<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg1.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Subject 1004-1 (1004-2, 1004-3, 1004-4,</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">1004-5, 1004-6, 1004-7, 1004-8, 2788)<span class="blank _0"> </span>May 16, 2014</div><div class="t m1 x1 h3 y3 ff2 fs1 fc0 sc0 ls0 ws1">SUMMARY OF TOPICS</div><div class="t m1 x1 h3 y4 ff2 fs1 fc0 sc0 ls0 ws1">The following topics were discussed at the meeting of the Standards Technical Panel for Motors,</div><div class="t m1 x1 h3 y5 ff2 fs1 fc0 sc0 ls0 ws1">STP 1004-1:</div><div class="t m1 x2 h3 y6 ff2 fs1 fc0 sc0 ls0 ws1">1. Remove the cheesecloth requirement from the locked-rotor temperature and</div><div class="t m1 x2 h3 y7 ff2 fs1 fc0 sc0 ls0 ws1">endurance tests – UL 1004-2 and UL 1004-3</div><div class="t m1 x2 h3 y8 ff2 fs1 fc0 sc0 ls0 ws1">2. Remove requirement for abnormal switch requirements for electronically protected</div><div class="t m1 x2 h3 y9 ff2 fs1 fc0 sc0 ls0 ws1">motors – UL 1004-7</div><div class="t m1 x2 h3 ya ff2 fs1 fc0 sc0 ls0 ws1">3. Revised running heating test for direct drive fan air-over motors – UL 1004-1 and UL</div><div class="t m1 x2 h3 yb ff2 fs1 fc0 sc0 ls0">1004-3</div><div class="t m1 x2 h3 yc ff2 fs1 fc0 sc0 ls0 ws1">4. Revised temperature test method to include SF – UL 1004-1</div><div class="t m1 x2 h3 yd ff2 fs1 fc0 sc0 ls0 ws1">5. Discussion of splice requirements – UL 1004-3</div><div class="t m1 x2 h3 ye ff2 fs1 fc0 sc0 ls0 ws1">6. Discussion of temperature test stabilization requirement – UL 1004-1 and UL 1004-3</div><div class="t m1 x2 h3 yf ff2 fs1 fc0 sc0 ls0 ws1">7. Discussion of making endurance test optional depending on end-use application – UL</div><div class="t m1 x2 h3 y10 ff2 fs1 fc0 sc0 ls0">1004-3</div><div class="t m1 x2 h3 y11 ff2 fs1 fc0 sc0 ls0 ws1">8. Revisions to direct-support material properties for universal motors – UL 1004-1</div><div class="t m1 x2 h3 y12 ff2 fs1 fc0 sc0 ls0 ws1">9. Discussion of expanded voltage limit beyond 7200V (probably 13.4kV or 13.8kV) – UL</div><div class="t m1 x2 h3 y13 ff2 fs1 fc0 sc0 ls0">1004-1</div><div class="t m1 x2 h3 y14 ff2 fs1 fc0 sc0 ls0 ws1">10. Reference to</div><div class="t m0 x3 h4 y15 ff3 fs0 fc0 sc0 ls0">″</div><div class="t m1 x4 h3 y15 ff2 fs1 fc0 sc0 ls0 ws1">Software Class</div><div class="t m0 x5 h4 y15 ff3 fs0 fc0 sc0 ls0">″</div><div class="t m1 x6 h3 y15 ff2 fs1 fc0 sc0 ls0 ws1">in Table 6.1 – UL 1004-7</div><div class="t m1 x2 h3 y16 ff2 fs1 fc0 sc0 ls0 ws1">11. Global Harmonization</div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">A meeting of the Standards Technical Panel of UL for Motors was held on April 16, 2014 at UL’s</div><div class="t m0 x1 h2 y18 ff1 fs0 fc0 sc0 ls0 ws0">Northbrook, IL Off<span class="blank _1"></span>ice. The purpose of the meeting was to discuss various proposals.</div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">The purpose of the STP meeting report is to briefly summarize discussions held during the meeting,</div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0">and to document any resulting outcomes, including planned future action.</div><div class="t m0 x1 h5 y1b ff2 fs0 fc0 sc0 ls0 ws0">CALL TO ORDER, ANNOUNCEMENTS, INTRODUCTION OF MEMBERS, GUESTS, AND</div><div class="t m0 x1 h5 y1c ff2 fs0 fc0 sc0 ls0">OBSERVERS</div><div class="t m0 x1 h2 y1d ff1 fs0 fc0 sc0 ls0 ws0">The Chair of STP 1004-1, Diana Pappas Jordan, called the meeting to order and welcomed the</div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0">participants. The Chair made general announcements regarding the operation of the STP meeting, and</div><div class="t m0 x1 h2 y1f ff1 fs0 fc0 sc0 ls0 ws0">all meeting participants introduced themselves.</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x1 y0 w2 h6" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg2.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x1 h5 y20 ff2 fs0 fc0 sc0 ls0 ws0">ANNOUNCEMENTS AND REPORTS FROM THE STP PROJECT MANAGER</div><div class="t m0 x1 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0">UL’s Patent policy was distributed to the meeting attendees.