{"id":2241,"date":"2025-11-19T14:11:15","date_gmt":"2025-11-19T06:11:15","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=2241"},"modified":"2025-11-19T15:12:37","modified_gmt":"2025-11-19T07:12:37","slug":"type-1-surge-protection-device-vs-type-2-spd","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/pt\/blog\/type-1-surge-protection-device-vs-type-2-spd\/","title":{"rendered":"Dispositivo de prote\u00e7\u00e3o contra surtos tipo 1 VS SPD tipo 2"},"content":{"rendered":"In modern electrical systems, surge protectors (SPDs) are critical devices for protecting against damage from lightning strikes and switch surges. However, many people are confused by the different types, such as Type 1 and Type 2\u00a0surge protection device.\r\n\r\nWhat Is the difference between Type 1 and Type 2 SPD?This article will provide an in-depth comparison of Dispositivo de prote\u00e7\u00e3o contra surtos tipo 1<\/strong><\/a> e SPDs Tipo 2 para ajud\u00e1-lo a entender suas diferen\u00e7as, cen\u00e1rios de aplica\u00e7\u00e3o e fazer a escolha certa.\r\n\r\n \r\n

2. Dispositivo de prote\u00e7\u00e3o contra surtos tipo 1 versus SPD tipo 2<\/h2>\r\nSurge protectors (SPDs) are the \"safety valves\" of electrical systems. Type 1 and Type 2 are the two most commonly used SPDs. They each have their own functions and work together to build a complete protection system.\r\n

2.1 Fun\u00e7\u00e3o principal do SPD Tipo 1 e Tipo 2<\/h2>\r\n\"Dispositivo<\/a>\r\n
SPD Tipo 1 (Dispositivo de Descarga de Raios):<\/strong><\/div>\r\n
Fun\u00e7\u00e3o principal: Fornece prote\u00e7\u00e3o contra descargas atmosf\u00e9ricas diretas ou correntes parciais de raios. Geralmente colocado no ponto de entrada principal de um edif\u00edcio, proporciona prote\u00e7\u00e3o de primeiro n\u00edvel (b\u00e1sica).<\/div>\r\n
Tarefa principal: Lidar e redirecionar grandes correntes de raios para impedir danos a equipamentos e linhas a jusante.<\/div>\r\n
<\/div>\r\n
SPD Tipo 2 (Dispositivo de Controle de Press\u00e3o):<\/strong><\/div>\r\n
Fun\u00e7\u00e3o principal: Usado para prote\u00e7\u00e3o contra surtos de opera\u00e7\u00e3o de interruptores e surtos residuais de descargas atmosf\u00e9ricas induzidas. Normalmente \u00e9 instalado em caixas de distribui\u00e7\u00e3o (como caixas de distribui\u00e7\u00e3o de piso) e fornece prote\u00e7\u00e3o de segundo n\u00edvel (prote\u00e7\u00e3o intermedi\u00e1ria).<\/div>\r\n
Tarefa principal: Limita a tens\u00e3o residual a um n\u00edvel seguro para equipamentos terminais, servindo como prote\u00e7\u00e3o prim\u00e1ria para equipamentos eletr\u00f4nicos sens\u00edveis.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.2 Principais Par\u00e2metros de Teste<\/h2>\r\n
Tipo 1 SPD Monof\u00e1sico:<\/strong><\/div>\r\n
Impulse Current (I<sub>imp<\/sub>): The most critical parameter. It indicates the SPD's ability to withstand a typical lightning current, including peak current (10\/350\u03bcs waveform), charge quantity, and other comprehensive requirements. For example: 25 kA (10\/350\u03bcs).<\/div>\r\n
<\/div>\r\n
\"Dispositivo<\/a><\/div>\r\n
DPS tipo 2:<\/strong><\/div>\r\n
Corrente de descarga nominal (In<\/sub>): O par\u00e2metro principal. Indica a corrente de teste padr\u00e3o (forma de onda de 8\/20 \u03bcs) que o SPD pode suportar v\u00e1rias vezes. Por exemplo: 20 kA (8\/20\u03bcs).<\/div>\r\n
Corrente M\u00e1xima de Descarga (Imax<\/sub>): Indica a corrente de descarga m\u00e1xima (forma de onda 8\/20\u03bcs) que o SPD pode suportar em uma \u00fanica opera\u00e7\u00e3o.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.3 Testar formas de onda<\/h2>\r\n10\/350\u03bcs waveform (for Type 1 testing): This waveform simulates some of the current characteristics of a direct lightning strike. Its current rise is slow, but its duration is long, carrying approximately 20 times the energy of the 8\/20\u03bcs waveform, making it extremely destructive.\r\n\r\n8\/20\u03bcs waveform (for Type 2 testing): This waveform simulates induced lightning and switching surges. The current rises quickly, its duration is short, and its energy is relatively small.\r\n\r\n \r\n

