美國電動類廚房電器安全標準的基本要求-UL98課件2

1、美國電動類廚房電器安全標準的基本要求-UL9822022/7/25美國電動類廚房電器安全標準的基本要求-UL982Welcome to this seminar Your Global Partner in Quality!美國電動類廚房電器安全標準的基本要求-UL982ETL 是大發(fā)明家愛迪生于1896年創(chuàng)辦的. 我們是按照 ANSI/UL/CSA等標準來做認證測試的.美國電動類廚房電器安全標準的基本要求-UL982常用電動類食物處理器具的標準ANSI/UL982 Motor-Operated Household Food Preparing Machines (Sixth Edition

2、Rev.Jun. 09, 2010)ANSI/UL763 Motor-Operated Commercial Food Preparing Machines (4th Edition Rev. Oct. 24, 2012)CSA C22.2 No.195 Motor Operated Food Processing Appliances (Household and Commercial) Rev. 2009CSA C22.2 No.1335.2.14 Portable Electrical Motor-Operated and Heating Appliances: Particular R

3、equirements for Electrical Motor-Operated Kitchen Appliances (Consumer & Commercial Products) (Rev. 2008)美國電動類廚房電器安全標準的基本要求-UL982主要內容 適用范圍結構要求性能測試說明書和名牌生產線上的測試常見不良結構分析問題與回答美國電動類廚房電器安全標準的基本要求-UL982適用范圍家用電動類食物處理,短時間運行的器具.線連接或永久連接,標稱電壓為120V的器具.帶充電座的電池供電的器具.若器具帶有加熱功能,則同時還要另外考慮相關烹飪類的標準. 美國電動類廚房電器安全標準的基本要

4、求-UL982適用范圍 典型器具Food processorblenderWand type mixer Food mixer美國電動類廚房電器安全標準的基本要求-UL982適用范圍 典型器具Coffee mill Food chopper coffee grinder美國電動類廚房電器安全標準的基本要求-UL982適用范圍 典型器具 reamer type juicer centrifugal juicer can opener美國電動類廚房電器安全標準的基本要求-UL982適用范圍 典型器具Meat slicerKnife sharpenerIce cream freezer美國電動類廚房

5、電器安全標準的基本要求-UL982適用范圍 典型器具Liquid mixerMeat grinderBaby-food chopper美國電動類廚房電器安全標準的基本要求-UL982適用范圍SummaryQuestions & answer美國電動類廚房電器安全標準的基本要求-UL982結構要求外殼過流保護電源線連接內部布線電氣絕緣元件和組裝帶電部件馬達開關電氣間隙接地避免對人體傷害的保護(Protection against personal injury)美國電動類廚房電器安全標準的基本要求-UL982外殼所有的帶電和運動部件(除功能部件外)需要被包圍在外殼內.如果UL測試手指通過外殼的任

6、何小于25.4 mm的開孔不能觸及到沒有絕緣的導體或漆包線，則接受這樣的開孔.對于大于25.4 mm的開孔,如果在下圖二的開口范圍內無裸露的帶電部件和漆包線,則是可以接受的.(X等于五倍的最大能插進開口圓棒的直徑)在考慮帶電和運動部件的可接觸性要求時，不需要用工具就能去除的部件需要被移除.美國電動類廚房電器安全標準的基本要求-UL982外殼Test Finger美國電動類廚房電器安全標準的基本要求-UL982外殼對于自動控制的器具,其應帶有防止熔融金屬,燃燒顆粒等掉落到支撐面上, 通?？梢杂肂arrier 來達到這一要求, 但barrier必須符合下圖要求.美國電動類廚房電器安全標準的基本要求