</div><div class="t m0 x1 h2 y22 ff1 fs0 fc0 sc0 ls0 ws0">The Project Manager of STP 1004-1, Jonette Herman, discussed the balance of the STP. The current</div><div class="t m0 x1 h2 y23 ff1 fs0 fc0 sc0 ls0 ws0">balance of the STP is shown in the following table:</div><div class="t m0 x7 h7 y24 ff2 fs2 fc0 sc0 ls0 ws3">Interest Category<span class="blank _2"> </span>Number of Members<span class="blank _2"> </span>Interest Category<span class="blank _2"> </span>Number of Members</div><div class="t m0 x8 h8 y25 ff1 fs2 fc0 sc0 ls0 ws3">Producers<span class="blank _3"> </span>11 (33.33%)<span class="blank _4"> </span>Government<span class="blank _5"> </span>0 (0%)</div><div class="t m0 x8 h8 y26 ff1 fs2 fc0 sc0 ls0 ws3">Testing & Standards</div><div class="t m0 x8 h9 y27 ff1 fs2 fc0 sc0 ls0 ws4">Organizations <span class="ws3 v1">1 (3.03%)<span class="blank _6"> </span>Consumer<span class="blank _7"> </span>0 (0%)</span></div><div class="t m0 x8 h8 y28 ff1 fs2 fc0 sc0 ls0 ws3">Supply Chain<span class="blank _8"> </span>8 (24.24%)<span class="blank _9"> </span>General Interest<span class="blank _a"> </span>11 (33.33%)</div><div class="t m0 x8 h8 y29 ff1 fs2 fc0 sc0 ls0 ws3">AHJs<span class="blank _b"> </span>1 (3.03%)<span class="blank _6"> </span>Commercial/Industrial User<span class="blank _c"> </span>1 (3.03%)</div><div class="t m0 x1 h2 y2a ff1 fs0 fc0 sc0 ls0 ws0">UL’s goal is to have no interest category comprise more than one-third of the STP membership.</div><div class="t m0 x1 h5 y2b ff2 fs0 fc0 sc0 ls0 ws0">FUTURE MEETING SCHEDULE</div><div class="t m0 x1 h2 y2c ff1 fs0 fc0 sc0 ls0 ws0">Future STP Meetings will be held on an as-needed basis.</div><div class="t m0 x1 h5 y2d ff2 fs0 fc0 sc0 ls0 ws0">AGENDA TOPICS – PROPOSALS AND DISCUSSIONS</div><div class="t m0 x1 h2 y2e ff1 fs0 fc0 sc0 ls0 ws0">For your convenience in review, proposed additions to existing requirements are shown underlined and</div><div class="t m0 x1 h2 y2f ff1 fs0 fc0 sc0 ls0 ws0">proposed deletions are shown lined-out.</div><div class="t m0 x1 h5 y30 ff2 fs0 fc0 sc0 ls0 ws5">1. Remove the cheesecloth requirement from the locked-rotor temperature and endurance tests –</div><div class="t m0 x9 h5 y31 ff2 fs0 fc0 sc0 ls0 ws6">UL 1004-2 and<span class="blank _d"> </span>UL 1004-3</div><div class="t m0 x1 h5 y32 ff2 fs0 fc0 sc0 ls0">RATIONALE</div><div class="t m1 x1 ha y33 ff1 fs1 fc0 sc0 ls0 ws1">Proposal item submitted by: Kirk Anderson, UL LLC</div><div class="t m0 x1 h2 y34 ff1 fs0 fc0 sc0 ls0 ws0">The cheesecloth indicator changes the micro-environment around the motor, which may affect the</div><div class="t m0 x1 h2 y35 ff1 fs0 fc0 sc0 ls0 ws0">effective ambient. This may result in changes to absolute motor temperature in the case of impedance</div><div class="t m0 x1 h2 y36 ff1 fs0 fc0 sc0 ls0 ws0">protected motors and changes of cycle rate in the case of motors using thermal motor protectors.</div><div class="t m0 x1 h2 y37 ff1 fs0 fc0 sc0 ls0 ws0">In addition, cheesecloth can be ignited as a result of sparking and/or arcing for brush type motors,</div><div class="t m0 x1 h2 y38 ff1 fs0 fc0 sc0 ls0 ws0">which does not constitute a failure.</div><div class="t m0 x1 h2 y39 ff1 fs0 fc0 sc0 ls0 ws0">While cheesecloth is used in a variety of other standards as a flame indicator, in these applications,</div><div class="t m0 x1 h2 y3a ff1 fs0 fc0 sc0 ls0 ws0">unlike the motor test, the duration of the test is normally short (e.g. 7 hrs) and the products are not</div><div class="t m0 x1 h2 y3b ff1 fs0 fc0 sc0 ls0 ws0">otherwise monitored (e.g. until ultimate results).</div><div class="t m0 x1 h2 y3c ff1 fs0 fc0 sc0 ls0 ws0">Since the motor requirements require the measuring of temperatures during the locked-rotor</div><div class="t m0 x1 h2 y3d ff1 fs0 fc0 sc0 ls0 ws0">temperature test, and additionally that the motor be operational at the conclusion of the locked-rotor</div><div class="t m0 x1 h2 y3e ff1 fs0 fc0 sc0 ls0 ws0">endurance test, we believe that this addresses the concern that flaming (and subsequent burnout) did</div><div class="t m0 x1 h2 y3f ff1 fs0 fc0 sc0 ls0 ws0">not occur.</div><div class="t m0 x1 h2 y40 ff1 fs0 fc0 sc0 ls0 ws0">Based on this, UL proposes to remove the requirement for motors to be draped with cheesecloth during</div><div class="t m0 x1 h2 y41 ff1 fs0 fc0 sc0 ls0 ws0">the locked-rotor temperature and endurance tests.</div><div class="t m0 x1 h5 y42 ff2 fs0 fc0 sc0 ls0">DISCUSSION</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-2-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x1 y0 w2 hb" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg3.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x1 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0">At the meeting, it was clarified that the cheesecloth requirement applies only to UL 1004-2 and UL</div><div class="t m0 x1 h2 y44 ff1 fs0 fc0 sc0 ls0 ws0">1004-3, and does not apply to any of the other UL 1004 motor series standards since cheesecloth</div><div class="t m0 x1 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0">requirements are not indicated in these other standards. The STP meeting attendees agreed with the</div><div class="t m0 x1 h2 y45 ff1 fs0 fc0 sc0 ls0 ws0">proposals. No additional changes to the proposals were made during the STP meeting. The proposals</div><div class="t m0 x1 h2 y22 ff1 fs0 fc0 sc0 ls0 ws0">will therefore proceed to ballot in the future.