1、Subject 508 12 Laboratory Drive Research Triangle Park, NC 27709 July 28, 2000 TO: Industry Advisory Conference of UL for Industrial Control Equipment, Electrical Council of Underwriters Laboratories Inc., Subscribers to ULs Standards Service for Industrial Control Equipment SUBJECT: Request for Com
2、ments on Proposed Requirements for the Seventeenth Edition of the Standard for Industrial Control Equipment, UL 508; PROPOSED EFFECTIVE DATES SUMMARY OF TOPIC This bulletin proposes the following change in requirements: Manual Self-Protected Combination Motor Controllers COMMENTS DUE: September 22,2
3、000 Attached as Appendix A for your review and comment are proposed requirements for UL 508. Questions regarding interpretation of requirements should be directed to the responsible UL Staff. Please see Appendix B of this bulletin regarding designated responsibility for the subject product categorie
4、s. Please note that proposed requirements are of a tentative and early nature and are for review and comment only. Current requirements are to be used to judge a product until these requirements are published in final form. PRODUCTS AND INDUSTRIES AFFECTED BY THE PROPOSAL UL requests your assistance
5、 in identifying other products or industries that might be affected by the requirements contained in this bulletin. UL suggests that all suppliers or customers for these products and industries be made aware of these requirements prior to their proposed effective date. Also, please forward your sugg
6、estions to UL so that these products and industries may be identified in future bulletins. PROPOSED EFFECTIVE DATES SUBJECT 508 -2- JULY 28,2000 Reference Number 76.3.1 77.5 88.2.2 Proposed Effective Date 24 months after publication 24 months after publication 24 months after Dublication 88.2.3 I 24
7、 months after publication 88.2.4 24 months after publication The remainder of these will not necessitate a review or additional testing of currently Listed or Recognized products. Therefore, UL proposes that the remainder of these requirements become effective upon publication. REQUESTS FOR COMMENTS
8、 ON PROPOSALS Please provide the following: 1. Your comments concerning the proposed requirements; and 2. Your comments concerning the proposed effective dates, should the proposals be adopted. Written comments should be sent by regular mail, fax, or e-mail to the attention of Warren Casper at ULs R
9、esearch Triangle Park office, P.O. Box 13995, Research Triangle Park, NC 27709-3995. Please reference all correspondence to Subject 508. If you respond by fax or e-mail, please include your full name and company address to ensure a reply. All comments should be sent by September 22, 2000. Unless spe
10、cifically requested to do so, UL will not acknowledge comments indicating concurrence with these proposals. UNDERWRITERS LABORATORIES INC. REVIEWED BY: WARREN CASPER Associate Project Engineer Staff Engineer Standards Department RESEARCH TRIANGLE PARK NORTHBROOK OFFICE CHUCK GOETZ (Ext. 43163) Confo
11、rmity Assessment Services 301 8ANBK (91 9) 549-1 543 FAX: (91 9) 547-61 85 (847) 272-8800 FAX: (847) 509-6258 e-mail: Christopher.W.Casper Q us. SR:JH bul-20000407 SUBJECT 508 -Al - JULY 28,2000 APPENDIX A PROPOSED REQUIREMENTS AND PROPOSED EFFECTIVE DATES FOR THE SEVENTEENTH EDITION OF THE STANDAR
12、D FOR INDUSTRIAL CONTROL EQUIPMENT, UL 508 For your convenience in review, proposed additions to existing requirements are shown underlined and proposed deletions are shown thed-e b) A description of a manual self-protected combination motor controller. “A manual self- protected combination motor co
13、ntroller is a self-protected combination motor controller that is operable only by manual means. A manual self-protected combination motor controller is also evaluated with one or more load side motor controllers operable by remote control means. The manual self-protected combination motor controlle
14、r is marked to identify suitable field installed motor controllers or is supplied together with the motor controller. The assembly is identified as a “self-protected combination motor controller“ or as a “combination motor controller“.“; and c) The product name, “Manual Self-protected Combination Mo
15、tor Controller“ or “Man. Self-protected Comb. Mtr. Cntlr.“ IMPACT The proposed 76.3.1, 77.5, 88.2.2, 88.2.3 and 88.2.4 represent new requirements for Listed manual self-protected combination motor controllers. Listed manual self-protected combination motor controllers will need to be evaluated to th
16、ese requirements and found suitable for use with one or more designated motor controllers. They will also need to be provided with additional markings to reflect their intended use. As such, currently Listed manual self-protected combination motor controllers will be subject to review and retesting.
