UL1310培训讲义.docx

1、UL1310培训讲义Class 2 Power Units -UL 1310 (5th Edition) (Dated May 3, 2005, Last Revise Date Jan. 31, 2006) -CAN/CSA-C22.2 No. 223-M91 (2nd Edition) (Dated June 1991)Agenda(大綱) Scope (范围) Class 2 Definition (Class 2定义) Key Construction Requirements (结构要求重点) Enclosure/Protective Devices/Coil Insulation/

2、Input Connections/Output Connections /Accessibility of Live Parts/Separation of Circuits/Grounding/Spacing(外壳/保护装置/变压器绝缘/输入连结/输出连结/带电体可接触性 /线路隔离/间距) Key Performance Requirements (测试要求重点) Electrical Tests (电气测试) Mechanical Tests (机构测试) Caution Marking & Instruction (警告标示及使用说明) Relative SPS Standard I

3、nstruction (相关标准简介)Scope (範圍) Indoor and outdoor use Class 2 power supplies and battery chargers for use on alternating current branch circuits with a maximum potential of 150 V to ground.连接于对地最大电压150 V的交流电源上之室内及户外用 Class 2电源适配器及充电器 Portable direct plug-in units provided with 15 A blade configuratio

4、ns for use on nominal 120 or 240 V branch circuits Cord- and plug-connected units provided with a 15 A or 20 A attachment plug configuration(构造) Units permanently connected to the input supplyInput power does not exceed 660 W under any possible condition of output loading (最大输入功率不超过 660W)Class 2 Def

5、inition (Class 2定义)Class 2 Voltage Limitation(Class 2电压限制 ) Voltage Type Indoor-use units Outdoor-use units Sinusoidal, ac 30 V, rms 30 V, rms (UL) Non-sinusoidal, ac 42.4 V, peak 42.4V, peak (UL)Pure dc 60 V (UL) 60 V (UL) Non-sinusoidal ac or dc 42.4 V (CUL) 42.4 V (CUL) Note: For AC Systems - If

6、the product exceeds the 15 V rms and 21.2 V peak; and is not greater 30 V rms and 42.4 V peak; For DC Systems - If the product exceeds the 30 V for continuous dc The product shall be marked as below:US “Class 2 not wet,” “Class 3 wet”Canada “Class 2 not wet,” “Class 1 wet”Max. O/P current for inhere

7、ntly limited units (先天限制的) (30.1)Circuit voltage (Vmax) a,b ac or dc VoltsMax. nameplate ratingsMax. o/p current(I max)c, amperesV-AAmperes0 20Over 20 to 30Over 30 to 60, dc only5.0 X V max1001005.0100/Vmax100/Vmax8.08.0150/Vmaxa V max : Maximum output voltage regardless of load with rated input vol

8、tage applied.b Voltage ranges shown are for sinusoidal alternating current and continuous direct current. For nonsinusoidal alternating current, maximum voltage shall not be greater than 42.4 volts peak. For direct current interrupted at a rate of 10 200 hertz, maximum voltage shall not be greater t

9、han 24.8 volts.c I max is maximum output current regardless of load.The maximum output volt-amperes shall not be more than 100 volt-amperes (最大输出不得超过 100VA)Max. O/P current and VA for not inherently limited units (非先天限制的) (Cl30.2)Circuit voltage (Vmax) a,b ac or dc VoltsMax. nameplate ratingsMax. o/

10、p current(I max)c, amperesMax. o/p VA(VA max)dMax. overcurrent protection rating, AV-AAmperes0 20Over 20 to 30Over 30 to 60, dc only5.0 X Vmax1001005.0100/Vmax100/Vmax1000/Vmax1000/Vmax1000/Vmax250e2502505.0100/Vmax100/Vmaxa V max is the maximum output voltage regardless of load with rated input vol

11、tage applied.b Voltage ranges shown are for sinusoidal alternating current and continuous direct current. For nonsinusoidal alternating current, maximum voltage shall be greater than 42.4 volts peak. For direct current interrupted at a rate of 10 200 hertz, maximum voltage shall not be greater than

12、24.8 volts.c I max is maximum ampere output regardless of load after operation as specified in 30.2.1.d VA max is maximum volt-ampere output regardless of load after operation as specified in 30.2.1.e Maximum volt-amperes is 350 if maximum circuit voltage is 15 or less.Construction (結構)Mechanical As

13、sembly-Direct Plug-In (机构组立-插墙式) (Cl7.11)Mechanical Assembly-Direct Plug-In (机构组立-插墙式)(7.16)Determination of perimeter of units with rounded edgesA = 5.1 mm for UL (Marking for Mounting(固定件)Tab)A = 8.0 mm for CUL (No Mounting Tab)If a mounting tab be provided, the following conditions shall be met:a

14、) Use on a or 15-ampere, 125- 250-volt receptacle (NEMA 1-15R or 5-15R or 6-15 R);b) A screw No. 6 mounting screw (3.5 mm major diameter, 32 threads/inch) is provided and constructed to secure to a duplex (双方的) receptacle that has a center screw;c) For a unit without a grounding pin, the mounting ta