</div><div class="t m0 x1 h5 y46 ff2 fs0 fc0 sc0 ls0 ws0">PROPOSAL – UL 1004-2</div><div class="t m0 x1 h2 y47 ff1 fs0 fc0 sc0 ls0 ws7">3.1<span class="blank _10"> </span>A single layer of cheesecloth is to be placed over each of three samples. The cheesecloth is to be</div><div class="t m0 x1 h2 y48 ff1 fs0 fc0 sc0 ls0 ws8">bleached cotton cloth running 14 – 15 square yards per pound (approximately 26 – 28 square meters per</div><div class="t m0 x1 h2 y49 ff1 fs0 fc0 sc0 ls0 ws9">kilogram) and having what is known to the trade as a count of 32 by 28, that is, for any square inch, 32</div><div class="t m0 x1 h2 y4a ff1 fs0 fc0 sc0 ls0 wsa">threads in one direction and 28 threads in the other direction (for any square centimeter, 13 threads in</div><div class="t m0 x1 h2 y4b ff1 fs0 fc0 sc0 ls0 ws0">one direction and 11 in the other direction).</div><div class="t m0 x1 h2 y2a ff1 fs0 fc0 sc0 ls0 ws0">3.6<span class="blank _10"> </span>During the 72 hours, the motor shall comply with all of the following:</div><div class="t m0 x2 h2 y2b ff1 fs0 fc0 sc0 ls0 ws0">a)<span class="blank _10"> </span>The coil temperature shall not exceed the temperature limits specified in Table 3.1.</div><div class="t m0 x2 h2 y2c ff1 fs0 fc0 sc0 ls0 ws0">b)<span class="blank _10"> </span>The fuse in the grounding conductor shall not open.</div><div class="t m0 x2 h2 y2d ff1 fs0 fc0 sc0 ls0 ws0">c)<span class="blank _10"> </span>The motor shall still be capable of operating electrically. For example, a bearing failure is</div><div class="t m0 x2 h2 y4c ff1 fs0 fc0 sc0 ls0 ws0">considered in compliance.</div><div class="t m0 x2 h2 y4d ff1 fs0 fc0 sc0 ls0 ws0">d)<span class="blank _10"> </span>There shall be no flaming as evidenced by the cheesecloth.</div><div class="t m0 x2 h2 y30 ff1 fs0 fc0 sc0 ls0 ws0">e) d)<span class="blank _10"> </span>There shall be no electrical or mechanical malfunction of any associated component parts</div><div class="t m0 x2 h2 y4e ff1 fs0 fc0 sc0 ls0 ws0">such as capacitors.</div><div class="t m0 x2 h2 y4f ff1 fs0 fc0 sc0 ls0 ws0">f) e)<span class="blank _10"> </span>A secondary protector shall not have operated.</div><div class="t m0 x1 h5 y50 ff2 fs0 fc0 sc0 ls0 ws0">PROPOSAL – UL 1004-3</div><div class="t m0 x1 h2 y51 ff1 fs0 fc0 sc0 ls0 wsa">41A.1.1<span class="blank _10"> </span>The rotor is to be locked in a stationary position using a means of low thermal conductivity. A</div><div class="t m0 x1 h2 y52 ff1 fs0 fc0 sc0 ls0 wsb">single layer of cheesecloth is to be placed over the sample. The cheesecloth is to be bleached cotton cloth</div><div class="t m0 x1 h2 y53 ff1 fs0 fc0 sc0 ls0 ws6">running 14 – 15 square yards per pound (approximately 26 – 28 square meters per kilogram) and having</div><div class="t m0 x1 h2 y54 ff1 fs0 fc0 sc0 ls0 wsc">what is known to the trade as a count of 32 by 28, that is, for any square inch, 32 threads in one direction</div><div class="t m0 x1 h2 y55 ff1 fs0 fc0 sc0 ls0 wsd">and 28 threads in the other direction (for any square centimeter, 13 threads in one direction and 11 in the</div><div class="t m0 x1 h2 y56 ff1 fs0 fc0 sc0 ls0 ws0">other direction).</div><div class="t m0 x1 h2 y57 ff1 fs0 fc0 sc0 ls0 ws0">41A.1.3<span class="blank _10"> </span>As a result of this test, the motor shall comply with all of the following:</div><div class="t m0 x2 h2 y58 ff1 fs0 fc0 sc0 ls0 ws0">a)<span class="blank _10"> </span>The coil temperature shall not exceed the temperature limits specified in Table 41A.1.</div><div class="t m0 x2 h2 y59 ff1 fs0 fc0 sc0 ls0 ws0">b)<span class="blank _10"> </span>The fuse in the grounding conductor shall not open.</div><div class="t m0 x2 h2 y5a ff1 fs0 fc0 sc0 ls0 ws0">c)<span class="blank _10"> </span>There shall be no flaming as evidenced by the cheesecloth.</div><div class="t m0 x2 h2 y5b ff1 fs0 fc0 sc0 ls0 ws0">d) c)<span class="blank _10"> </span>There shall be no electrical or mechanical malfunction of any associated component parts</div><div class="t m0 x2 h2 y5c ff1 fs0 fc0 sc0 ls0 ws0">such as capacitors.</div><div class="t m0 x2 h2 y5d ff1 fs0 fc0 sc0 ls0 ws0">e) d)<span class="blank _10"> </span>A secondary protector shall not have operated.</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-3-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x1 y0 w3 hc" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg4.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x2 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0">f) e)<span class="blank _10"> </span>A branch circuit fuse shall not have operated.</div><div class="t m0 x1 h2 y5e ff1 fs0 fc0 sc0 ls0 wse">When examination of the motor windings requires disassembly of the motor, the examination shall be</div><div class="t m0 x1 h2 y5f ff1 fs0 fc0 sc0 ls0 ws0">conducted after the Locked Rotor Endurance Test, Section 41B.</div><div class="t m0 x1 h2 y60 ff1 fs0 fc0 sc0 ls0 ws0">41B.1.2<span class="blank _10"> </span>At the conclusion of the test, the motor shall comply with the following:</div><div class="t m0 x2 h2 y61 ff1 fs0 fc0 sc0 ls0 ws0">a)<span class="blank _10"> </span>There shall be no flaming as evidenced by the cheesecloth.