7、-UL982外殼非金屬外殼的防火等級應至少為HB, HWI等級應至少為4.不產生點弧的帶電部件到非金屬外殼的距離應至少為0.8 mm,若距離小于0.8 mm則其應滿足UL746C的要求.產生點弧的帶電部件(開關觸片,馬達換向器)到非金屬外殼的距離應至少為12.7 mm,若距離小于12.7 mm(但是不得小于0.8 mm),則其應滿足HAI等級應至少為1的要求.對于家用的,便攜式的,間歇性運行的, 有人照看的器具,其非金屬外殼的溫度至少可以耐80度的溫度.以下將分別對非金屬材料的防火等級,HWI, HAI 專門講解.美國電動類廚房電器安全標準的基本要求-UL982ANSI/ULASTMCSAIE

8、CISO94HBD635HBC22.2 No. 0.17HB *60695-11-10(A)HB, HB40, HB7594V-0,V-1,V-2D3801V-0,V-1,V-2C22.2 No. 0.17V-0,V-1,V-260695-11-20(B)V-0,V-1,V-2945VA, 5VBD50485VA, 5VBC22.2 No. 0.175VA, 5VB60695-11-205VA, 5VB94VTM-0, -1, -2D4804VTM-0, -1, -2C22.2 No. 0.17VTM-0, -1, -29773VTM-0, -1, -294HBF,HF-1, -2D4985H

9、BF,HF-1, -2C22.2 No. 0.17HBF,HF-1, -29772HBF,HF-1, -2外殼美國電動類廚房電器安全標準的基本要求-UL982外殼美國電動類廚房電器安全標準的基本要求-UL982外殼美國電動類廚房電器安全標準的基本要求-UL982外殼How to read yellow card for polymeric material?美國電動類廚房電器安全標準的基本要求-UL982外殼You can find the material what you want under the following website: /portal/page/portal/ULIQ/

10、UL_iQ_Home_Page美國電動類廚房電器安全標準的基本要求-UL982電源連接電源線類型便攜式/櫥柜式/墻上安裝式產品: HPN, SPT-2, SVO, SVT, SVTO 或同等類型.電動刀和充電式產品(充電時不能用)： SPT-1 也可以用.手持式產品（重小于0.68kg): SPT-1, coiled type and max. extended length of 2.1m.Rated voltage not less than that of the appliance and have suitable ampacity.對于室外使用的器具其電源線至少應為SJW or S

11、JTW.電源線的大小應至少為18AWG.美國電動類廚房電器安全標準的基本要求-UL982 Power supply connectionsCord length電源線長度Hand-supported手持式產品: 1.52mCountertop operation臺式產品: 0.61mWall-mounted墻安裝式產品: 0.6-1.4mAttachment plug電源插頭2-wire polarized type兩線極性插頭3-wire grounding type三線接地型插頭美國電動類廚房電器安全標準的基本要求-UL982Power supply connectionsStrain r

12、elief(電源線拉力測試）Metal clamp may be use on SPT-1, SPT-2, SVT & SVTO cords protected by varnished-cloth tubing, vulcanized fiber under the clamp, thermoplastic tubing is not acceptable for thermoplastic cords. Nonmetallic clamp may be directly used on SPT-1, SPT-2, SVT & SVTO flexible cords without tubi

13、ng. cord shall be restrained from any rotation that will cause movement of internal wiring at splices and terminals電源線需要經受拉力測試（156N，1分鐘，無位移.推力測試（力施加于電源線1 inch位置，26.7N的力被應用).一般情況下拉力測試較難通過，建議電源線在使用線扣的同時，再使用一個UL結，這樣測試會容易通過.美國電動類廚房電器安全標準的基本要求-UL982Internal wiring內部線要有可靠的保護, 通常要用外殼包圍住.Thermoplastic insul

14、ated wire employed for internal wiring shall be standard building wire or appliance-wiring material that is provided with insulation appropriate for the purpose.內部線要遠離銳邊,毛刺,及運動部件,內部線穿過金屬外殼的孔時通常要加線護套, 或者該孔的表面要加工的非常光滑.所有的內部線要避免與溫度高的部件(如晶體管的散熱片)接觸,除非其耐溫值足夠高.所有的內部線的連接要可靠,焊接一定要勾焊.內部線的相關電氣規(guī)格不應小于器具的規(guī)格.美國電動

