{"id":825,"date":"2023-12-18T14:35:43","date_gmt":"2023-12-18T06:35:43","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=825"},"modified":"2024-09-05T16:31:35","modified_gmt":"2024-09-05T08:31:35","slug":"how-to-choose-surge-protection-devices","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/pt\/blog\/how-to-choose-surge-protection-devices\/","title":{"rendered":"Como escolher dispositivos de prote\u00e7\u00e3o contra surtos?"},"content":{"rendered":"Escolhendo protetores contra surtos<\/strong>\r\n\r\nBritec\u2019s line of AC power surge protectors is designed to cover all possible configurations in low voltage installations. They are available in many versions, which differ in:\r\n\r\n\u2013 Type or test class (1, 2 or 3)\r\n\r\n\u2013 Operating voltage (Uc)\r\n\r\n\u2013 AC network configuration (Single\/three-Phase)\r\n\r\n\u2013 Discharge currents (Iimp, In, Imax, Uoc)\r\n\r\n\u2013 Protection level (Up)\r\n\r\n\u2013 Protection technology (varistors, spark gap, filter)\r\n\r\n\u2013 Features (differential mode, plug-in, remote signaling, compact).\r\n\r\nThe surge protection selection must be done following the local electrical code requirements (e.g.: minimum rating for In) and specific conditions (e.g.: high lightning density).\r\n\r\nEscolhendo o tipo de protetores contra surtos<\/strong>\r\n\r\nO tipo de protetor contra surtos depende da sua localiza\u00e7\u00e3o e das restri\u00e7\u00f5es da instala\u00e7\u00e3o a ser protegida.\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Configura\u00e7\u00e3o<\/strong><\/td>\r\nSPD<\/strong><\/td>\r\nLocaliza\u00e7\u00e3o<\/strong><\/td>\r\nBRITEC<\/strong><\/td>\r\n<\/tr>\r\n
Instala\u00e7\u00e3o equipada com SPDA ou que possa ser atingida por um raio<\/td>\r\nType 1+2 \r\n\r\nType 1+2+3<\/td>\r\nOrigem da origem da instala\u00e7\u00e3o (Painel ou quadro principal)<\/td>\r\nBR-50GR \r\n\r\nBR-25GR\r\n\r\nBR-25M\r\n\r\nBR-12.5M<\/td>\r\n<\/tr>\r\n
Instala\u00e7\u00e3o sem LPS<\/td>\r\nType 2 \r\n\r\nType 2+3<\/td>\r\nquadro de distribui\u00e7\u00e3o principal<\/td>\r\nBR-40 \r\n\r\nBR-20<\/td>\r\n<\/tr>\r\n
Prote\u00e7\u00e3o secund\u00e1ria (SPD prim\u00e1rio downstream)<\/td>\r\nType 2 \r\n\r\n(or Type 3)<\/td>\r\nperto de equipamentos protegidos<\/td>\r\nBR-40DP \r\n\r\nBR-20DP<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nEscolha das tens\u00f5es operacionais Uc e UT<\/strong>\r\n\r\nThe SPD Uc voltage (maximum continuous operating voltage) depends on:\r\n\r\n\u2013 Nominal voltage of the AC network (Uo)\r\n\r\n\u2013 Type of AC system (TN, TT, IT).\r\n\r\nThe level of resistance to temporary overvoltage (UT) is related to the Uc voltage. In addition, withstanding the \u201chigh voltage\u201d TOV (1200 Vac, 300A, 200ms) between Neutral and PE is needed in TT AC system.\r\n\r\nTens\u00e3o operacional Uc (Linha\/Terra)<\/strong>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Rede CA<\/td>\r\n230\/400 V<\/td>\r\n120\/208V<\/td>\r\n<\/tr>\r\n
Sistema AC<\/td>\r\nTT<\/td>\r\nTN<\/td>\r\nISTO<\/td>\r\nTN<\/td>\r\n<\/tr>\r\n
Tens\u00e3o Uc mini<\/td>\r\n255 V<\/td>\r\n255 V<\/td>\r\n440 V<\/td>\r\n135V<\/td>\r\n<\/tr>\r\n
Tens\u00e3o UT<\/td>\r\n335\/440V<\/td>\r\n335\/440V<\/td>\r\n\u2014<\/td>\r\n230\/175V<\/td>\r\n<\/tr>\r\n
