亚洲五月激情,久久免费国产,亚洲综合九九,久久99精品久久久久久噜噜噜,久久精品123,久久精品国产精品亚洲精品

<ul id="cykkq"></ul>

保險絲使用壽命測試評估四步曲

2018-12-13 10:03:20 lipscall

在IEC標準中規定保險絲有“耐久性試驗法”，而UL標準中無類似的規定。

IEC標準中保險絲的耐久性試驗即是壽命試驗，其方法是，保險絲在正常溫度下使用直流電源測試：

1、額電流直到溫度穩定下測電壓降；

2、1.2倍額定電流1h 切斷電流15min。循環100次；

3、通電1.5In 1h 測電壓降；

4、同1法測電壓降。

要求：試驗前后電壓降變化不應超過10[%]，且標識仍清楚可辯，端帽焊點不出現任何劣變.

常見問題

常見問題

電話咨詢

產品中心

在線詢價

" class="item" target="_blank"> QQ客服

{"status":1,"html":"<style type=\"text\/css\">\r\n.onlinebox_three{border:2px solid;}\r\n.onlinebox_three .onlinebox_three_list{width: 160px;padding: 10px 0px;}\r\n.onlinebox_three .online-item{margin-bottom: 5px; padding: 0px 17px; position: relative;display: block;color: #666;}\r\n.onlinebox_three .online-item:last-child{margin-bottom: 0px;}\r\n.onlinebox_three .online-item:hover{background: #f8f8f8;}\r\n.onlinebox_three .online-item i{font-size: 16px;}\r\n.onlinebox_three .onlinebox-open{font-size: 22px;display:none;cursor: pointer;padding: 0 10px; font-size: 18px; line-height: 40px;}\r\n.onlinebox.min .onlinebox-open{display:block;padding:0 10px;background:#444;font-size:18px;line-height:40px;color:#fff}\r\n.onlinebox .onlinebox-min{position: relative;top:-4px;}\r\n@media (max-width: 767px){\r\n.onlinebox_three .online-item{font-size: 12px;padding-top: 6px;}\r\n.onlinebox_three .online-item i{font-size: 14px;}\r\n}\r\n<\/style>\r\n<div   class="9rlpb9x"   id='onlinebox'  class=\"onlinebox onlinebox_three hide\" m-type='online' m-id='online' style=\"border-color:#f29f05;\">\r\n    <div   id="9rlpb9x"   class=\"onlinebox-open\" style=\"background:#f29f05;\"><i class=\"fa fa-comments-o\"><\/i><\/div>\r\n    <div   id="9rlpb9x"   class=\"onlinebox-box\">\r\n        <div   id="9rlpb9x"   class=\"onlinebox-top\" style=\"background:#f29f05;\">\r\n            <div   id="9rlpb9x"   class=\"onlinebox-top-btn font-size-26\">\r\n                <a href=\"javascript:;\" class=\"onlinebox-close\" title=\"\">×<\/a>\r\n                <a href=\"javascript:;\" class=\"onlinebox-min\">-<\/a>\r\n            <\/div>\r\n            <h4>在線交流<\/h4>\r\n        <\/div>\r\n                                      <div   id="9rlpb9x"   class=\"onlinebox_three_list\">\r\n                                                                      <a href=\"https:\/\/wpa.qq.com\/msgrd?v=3&uin=2881428919&site=qq&menu=yes\" title=\"2881428919\" class=\"online-item\" target=\"_blank\">\r\n                            <i class=\"icon fa-qq\" style=\"color:#f29f05;\"><\/i>\r\n                            <span>在線客服<\/span>\r\n                        <\/a>\r\n                                                                                  <a href=\"https:\/\/wpa.qq.com\/msgrd?v=3&uin=2881428919&site=qq&menu=yes\" title=\"2881428919\" class=\"online-item\" target=\"_blank\">\r\n                            <i class=\"icon fa-qq\" style=\"color:#f29f05;\"><\/i>\r\n                            <span>采購咨詢<\/span>\r\n                        <\/a>\r\n                                                                                  <a href=\"tel:13088852503\" title=\"13088852503\" class=\"online-item\" target=\"_blank\">\r\n                            <i class=\"icon fa-phone\" style=\"color:#f29f05;\"><\/i>\r\n                            <span>聯系電話<\/span>\r\n                        <\/a>\r\n                                                                                  <a class=\"online-item text-xs-center met-weixin\" href=\"javascript:void(0)\">\r\n                            <img src='http:\/\/m.xutangzhu.cn\/upload\/202204\/jdt-qy.png' alt='自恢復保險絲_貼片保險絲_插件保險絲_力特保險絲_力特經銷商_SMD貼片保險絲_一次性保險絲廠家—深圳市集電通實業有限公司' width='120' height='120'\/>\r\n                            <p class=\"m-b-0\">微信掃碼咨詢<\/p>\r\n                        <\/a>\r\n                                                    <\/div>\r\n                <div   id="9rlpb9x"   class=\"met-editor onlinebox-bottom p-x-10 p-y-5\"><\/div>\r\n    <\/div>\r\n<\/div>","t":"4","x":"3","y":"200"}

亚洲五月激情,久久免费国产,亚洲综合九九,久久99精品久久久久久噜噜噜,久久精品123,久久精品国产精品亚洲精品

保險絲使用壽命測試評估四步曲

技術支持

在線留言

新聞資訊

常見問題