15、類廚房電器安全標準的基本要求-UL982帶電部件和電氣絕緣載流部件的材料通常為銀,銅,銅合金等其他同等的材料, 不銹鋼也可以用來當作載流部件.帶電部件通常要可靠固定,不能轉動和移動,單靠表面之間的摩擦來防止帶電部件的轉動是不接受的,用梅花介子是可以接受的.支撐帶電部件的材料應該是具有能抗?jié)裥缘男阅?支撐帶電部件的塑膠材料應該符合UL746C 的要求.固定易碎性的絕緣部件應該不能太緊,以避免該部件裂開.所有用做絕緣的Tube, 都要求有認證.美國電動類廚房電器安全標準的基本要求-UL982MOTOR 馬達常見的幾種馬達Series motorDC motor美國電動類廚房電器安全標準的基本要求-

16、UL982MOTOR 馬達常見的幾種馬達Syc motorSP motor美國電動類廚房電器安全標準的基本要求-UL982MOTOR 馬達馬達材料的選用支撐除magnet wire 以外的帶電部件的材料美國電動類廚房電器安全標準的基本要求-UL982MOTOR 馬達馬達材料的選用支撐magnet wire 的材料做隨機測試的馬達只能當class A 絕緣來看待.高過class A 的絕緣系統要按UL1446 來做絕緣系統的認證.美國電動類廚房電器安全標準的基本要求-UL982MOTOR 馬達馬達的過載保護自動控制器具的馬達應該提供過載保護, 并且其要符合UL2111的測試.Creamer fr

17、eezer, butter churn的馬達應該提供過載保護, 并且其要符合UL2111的測試.對于其他帶有馬達熱保護的非自動控制器具,其要能經受賭馬達測試等相關測試,并且其要符合UL2111的limited short circuit 測試.For appliances provided with an automatic reset or user-resettable overload-protective device where automatic restarting would result in a risk of injury to persons, each of thre

18、e representative appliances shall be energized and have their rotors stalled until the overloadprotective device opens. While still energized, and the rotor no longer stalled, the representative appliances shall then be allowed to cool down until the overload-protective device closes. The representa

19、tive appliance shall not automatically restart or have the possibility of accidentally being restarted. A distinct and deliberate motion shall be required to restart the representative appliance.美國電動類廚房電器安全標準的基本要求-UL982開關和控制器過流保護器應接在器具的L線端, 但對于1Hp的便攜式非自動啟動的120V的器具,并且如果過流保護器只是充當一個補充的保護裝置, 則可以不符合以上要求.

20、開關的電流和電壓rating值應不小于器具的電流和電壓rating值.對于非點觸式開關,應該明確標示ON,OFF位置.若便攜式器具帶有一個大于1/3 馬力的馬達,則該器具必須提供一個開關來控制馬達的ON/OFF.器具不能帶有through-cord switch.對于手動的,線連接的單極開關,可控硅或其他控制器(都是用于器具的ON/OFF 目的),應該連接到火線上(Ungrounded conductor).對于電子式開關(通常是通過可控硅或繼電器來實現),器具處于stand-by 的狀態(tài)下, 任何一個電子元器件失效, 不能觸發(fā)器具, 除非沒有危險的運動部件可以觸及到.(例外: 器具帶有一個機

21、械開關, 并且加一個在stand-by 狀態(tài)下閃動的紅色指示燈是可以接受的).器具的互鎖開關是不能用test finger觸發(fā)的.美國電動類廚房電器安全標準的基本要求-UL982Spacing電氣間隙Spacings between field wiring terminal of opposite polarity, and the spacing between a field wiring terminal and any other uninsulated metal part must 6.4mm.Spacings at other than field wiring termina