TOV N\/PE<\/td>\r\n1200V<\/td>\r\n<\/td>\r\n<\/td>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nEscolhendo Iimp<\/strong>\r\n\r\nA corrente de impulso Iimp \u00e9 definida para SPD Tipo 1. A classifica\u00e7\u00e3o m\u00ednima para Iimp \u00e9 12,5 kA por p\u00f3lo, seguindo IEC 60364-5-534. Este n\u00edvel \u00e9 adaptado ao fen\u00f4meno real. Este valor pode, no entanto, ser aumentado de acordo com o risco (c\u00e1lculo de acordo com EN 62305-1). A BRITEC prop\u00f5e, na sua gama SPD Tipo 1, 3 n\u00edveis de corrente Iimp por p\u00f3lo: 12,5kA, 25kA e 50 kA.\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Configura\u00e7\u00e3o<\/strong><\/td>\r\nIimp\/p\u00f3lo<\/strong><\/td>\r\nBRITEC<\/strong><\/td>\r\n<\/tr>\r\n
Risco m\u00e1ximo<\/td>\r\n50ka<\/td>\r\nBR-50GR<\/td>\r\n<\/tr>\r\n
Densidade de raios muito alta Aterramento ruim<\/td>\r\n25kA<\/td>\r\nBR-25GR \r\n\r\nBR-25M<\/td>\r\n<\/tr>\r\n
Densidade de raios alta, m\u00e9dia ou baixa<\/td>\r\n12,5kA<\/td>\r\nBR-12,5M<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nEscolhendo Em atual<\/strong>\r\n\r\nThe relevant nominal discharge current In for the SPD is in relation with the lightning risk in the installation area.\r\n\r\nThe minimum rating of In for a SPD connected at the installation entrance is 5 kA (8\/20 \u03bcs waveform), required by standard.\r\n\r\nNevertheless higher ratings are advised in case of high lightning density.\r\n\r\nMoreover higher values of In current will increase the SPD lifetime.\r\n\r\nImax (max. discharge current) rating is linked to In.\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Condi\u00e7\u00f5es<\/strong><\/td>\r\nEm<\/strong><\/td>\r\nBRITEC<\/strong><\/td>\r\n<\/tr>\r\n
Densidade de raios muito alta<\/td>\r\n> 20 kA<\/td>\r\nBR-60 \r\n\r\nBR-70<\/td>\r\n<\/tr>\r\n
Densidade de raios alta ou m\u00e9dia<\/td>\r\n10-20 ka<\/td>\r\nBR-40 \r\n\r\nBR-20<\/td>\r\n<\/tr>\r\n
Baixa densidade de raios ou SPD secund\u00e1rio<\/td>\r\n5 kA<\/td>\r\nBR-15DP<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nEscolhendo o n\u00edvel de prote\u00e7\u00e3o acima<\/strong>\r\n\r\nThe user must select a surge protector with a protection level Up adapted to the withstand level of terminal equipment. In every case, the lower the protection level Up, the better the protection.\r\n\r\nIEC 60364 standard calls for the minimum protection level of 2.5 kV for a SPD connected at the entrance of a 230\/400 V network: this level is in compliance with the withstand of robust devices (electromechanical type).\r\n\r\nElectronic-based terminals have lower impulse withstand and require a better protection: so, surge protectors with 1.5 kV protection are necessary to provide efficient protection.\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Condi\u00e7\u00f5es<\/strong><\/td>\r\nRecomendado<\/strong><\/td>\r\n<\/tr>\r\n
230\/400 V \r\n\r\nAC network<\/td>\r\n120\/208 V \r\n\r\nAC network<\/td>\r\n<\/tr>\r\n
SPD na entrada da instala\u00e7\u00e3o<\/td>\r\n2,5kV m\u00e1x.<\/td>\r\n1,5kV m\u00e1x.<\/td>\r\n<\/tr>\r\n
Equipamento protegido eletromec\u00e2nico<\/td>\r\n2,5kV<\/td>\r\n1,5kV<\/td>\r\n<\/tr>\r\n
