{"type":"product","schema_version":"1.0","item_id":"100080620090","canonical_url":"https://tw.bid.yahoo.com/item/100080620090","title":"[yo-hong]4位高精度雙顯示數位電壓電流錶頭(含分流器)0-30V50A 另有30A 100A 200A","subtitle":null,"condition":"全新品","currency":"TWD","observed_at":"2026-05-20T09:38:24.838Z","current_price":310,"original_price":null,"stock_status":"in_stock","available_quantity":996,"sold_quantity":3,"seller":{"id":"Y8886622807","name":"佑宏資訊","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/1a2fa388-487d-4dc6-8385-fd00538a8bf6.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/27a9dcce-f6fe-4739-b5c0-f9a7700e1d1f.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/687bd553-6826-4b20-b075-770651477cc0.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null}],"description":"購買注意:本標為50A(含分流器)\n一.本商品的電壓量程範圍是0-30V 電流量程範圍可以根據您的實際需求選擇.\n二.30A 50A 100A 200A表頭必須接分流器才可使用,即便測試1A的電流也要加分流器(新手注意).!\n \n三.接線方式:本表接線方式靈活。可與被測試設備共用電源，也可以採用獨立供電，只需改變接線即可！\n四.錶頭參數：\n1.工作電源：3.8-30V 直流電源 帶反接保護(但反接也不可超30V)\n2.本機耗電：<=20MA,非常省電\n3.刷新速度：約3次/S\n4.電流內阻：2A/10毫歐,5A/10毫歐,10A/5毫歐,20A/3.75毫歐,50A/1.5毫歐,100A/0.75毫歐,200A/0.375毫歐\n5.電壓內阻：30V/800K\n6.測試精度：\n電壓：量程X0.08%+2個字\n電流：量程X0.08%+2個字\n量程選取技巧:誤差大小和量程密切相關,小量程可以得到更小的誤差\n7.顯示顏色：電壓紅色+電流藍色\n8.外形尺寸：48mm*29mm*20mm(塑膠外殼尺寸)\n9.開孔尺寸:45.5mm*26mm\n五.特別說明:對於帶外接分流器的表頭,一定要接好分流器才可以通電!切記!\n六.特別注意: 如果表頭工作電源與測試電流來自同一個電源!此時表頭到分流器之間的黑色地線一定要短,不能隨意加長,加太長會引起很大誤差. 對於不得不加長的地方,必須換成很粗的導線(可自已試驗一下效果)!最好的辦法是把表頭和分流器靠近,不要加長地線. 對於表頭工作電源和測試電流採用隔離電源供電的,則不存在這個問題!因此為了保證測量準確,最好是採用隔離供電,如果不方便使用隔離電源的,可以另外加一個隔離模組!隔離模組的作用是像變壓器一樣,把電源轉換出一個隔離的電源來給表頭供電!","shipping_methods":[{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"郵局掛號","fee":0,"currency":"TWD"},{"name":"面交/自取/不寄送","fee":0,"currency":"TWD"},{"name":"萊爾富取貨付款","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","萊爾富取貨付款","7-ELEVEN取貨付款"],"category_id":"2092080282","category_name":"電料","breadcrumb":[{"id":"24198","name":"居家、家具與園藝","url":"/tw/%E5%B1%85%E5%AE%B6%E3%80%81%E5%AE%B6%E5%85%B7%E8%88%87%E5%9C%92%E8%97%9D-24198-category.html"},{"id":"24642","name":"五金/照明工具","url":"/tw/%E4%BA%94%E9%87%91-%E7%85%A7%E6%98%8E%E5%B7%A5%E5%85%B7-24642-category.html"},{"id":"2092080282","name":"電料","url":"/tw/%E9%9B%BB%E6%96%99-2092080282-category.html"}],"view_count":2,"watch_count":2}