22、ls，refer to following form: 美國電動類廚房電器安全標準的基本要求-UL982Overcurrent protection and grounding Overcurrent protective device電流保護裝置wholly inaccessible from outside電流保護裝置從產品外殼上不能觸及connect to the ungrounded conductor of the power supply cord電流保護裝置需要連接在火線上.Grounding, 以下幾種情況,器具要求接地:The following types of appli

23、ances shall have provision for grounding:a) An appliance for use in damp or wet locations (see 5.9, 5.10, and 5.22); eg. Canopies, marquees, roofed open porches.b) An appliance intended for outdoor use;c) An appliance intended to be used on a circuit operating at more than 150 V to ground; andd) An

24、appliance intended for permanent connection to the supply source.器具的接地電阻不能大于0.1歐姆.美國電動類廚房電器安全標準的基本要求-UL982Protection against personal injury防止人身傷害的保護The instruction manual of the package containing a basic appliance and various attachments intended to be sell as a complete unit shall indicate what a

25、ttachments are intended for use with the basic appliance如果各種配件與主機一起作為一個整體出售，則其說明書應說明何種配件與主機一起使用；如果配件與主機分開包裝并出售，但由制造商推薦與主機一起使用，則應對配件進行編號，同時，主機說明書應標明其編號；重要安全指示，如適用于配件，則應與配件一起提供. 美國電動類廚房電器安全標準的基本要求-UL982Protection against personal injuryMoving members運動部件constructed to reduce the likelihood of its malf

26、unction, its unintentional realease, and its loosening of a part產品在結構上要減少可能造成的誤動作，無意的脫落及松動.series motor is to be operated at a voltage equal to 1.3 times rated voltage for 1 minute with no load器具在無外部負載下，在1.3倍額定電壓下工作1分鐘。測試后,能造成傷害的零件不應松動.requirement: no parts can be worked loose沒有部件能在工作時發(fā)生脫落或松動.Stabil

27、ity穩(wěn)定性No overturn shall be occurred when placed on a 10 inclined plane, if container is provided, either fill or empty situation shall be considered產品不通電放在10 的斜臺面上，產品不能翻倒，如果產品配有容器，則此容器需要組合不同狀態(tài)進行此測試.若產品帶有一容器, 則容器應加水到額定容量(沒有標示的話,則加水到最大量); 開罐機測試事不帶罐; Salad maker 和 food grinder 在空載下測試.美國電動類廚房電器安全標準的基本要求

28、-UL982Protection against personal injuryEnclosure & guard外殼及保護裝置all moving parts that may cause injury shall be enclosed所有可能導致傷害的運動部件需要被外殼包裹住(除非一些特殊功能的器具).not possible to actuate an interlock with test probe測試手指不能使互鎖裝置動作.Feeding mechanism shall be safe進料機制要安全可靠，不能傷害到使用者Pusher shall provided with con

29、tinuous manual feeding當器具需要連續(xù)手動進料時，應提供推桿. 若全部包裹住產品的運動部件會使得產品失去預定的功能(例如,電動刀),則要帶有一個合適的控制器,并且說明書中要帶有相關的警告語.美國電動類廚房電器安全標準的基本要求-UL982Protection against personal injuryOFF position shall be visually indicated 產品的OFF位置應能容易讓使用者目視判斷.Actuator for an interlock shall be located that unintended operation is unl

30、ikely. 互鎖機構應防止使用者誤觸發(fā). Operation in normal use shall not inconvenience the operator so as to encourage deliberated defeat of an interlock正常使用時應使操作者便于操作, 使得操作者不會故意破壞互鎖機構. Interlock should not be capable of being defeated by food material互鎖機構應不會被器具正常使用時積聚起來的食物破壞掉. Interlock shall not be capable of bein