Equipamento protegido baseado em eletr\u00f4nica<\/td>\r\n1,5kV<\/td>\r\n0,8kV<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n ","protected":false},"featured_media":826,"parent":0,"menu_order":164,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-825","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"Britec\u2019s line of AC power surge protectors is designed to cover all possible configurations in low voltage installations.","txt":"Choosing Surge Protectors<\/strong>\r\n\r\nBritec\u2019s line of AC power surge protectors is designed to cover all possible configurations in low voltage installations. They are available in many versions, which differ in:\r\n\r\n\u2013 Type or test class (1, 2 or 3)\r\n\r\n\u2013 Operating voltage (Uc)\r\n\r\n\u2013 AC network configuration (Single\/three-Phase)\r\n\r\n\u2013 Discharge currents (Iimp, In, Imax, Uoc)\r\n\r\n\u2013 Protection level (Up)\r\n\r\n\u2013 Protection technology (varistors, spark gap, filter)\r\n\r\n\u2013 Features (differential mode, plug-in, remote signaling, compact).\r\n\r\nThe surge protection selection must be done following the local electrical code requirements (e.g.: minimum rating for In) and specific conditions (e.g.: high lightning density).\r\n\r\nChoosing the Type of surge protectors<\/strong>\r\n\r\nThe type of surge protector is based on its location and the constraints of the installation to be protected.\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Configuration<\/strong><\/td>\r\nSPD<\/strong><\/td>\r\nLocation<\/strong><\/td>\r\nBRITEC<\/strong><\/td>\r\n<\/tr>\r\n
Installation equipped with LPS or could be hit by lightning<\/td>\r\nType 1+2 \r\n\r\nType 1+2+3<\/td>\r\nOrigin of the installation origin (Panel or main switchboard)<\/td>\r\nBR-50GR \r\n\r\nBR-25GR\r\n\r\nBR-25M\r\n\r\nBR-12.5M<\/td>\r\n<\/tr>\r\n
Installation without LPS<\/td>\r\nType 2 \r\n\r\nType 2+3<\/td>\r\nmain switchboard<\/td>\r\nBR-40 \r\n\r\nBR-20<\/td>\r\n<\/tr>\r\n
Secondary protection (downstream primary SPD)<\/td>\r\nType 2 \r\n\r\n(or Type 3)<\/td>\r\nclose to protected equipment<\/td>\r\nBR-40DP \r\n\r\nBR-20DP<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nChoosing the operating voltages Uc and UT<\/strong>\r\n\r\nThe SPD Uc voltage (maximum continuous operating voltage) depends on:\r\n\r\n\u2013 Nominal voltage of the AC network (Uo)\r\n\r\n\u2013 Type of AC system (TN, TT, IT).\r\n\r\nThe level of resistance to temporary overvoltage (UT) is related to the Uc voltage. In addition, withstanding the \u201chigh voltage\u201d TOV (1200 Vac, 300A, 200ms) between Neutral and PE is needed in TT AC system.\r\n\r\nOperating voltage Uc (Line\/Ground)<\/strong>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
AC Network<\/td>\r\n230\/400V<\/td>\r\n120\/208V<\/td>\r\n<\/tr>\r\n
AC system<\/td>\r\nTT<\/td>\r\nTN<\/td>\r\nIT<\/td>\r\nTN<\/td>\r\n<\/tr>\r\n
Voltage Uc mini<\/td>\r\n255V<\/td>\r\n255V<\/td>\r\n440V<\/td>\r\n135V<\/td>\r\n<\/tr>\r\n
Voltage UT<\/td>\r\n335\/440 V<\/td>\r\n335\/440 V<\/td>\r\n\u2014<\/td>\r\n230\/175 V<\/td>\r\n<\/tr>\r\n
