SPDs used in the consumer market, while Surge Arrester can be considered a specific type of SPD for high-voltage or high-intensity applications.<\/div>\r\n \r\n

Chinese Name<\/h3>\r\n
Surge Protection Device (SPD): Surge protector (the most standard Chinese engineering term)<\/div>\r\n
Surge Protector: Surge protector \/ Surge protection socket (more colloquial and commercial)<\/div>\r\n
Surge Arrester: Surge discharger \/ Lightning arrester (traditional electrical engineering term)<\/div>\r\n \r\n

Installation Location<\/h3>\r\n
SPD (Type 1\/2): Installed at critical nodes in the power distribution system, such as the building's main distribution cabinet or floor distribution boxes.<\/div>\r\n
Surge Protector (Type 3): Installed at the front end of the device, directly plugged into a wall socket, providing fine protection for terminal devices (such as computers and televisions).<\/div>\r\n
Surge Arrester (Type 1): Installed at the service entry point, i.e., the main distribution cabinet, as the first line of defense.<\/div>\r\n \r\n

Protection Level<\/h3>\r\n
SPD: Covers all levels (Type 1, 2, 3), providing comprehensive, tiered protection.<\/div>\r\n
Surge Protector: Typically represents Type 3, providing ultimate lean protection.<\/div>\r\n
Surge Arrester: Typically represents Type 1, providing the highest level of coarse protection.<\/div>\r\n \r\n

Surge Response<\/h3>\r\n
SPD (Type 1\/2): Fast response speed (nanosecond level), using technologies such as varistors (MOV) or gas discharge tubes (GDT).<\/div>\r\n
Surge Protector (Type 3): Also fast response speed, but with smaller current capacity.<\/div>\r\n
Surge Arrester (Type 1): Can withstand huge lightning current surges, typically using spark gap technology.<\/div>\r\n \r\n

Discharge Capacity<\/h3>\r\n
Surge Arrester (Type 1 SPD): Highest (up to 100kA or more, 10\/350\u00b5s waveform).<\/div>\r\n
SPD (Type 2): Medium (typically 20kA - 80kA, 8\/20\u00b5s waveform).<\/div>\r\n
Surge Protector (Type 3): Lowest (typically below 20kA, 8\/20\u00b5s waveform).<\/div>\r\n \r\n

Core Connections<\/h3>\r\n
Type 1 SPD \/ Arrester: Typically uses a spark gap, offering high current carrying capacity and arc extinguishing capability.<\/div>\r\n
Type 2 SPD: Typically uses a varistor (MOV), or a combination of MOV and GDT.<\/div>\r\n
Type 3 SPD \/ Protector: Typically uses an MOV or avalanche diode.<\/div>\r\n \r\n

Application Areas<\/h3>\r\n
Surge Arrester \/ Type 1 SPD: Power distribution system at the main power supply line of a building and in high-risk lightning areas.<\/div>\r\n
SPD (Type 2): Distribution boxes, industrial control cabinets, and communication equipment rooms within buildings.<\/div>\r\n
Surge Protector (Type 3): Sensitive electronic devices in homes and offices, such as computers, stereos, smart TVs, and routers.<\/div>\r\n \r\n

