【正文】 保護器 ...................... 38 General 總則 ................................................. 38 Temperature 溫升 ............................................. 38 Overvoltage 過 壓 ............................................. 38 Operation 操作 ............................................... 38 Overload 過載 ................................................ 38 Endurance 壽命 ............................................... 38 Dielectric voltagewithstand 耐壓 ........................... .39 29 ShuntTrip Protectors 分流保護器 ............................... 39 General 總則 ................................................. 39 Temperature 溫升 ............................................. 39 Overvoltage 過壓 ............................................ .39 Undervoltage 欠電壓 .......................................... 39 Overload 過載 ................................................ 39 Endurance 壽命 ............................................... 39 Dielectric voltagewithstand 耐壓 ............................ 40 RATINGS 額定值 30 Details 細責(zé) ................................................... 40 MARKING 標識 31 Specifics 細節(jié) ................................................. 40 APPENDIX A 附錄 A Standards for Components 部件標準 ................................. 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載保護 的 電器或其他電力設(shè)施 上的具有 過載 、 過壓或欠壓保護 功能的輔助保護器 。終端產(chǎn)品的部件亦需遵從下述要求。因此，在某一特別應(yīng)用中，保護器可能受其外部設(shè)備的影響，并 可能 有必要對本標準未列明的特性進行額外評估。 Devices which ensure a manual restart due to the plete loss of voltage are covered by the Standard for SolidState Controls for Appliances,UL244A. 由于完全失去電壓而手動復(fù)位的的裝置，使用 UL244A。 MAGNETIC TRIP PROTECTOR － A protector that is caused to trip by current through a mag coil. 磁脫扣保護 器 ：因磁線圈 中的 電流而脫扣的保護器。 OVERVOLTAGETRIP PROTECTOR － A magic trip protector intended to trip the contact circuit if the voltage across the trip coil rises above a predetermined value. 過壓脫扣保護：因脫扣線圈間的電壓超出 預(yù)期值 而脫扣的磁脫扣保護器 RATED CURRENT － For an overcurrenttrip protector, the current that the protector is intended to carry continuously without opening of the circuit. 額定電流： 過電流脫扣保護器能持續(xù)承載 而不斷開的電流 。脫扣 機構(gòu) 可為過 電流型 或 電壓啟動型 。也可用手動方式斷開或閉合電路。 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 溫度和時間下，使過載 電流 保護器 剛好 斷開電路時的電流強度 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，若進行自動斷開操作，即使閉合命令仍維持著，其動觸頭能返回并保持在斷開位置上的設(shè)備用斷路器。 TRIP MECHANISM － The part of the protector that senses the abnormal condition in the circuit and causes the contact circuit to open. 脫扣裝置： 能 在 電路異常 時 斷開的保護器 TRIP VOLTAGE － The voltage at which an overvoltage protector or undervoltage protector is intended to trip. 脫扣電壓：使過壓保護 器 或低壓保護 器剛好 脫扣的電壓 UNDERVOLTAGETRIP PROTECTOR － A magic trip protector intended to trip the contact circuit if the voltage across the trip coil falls below a predetermined value. 欠電壓脫扣保護器 ：當(dāng) 脫扣線圈的 電壓低于 預(yù)期值 ，使接觸電路斷開的磁脫扣保護器 3 Components 組成 Except as indicated in , a ponent of a product covered by this standard shall ply with the requirements for that ponent. See Appendix A for a list of standards covering ponents generally used in the products covered by this standard. 除 所指出之 外，本標準所涵蓋產(chǎn)品之 零部件 需 符合對該零部件的要求 。 A ponent need not ply with a specific requirement that: a) Involves a feature or characteristic not needed in the application of the ponent in the product covered by this standard, or b) Is superseded by a requirement in this standard. 零部件 無 需 符合單獨要求的情況有 ： a)擁有的某項 特征 或特性不在本標準涵蓋的產(chǎn)品部件應(yīng)用之列，或 b)該 特征 或特性依照本標準要求 ，取代其它要求 。 Specific ponents are recognized as being inplete in construction features or restricted in performance capabilities. Such ponents are intended for use only under limited conditions, such as certain temperatures not exceeding specified limits, and shall be used only under those specific conditions for which they have been recognized. 特殊部件是結(jié)構(gòu)特征不完全或表現(xiàn)性能受限的。 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，保護器應(yīng)對所有 機構(gòu) 和 帶 電部件有整體的封裝，并能夠在不開封的進行操作和 復(fù)位 。 7 Corrosion Protection 腐蝕保護 Iron and steel parts except for thermal elements, mag pole faces, hardened and polished parts such as latching surfaces, and the like, where such protection is impractical, shall be acceptably protected against corrosion by enameling, galvanizing, plating, or other equivalent means. 除了熱元件 、 磁極面 、 強化及拋光零部件（如閉鎖裝置）等這些不適合此保護的零部件外，鋼鐵零部件應(yīng)以上釉、鍍鋅、電鍍或其他相似方法 防 腐蝕。由不銹鋼制成的零件，如需適當(dāng)拋光或加工，則對腐蝕無需額外防護。 除了 瓷 、酚類物質(zhì) 或不對 載 流 部件 起固定作用的 材料， 其它都 應(yīng)以實際運作狀況檢驗其性能，以此判定它有沒有所需的電 氣的 、機械 的 和 可 燃 的 性 能（除非用于特殊用途） 。 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