Dispositivo DR: o que é e para que serve

CURIOSIDADES

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O dispositivo DR é um interruptor automático que desliga correntes elétricas de pequena intensidade, que um disjuntor comum não consegue detectar

[{"selector":"#anim-06fa5549-9903-4f42-a3aa-e44835a950a3","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-dd0524f3-210c-4595-8942-185d9224911e","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b5cdf1ed-c0d1-48bd-badf-b7bb4877e7e6","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8eeb5599-2cc0-44d2-b53b-6a74c770be93","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ef1bf861-b4dd-4d2e-a3e3-ab73f66c13b2","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1972ae81-6756-4043-9e8d-1fc9b510d51c","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8f122821-0551-414a-82e6-a6a3fc59982e","keyframes":{"transform":["translate3d(-117.79935%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b3c0a218-c9d9-4abb-ac98-39edfa5997bb","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

O dispositivo DR (Diferencial Residual) protege as pessoas e os animais contra os efeitos do choque elétrico por contato direto ou indireto

[{"selector":"#anim-d636097b-a0b2-48d4-bc31-d70a227690d4","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-91a82114-e341-49d6-bb52-443c51a7e75c","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a6b61baa-a736-457e-9811-cba1a724bfae","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-25aec55c-7475-49be-a020-1b63d6d8521d","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-13158894-3df4-4424-900d-7bc60579e6cb","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0a08b49c-3f38-48dc-878d-ac94537a2ee8","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-69b07d22-2c7c-44b0-a576-6850a21d5863","keyframes":{"transform":["translate3d(-117.79935%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a5d5f648-1784-4512-baa1-4f14ca0c401a","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

Ao detectar uma fuga de corrente na instalação, o dispositivo DR desliga o circuito imediatamente.

[{"selector":"#anim-afd5375d-e2a0-41f0-beb0-194b94bdbb2d","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c62b3ce2-57c8-419b-a4d8-0f1b81f74a93","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-62c3a482-45f5-4d73-bd4f-d45f9c3b9948","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-164ef825-858f-4ecc-a64e-ded7cdccbfb0","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2097c140-005c-4c4d-9a4e-5131feec0f5b","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-de80bbd6-3cce-4d7c-bdae-2927b6441094","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-edbb2aac-a5b5-48a7-ba23-06aa58a80a71","keyframes":{"transform":["translate3d(-117.79935%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8e7096ac-f1f6-457b-8ba1-56bc590c13f1","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

Quando o uso do DR é obrigatório?

[{"selector":"#anim-3112c6f1-664a-472d-9954-9b531a5f77df","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-eb605f37-94d0-4172-bed5-9baa912fbf9a","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2d5ce918-05db-46ad-86a6-2c3349eefa8f","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-86469451-ce20-4624-809d-b2e506bd9a2d","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5fd47f0e-8a97-46c7-99ec-5dfb68bc7a86","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c8b62a25-f531-40ba-b169-d66605d1bd62","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-89d8c071-71d9-4972-85c0-6c976de9887f","keyframes":{"transform":["translate3d(-117.79935%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4d38cc1f-70e2-4bbe-aa4b-35e03dc2bd17","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

De acordo com o item 5.1.3.2.2 da norma NBR 5410, o dispositivo DR é obrigatório desde 1997 nos seguintes casos:

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– Em circuitos que sirvam a pontos de utilização situados em locais que contenham chuveiro ou banheira;

[{"selector":"#anim-4afce631-bb5d-4fc7-8656-2e1772989e0e","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-63f66f11-94a3-4437-ac72-3369a9226f47","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-771a4218-9fe0-458e-9294-fff957256897","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b5a85244-872b-478f-9ae9-507abe59f17d","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-fd6eac54-20fe-48ca-9731-df9c22a6079b","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-58e36558-ae3e-403b-838f-8ac832995235","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-716e333e-d16b-4673-bc28-7b09a227eb1e","keyframes":{"transform":["translate3d(-117.79935%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-238c34d8-67e0-4346-a6dc-c2a00fae7f67","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