2.4 Local de Instala\u00e7\u00e3o<\/h2>\r\nType 1 lightning surge protection device: Installed in the building's main distribution panel (main incoming line box), located after the electricity meter and before or after the main circuit breaker (depending on product design).\r\n\r\nType 2 SPD: Installed in distribution panels, such as floor distribution boxes or distribution boxes in critical equipment rooms (e.g., data centers, elevator control rooms).\r\n\r\n \r\n

2.5 Rela\u00e7\u00e3o do Sistema Externo de Prote\u00e7\u00e3o contra Surtos<\/h2>\r\nType 1 SPD: Must be installed at the power inlet of buildings equipped with external lightning protection systems (lightning rods, down conductors). This is a mandatory requirement of international standards (such as IEC 62305) because it effectively handles direct lightning current coupled from the down conductor to the power line.\r\n\r\nType 2 SPD: Not directly mandatory with external lightning protection systems. Type 2 SPDs are required to handle induced surges regardless of whether the building has an external lightning protection system.\r\n\r\n \r\n

2.6 Coordena\u00e7\u00e3o<\/h2>\r\nOs SPDs Tipo 1 e Tipo 2 precisam trabalhar juntos. Uma certa dist\u00e2ncia de linha deve ser mantida entre eles (geralmente recomendado que seja de pelo menos 10 metros), ou dispositivos de desacoplamento (como reatores dedicados) devem ser usados \u200b\u200bpara garantir que, no caso de um surto, o SPD Tipo 1 dispare primeiro para dissipar a maior parte da energia e, em seguida, o SPD Tipo 2 dispare para limitar a tens\u00e3o residual a um n\u00edvel mais baixo. Se a dist\u00e2ncia for insuficiente, uma grande sobretens\u00e3o poder\u00e1 ignorar o Tipo 1 e danificar o Tipo 2.\r\n\r\n \r\n

Preciso de SPD tipo 1 ou tipo 2?<\/h2>\r\nEste \u00e9 um processo de tomada de decis\u00e3o para ajud\u00e1-lo a fazer uma escolha:\r\n

O edif\u00edcio possui sistema externo de prote\u00e7\u00e3o contra surtos?<\/strong><\/h3>\r\nYes: You must install a Type 1 SPD in the main distribution box.\r\n\r\nNo\/Unsure: You can skip Type 1, but installing Type 2 is strongly recommended.\r\n

Avalia\u00e7\u00e3o de risco de surto na linha de energia de entrada<\/strong><\/h3>\r\nMesmo sem um sistema externo de prote\u00e7\u00e3o contra raios, se o seu pr\u00e9dio estiver localizado em uma \u00e1rea aberta, no topo de uma colina ou tiver longas linhas a\u00e9reas de energia, o risco de queda de raios \u00e9 alto. A instala\u00e7\u00e3o de um SPD Tipo 1 pode fornecer um n\u00edvel mais alto de prote\u00e7\u00e3o.\r\n

