1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULApril 18, 20021SUBJECT 1107OUTLINE OF INVESTIGATIONFORELECTRIC POWER SWITCHESISSUE NUMBER: 1APRIL 18, 2002COPYRIGHT 2002 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F
2、URTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 18, 2002SUBJECT 11072No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSFOREWORD 4INTRODUCTION1 Scope .52 Components 53 Units of Measurement .54 Undate
3、d References 6CONSTRUCTION5 General 6PERFORMANCE6 General 87 Electrical Rating Test 88 Vibration Test 99 Shock Test .910 Temperature Environmental Test 911 Dielectric Strength Test 1012 Ignition Test 1013 Cycling Test Under Load 10MARKING14 General 11INSTALLATION AND SPECIFICATIONS15 General 11APRIL
4、 18, 2002 SUBJECT 1107 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFOREWORDA. This Outline of Investigation contains basic requirements for products covered by UnderwritersLaboratories Inc. (UL) under its Follow-Up Service for this catego
5、ry within the limitations given below andin the Scope section of this Outline of Investigation. They are subject to revision as further experience andinvestigation may show is necessary or desirable.B. The observance of these requirements by a manufacturer is one of the conditions of the continuedco
6、verage of the manufacturers product.C. A product which complies with the text of this Outline of Investigation will not necessarily be judged tocomply with the Outline of Investigation if, when examined and tested, it is found to have other featureswhich impair the level of safety contemplated by th
7、ese requirements.D. A product that contains features, characteristics, components, materials, or systems new or differentfrom those covered by the requirements in this Outline of Investigation, and that involves a risk of fire orof electric shock or injury to persons shall be evaluated using appropr
8、iate additional component andend-product requirements to maintain the level of safety as originally anticipated by the intent of thisOutline of Investigation. A product whose features, characteristics, components, materials, or systemsconflict with specific requirements or provisions of this Outline
9、 of Investigation does not comply with thisOutline of Investigation. Revision of requirements shall be proposed and adopted in conformance with themethods employed for development, revision, and implementation of this Outline of Investigation.E. UL, in performing its functions in accordance with its
10、 objectives, does not assume or undertake todischarge any responsibility of the manufacturer or any other party. The opinions and findings of ULrepresent its professional judgement given with due consideration to the necessary limitations of practicaloperation and state of the art at the time the Ou
11、tline of Investigation is processed. UL shall not beresponsible to anyone for the use of or reliance upon this Outline of Investigation by anyone. UL shall notincur any obligation or liability for damages, including consequential damages, arising out of or inconnection with the use, interpretation o
12、f, or reliance upon this Outline of Investigation.F. Many tests required by the Outline of Investigations of UL are inherently hazardous and adequatesafeguards for personnel and property shall be employed in conducting such tests.APRIL 18, 2002SUBJECT 11074UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
13、FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 The requirements in this outline of investigation apply to the design, construction, and operatingcharacteristics of electrical power switch devices used in a marine application.1.2 Switch devices covered by this te
14、sting outline are intended to be installed in accordance with theapplicable standards of the American Boat and Yacht Council, Inc., and/or the Fire Protection Standardsfor Motor Craft, NFPA 302.2 Components2.1 Except as indicated in 2.2, a component of a product covered by this outline of investigat
15、ion shallcomply with the requirements for that component.2.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this outline of investigation, orb) Is superseded by a
16、 required in this outline of investigation.2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only und
17、er limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.3 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.APRIL 18, 2002 SU
18、BJECT 1107 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this outline ofinvestigation shall be interpreted as referring to the latest editi