</div><div class="t m0 x2 h2 y48 ff1 fs0 fc0 sc0 ls0 ws0">b) a)<span class="blank _10"> </span>The fuse in the grounding conductor shall not open.</div><div class="t m0 x2 h2 y4a ff1 fs0 fc0 sc0 ls0 ws0">c) b)<span class="blank _10"> </span>The motor shall still electrically operate. For example, a bearing failure is considered in</div><div class="t m0 x2 h2 y4b ff1 fs0 fc0 sc0 ls0">compliance.</div><div class="t m0 x2 h2 y62 ff1 fs0 fc0 sc0 ls0 ws0">d) c)<span class="blank _10"> </span>There shall be no electrical or mechanical malfunction of any associated component parts</div><div class="t m0 x2 h2 y63 ff1 fs0 fc0 sc0 ls0 ws0">such as capacitors or starting relays.</div><div class="t m0 x2 h2 y64 ff1 fs0 fc0 sc0 ls0 ws0">e) d)<span class="blank _10"> </span>A secondary protector shall not have operated.</div><div class="t m0 x2 h2 y65 ff1 fs0 fc0 sc0 ls0 ws0">f) e)<span class="blank _10"> </span>A branch circuit fuse shall not have operated.</div><div class="t m0 x1 h5 y66 ff2 fs0 fc0 sc0 ls0 wsf">2. Remove requirement for abnormal switch requirements for electronically protected motors – UL</div><div class="t m0 xb h5 y67 ff2 fs0 fc0 sc0 ls0">1004-7</div><div class="t m0 x1 h5 y68 ff2 fs0 fc0 sc0 ls0">RATIONALE</div><div class="t m1 x1 ha y69 ff1 fs1 fc0 sc0 ls0 ws1">Proposal item submitted by: Kirk Anderson, UL LLC</div><div class="t m0 x1 h2 y6a ff1 fs0 fc0 sc0 ls0 ws0">Controls relied on for safety are required to undergo a software reliability review (Class B software</div><div class="t m0 x1 h2 y6b ff1 fs0 fc0 sc0 ls0 ws0">review) and/or deviation and drift (evaluation of compliance for controls). The tests required to complete</div><div class="t m0 x1 h2 y6c ff1 fs0 fc0 sc0 ls0 ws0">the software and hardware evaluations automatically include verification that the motor operates as</div><div class="t m0 x1 h2 y6d ff1 fs0 fc0 sc0 ls0 ws0">intended after being subjected to various external conditions and faults, thereby ensuring the signal has</div><div class="t m0 x1 h2 y6e ff1 fs0 fc0 sc0 ls0 ws0">not changed.</div><div class="t m0 x1 h2 y6f ff1 fs0 fc0 sc0 ls0 ws0">Because the investigation for Type 2 safety controls automatically includes confirmation that the signal</div><div class="t m0 x1 h2 y70 ff1 fs0 fc0 sc0 ls0 ws0">to the motor is not adversely affected by external conditioning, UL is proposing the removal of the</div><div class="t m0 x1 h2 y71 ff1 fs0 fc0 sc0 ls0 ws0">requirement to specifically declare the waveform for these types of products.</div><div class="t m0 x1 h5 y72 ff2 fs0 fc0 sc0 ls0">DISCUSSION</div><div class="t m0 x1 h2 y73 ff1 fs0 fc0 sc0 ls0 ws0">The STP meeting attendees supported this proposal and agreed that it was a helpful clarification. No</div><div class="t m0 x1 h2 y74 ff1 fs0 fc0 sc0 ls0 ws0">additional changes to the proposals were made during the STP meeting. The proposal will therefore</div><div class="t m0 x1 h2 y75 ff1 fs0 fc0 sc0 ls0 ws0">proceed to ballot in the future.</div><div class="t m0 x1 h5 y76 ff2 fs0 fc0 sc0 ls0">PROPOSAL</div><div class="t m0 x1 h2 y77 ff1 fs0 fc0 sc0 ls0 ws0">3.2<span class="blank _11"> </span>ABNORMAL SWITCHING – Any aberration from the normal, intended signal being fed to the</div><div class="t m0 x1 h2 y78 ff1 fs0 fc0 sc0 ls0 ws0">motor coils. This includes, but is not limited to, a change in pulse frequency, duty cycle, and timing (i.e.,</div><div class="t m0 x1 h2 y79 ff1 fs0 fc0 sc0 ls0 ws0">overlap, amplitude, and the like).</div><div class="t m0 x1 h2 y7a ff1 fs0 fc0 sc0 ls0 ws10">6.6<span class="blank _10"> </span>The electronic control evaluated by this Standard shall provide freedom from overheating of the motor</div><div class="t m0 x1 h2 y7b ff1 fs0 fc0 sc0 ls0 ws0">caused by the following events:</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-4-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img fetchpriority="low" loading="lazy" class="bi xc y0 w4 hd" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg5.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x2 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0">a)<span class="blank _10"> </span>Locked rotor;</div><div class="t m0 x2 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0">b)<span class="blank _10"> </span>Loss of phase (power supply phase, not motor phase); and</div><div class="t m0 x2 h2 y7c ff1 fs0 fc0 sc0 ls0 ws0">c)<span class="blank _10"> </span>Abnormal switching; and</div><div class="t m0 x2 h2 y7d ff1 fs0 fc0 sc0 ls0 ws0">d) c)<span class="blank _10"> </span>Running heating (at manufacturer’s option and declaration).