Decidir a sele\u00e7\u00e3o<\/strong><\/h3>\r\nScenario A (Standard residential building, no external lightning protection): Installing a Type 2 SPD in the main distribution box provides sufficient protection.\r\n\r\nScenario B (Villa\/commercial building with lightning rod): A Type 1 SPD must be installed in the main distribution box, and Type 2 SPDs must be installed in floor distribution boxes or distribution boxes for critical equipment.\r\n\r\nScenario C (Risk compromise): If space or budget is limited, a Type 1+2 combined SPD can be installed in the main distribution box (see FAQ).\r\n

Conceito de prote\u00e7\u00e3o graduada (coordenada)<\/h2>\r\n

Por que a prote\u00e7\u00e3o graduada \u00e9 necess\u00e1ria?<\/h3>\r\nNo single SPD can perfectly handle all types of surges. The concept of tiered protection is:\r\n\r\nType 1 (Level 1): Intercepts and discharges the vast majority of the enormous energy (e.g., 90%) at the inlet.\r\n\r\nType 2 (Level 2): \u200b\u200bFurther limits the residual surge voltage after the first level, bringing it within the equipment's safe range.\r\n\r\nType 3 (Fine Protection): Uses surge strips at the equipment end to provide fine protection for the last mile.\r\n\r\nThis is like a line of defense: the first line weakens the main force, the second line clears the residue, and ensures the safety of the main base (your equipment).\r\n

Esquema T\u00edpico de Prote\u00e7\u00e3o Graduada<\/h3>\r\nA complete solution is as follows:\r\n\r\nLevel I: Main Distribution Box \u2192 Type 1 SPD\r\n\r\nLevel II: Floor Distribution Box \u2192 Type 2 SPD\r\n\r\nLevel III: Equipment Front-End (e.g., sockets) \u2192 Type 3 SPD (surge power strip)\r\n

Perguntas frequentes<\/h2>\r\nPosso instalar SPD monof\u00e1sico tipo 1 e tipo 2?<\/strong>\r\n\r\nAbsolutely, and it's best practice. Type 1 and Type 2 single phase SPDs work together to provide tiered protection from the inlet to the device.\r\n\r\nDiferen\u00e7a entre Spd combinado tipo 1 + 2 e instal\u00e1-los separadamente<\/strong>\r\n
SPD Combinado Tipo 1+2: Um \u00fanico dispositivo integra m\u00f3dulos Tipo 1 e Tipo 2. Suas vantagens incluem economia de espa\u00e7o e f\u00e1cil instala\u00e7\u00e3o, tornando-o particularmente adequado para cen\u00e1rios com espa\u00e7o limitado na caixa de distribui\u00e7\u00e3o principal. Ele passou nos testes de coordena\u00e7\u00e3o para garantir a compatibilidade adequada do m\u00f3dulo.<\/div>\r\n
<\/div>\r\n
Instala\u00e7\u00e3o separada: Oferece m\u00e1xima flexibilidade e facilidade de manuten\u00e7\u00e3o. Se um m\u00f3dulo Tipo 1 estiver danificado, apenas o m\u00f3dulo Tipo 1 poder\u00e1 ser substitu\u00eddo sem afetar o m\u00f3dulo Tipo 2. No entanto, deve ser garantida uma dist\u00e2ncia suficiente entre eles ou deve ser utilizado um dispositivo de desacoplamento.<\/div>\r\n
<\/div>\r\nEu uso tiras de sobretens\u00e3o em minhas tomadas. Preciso instalar SPD tipo 2?<\/strong>\r\n\r\nAbsolutely necessary. Surge power strips (Type 3 SPDs) have limited discharge capabilities; they are designed to absorb very small residual surges at the device end. They cannot withstand major surge energy transmitted from the power line.\r\n\r\nWithout a Type 2 SPD dissipating energy at the pre-amplifier stage, a larger surge could directly destroy your surge power strip and connected devices. Type 2 SPDs are the mainstay in protecting the entire circuit branch.\r\n\r\n \r\n\r\nSPD monof\u00e1sico VS SPD trif\u00e1sico tipo 1<\/strong>\r\n\r\nOs SPDs monof\u00e1sicos s\u00e3o usados \u200b\u200bem sistemas de fonte de alimenta\u00e7\u00e3o monof\u00e1sicos (um fio energizado e um fio neutro), enquanto os SPDs trif\u00e1sicos Tipo 1 s\u00e3o usados \u200b\u200bem sistemas de fonte de alimenta\u00e7\u00e3o trif\u00e1sicos (tr\u00eas fios energizados e um fio neutro ou tr\u00eas fios energizados, um fio neutro e um fio terra), projetados para proteger todos os fios de fase contra impactos de surtos massivos, como quedas diretas de raios.\r\n

