sábado, 28 de janeiro de 2012

Nobreak Infinium Ragtech Reparo...

Olá amigos, esta semana em uma das empresas que presto serviço entrou um nobroak RAGTECH INFINIUM, equipamento de 1000VA, no qual apresenta entrada em bivolt 110/220v e com saída fixa em 115v.

Modelo já fora de linha, mas com bom desempenho e segurança apesar de não ser totalmente processado e contar com adaptadores lógicos de controle variável analógico( os 4 trimpots de ajustes) mas possui ajustes eletrônicos e analise da rotina em eepron (bios).

Pois bem o equipamento pertence há um cartório da cidade e segurava em sua saída 2 maquinas com seus respectivos monitores, ainda "de alto consumo CRT". Pois bem o equipamento armava e desarmava com "instalos".

Uma busca visivel no mesmo ,revelou um dos vários problemas. OS relês estavam ressecados e danificados em seu exterior e pedaços deste material plástico impediam os contatos da chave magnética "relês" e com isso não havia o correto funcionamento do mesmo.

Efetuado troca dos mesmos e analisada as baterias contatei que estavam desgastadas e deveriam ser substituidas por outras novas 12V/7A.

Com os relês trocados e baterias novas e varistor ok, efetuei o teste simples de saida em carga resistiva 200w 127v e com um multimetro com leitura TRUE RMS, constatei uma pequena variação de tensão na qual foi corrigida com os trimpots e confirmada com carga real de potência. a frequencia estava em 60hz, a fase em ótimo balanceamento com á saída estavel e o regulador de tensão da bateria ajustados ( este modelo trabalha com bateria em serie(12v+12v).

O mesmo ficou perfeito suportando 3 computadores e estabilizando picos de tensão e variação de energia no simulador controlado monofasico isolado de tensão ( um trafo com saida de 95v e variação max 220v A/C).

O valor ficou em 2 baterias de 12v/7a + serviço de reparo do Nobreak, totalizando R$188,00.

imagens próprias
apoio http://bynelsinho.blogspot.com

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  48. Olá, muito bom o post, também estou restaurando um equipamento idêntico, entretanto estou com problemas para ajustar o carregador das baterias, o trimpot já está no máximo e ele ainda solta 18.6 V o correto seria 28.6 V, já troquei o CI LM 317 mas o problema persiste, o restante do aparelho já foi restaurado e o estabilizador e inversor estão OK falta esse problema no carregador, o antigo CI LM 317 fritou e o capacitor de 2200uF estourou, despois disso o carregado ficou em 18.6 V, tentei procurar o esquema mas sem cai neste post, parece o único na net com relação a esse equipamento, por um acaso vc teria uma dica para este problema ?? um grande abraço.

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      Normalmente utilizo a resolução do problema por etapas... procure tudo envolta d o capacitor danificado resistores e principalmente se houver diodo zenner, também veja se antes do CI lm317 existe tensão superior aos 28volts.

      Se não houver verifique os reles de comando e vá até o trafo e solte o fio correspondente a o"recarregador da bateria" e colete as tensões "alternadas e acrescente 33% ao resultado, que deve ser maior que 28 volts contínuos" isso mostra se está tendo tensão suficiente para "regulagem e recarregamento da bateria".

      acredito que o ponto chave seja o capacitor danificado e circuitos anexos e o ponto de entrada do LM 317.

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  50. Boa tarde, estou com um nobreak identico , que esta faltando 2 peças, U4 que parece ser um sensor, e trimpot TP6, alguem saberia me responder qual o valor dessas peças? porque nao achei o esquema elétrico!

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