【正文】 . 18B 21 Overload Test 過(guò)載 ..............................................21 22 Endurance 壽命 ................................................. 26 23 Dielectric VoltageWithstand 介電 .............................. 27 23A Dielectric Strength and VoltageWithstand Tests 介電強(qiáng)度和耐壓試驗(yàn) .............................................27 Dielectric strength test 介電強(qiáng)度 ........................... 27 Voltagewithstand test 耐壓 ..................................27 Details 細(xì)則 ................................................ 28 24 Recalibration 再校準(zhǔn) ........................................... 28 25 Short Circuit 短路 ..............................................28 OTHER PROTECTORS 其它保護(hù)器 26 Auxiliary Switches 輔助開關(guān) .................................... 34 General 總則 ................................................. 34 Temperature 溫升 ............................................. 34 Overload 過(guò)載 ................................................ 34 Endurance 壽命 ............................................... 36 Dielectric voltagewithstand 介電 ............................ 37 27 OvervoltageTrip Appliance Protectors 過(guò)電壓保護(hù)器 ............. 37 General 總則 ................................................. 37 Temperature 溫升 ............................................. 37 Overvoltage 過(guò)電壓 ........................................... 37 Operation 操作 ............................................... 37 Overload 過(guò)載 ................................................ 37 Endurance 壽命 ............................................... 37 Dielectric voltagewithstand 耐壓 ............................ 38 28 UndervoltageTrip Protectors 欠電壓保護(hù)器 ...................... 38 General 總則 ................................................. 38 Temperature 溫升 ............................................. 38 Overvoltage 過(guò) 壓 ............................................. 38 Operation 操作 ............................................... 38 Overload 過(guò)載 ................................................ 38 Endurance 壽命 ............................................... 38 Dielectric voltagewithstand 耐壓 ........................... .39 29 ShuntTrip Protectors 分流保護(hù)器 ............................... 39 General 總則 ................................................. 39 Temperature 溫升 ............................................. 39 Overvoltage 過(guò)壓 ............................................ .39 Undervoltage 欠電壓 .......................................... 39 Overload 過(guò)載 ................................................ 39 Endurance 壽命 ............................................... 39 Dielectric voltagewithstand 耐壓 ............................ 40 RATINGS 額定值 30 Details 細(xì)責(zé) ................................................... 40 MARKING 標(biāo)識(shí) 31 Specifics 細(xì)節(jié) ................................................. 40 APPENDIX A 附錄 A Standards for Components 部件標(biāo)準(zhǔn) ................................. A1 APPENDIX B Examples of Valid U and C Code Combinations 附錄 B 有效的 U和 C組合代碼示例 INTRODUCTION 引言 1 Scope 適用 范圍 These requirements apply to supplementary protectors intended for use as over current, or over or undervoltage protection within an appliance or other electrical equipment where branch circuit over current protection is already provided, or is not required. Compliance with the following is acceptable for use as a ponent of an end product. 這些要求 適用 于 使用在 支路已有或不需要過(guò)載保護(hù) 的 電器或其他電力設(shè)施 上的具有 過(guò)載 、 過(guò)壓或欠壓保護(hù) 功能的輔助保護(hù)器 。 MAGNETIC TRIP PROTECTOR － A protector that is caused to trip by current through a mag coil. 磁脫扣保護(hù) 器 ：因磁線圈 中的 電流而脫扣的保護(hù)器。 TRIP CURRENT － The current at which an overcurrenttrip protector is intended to open the contact circuit at a given ambient temperature and a given time. 脫扣電流：在給定 的 環(huán)境 溫度和時(shí)間下，使過(guò)載 電流 保護(hù)器 剛好 斷開電路時(shí)的電流強(qiáng)度 TRIPFREE – A protector designed so that the contacts cannot be held in the closed position by the operating means during trip mand conditions. 自由脫扣：閉合操作開始后，若進(jìn)行自動(dòng)斷開操作，即使閉合命令仍維持著，其動(dòng)觸頭能返回并保持在斷開位置上的設(shè)備用斷路器。 CONSTRUCTION 結(jié)構(gòu) 6 General 總體要求 A protector shall have an integral housing for all mechanisms and live parts, except the operating handle and the wiring terminals, and shall be capable of being operated or reset without opening the housing. 除了操作手柄和接線端 子 外，保護(hù)器應(yīng)對(duì)所有 機(jī)構(gòu) 和 帶 電部件有整體的封裝，并能夠在不開封的進(jìn)行操作和 復(fù)位 。 A material that is used for the direct support of an uninsulated live part shall ply with the Relative Thermal Index (RTI), Hot Wire Ignition (HWI), HighCurrentArc Resistance to Ignition (HAI), and Comparative Tracking Index (CTI) values indicated in Table . A material is considered to be in direct support of an uninsulated live part if: a) It is in direct physical contact with the uninsulated live part。 Exception No. 5: A material that is used in a device that incorporates contacts but is not used within 1/2 inch ( mm) of the contacts need not ply with the HAI PLC requirements. 特例五：用于與接觸器組合在一起的裝置內(nèi)，但非 1/2 英寸（ ）之內(nèi) , 則材料無(wú)需符合對(duì) HAI PLC 的要求。 Friction between surfaces shall not be used as the sole means to restrict movement of currentcarrying parts. Movement is to be restricted by use of: a) Two screws or rivets。若螺釘深入部分不膨脹，則其錐度 或 垂直度 和 第一個(gè)全螺紋可在 測(cè)量 深入 程度 時(shí)忽視。 To determine pliance with , each field wiring lead is to withstand a tensile force increased gradually to 20 lbf (89N), and maintained at that value for 5 minutes. 為了判斷是否符合 。任何情況下，都不可進(jìn)入金屬小于 2個(gè)全螺紋。 The means for manual operation for a protector shall be such that the contacts cannot be held in the closed position when the protector is tripped automatically – that is, the protector shall be tripfree from the operating handle. There are two types of tripfree as defined by and . See also . 手動(dòng)操作保護(hù)器的方法，應(yīng)能保證在保護(hù)器自動(dòng)脫扣時(shí)，觸頭不被保持在閉合位置。從一個(gè)元件到另一個(gè)元件或到接地導(dǎo)體間的電氣間隙應(yīng)如表 。C ）不