Conclus\u00e3o<\/h2>\r\n
SPD Tipo 1 versus Tipo 2? Escolher entre SPDs Tipo 1 e Tipo 2 n\u00e3o \u00e9 uma quest\u00e3o de ou, mas sim uma quest\u00e3o de como construir uma hierarquia eficaz de prote\u00e7\u00e3o contra raios.<\/div>\r\n
Type 1 SPDs are the \"heavy armor\" against direct lightning strikes and are the mandatory first choice for buildings with external lightning protection systems.<\/div>\r\n
Type 2 SPDs are the \"main force\" against everyday surges and are core protection equipment that almost all buildings should have installed.<\/div>\r\n
A estrat\u00e9gia mais segura e confi\u00e1vel \u00e9 seguir um princ\u00edpio de prote\u00e7\u00e3o em n\u00edveis: implantar o Tipo 1 nas entradas principais, o Tipo 2 nas caixas de distribui\u00e7\u00e3o e faixas de sobretens\u00e3o nos locais finais dos equipamentos. Atrav\u00e9s deste sistema de prote\u00e7\u00e3o em camadas, voc\u00ea pode fornecer a prote\u00e7\u00e3o mais abrangente para seus equipamentos el\u00e9tricos e propriedades.<\/div>","protected":false},"featured_media":2246,"parent":0,"menu_order":106,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2241","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"Comparison of Type 1 surge protection device and Type 2 SPD to help you understand their differences, application scenarios, and make the right choice.","txt":"In modern electrical systems, surge protectors (SPDs) are critical devices for protecting against damage from lightning strikes and switch surges. However, many people are confused by the different types, such as Type 1 and Type 2\u00a0surge protection device.\r\n\r\nWhat Is the difference between Type 1 and Type 2 SPD?This article will provide an in-depth comparison of Type 1 surge protection device<\/strong><\/a> and Type 2 SPDs to help you understand their differences, application scenarios, and make the right choice.\r\n\r\n \r\n

2. Type 1 Surge Protection Device Vs Type 2 SPD<\/h2>\r\nSurge protectors (SPDs) are the \"safety valves\" of electrical systems. Type 1 and Type 2 are the two most commonly used SPDs. They each have their own functions and work together to build a complete protection system.\r\n

2.1 Main function of Type 1 and Type 2 SPD<\/h2>\r\n\"BR-25M<\/a>\r\n
Type 1 SPD (Lightning Current Discharge Device):<\/strong><\/div>\r\n
Main Function: Provides protection from direct lightning strikes or partial lightning currents. Usually placed at the main entry point of a building, it gives first-level (basic) protection.<\/div>\r\n
Core Task: Handles and redirects large lightning currents to stop damage to equipment and lines downstream.<\/div>\r\n
<\/div>\r\n
Type 2 SPD (Pressure Control Device):<\/strong><\/div>\r\n
Main Function: Used for protection against surges from switch operation and residual surges from induced lightning strikes. It is typically installed in distribution boxes (such as floor distribution boxes) and provides second-level (intermediate protection).<\/div>\r\n
Core Task: Limits residual voltage to a safe level for terminal equipment, serving as the primary protection for sensitive electronic equipment.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.2 Main Test Parameters<\/h2>\r\n
Type 1 SPD Single Phase:<\/strong><\/div>\r\n
Impulse Current (I<sub>imp<\/sub>): The most critical parameter. It indicates the SPD's ability to withstand a typical lightning current, including peak current (10\/350\u03bcs waveform), charge quantity, and other comprehensive requirements. For example: 25 kA (10\/350\u03bcs).<\/div>\r\n
<\/div>\r\n
\"BR-20<\/a><\/div>\r\n
Type 2 SPD:<\/strong><\/div>\r\n
Nominal Discharge Current (I<sub>n<\/sub>): The core parameter. It indicates the standard test current (8\/20\u03bcs waveform) that the SPD can withstand multiple times. For example: 20 kA (8\/20\u03bcs).<\/div>\r\n
Maximum Discharge Current (I<sub>max<\/sub>): Indicates the maximum discharge current (8\/20\u03bcs waveform) that the SPD can withstand in a single operation.<\/div>\r\n
<\/div>\r\n
<\/div>\r\n
<\/div>\r\n