– Em circuitos que alimentam tomadas situadas em áreas externas à edificação;

[{"selector":"#anim-5e6226a6-4d6f-4327-b4c5-8ac7cbe1f0df","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ea6bf341-778b-4218-b01e-1ec3e43bd47c","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ca06a416-2e24-4f49-be9e-aa4acdd43160","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8ae860cb-c3c8-424b-adf3-9fe9b931d82d","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-483bd0d3-b92f-44dc-a36e-1052b6dce74e","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0cd8e261-239e-4b00-863b-820619c12bf9","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b6ff244f-60bc-44f8-82ff-882ca583dfcf","keyframes":{"transform":["translate3d(-117.79935%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-be024206-54c6-4b46-8b03-bb8297e86717","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

– Em circuitos que alimentam tomadas situadas em áreas internas que possam vir a alimentar equipamentos na área externa;

[{"selector":"#anim-58d1daaf-ebe9-4f69-9476-40f712cb48d4","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0fb3c704-c14a-4b5b-882f-abbad9aefa3a","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2ef171dd-956a-41bb-9c8a-844d8f2f474e","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-05a7858e-d1f6-49dd-bc2b-bfca28594e7f","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-277582c7-5a88-46f6-a960-a0dd2dfc9cb0","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6f98373a-f955-4cf0-896b-73f9667a95d5","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-feebe20e-f6a8-4e97-b0a0-50c10e7f6f7c","keyframes":{"transform":["translate3d(-116.66667%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-fa4c13a5-9d1b-4802-8d62-13463756ae42","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

– Em circuitos que sirvam a pontos de utilização situados em cozinhas, copas, lavanderias, áreas de serviço, garagens e demais dependências internas normalmente molhadas.

[{"selector":"#anim-9b942f71-f765-454d-bcbd-c00d3d6a309f","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ca85eeb7-f53b-4ffb-9888-03352b049818","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cd04ca4d-de99-46b9-b1ec-0b692d7a8fbd","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 83.22631%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":0,"duration":800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-238c7200-3a87-40f9-bacb-1b1d7b0e08fc","keyframes":{"opacity":[0,1]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-46b82b45-d550-4e07-8f62-dc00fccebab3","keyframes":{"transform":["rotate(-40deg) translate3d(0px, 82.00039%, 0) rotate(40deg)","rotate(-40deg) translate3d(0px, 0px, 0) rotate(40deg)"]},"delay":100,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-45c640d5-674d-47fd-97bc-db8be8542476","keyframes":{"opacity":[0,1]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1d64a817-e338-48cb-8bac-659cc3450346","keyframes":{"transform":["translate3d(-117.79935%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":200,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9d20e9a0-44c7-48d4-b3cf-51d2df7b8144","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Saiba mais

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CURIOSIDADES

CURIOSIDADES

"DR" O QUE É E PARA QUE SERVE

O dispositivo DR é um interruptor automático que desliga correntes elétricas de pequena intensidade, que um disjuntor comum não consegue detectar

O dispositivo DR (Diferencial Residual) protege as pessoas e os animais contra os efeitos do choque elétrico por contato direto ou indireto

Ao detectar uma fuga de corrente na instalação, o dispositivo DR desliga o circuito imediatamente.

Quando o uso do DR é obrigatório?

De acordo com o item 5.1.3.2.2 da norma NBR 5410, o dispositivo DR é obrigatório desde 1997 nos seguintes casos:

– Em circuitos que sirvam a pontos de utilização situados em locais que contenham chuveiro ou banheira;

– Em circuitos que alimentam tomadas situadas em áreas externas à edificação;

– Em circuitos que alimentam tomadas situadas em áreas internas que possam vir a alimentar equipamentos na área externa;

– Em circuitos que sirvam a pontos de utilização situados em cozinhas, copas, lavanderias, áreas de serviço, garagens e demais dependências internas normalmente molhadas.

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