17、 As the remaining proposed requirements provide new requirements for Type F combination motor controllers and clarify other requirements for combination motor controllers, no review or retest will be necessary. UL proposes that these revisions become effective upon publication. PROPOSALS 2.4 COMBINA
18、TION CONTROLLER - An open or enclosed device containing both a magnetic or solid- state controller and a disconnecting means. The controller may or may not contain overload protection, short circuit protection, or both. Where an individual controller is enclosed, it includes an external means for op
19、erating the disconnecting means. 3 2.4 revised (date of publication) 2.5 COMBINATION MOTOR CONTROLLER - A provides a disconnectina means. branch circuit fshort-circuit and around fault) protection. motor controller. and motor overload protection. In addition, where an individual controller is enclos
20、ed, it includes means for locking the disconnecting device in the “OFF“ position. controller intended for motor service that 2.5 revised (date of publication) SUBJECT 508 See Sections 63 - 65 sepmte-Overload relay with redaceable current elements incorporating replaceable modules xeeph+Type E Short
21、circuit current ratinq TvDes A-D marked with ”Combination Motor Controller - Type E construction, marked -A5- B F B F F B B F - - B F JULY 28,2000 Manual TvDe E marked ”Manual Self-Protected Combination Motor Controller” TvDe E assemblv marked ”Self-Protected Combination Motor Controller” TvDe F ass
22、emblv marked ”Combination Motor Controller” (Only affected pari of Table 67.1 shown) - B - F - B - F - B - F Table 67.1 Marking location for industrial control equipment Revised Table 67.1 effective July 16, 2001 Required markinga I Marking reference I Locationb Enclosed I ODen 88.1.1 88.1.2 88.2 88
23、.2.1 88.2.3 88.2.4 I_ Construction Tvr,e A I ”Self-Protected Combination Motor Controller” Table 76.2 Construction requirements for combination motor controllers Table 76.2 revised (date of publication) Construction equirements, Paraarar, hs 76.4 - 76.8 CornDonenta Manual Disconnect Fuse Magnetic or
24、 Solid State Motor Controller Overload Relav Component Standard Comr,onent Function Disconnect Branch Motor Motor Circuit Control Overload Protection UL 98 or UL UL 508 UL 508 X X X X Table 76.2 Continued on Next Page SUBJECT 508 -A6- JULY 28,2000 Table 76.2 Continued Construction equirements, Parag
25、raphs Construction Type Component Standard Componenta Component Function Disconnect Branch Motor Motor Circuit Control Overload Protection X X B 76.4 - 76.8 Manual Disconnect UL 98 or UL 1087 UL 508 Motor Short- Circuit Protector Magnetic or Solid State Motor Controller Overload Relav UL 508 X UL 50
26、8 X C 76.4 - 76.8 I nve rse-Ti me Circuit Breaker UL 489 X X X UL 508 Magnetic or Solid State Motor Controller Overload Relav UL 508 X D 76.4 - 76.9n: ntaneous-Trip Circuit Breaker UL 489 X X Magnetic or Solid State Motor Controller UL 508 X Overload Relav UL 508 X Eb 76.3.1 - 76.6, 76.8 - 76.1 3 Se
27、lf-Protected Control Device UL 508 X X X X - F - X - X - X X - Manual Self- Protected Com bination Controller Maanetic or Solid State - Motor Controller UL 508 76.3.1- 76.9 UL 508 i Tests are conducted on the individual components per the applicable requirements from the UL Standards in the table. S
28、ee 76.1 1. SUBJECT 508 -A7- JULY 28,2000 76.3.1 A manual self-txotected combination motor controller that is not oi3erable bv remote control shall complv with the construction requirements in 76.4 - 76.6 and 76.8 - 76.13. Added 76.3.1 effective (24 months after publication) 77.1 A combination motor
29、controller, constructed as Type A - D, or F as specified in Table 76.2, and having individual replaceable components that comply with the appropriate requirements for that component or have been investigated in this application, shall also be subjected to the applicable tests specified in Table 77.4
30、. Exception: Individual components are not required to be subjected to the tests in Table 77.4 when previously evaluated. 77.1 revised (date of publication) Table 77.4 Sequence of tests for Types A,B,C, Da and E combination motor controllers Table 77.4 revised (date of publication) 2 Voltage 80 With
31、stand a All tests or any combination of test sequences are able to be conducted on a single sample when agreeable to those concerned. When more than one rating is being tested, more than one sample is able to be used. One sequence is not required to be completed as a prerequisite to the starting of
32、another. 77.5 A manual self-protected combination motor controller that is not operable by remote control shall comply with the performance requirements for Type E self-protected controllers while installed as an individual controller. The manual self-protected combination motor controller shall be
33、additionally evaluated for use with a motor controller that is operable by remote control, such as a contactor, in accordance with the performance requirements for: SUBJECT 508 -A8- JULY 28,2000 a) A Type E self-protected controller and marked as in 88.2.3; or b) A Type F combination motor controlle