2.3 Test Waveforms<\/h2>\r\n10\/350\u03bcs waveform (for Type 1 testing): This waveform simulates some of the current characteristics of a direct lightning strike. Its current rise is slow, but its duration is long, carrying approximately 20 times the energy of the 8\/20\u03bcs waveform, making it extremely destructive.\r\n\r\n8\/20\u03bcs waveform (for Type 2 testing): This waveform simulates induced lightning and switching surges. The current rises quickly, its duration is short, and its energy is relatively small.\r\n\r\n \r\n

2.4 Installation Location<\/h2>\r\nType 1 lightning surge protection device: Installed in the building's main distribution panel (main incoming line box), located after the electricity meter and before or after the main circuit breaker (depending on product design).\r\n\r\nType 2 SPD: Installed in distribution panels, such as floor distribution boxes or distribution boxes in critical equipment rooms (e.g., data centers, elevator control rooms).\r\n\r\n \r\n

2.5 Reltation of External Surge Protection System<\/h2>\r\nType 1 SPD: Must be installed at the power inlet of buildings equipped with external lightning protection systems (lightning rods, down conductors). This is a mandatory requirement of international standards (such as IEC 62305) because it effectively handles direct lightning current coupled from the down conductor to the power line.\r\n\r\nType 2 SPD: Not directly mandatory with external lightning protection systems. Type 2 SPDs are required to handle induced surges regardless of whether the building has an external lightning protection system.\r\n\r\n \r\n

2.6 Coordination<\/h2>\r\nType 1 and Type 2 SPDs need to work together. A certain line distance must be maintained between them (generally recommended to be at least 10 meters), or decoupling devices (such as dedicated reactors) should be used to ensure that, in the event of a surge, the Type 1 SPD trips first to dissipate most of the energy, and then the Type 2 SPD trips to limit the residual voltage to a lower level. If the distance is insufficient, a large surge may bypass the Type 1 and damage the Type 2.\r\n\r\n \r\n

Do I Need Type 1 Or Type 2 SPD?<\/h2>\r\nThis is a decision-making process to help you make a choice:\r\n

Does The Building Have An External Surge Protection System?<\/strong><\/h3>\r\nYes: You must install a Type 1 SPD in the main distribution box.\r\n\r\nNo\/Unsure: You can skip Type 1, but installing Type 2 is strongly recommended.\r\n

Surge Risk Assessment At Incoming Power Line<\/strong><\/h3>\r\nEven without an external lightning protection system, if your building is located in an open area, on a hilltop, or has long overhead power lines, the risk of lightning strikes is high. Installing a Type 1 SPD can provide a higher level of protection.\r\n

Decide Selection<\/strong><\/h3>\r\nScenario A (Standard residential building, no external lightning protection): Installing a Type 2 SPD in the main distribution box provides sufficient protection.\r\n\r\nScenario B (Villa\/commercial building with lightning rod): A Type 1 SPD must be installed in the main distribution box, and Type 2 SPDs must be installed in floor distribution boxes or distribution boxes for critical equipment.\r\n\r\nScenario C (Risk compromise): If space or budget is limited, a Type 1+2 combined SPD can be installed in the main distribution box (see FAQ).\r\n