In-Depth Analysis: Protection Levels (Type 1, 2, And 3 Spds)<\/h2>\r\n
A robust surge protection system should employ a tiered (or \"cooperative\") strategy.<\/div>\r\n
\"BR-30FU<\/a><\/div>\r\n
<\/div>\r\n
Type 1 SPD (Coarse Protection):<\/strong><\/div>\r\n
Objective: To discharge large direct lightning strikes or induced lightning currents (10\/350\u00b5s waveform).<\/div>\r\n
Installation Location: Main distribution cabinet.<\/div>\r\n
Key Parameters: Iimp (Impulse Current).<\/div>\r\n
Type 2 SPD (Intermediate Protection):<\/strong><\/div>\r\n
Objective: To further limit residual overvoltage after Type 1 SPD and handle surges caused by switching operations, etc.<\/div>\r\n
Installation Location: Distribution box.<\/div>\r\n
Key Parameters: In (Rated Discharge Current), Up (Voltage Protection Level).<\/div>\r\n
Type 3 SPD (Fine Protection):<\/strong><\/div>\r\n
Objective: To provide final, lowest residual voltage protection for the most sensitive electronic equipment.<\/div>\r\n
Installation Location: Front end of the equipment, as close as possible to the protected equipment (typically <10 meters).<\/div>\r\n
Key Parameters: Up (Voltage Protection Level), Uoc (Open Circuit Voltage).<\/div>\r\n \r\n

How To Choose<\/h2>\r\n

Scenario-Specific Recommendations<\/h3>\r\n
Residential Users:<\/strong><\/div>\r\n
Basic: Install one Type 2 SPD in the main switch box.<\/div>\r\n
Standard: Install a Type 2 SPD in the main switch box and equip valuable appliances (such as computers and televisions) with Type 3 Surge Protector power strips.<\/div>\r\n
Advanced (Villas, High-Speed \u200b\u200bLightning Areas): Install a Type 1 SPD at the main incoming line, install Type 2 SPDs in the distribution boxes on each floor, and use Type 3 power strips for terminals.<\/div>\r\n
Commercial Buildings\/Data Centers:<\/strong><\/div>\r\n
Install a Type 1 SPD in the main distribution room.<\/div>\r\n
Install Type 2 SPDs in the distribution boxes and server room cabinets on each floor.<\/div>\r\n
Install dedicated Type 3 SPDs or rack-mounted SPDs in front of servers, network switches, and storage devices.<\/div>\r\n
Industrial Environments:<\/strong><\/div>\r\n
Install a Type 1\/2 SPD in the main incoming line cabinet.<\/div>\r\n
Install Type 2 SPDs in front of each control cabinet, PLC cabinet, and frequency converter.<\/div>\r\n \r\n

Key Performance Parameters<\/h3>\r\n\"BR-30FU<\/a>\r\n
When selecting an SPD, be sure to pay attention to the following key parameters:<\/div>\r\n
Uc (Maximum Continuous Operating Voltage)<\/strong><\/div>\r\n
The SPD must be able to withstand the maximum AC or DC voltage for extended periods without starting. This voltage must be higher than the nominal voltage of the local power grid. For example, in a 230V area, Uc should be at least 275V or higher.<\/div>\r\n \r\n
Iimp (Impact Current)<\/strong><\/div>\r\n
For Type 1 SPDs, this indicates the maximum peak lightning current it can withstand with a 10\/350\u00b5s waveform. The higher the value, the stronger its resistance to direct lightning strikes.<\/div>\r\n \r\n
Uoc (Open Circuit Voltage)<\/strong><\/div>\r\n
Primarily used for testing and defining the performance of Type 3 SPDs, it represents the waveform of the test voltage applied to the SPD.<\/div>\r\n \r\n
Up (Voltage Protection Level)<\/strong><\/div>\r\n
This is one of the most important parameters, representing the residual voltage across the SPD after it trips. The Up value must be lower than the withstand voltage level of the protected equipment. The lower the value, the better the protection effect.<\/div>\r\n \r\n
In (Nominal Discharge Current)<\/strong><\/div>\r\n
For Type 2 SPDs, this indicates that it can withstand 15 peak current surges from an 8\/20\u00b5s waveform. It is a key indicator of the discharge capability of a Type 2 SPD.<\/div>\r\n \r\n

Conclusion<\/h2>\r\n
Surge Protection Device (SPD) is a comprehensive technical term, while Surge Protector and Surge Arrester are specific expressions of it in different contexts and application levels.<\/div>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/blog\/2229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/media\/1743"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/media?parent=2229"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/blog_category?post=2229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}