31、g defeated互鎖機構應不會被輕易破壞.美國電動類廚房電器安全標準的基本要求-UL982Surface Temperatures表面溫度During the temperature test, a temperature on the surface of an appliance that may be contacted by the user shall be not more than the value indicated in following form:美國電動類廚房電器安全標準的基本要求-UL982Appliances器具Blender攪拌器prevent cuttin

32、g assembly from disengaging from container during any normal operation position. 攪拌機切削組件應可靠裝配，防止在任何正常工作位置切削組件從攪拌容器中掉出來. open-top container of a blender shall provided with a cover having one or more openings, each opening having dimension = 25.4mm攪拌器的開口容器應帶有一個單孔或多孔的蓋子,其尺寸不能大于2-5/8”(66.7mm)，而不小于1”(25

33、.4mm); 但對于用來倒水的蓋子上的邊緣孔,其尺寸可以小于25.4mm.A blender container shall not break or crack during normal use正常使用過程中，攪拌容器不應破裂, 可以通過打冰塊測試來驗證.For CSA standard (CSA C22.2 No.195): 要求容器頂部到產品的刀片位置的最小距離為150 mm.美國電動類廚房電器安全標準的基本要求-UL982Appliances器具Blender攪拌器 To determine if a glass blender container complies with 30.

34、4.6, open top or closed top, three blender containers shall be conditioned and tested as follows: a) Each of the glass containers under test shall be lightly abraded with 150 grit silicon carbide sandpaper. Both the internal and external surfaces shall be scuffed laterally and vertically. b) After t

35、he container is abraded, the entire assembly (container, cutter assembly, jar nut, etc.) shall be assembled and heated until thermal saturation to 55C (130F) in either an aircirculating oven or in a hot water bath. c) The container assembly shall be removed and immediately filled with a mixture of 2

36、 cups ice cubes and 8 fl oz. alcohol (vodka). Ice cubes must be approximately the size to enclose a 1-in (25-mm) cube. The ice cubes and alcohol shall be maintained, separately, at a temperature of -5C (23F) or less prior to the test. The ice cubes and alcohol, when moved from storage, are to be use

37、d within 5 minutes. d) The mixture shall be pulsed five (5) times on highest speed. Each pulse shall consist of 3 seconds on followed by 3 seconds off.美國電動類廚房電器安全標準的基本要求-UL982Appliances器具Food processor/food chopper食物處理器具Average inside diameter of the feed opening must 76.2mm,and the cutters are rece

38、ssed not less than 4 Inches below the plane of the opening. If the average inside diameter is reduced to 2 Inches, the distance may be less than 88.9 mm. 進料孔的平均直徑要小于63.5mm，最大直徑不能大于76.2mm, 并且刀片要在離開口平面102mm.(如果進料孔的平均直徑不大于50.8mm, 則刀片只要離開口平面88.9mm).Discharge chute should also comply with the feed openin

39、g dimensions requirements出渣口也需要滿足進料孔的尺寸要求, 除非無任何危險的運動部件可以觸及到.Should provided with a cover actuated interlock食物處理機應帶有蓋子互鎖裝置，防止不小心碰到運動部件. When the cover is removed, the moving parts shall stop within 4 seconds當取下蓋子，運動部件在4秒內必須停止.If the cover can actuate the interlock switch without the cover being prop

40、erly locked in place any access opening to moving parts that can be created by the misalignment shall have a maximum vertical dimension of not more than 1 inch (25.4 mm) between the bowl and cover. A force of 1 lbf (4.4 N) is to be employed to move the cover.如果沒有將蓋子鎖到位的情況下能驅動互鎖開關，則運動部件任何開口在碗與蓋子之間的垂直

41、方向最大尺寸應不大于1”(25.4 mm)。用一個1 lbf（4.4N）的力來撥動蓋子. 美國電動類廚房電器安全標準的基本要求-UL982Appliances器具Food processor/food chopper食物處理器具S-blade and slicing blade shall provide with stems, finger holes, handles or the like for insertion and removal如果食物加工機帶S刀片及切刀組合件，則刀片應帶刀桿，手指孔，手指位，手柄等，防止在裝拆刀片時將手指刮傷.The interlock system sh