</div><div class="t m0 xd h5 y7e ff2 fs0 fc0 sc0 ls0 ws0">Table 6.1</div><div class="t m0 xe h5 y7f ff2 fs0 fc0 sc0 ls0 ws0">Motor Control Correlation Table</div><div class="t m0 xf h7 y80 ff2 fs2 fc0 sc0 ls0 ws3">UL 60730-1 Table 7.2DV item number<span class="blank _12"> </span>Information<span class="blank _13"> </span>Motor control requirement</div><div class="t m0 x10 h8 y81 ff1 fs2 fc0 sc0 ls0 ws3">6<span class="blank _14"> </span>Purpose of control<span class="blank _15"> </span>Protective control (temperature)</div><div class="t m0 x10 h8 y82 ff1 fs2 fc0 sc0 ls0 ws3">7<span class="blank _14"> </span>Type of load controlled<span class="blank _16"> </span>AC motor load</div><div class="t m0 x11 h8 y83 ff1 fs2 fc0 sc0 ls0 ws3">29<span class="blank _17"> </span>Type of disconnection or interruption<span class="blank _18"> </span>Any defined</div><div class="t m0 x11 h8 y84 ff1 fs2 fc0 sc0 ls0 ws3">39<span class="blank _17"> </span>Type 1 or Type 2 action<span class="blank _19"> </span>Type 2</div><div class="t m0 x11 h8 y85 ff1 fs2 fc0 sc0 ls0 ws3">40<span class="blank _17"> </span>Additional features<span class="blank _1a"> </span>Must be declared as automatic or</div><div class="t m0 x12 h8 y86 ff1 fs2 fc0 sc0 ls0 ws3">manual reset</div><div class="t m0 x11 h8 y87 ff1 fs2 fc0 sc0 ls0 ws3">49<span class="blank _17"> </span>Pollution degree<span class="blank _1b"> </span>Pollution degree to be determined by</div><div class="t m0 x12 h8 y88 ff1 fs2 fc0 sc0 ls0 ws3">reference to UL 1004-1, 18.9.</div><div class="t m0 x11 h8 y89 ff1 fs2 fc0 sc0 ls0 ws3">52<span class="blank _17"> </span>The minimum parameters of any heat</div><div class="t m0 x13 h8 y8a ff1 fs2 fc0 sc0 ls0 ws3">dissipater (heat sink) not provided with</div><div class="t m0 x13 h8 y8b ff1 fs2 fc0 sc0 ls0 ws3">an electronic control but essential to its</div><div class="t m0 x13 h8 y8c ff1 fs2 fc0 sc0 ls0 ws3">correct operation</div><div class="t m0 x12 h8 y89 ff1 fs2 fc0 sc0 ls0 ws3">Must be specified</div><div class="t m0 x11 h8 y8d ff1 fs2 fc0 sc0 ls0 ws11">53 <span class="ws3 v0">Output waveform if other than</span></div><div class="t m0 x13 he y8e ff1 fs2 fc0 sc0 ls0 ws12">sinusoidal <span class="ws3 v1">Must be specified</span></div><div class="t m0 x14 h8 y8f ff1 fs2 fc0 sc0 ls0 ws3">58a<span class="blank _1c"> </span>Required protection/immunity from</div><div class="t m0 x13 h8 y90 ff1 fs2 fc0 sc0 ls0 ws3">mains borne perturbations, magnetic</div><div class="t m0 x13 h8 y91 ff1 fs2 fc0 sc0 ls0 ws3">and electromagnetic disturbances</div><div class="t m0 x12 hf y8f ff1 fs2 fc0 sc0 ls0 ws13">Required<span class="fs3 v2">a</span></div><div class="t m0 x11 h8 y92 ff1 fs2 fc0 sc0 ls0 ws3">60<span class="blank _17"> </span>Surge immunity<span class="blank _1d"> </span>IEC 61000-4-5 installation Class 3.</div><div class="t m0 x12 h8 y93 ff1 fs2 fc0 sc0 ls0 ws3">Overvoltage category to be determined</div><div class="t m0 x12 h8 y94 ff1 fs2 fc0 sc0 ls0 ws3">by reference to UL 1004-1, 18.9.</div><div class="t m0 x11 h8 y95 ff1 fs2 fc0 sc0 ls0 ws3">69<span class="blank _17"> </span>Software Class<span class="blank _1e"> </span>Software Class B</div><div class="t m0 x11 h8 y96 ff1 fs2 fc0 sc0 ls0 ws3">74<span class="blank _17"> </span>External load and emission control</div><div class="t m0 x13 h9 y97 ff1 fs2 fc0 sc0 ls0 ws3">measures to be used for test purposes<span class="blank _1f"> </span><span class="v1">Intended motor</span></div><div class="t m0 xf h10 y98 ff1 fs3 fc0 sc0 ls1">a<span class="fs2 ls0 ws3 v3">For the purpose of the tests specified in Annex H, Section 26 of UL 60730-1, the products covered by this Standard</span></div><div class="t m0 xf h8 y99 ff1 fs2 fc0 sc0 ls0 ws3">should be considered as:</div><div class="t m0 x15 h8 y9a ff1 fs2 fc0 sc0 ls0 ws3">a)<span class="blank _20"> </span>Installation Class 3 (See Annex R, UL 60730-1);</div><div class="t m0 x15 h8 y9b ff1 fs2 fc0 sc0 ls0 ws3">b)<span class="blank _20"> </span>Overvoltage Category III for controls intended to be permanently wired;</div><div class="t m0 x15 h8 y9c ff1 fs2 fc0 sc0 ls0 ws3">c)<span class="blank _20"> </span>Overvoltage Category II for controls intended to be cord connected; or</div><div class="t m0 x15 h8 y9d ff1 fs2 fc0 sc0 ls0 ws3">d)<span class="blank _20"> </span>Test Level 3.</div><div class="t m0 xc h5 y9e ff2 fs0 fc0 sc0 ls0 ws0">3. Revised running heating test for direct drive fan air-over motors – UL 1004-1 and UL<span class="blank _21"> </span>1004-3</div><div class="t m0 x1 h5 y9f ff2 fs0 fc0 sc0 ls0">RATIONALE</div><div class="t m1 x1 ha ya0 ff1 fs1 fc0 sc0 ls0 ws1">Proposal item submitted by: Kirk Anderson, UL LLC</div><div class="t m0 x1 h2 ya1 ff1 fs0 fc0 sc0 ls0 ws0">Revise the air-over running heating test to remove the increased load requirement if the protector does</div><div class="t m0 x1 h2 ya2 ff1 fs0 fc0 sc0 ls0 ws0">not operate.</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-5-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf6" class="pf w0 h0" data-page-no="6"><div class="pc pc6 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x1 y0 w5 h11" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg6.