34、r and marked as in 88.2.4. Added 77.5 effective (24 months after publication) . 78.1 A Type B,D or E combination motor controller shall withstand currents of 600 percent and 1 O00 percent of full-load motor current without damage to any parts or connected wires that would impair their function. Soft
35、ening of wire insulation is not Drohibited however. aee and b) The interrupting short circuit test described in 82A.1, 82A.2, and 82A.4 - 82A.7 shall be applied to the instantaneous trip circuit breaker of a Type D combination motor controller. Exception: For an instantaneous circuit breaker that ha
36、s already been evaluated with the Standard for Molded Case Circuit Breakers, Molded-Case Switches, and Circuit Breaker Enclosures, UL 489,without burnout of the trip coils, the interrupting short circuit test is not required. 82.1 revised (date of publication) Table 88.1 Marking requirements for com
37、bination motor controllers Table 88.1 revised (date of publication) A 88.1 88.1.1 88.1.3 - 88.2 - - - - 88.3 88.4 - - B Construction twes C D 88.1 88.1.1 88.1.3 - 88.2 - - - - - - 88.5 88.6 E 88.1 - 88.1.2 88.1.3 - 88.2.1 88.2.2 88.2.3 - - - 88.5 - c Table 88.1 Continued on Next Page SUBJECT 508 A -
38、 - -Ag- F - - - 88.7 - - - 88.8 88.8 88.8 B C D E - JULY 28,2000 Table 88.1 Continued 88.1 A combination motor controller shall comply with the marking requirements in Sections 63 - 65. A buIIen-k Table 88.1 summarizes the applicable marking requirements for the various constructions of combination
39、motor controllers. ,. Exception: tz, ,- 88.1 revised (date of publication) 88.1.1 A combination motor controller incorporating an overload relay with replaceable current elements, shall additionally be provided with markings indicating the rating or other designation of the protective device to be u
40、sed with each overload-relay current element, and the range of full-load motor current. 88.1.1 added (date of publication) 88.1.2 A Type E combination motor controller (self-protected control device) that incorporates interchangeable modules shall be marked with the modules that can be used. 88.1.2
41、added (date of publication) 88.1.3 A combination motor controller shall be marked “Short Circuit Current Rating, _ Amperes rms Symmetrical, Volts Maximum“, or the equivalent. The marked short circuit ampere and voltage rating shall not be more than the value for which the controller was tested in ac
42、cordance with 52.1.1 or Table 51.3, whichever is applicable. 88.1.3 added (date of publication) 88.2 A Twe A. B. C. or D combination motor controller shall be marked “Combination Motor Controller 88.2 revised (date of publication) 88.2.1 A Type E combination motor controller shall be marked “Self-Pr
43、otected Combination Motor Controller“ 2 88 2 Revised 88.2.1 effective July 16, 2001 SUBJECT 508 -Al 0- JULY 28,2000 88.2.2 A manual Type E combination motor controller shall be marked “Manual Self-protected Combination Motor Controller“. Added 88.2.2 effective (24 months after publication) 88.2.3 An
44、 assembly evaluated to the performance requirements for a Type E combination motor controller as described in 77.5, consisting of a manual Type E combination motor controller and a motor controller, shall be marked “Self-Protected Combination Motor Controller“. When the individual components of the
45、assembly are shipped separately, the manual self-protected combination motor shall be marked as in 88.2.2 and additionally with “Self-Protected Combination Motor Controller when used with -(A)-“, where (A) is replaced with: a) The manufacturers name and part number of the load side component; or b)
46、“Motor Controllers Marked For Use With This Component“, or the equivalent. When the manual self-protected combination motor controller is marked as in 88.2.3(b), each other component of the evaluated assembly shall be marked “Suitable For Use On The Load Side Of -(B)- Manual Self-protected Combinati
47、on Motor Controller“, or the equivalent, where (B) is replaced with the manufacturers name and part number of the manual self-protected combination motor controller. Added 88.2.3 effective (24 months after publication) 88.2.4 An assembly evaluated to the performance requirements for a Type F combina
48、tion motor controller as described in 77.5, consisting of a manual Type E combination motor controller and a motor controller, shall be marked “Combination Motor Controller“. When the individual components of the assembly are shipped separately, the manual self-protected combination motor shall be m
49、arked as in 88.2.2 and additionally with “Combination Motor Controller when used with -(A)-“, where (A) is replaced with: a) The manufacturers name and part number of the load side component; or b) “Motor Controllers Marked For Use With This Component“, or the equivalent. When the manual self-protected combination motor controller is marked as in 88.2.4(b), each other component of the evaluated assembly shall be marked “Suitable For Use On The Load Side Of -(B)- Manual Self-protected Combination Motor Controller“, or the equivalent, where (B) is replaced with the manufacture