TOV N\/PE<\/td>\r\n1200 V<\/td>\r\n<\/td>\r\n<\/td>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nChoosing Iimp<\/strong>\r\n\r\nThe impulse current Iimp is defined for Type 1 SPD. The minimum rating for Iimp is 12.5 kA by pole, following IEC 60364-5-534. This level is adapted to the real phenomenon. This value can, however, be increased according to the risk (calculation according to EN 62305-1). BRITEC proposes, in its Type 1 SPD range, 3 levels of Iimp current by pole: 12.5kA, 25kA and 50 kA.\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Configuration<\/strong><\/td>\r\nIimp\/pole<\/strong><\/td>\r\nBRITEC<\/strong><\/td>\r\n<\/tr>\r\n
Maximum risk<\/td>\r\n50kA<\/td>\r\nBR-50GR<\/td>\r\n<\/tr>\r\n
Very high lightning density Bad earthing<\/td>\r\n25kA<\/td>\r\nBR-25GR \r\n\r\nBR-25M<\/td>\r\n<\/tr>\r\n
High, medium or low lightning density<\/td>\r\n12.5kA<\/td>\r\nBR-12.5M<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nChoosing In current<\/strong>\r\n\r\nThe relevant nominal discharge current In for the SPD is in relation with the lightning risk in the installation area.\r\n\r\nThe minimum rating of In for a SPD connected at the installation entrance is 5 kA (8\/20 \u03bcs waveform), required by standard.\r\n\r\nNevertheless higher ratings are advised in case of high lightning density.\r\n\r\nMoreover higher values of In current will increase the SPD lifetime.\r\n\r\nImax (max. discharge current) rating is linked to In.\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Conditions<\/strong><\/td>\r\nIn<\/strong><\/td>\r\nBRITEC<\/strong><\/td>\r\n<\/tr>\r\n
Very high lightning density<\/td>\r\n> 20 kA<\/td>\r\nBR-60 \r\n\r\nBR-70<\/td>\r\n<\/tr>\r\n
High or medium lightning density<\/td>\r\n10-20 kA<\/td>\r\nBR-40 \r\n\r\nBR-20<\/td>\r\n<\/tr>\r\n
Low lightning density or secondary SPD<\/td>\r\n5 kA<\/td>\r\nBR-15DP<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nChoosing the protection level Up<\/strong>\r\n\r\nThe user must select a surge protector with a protection level Up adapted to the withstand level of terminal equipment. In every case, the lower the protection level Up, the better the protection.\r\n\r\nIEC 60364 standard calls for the minimum protection level of 2.5 kV for a SPD connected at the entrance of a 230\/400 V network: this level is in compliance with the withstand of robust devices (electromechanical type).\r\n\r\nElectronic-based terminals have lower impulse withstand and require a better protection: so, surge protectors with 1.5 kV protection are necessary to provide efficient protection.\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Conditions<\/strong><\/td>\r\nRecommended Up<\/strong><\/td>\r\n<\/tr>\r\n
230\/400 V \r\n\r\nAC network<\/td>\r\n120\/208 V \r\n\r\nAC network<\/td>\r\n<\/tr>\r\n
SPD at the installation entrance<\/td>\r\n2.5 kV max.<\/td>\r\n1.5 kV max.<\/td>\r\n<\/tr>\r\n
Electromechanical protected equipment<\/td>\r\n2.5 kV<\/td>\r\n1.5 kV<\/td>\r\n<\/tr>\r\n
Electronic-based protected equipment<\/td>\r\n1.5 kV<\/td>\r\n0.8 kV<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n "},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/blog\/825","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\/826"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/media?parent=825"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/pt\/wp-json\/wp\/v2\/blog_category?post=825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}