19、on of that code or standard.CONSTRUCTION5 General5.1 The materials used for fabrication and construction of these devices shall be in conformity withaccepted and recommended engineering standards.5.2 Current-carrying parts of the device including terminals, nuts and washers, shall be fabricated of a
20、suitable grade copper, bronze, brass, or other corrosion-resistant metal or alloy having appropriateelectrical properties and be of ample dimension to carry the rated currents without overheating.5.3 Non-metallic materials used for the base, housing, and other parts or the device shall:a) Have adequ
21、ate strength and rigidity to resist the stresses and strains to which they aresubjected in service;b) Be resistant to deterioration by gasoline, oil, salt water, or other materials or agents to whichthe switch are exposed during normal use;c) Be of a material that has sufficient dielectric strength
22、to withstand the test outlined in Section11, Dielectric Strength Test, of this outline; andd) Be capable of normal service within an ambient storage temperature range of -30C (-22F)and an operating ambient temperature of 60C (140F) without failure due to cracking, warpingor softening of parts, that
23、is detrimental to its operation.5.4 Terminals shall be installed so that they are not able to be inadvertently loosened.5.5 The spacing of terminals or other exposed live-metal parts shall conform with the minimum spacingrequirements in Table 5.1.APRIL 18, 2002SUBJECT 11076UL COPYRIGHTED MATERIAL NO
24、T AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 5.1SpacingsMinimum spacingThrough air Over surfaceinch (mm) inch (mm)Between uninsulated live metal parts ofopposite polarity (including cableconnections, etc.)1/2 (12.7) 3/4 (19.1)Between uninsulated live metal par
25、tsand mounting surface or combustiblematerial.3/8 (9.5) 1/2 (12.7)Between uninsulated live metal partsand mounting surface protected withsuitable fire resistant insulating material.1/8 (3.2) 1/4 (6.4)Note: Where the spacing between terminals is less than indicated or where shorting of the cable conn
26、ectors is able to occur, aninsulating barrier of dielectric material shall be provided.5.6 The switch ratings shall be primarily determined on the basis of compliance with the maximumtemperature rises listed in Table 5.2, when subjected to tests as described in Electrical Rating Test,Section 7. Howe
27、ver, a continuous current rating shall not exceed current rating of the largest strandedthermoplastic insulated copper conductor which are able to be properly secured to the terminals withstandard pressure connectors or lugs. The current rating of the conductor shall be based on the NationalElectric
28、al Code, ANSI/NFPA 70, for single conductors or the standards of the American Boat and YachtCouncil, Inc.Table 5.2Maximum temperature rise above from ambientParts and materials C (F)1. Operating handle (plastic and wood) 60 (140)2. Operating handle (ceramics) 45 (113)3. Operating handle (metal) 35 (
29、95)4. Housing (plastic, wood, ceramics) 65 (149)5. Housing (metal) 50 (122)6. Terminals (external) 100 (212)Note: All values for temperature rises are based on an assumed ambient temperature of approximately 25C (77F).5.7 Selector switch devices intended for multiple selection of circuits from gener
30、ators shall be sodesigned to avoid current interruption of operating generators.5.8 Manually operated switch devices shall be provided with detents or other suitable means to indicatecorrect positioning of the switch.5.9 Remotely operated switch devices shall be provided with a positive means of ind
31、icating the switchposition at the control station.APRIL 18, 2002 SUBJECT 1107 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.10 All potential sources of ignition shall be enclosed or otherwise protected as to prevent the ignition offlammab
32、le vapors or gases which surround the device in service. It is not intended to require that thedevice be explosion-proof as that term is defined by the National Electrical Code. All switches intendedfor installation in potentially hazardous locations, shall be capable of passing the Dielectric Stren
33、gth Testin Section 11.5.11 Provisions shall be made for rigid independent mounting by means of screws or bolts. Screws andbolts used for this purpose shall be positioned to avoid current leakage from current carrying parts of thedevice or cable connectors.PERFORMANCE6 General6.1 Switch devices shall
34、 comply with the following tests without failure. For purposes of these tests, themanufacturer shall provide two (2) production samples which are picked at random from stock. Samplesused for testing shall include all parts required for normal operation, including remote controls.6.2 One sample shall