15、b is constructed to be mounted to both grounding and non-grounding receptacles; andd) Marked “CAUTION” and the following or the equivalent:1) “Risk of Electric Shock Disconnect power to the receptacle before installing or removing the unit. When removing receptacle cover screw, cover may fall across

16、 plug pins or receptacle may become displaced;”2) “Use only with duplex receptacle having center screw;” and3) “Secure unit in place by receptacle cover screw”Metal Enclosure (金属外壳 )Indoor use: A sheet metal thickness not less than that in Table 8.1. The thickness of sheet metal other than steel or

17、aluminum shall not be less that than in Table 8.1 for uncoated steel (8.4) Iron and steel parts shall be protected against corrosion (抗蚀)by galvanizing (镀锌), plating (电镀), enameling (上釉), or other equivalent means if the corrosion (侵蚀)of such unprotected parts results in a risk of fire, electric sho

18、ck, or injury to persons (9.1)Outdoor use: A type 3R, 3S, or 4X enclosure evaluated with UL 50 (CCN: CYIV or BGUZ), is not required to be subjected to the Rain Test (56.1) A metallic enclosure shall be protected against corrosion (57.5) Copper, bronze(青铜), and brass(黄铜) containing no less than 80 pe

19、rcent copper, or stainless steel may be used without additional protection against corrosion (57.6)Enclosure (塑料外壳)Indoor use: UL: Flammability (燃烧等级 ):Min. V-2 (UL 94) CUL: Flammability: Min. V-1 (UL 94) Resistance to arcing properties: UL 746C Moisture absorptive propertiesOutdoor use: A type 3R,

20、3S, or 4X enclosure evaluated with UL 50 (CCN: CYIV or BGUZ), is not required to be subjected to the Rain Test An enclosure of a unit shall be constructed to reduce the risk of electric shock due to weather exposure and shall prevent live parts, electrical components, or wiring (not identified (鉴别)f

21、or use while in contact with water) from becoming wetProtective Devices (保护装置) The protective device may be located in either the primary or secondary circuit (可在初级或次级线路 ) Type of protective device: Thermostat, Thermal Cutoff, Positive Temperature Coeffecient (PTC) Resistor, Negative Temperature Coe

22、ffecient (NTC) Resistor, Fuse, Eutectic Material (双合金材料 ) An protective device shall not open when delivering its rated output (正常额定输出时, 保护装置不可做动) A protective device for a not inherently limiting Class 2 power unit shall not be of the automatic reclosing type(自动恢复式) and shall be rated with Table 30

23、.2 and provided in secondary circuitCoil Insulation (变压器线圈绝缘) Any type or thickness of insulation may be used if the coil withstands the induced potential test (13.2.8.b) Tape used as insulation in lieu of (代替)spacing shall provide a continuous 1/32 inch (0.8 mm) minimum wide bent up edge against th

24、e bobbin flanges (使用胶带当绝缘以抵押间距要求则须提供至少 0.8 mm宽的反折) (13.2.3)A flanged, bobbin-wound transformer shall be subjected to the output loading test continued for 15 days if the transformer has: The primary winding wound over the secondary winding or the secondary winding wound over the primary winding; and

25、 The primary winding insulated from the secondary winding by a layer of insulating material other than coil form/bobbin The test is not required to be applied for 15 days if the following requirements are met: Multiple layered winding wire UL 746A, UL 746B, UL 746C Meet spacing requirement Table 24.

26、1, Table 24.2 Alternate spacing UL 840 Triple insulated wiring Subject 2353 (OBJT2)Input Connection (输入连结)Multiple Voltage Rated Power Unit (多输入电压电源适配器)Definition (定义): A power unit with a rated voltage range (such as 100 240 volts) or more than one discrete voltage rating (such as 120/240 volts)Int

27、ended for Use By Travellers (旅行者用电源适配器)Definition (定义): (14.1.4) A multiple voltage rated direct plug-in power unit with a 125 V, 15 A (parallel) input blade configuration, or a multiple voltage rated cord-connected power unit with a non-detachable power supply cord terminating in a 125 V, 15 A (par

28、allel) blade plug Requirements for Intended for Use By Travellers (旅行者用电源适配器的要求): (14.1.4)a) The blade assembly shall be a 125 volt, 15 amp configuration(构造); b) The power unit shall employ a user adjustable (可调整的)voltage selector and comply with Switch Position Test, or be capable of operating at d

29、ifferent voltages without user adjustment;c) The input voltage rating shall include nominal 120 volt;d) The power unit shall be marked as specified in 51.8; ande) The power unit shall be provided with instructions as specified in 54.4 A multiple voltage rated power unit intended for use by travelers

30、 shall be marked as follows with the following or equivalent: (51.8)a) See instruction manual for use in countries other than the U.S.A. orb) “See instructions for input voltage conversion.” orc) “See instructions if the input plug does not fit the power outlet” Instructions shall include (a) - (c)

31、or the equivalent, as appropriate. The items shall be preceded by IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS and DANGER - TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, CAREFULLY FOLLOW THESE INSTRUCTIONS in letters of 1/8 inch (3.18 mm) high or in a readily visible contrasting text (54.4)a) Be sure voltage selector is in correct voltage position before plugging in. The instructions shall also specify the procedures to follow for changing the voltage selectorb) For use in the U.S.A., the voltage s