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x1 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0">The original test was to address the hazards for motors directly coupled to a fan or blower load and</div><div class="t m0 x1 h2 y44 ff1 fs0 fc0 sc0 ls0 ws0">intended to move only air. When we updated the standard to include air-over motors, the test was</div><div class="t m0 x1 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0">modified to account for additional loads that might be present for other motor applications.</div><div class="t m0 x1 h2 y22 ff1 fs0 fc0 sc0 ls0 ws0">In the case of motors directly-coupled to fans, the original test method of operating the motor under a</div><div class="t m0 x1 h2 y23 ff1 fs0 fc0 sc0 ls0 ws0">no-load, no-fan condition is suff<span class="blank _1"></span>icient to address the hazard of the fan lodging free from the shaft.</div><div class="t m0 x1 h2 ya3 ff1 fs0 fc0 sc0 ls0 ws0">Further, a review of test results using the current method (where the load is increased until the protector</div><div class="t m0 x1 h2 y47 ff1 fs0 fc0 sc0 ls0 ws0">operates) did not identify any situations where the additional testing resulted in a non-compliant test</div><div class="t m0 x1 h2 ya4 ff1 fs0 fc0 sc0 ls0">result.</div><div class="t m0 x1 h2 ya5 ff1 fs0 fc0 sc0 ls0 ws0">As a result, UL proposes revising the test method to the no-load, no-fan condition, and removing the</div><div class="t m0 x1 h2 ya6 ff1 fs0 fc0 sc0 ls0 ws0">additional loading requirement for motors specifically intended to be connected to a fan or blower load.</div><div class="t m0 x1 h2 ya7 ff1 fs0 fc0 sc0 ls0 ws0">UL also proposes to delete the flowchart in Figure 41C.1 and replace it with three new flow charts</div><div class="t m0 x1 h2 ya8 ff1 fs0 fc0 sc0 ls0 ws0">depicting workflows for air-over motors, continuous duty motors, and intermittent duty motors.</div><div class="t m0 x1 h5 ya9 ff2 fs0 fc0 sc0 ls0">DISCUSSION</div><div class="t m0 x1 h2 yaa ff1 fs0 fc0 sc0 ls0 ws0">At the meeting, a lengthy discussion ensued on this Topic. There was extensive discussion on the</div><div class="t m0 x1 h2 yab ff1 fs0 fc0 sc0 ls0 ws0">proposed flowcharts and the definitions of <span class="ff3 ws14">″</span>Air-Over Motor<span class="ff3 ws14">″</span><span class="ls2">,</span><span class="ff3 ws14">″</span>Continuous Duty Motor<span class="ff3 ws14">″</span>, and <span class="ff3 ws14">″</span>Intermittent</div><div class="t m0 x1 h2 yac ff1 fs0 fc0 sc0 ls0 ws0">Duty Motor<span class="ff3 ws14">″</span>. During the meeting, the flowcharts were revised, along with the definitions. The revised</div><div class="t m0 x1 h2 yad ff1 fs0 fc0 sc0 ls0 ws0">flowcharts from the STP Meeting have been added to the CSDS Meeting Area as noted in the Proposal</div><div class="t m0 x1 h2 yae ff1 fs0 fc0 sc0 ls0 ws0">description below for UL 1004-3.</div><div class="t m0 x1 h2 yaf ff1 fs0 fc0 sc0 ls0 ws0">It was also discussed that since it is the manufacturer that declares the duty type, then this is what</div><div class="t m0 x1 h2 yb0 ff1 fs0 fc0 sc0 ls0 ws0">should be used to determine which flowchart and requirements to use. However, if a motor is</div><div class="t m0 x1 h2 yb1 ff1 fs0 fc0 sc0 ls0 ws0">considered to be two duty types, such as Continuous Duty and Air-Over Duty, then the Air-Over Duty</div><div class="t m0 x1 h2 yb2 ff1 fs0 fc0 sc0 ls0 ws0">should always take precedence as the duty type.</div><div class="t m0 x1 h2 yb3 ff1 fs0 fc0 sc0 ls0 ws0">It was also suggested that a terminology change be made throughout the standard by changing</div><div class="t m0 x1 h2 yb4 ff3 fs0 fc0 sc0 ls0 ws14">″<span class="ff1 ws15">constant</span><span class="ls2">″</span><span class="ff1 ws0">to </span>″<span class="ff1 ws15">stabilize</span>″<span class="ff1">.</span></div><div class="t m0 x1 h2 yb5 ff1 fs0 fc0 sc0 ls0 ws0">Since several changes were made to the original proposals, these proposals will first be sent out for</div><div class="t m0 x1 h2 yb6 ff1 fs0 fc0 sc0 ls0 ws0">Preliminary Review before proceeding to Ballot. The changes made during the STP meeting are also</div><div class="t m0 x1 h2 yb7 ff1 fs0 fc0 sc0 ls0 ws0">provided below for reference.</div><div class="t m0 x1 h5 yb8 ff2 fs0 fc0 sc0 ls0 ws0">PROPOSAL – UL 1004-1</div><div class="t m0 x1 h2 yb9 ff1 fs0 fc0 sc0 ls0 ws0">5.2<span class="blank _11"> </span>AIR-OVER MOTOR – A motor that relies upon a stream of air to cool the motor and is marked in</div><div class="t m0 x1 h2 y57 ff1 fs0 fc0 sc0 ls0 ws0">accordance with 44.8.</div><div class="t m0 x1 h2 yba ff1 fs0 fc0 sc0 ls0 ws0">5.12<span class="blank _11"> </span>CONTINUOUS DUTY MOTOR – A motor intended to be directly coupled to a load other than a</div><div class="t m0 x1 h2 ybb ff1 fs0 fc0 sc0 ls0 ws0">fan or blower and that is intended to operate indefinitely at rated load.