42、all be capable of completing 10,000 cycles of operation in the intended manner without malfunction.互鎖裝置應能工作10,000次而無誤動作。在開始測試時及測試完成后，其停止時間均應不超過4秒. 美國電動類廚房電器安全標準的基本要求-UL982Appliances器具Coffee mill/咖啡豆磨機Should provided with a cover actuated interlock食物處理機應帶有蓋子互鎖裝置，防止不小心碰到運動部件. When the cover is removed

43、, the moving parts shall stop within 4 seconds當取下蓋子，運動部件在4秒內必須停止.If the cover can actuate the interlock switch without the cover being properly locked in place any access opening to moving parts that can be created by the misalignment shall have a maximum vertical dimension of not more than 1 inch (

44、25.4 mm) between the bowl and cover. A force of 1 lbf (4.4 N) is to be employed to move the cover.如果沒有將蓋子鎖到位的情況下能驅動互鎖開關，則運動部件任何開口在碗與蓋子之間的垂直方向最大尺寸應不大于1”(25.4 mm)。用一個1 lbf（4.4N）的力來撥動蓋子The interlock systemshall be capable of completing 6,000 cycles of operation in the intended manner without malfunctio

45、n.互鎖裝置應能工作6,000次而無誤動作。在開始測試時及測試完成后，其停止時間均應不超過4秒.美國電動類廚房電器安全標準的基本要求-UL982Appliances器具Coffee grinder 咖啡研磨機For the feed opening, the diameter is less than 2-1/2 inches (63.5 mm) or maximum diagonal dimension of the opening is less than 3 inches (76.2 mm), and the maximum extremity of a moving part that

46、 can cause injury to persons is recessed not less than 3-1/2 inches (88.9 mm) from the nearest edge of the plane of the opening;進料孔的直徑要小于63.5mm，或最開口尺寸小于76.2mm, 并且刀片要在離開口平面88.9mm.For the discharge opening, 1)The diameter is less than 2-1/2 inches (63.5 mm) or the maximum diagonal dimension of the ope

47、ning is less than 3 inches (76.2 mm), and the maximum extremity of a moving part that can cause injury to persons is recessed not less than 3-1/2 inches (88.9 mm) from the nearest edge of the plane of the opening; 2) A guard or guards are provided to limit the maximum width of the opening to 3/8 inc

48、h (9.5 mm) at the point of exposure to the risk of injury to persons, and the closest point of a moving part that can cause injury to persons is recessed at least 1/4 inch (6.4 mm) from the nearest edge of the guards where it limits the opening to 3/8 inch (9.5mm); 美國電動類廚房電器安全標準的基本要求-UL982Appliances

49、器具Coffee grinder 咖啡研磨機For the discharge opening (contd) 3) A guard is used to automatically cover the opening when the discharge container removed. 4) The discharge opening is in the horizontal plane, its diameter is less than 2-1/2 inches (63.5 mm) or the maximum diagonal dimension is less than 3 i

50、nches (76.2 mm) and the distance from a moving part that can cause injury to persons to the nearest edge of the plane of the opening is not less than 2 inches (50.8 mm). A 3/8 inch (9.5 mm) diameter rod is not to contact a moving part that can cause injury to persons when it is inserted into the ope

51、ning a distance of 3- 1/2 inches (88.9 mm) or less.美國電動類廚房電器安全標準的基本要求-UL982Appliances器具Vegetable shredders/slicers 切菜機A hopper feed opening shall be a maximum of 3 inches (76.2 mm); Moving parts shall be a minimum of 4 inches (101.6 mm) below the plane of the throat of the opening. 用于手動裝料的漏斗頸部及其它任何開