35、 be used for a construction examination, and the second sample shall be subjectedto the tests described in Sections713.7 Electrical Rating Test7.1 Using a suitable power source and resistive load capable of sustaining the required current, connectthe devices in series with one conductor so that the
36、required test current passes through the switchcontacts.7.2 With the switch contacts under test (closed), connect the power source (AC or DC) and adjust theload so that the switch contacts carry 110 percent of its continuous current rating. This current shall bemaintained for a period of one (1) hou
37、r. During the test period, temperature readings shall be taken at thecontrol handle, the terminals and at various points around the device housing. Temperatures recordedshall not exceed the values listed in Table 5.2.7.3 After the device cools, a current equal to 110 percent of the intermittent rati
38、ng or 150 percent of thecontinuous rating, whichever is greater, shall be applied. The current shall be applied for a continuous five(5) minute period while the temperature rise of the control knob, housing, and terminals are monitored.7.4 Temperature rises shall not exceed those listed in Table 5.2
39、.APRIL 18, 2002SUBJECT 11078UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL8 Vibration Test8.1 The device used in the electrical rating test shall be mounted to a suitable wooden test fixture so thatthe device shall be in its normal operating
40、 position during the test. The assembly is to be secured to thesurface of a vibration machine. Electrical connections are to be made to a power source with a loadadjusted to draw 110 percent of the continuous current rating of the switch contacts.8.2 The device, including all controls is to be vibra
41、ted for a period of twelve (12) hours; four (4) hours ineach of the x, y, and z planes. The vibration table shall be set at 0.020 inches double amplitude. Thevibration machine shall be continuously cycled between 10 to 60 back to 10 Hz at a uniform cycle rate offour (4) minutes per cycle. During the
42、 final hour of vibration in each plane, current at 110 percent of thedevices continuous amperage rating shall be applied. Temperature rises should not exceed therecommended maximums listed in Table 5.2.9 Shock Test9.1 The device used in the previous test, secured to the same test fixture, with the s
43、ame electricalconnections, shall be secured to the surface of a shock table in its normal operating position with a 1/8inch (3.2 mm) shim under one corner.9.2 The device shall be subjected to a minimum of 5000 vertical impacts of 10 g having a duration of20 25 milliseconds measured at the base of th
44、e half sine wave shock envelope. Following the test, acurrent equal to 110 percent of the continuous rating shall be applied for a time period sufficient for thedevice to reach temperature equilibrium. The temperature of critical areas should not exceed the limitsestablished in Table 5.2.10 Temperat
45、ure Environmental Test10.1 Place the device in a cold chamber at -30C (-22F) for a period in excess of 24 hours. Immediatelyupon removal from the cold chamber, the device shall be mechanically operated and within 5 secondssubjected to shock by dropping the unit from a height of 3 feet (1 m) on a 3/4
46、 inch (19.1 mm) plywoodflooring.10.2 Place the same device in an air circulating oven maintained at 60C (140F) for a period in excessof 24 hours. Immediately upon removal from the oven the device shall be mechanically operated andchecked for softening and physical deformation.10.3 Minor chipping of
47、edges or minor deformation of the outer housing which does not destroy the vaporseals of the enclosure or impair operation, meets the intent of the test.APRIL 18, 2002 SUBJECT 1107 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL11 Dielectric
48、 Strength Test11.1 The device used in the temperature environmental test shall be subjected to these tests. AC and DCtests shall be conducted at normal ambient temperature as shown in Table 11.1.Table 11.1Dielectric strength testVoltage rating Potential plus twice rated voltageDC AC115 Volts and Les
49、s 2,000 1,000115 to 250 Volts 2,500 1,500Potentials will be applied between 1. The various terminals with switch in open or off position.2. Each current carrying terminals and any metallic noncurrent carrying parts of the device with the switch contacts in thevarious positions.3. Terminals and the mounting screws or bolts.4. Terminals and any control wire on remotely operated units.11.2 The DC electrical leakage shall not exceed 2 microamperes. There shall be no arc-overs in the ACtests.12 Ignition Test12.1 An electric power switch intended for use in an area