</div><div class="t m0 x1 h2 ybc ff1 fs0 fc0 sc0 ls0 ws0">(No change to definition for <span class="ff3 ws14">″</span>Intermittent Duty Motor<span class="ff3 ws14">″</span>. Shown for reference only.)</div><div class="t m0 x1 h2 ybd ff1 fs0 fc0 sc0 ls0 ws0">5.29<span class="blank _11"> </span>INTERMITTENT DUTY MOTOR – A motor intended to be connected to a load and that is</div><div class="t m0 x1 h2 ybe ff1 fs0 fc0 sc0 ls0 ws0">intended to operate for no longer than a specified time period or for a specified duty-cycle.</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-6-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf7" class="pf w0 h0" data-page-no="7"><div class="pc pc7 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x0 y0 w1 h1" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg7.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x1 h5 y20 ff2 fs0 fc0 sc0 ls0 ws0">PROPOSAL – UL 1004-3</div><div class="t m0 x1 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0">Figure 41C.1 is to be replaced by 3 new Figures depicting the workflows for the following: (1) air-over</div><div class="t m0 x1 h2 y45 ff1 fs0 fc0 sc0 ls0 ws0">motors, (2) continuous duty motors, and (3) intermittent duty motors. To view the workflows, see the</div><div class="t m0 x1 h2 y22 ff1 fs0 fc0 sc0 ls0 ws0">supporting documentation that has been uploaded to the STP 1004-1 Meeting Work Area. (In the Quick</div><div class="t m0 x1 h2 y23 ff1 fs0 fc0 sc0 ls0 ws0">View box on the right side of the Meeting Work Area, select <span class="ff3 ws14">″</span>Supporting Documentation<span class="ff3 ws14">″</span>.)</div><div class="t m0 x1 h2 ya3 ff1 fs0 fc0 sc0 ls0 ws0">The revised flowcharts from the STP Meeting are named as follows: 20140501_Air-over motor flow</div><div class="t m0 x1 h2 y47 ff1 fs0 fc0 sc0 ls0 ws0">chart_1004-3_updated at mtg.pdf, 20140501_Continuous duty motor flow chart_1004-3_updated at</div><div class="t m0 x1 h2 ya4 ff1 fs0 fc0 sc0 ls0 ws0">mtg.pdf, 20140501_Intermittent duty motor flow chart_1004-3_updated at mtg.pdf</div><div class="t m0 x1 h12 ybf ff1 fs4 fc1 sc0 ls0 ws16">This is generated text for figtxt.</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-7-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf8" class="pf w0 h0" data-page-no="8"><div class="pc pc8 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x16 y0 w6 h13" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg8.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x17 h5 y20 ff2 fs0 fc0 sc0 ls0 ws0">Figure 41C.1</div><div class="t m0 x18 h5 y44 ff2 fs0 fc0 sc0 ls0 ws0">Running Heating Temperature Test Procedure</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-8-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pf9" class="pf w0 h0" data-page-no="9"><div class="pc pc9 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x1 y0 w2 h14" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bg9.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x1 h2 y20 ff1 fs0 fc0 sc0 ls0 ws17">41C.2.1<span class="blank _10"> </span>A continuous-duty motor is to be operated under load at its nameplate current as a minimum and</div><div class="t m0 x1 h2 yc0 ff1 fs0 fc0 sc0 ls3 ws18">at the applicable test voltage until the motor winding temperature becomes constant temperatures</div><div class="t m0 x1 h2 y5e ff1 fs0 fc0 sc0 ls0 ws19">stabilize. The protector shall not open when operating at the nameplate current initial load point. The load</div><div class="t m0 x1 h2 yc1 ff1 fs0 fc0 sc0 ls0 ws1a">is then to be increased in small increments to the maximum load that does not result in the protector</div><div class="t m0 x1 h2 y7c ff1 fs0 fc0 sc0 ls0 ws6">opening. Other methods that result in the same objective may be deemed equivalent but in all cases, the</div><div class="t m0 x1 h2 yc2 ff1 fs0 fc0 sc0 ls0 ws0">protector trip must occur under conditions of increasing loading, not decreasing. See Figure 41C.1.</div><div class="t m0 x1 h5 yc3 ff2 fs0 fc0 sc0 ls0 ws0">41C.6<span class="blank _10"> </span>Air-over motors</div><div class="t m0 x1 h2 y48 ff1 fs0 fc0 sc0 ls0 ws1b">41C.6.1<span class="blank _10"> </span>An Any motor marked air-over motor is to be operated under no fan, no load conditions and at</div><div class="t m0 x1 h2 y49 ff1 fs0 fc0 sc0 ls4 ws18">the applicable test voltage. If the protector trips while operating under these conditions, the test is</div><div class="t m0 x1 h2 yc4 ff1 fs0 fc0 sc0 ls0 ws1c">concluded and the winding temperature shall not have exceeded the maximum temperature limits shown</div><div class="t m0 x1 h2 y4b ff1 fs0 fc0 sc0 ls0 ws0">in Table 41A.1.