52、口的內徑必須 76.2 mm，能對人體造成傷害的運動部件應位于開口頸部平面下方 101.6 mm.例外：如果漏斗頸部的平均內徑小于50.8 mm，則運動部件與開口頸部平面的距離可降低到88.9 mm.For a vegetable shredder/slicer provided with a discharge chute, the discharge chute shall comply with the feed-opening requirements對帶有出渣孔的切菜機，其出渣孔應符合進料孔要求.A vegetable shredder/slicer shall be provide

53、d with a cover-actuated interlock which complies with the requirements切菜機產品必須提供一個蓋子起動的互鎖保護裝置， 且這個裝置需要滿足：互鎖裝置應能工作10,000次而無誤動作。在開始測試時及測試完成后，其停止時間均應不超過4秒. 美國電動類廚房電器安全標準的基本要求-UL982Appliances器具centrifugal juicers 離心式榨汁機A hopper feed opening shall be a maximum of 3 inches (76.2 mm); Moving parts shall be

54、a minimum of 4 inches (101.6 mm) below the plane of the throat of the opening. 用于手動裝料的漏斗頸部及其它任何開口的內徑必須 76.2 mm，能對人體造成傷害的運動部件應位于開口頸部平面下方 101.6 mm.例外：如果漏斗頸部的平均內徑小于50.8 mm，則運動部件與開口頸部平面的距離可降低到88.9 mm.A centrifugal juicer shall be provided with an interlock to restrict access to the juicing disk. The int

55、erlock system shall be capable of completing 6000 cycles of operation in the intended manner without malfunction.離心式榨汁機產品需要提供一個互鎖保護裝置，該裝置必須能經受6000個循環(huán)的耐久性測試，測試后應功能正常。測試條件：產品在無載條件，最高速度下進行，同時保證產品電機的線圈溫度不超過正常工作狀態(tài)下所獲得的最大溫度.美國電動類廚房電器安全標準的基本要求-UL982CONSTRUCTIONSummaryQuestions & answer美國電動類廚房電器安全標準的基本要求-UL

56、982Performance產品性能要求Leakage current test泄漏電流測試 0.5mA for either portable or fixed applianceThe meter is to have an input impedance of 1500 ohms resistive shunted by a capacitance of 0.15 f.美國電動類廚房電器安全標準的基本要求-UL982PerformanceInput test輸入功率測試The power input of an appliance was measured when the applia

57、nce is operated under a condition of max. normal load輸入功率測試要在產品最大正常負載條件下進行. Max. normal load is considered to be that load which approx. as closely as possible the most serve conditions of normal useThe measured input in watts or amperes to an appliance may be less than the marked rating by an amoun

58、t greater than the deviation shown in following form if the temperature rises are not exceeded when the appliance is subjected to an additional temperature test when loaded to nameplate rating產品的輸入功率可以低于下表的要求， 但是必須得經受產品在額定值下面的溫升測試的要求.美國電動類廚房電器安全標準的基本要求-UL982PerformanceMax. normal loadFood mixerOpera

59、ted for a total of 15 minutes in the intended manner, involving all speed setting, and with a load material representing the actual service conditions總工作時間15分鐘，每個速度下面的工作時間如下Time at each speed, T =(15/2N-1) minN means no. of speed settingsBlending mixer10 cycles of operation, each cycle consisting of

60、 3 min of operation followed by a minute off period10個操作循環(huán)，3分鐘“ON”， 1分鐘“OFF”; 對于點動式的開關 則為1分鐘“ON”， 1分鐘“OFF”; Loaded with a mixture of diced carrots & water in ratio 2:3負載是水和胡蘿卜的3：2混合物, 對于低檔則用水為負載.Dimension of diced carrot pieces胡蘿卜尺寸:Half with dimension 12.7mm and 1/2 horsepowera）對馬達功率1/2 hp的器具,為（100