Concept Of Graded (Coordinated) Protection<\/h2>\r\n

Why Is Graded Protection Necessary?<\/h3>\r\nNo single SPD can perfectly handle all types of surges. The concept of tiered protection is:\r\n\r\nType 1 (Level 1): Intercepts and discharges the vast majority of the enormous energy (e.g., 90%) at the inlet.\r\n\r\nType 2 (Level 2): \u200b\u200bFurther limits the residual surge voltage after the first level, bringing it within the equipment's safe range.\r\n\r\nType 3 (Fine Protection): Uses surge strips at the equipment end to provide fine protection for the last mile.\r\n\r\nThis is like a line of defense: the first line weakens the main force, the second line clears the residue, and ensures the safety of the main base (your equipment).\r\n

Typical Graded Protection Scheme<\/h3>\r\nA complete solution is as follows:\r\n\r\nLevel I: Main Distribution Box \u2192 Type 1 SPD\r\n\r\nLevel II: Floor Distribution Box \u2192 Type 2 SPD\r\n\r\nLevel III: Equipment Front-End (e.g., sockets) \u2192 Type 3 SPD (surge power strip)\r\n

FAQ<\/h2>\r\nCan I Install Both Type 1 And Type 2 Single Phase SPD?<\/strong>\r\n\r\nAbsolutely, and it's best practice. Type 1 and Type 2 single phase SPDs work together to provide tiered protection from the inlet to the device.\r\n\r\nDifference Between Type 1+2 Combined Spd And Installing Them Separately<\/strong>\r\n
Type 1+2 Combined SPD: A single device integrates both Type 1 and Type 2 modules. Its advantages include space saving and easy installation, making it particularly suitable for scenarios with limited space in the main distribution box. It has passed coordination testing to ensure proper module compatibility.<\/div>\r\n
<\/div>\r\n
Separate Installation: Offers maximum flexibility and maintainability. If a Type 1 module is damaged, only the Type 1 module can be replaced without affecting the Type 2 module. However, sufficient distance must be ensured between them, or a decoupling device must be used.<\/div>\r\n
<\/div>\r\nI Use Surge Strips On My Outlets. Do I Need To Install Type 2 SPD?<\/strong>\r\n\r\nAbsolutely necessary. Surge power strips (Type 3 SPDs) have limited discharge capabilities; they are designed to absorb very small residual surges at the device end. They cannot withstand major surge energy transmitted from the power line.\r\n\r\nWithout a Type 2 SPD dissipating energy at the pre-amplifier stage, a larger surge could directly destroy your surge power strip and connected devices. Type 2 SPDs are the mainstay in protecting the entire circuit branch.\r\n\r\n \r\n\r\nSingle Phase SPD VS Three phase Type 1 SPD<\/strong>\r\n\r\nSingle-phase SPDs are used in single-phase power supply systems (one live wire and one neutral wire), while three-phase Type 1 SPDs are used in three-phase power supply systems (three live wires and one neutral wire or three live wires, one neutral wire, and one ground wire), designed to protect all phase wires from massive surge impacts such as direct lightning strikes.\r\n

Conclusion<\/h2>\r\n
SPD Type 1 Vs Type 2?Choosing between Type 1 and Type 2 SPDs is not an either-or question, but rather a question of how to build an effective lightning protection hierarchy.<\/div>\r\n
Type 1 SPDs are the \"heavy armor\" against direct lightning strikes and are the mandatory first choice for buildings with external lightning protection systems.<\/div>\r\n
Type 2 SPDs are the \"main force\" against everyday surges and are core protection equipment that almost all buildings should have installed.<\/div>\r\n
The safest and most reliable strategy is to follow a tiered protection principle: deploy Type 1 at main entrances, Type 2 at distribution boxes, and surge strips at final equipment locations. Through this layered protection system, you can provide the most comprehensive protection for your electrical equipment and property.<\/div>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/blog\/2241","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\/2246"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/media?parent=2241"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/blog_category?post=2241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}