</div><div class="t m0 x1 h2 y62 ff1 fs0 fc0 sc0 ls0 ws1d">41C.6.1.1<span class="blank _10"> </span>If the motor is capable of operating in the no load condition until thermal stabilization occurs,</div><div class="t m0 x1 h2 y63 ff1 fs0 fc0 sc0 ls0 ws1e">then the load is to be increased in small increments to the maximum load that does not result in the</div><div class="t m0 x1 h2 yc5 ff1 fs0 fc0 sc0 ls0 ws1f">protector opening. Other methods that result in the same objective may be deemed equivalent but in all</div><div class="t m0 x1 h2 yc6 ff1 fs0 fc0 sc0 ls0 ws20">cases, the protector trip must occur under conditions of increasing loading, not decreasing. See Figure</div><div class="t m0 x1 h2 yc7 ff1 fs0 fc0 sc0 ls0 ws21">41C.1. Air-over motors intended to be directly coupled to a fan or blower load (direct drive fan motors) are</div><div class="t m0 x1 h2 y65 ff1 fs0 fc0 sc0 ls3 ws22">to be tested under the no fan, no-load condition. If the protector does not operate, the stabilized</div><div class="t m0 x1 h2 yc8 ff1 fs0 fc0 sc0 ls0 ws0">temperatures shall not have exceeded the average temperature limits specified in Table 41A.1.</div><div class="t m0 x1 h2 yc9 ff1 fs0 fc0 sc0 ls0 ws23">41C.6.2<span class="blank _10"> </span>When a motor-protector combination is running with the maximum load/voltage it is capable of</div><div class="t m0 x1 h2 y2f ff1 fs0 fc0 sc0 ls0 ws24">carrying without resulting in the protector opening the circuit, the stabilized winding temperature shall not</div><div class="t m0 x1 h2 yca ff1 fs0 fc0 sc0 ls0 ws25">exceed the values specified in Table 41C.1 plus 10 degrees. For non-direct drive fan motors and if the</div><div class="t m0 x1 h2 y30 ff1 fs0 fc0 sc0 ls0 ws26">motor is capable of operating in the no load condition until thermal stabilization occurs, then the load is to</div><div class="t m0 x1 h2 y4e ff1 fs0 fc0 sc0 ls0 ws27">be increased in small increments to the maximum load that does not result in the protector opening. Other</div><div class="t m0 x1 h2 ycb ff1 fs0 fc0 sc0 ls0 ws23">methods that result in the same objective may be deemed equivalent but in all cases, the protector trip</div><div class="t m0 x1 h2 ycc ff1 fs0 fc0 sc0 ls0 ws0">must occur under conditions of increasing loading, not decreasing.</div><div class="t m0 x1 h2 y50 ff1 fs0 fc0 sc0 ls0 ws28">41C.6.2.1<span class="blank _10"> </span>When a motor-protector combination is running with the maximum load/voltage it is capable of</div><div class="t m0 x1 h2 ycd ff1 fs0 fc0 sc0 ls0 ws24">carrying without resulting in the protector opening the circuit, the stabilized winding temperature shall not</div><div class="t m0 x1 h2 y51 ff1 fs0 fc0 sc0 ls0 ws29">exceed the values specified in Table 41C.1 plus 10 degrees average temperature limits specified in Table</div><div class="t m0 x1 h2 y52 ff1 fs0 fc0 sc0 ls0">41A.1.</div><div class="t m0 x19 h5 y54 ff2 fs0 fc0 sc0 ls0 ws0">4. Revised temperature test method to include SF – UL 1004-1</div><div class="t m0 x1 h5 yce ff2 fs0 fc0 sc0 ls0">RATIONALE</div><div class="t m1 x1 ha ycf ff1 fs1 fc0 sc0 ls0 ws1">Proposal item submitted by: Kirk Anderson, UL LLC</div><div class="t m0 x1 h2 yd0 ff1 fs0 fc0 sc0 ls0 ws0">Rationale for changing the definition:</div><div class="t m0 x1 h2 yd1 ff1 fs0 fc0 sc0 ls0 ws0">Service Factor is used for AC induction motors. It is not commonly applied for generators or DC motors</div><div class="t m0 x1 h2 yd2 ff1 fs0 fc0 sc0 ls0 ws0">and based on this, is being removed to accurately reflect usage.</div><div class="t m0 x1 h2 yd3 ff1 fs0 fc0 sc0 ls0 ws0">Rationale for revising the temperature test:</div><div class="t m0 x1 h2 yd4 ff1 fs0 fc0 sc0 ls0 ws0">Service factor (SF) is used in several industries to indicate a motor is able to operate at a higher load</div><div class="t m0 x1 h2 yd5 ff1 fs0 fc0 sc0 ls0 ws0">without overload or damage.</div><div class="t m0 x1 h2 yd6 ff1 fs0 fc0 sc0 ls0 ws0">Service factor is defined in UL 1004-1 as:</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _f"> </span>-9-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div> <div id="pfa" class="pf w0 h0" data-page-no="a"><div class="pc pca w0 h0"><img fetchpriority="low" loading="lazy" class="bi x1 y0 w7 h15" alt src="https://files.passeidireto.com/8da38d50-db3c-43f3-ae98-cb8f607c2227/bga.png" alt="Pré-visualização de imagem de arquivo"><div class="t m0 x1 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0">In some applications, extremely high service factors have been found (in some cases exceeding 1.6).</div><div class="t m0 x1 h2 y44 ff1 fs0 fc0 sc0 ls0 ws0">Motors with high service factors, when tested using the rated output rating (without the SF multiplier)</div><div class="t m0 x1 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0">may comply with the published temperature limits. However, when the motor is operated at the SF</div><div class="t m0 x1 h2 y45 ff1 fs0 fc0 sc0 ls0 ws0">output will operate at significantly higher temperatures.</div><div class="t m0 x1 h2 y23 ff1 fs0 fc0 sc0 ls0 ws0">Applying the service factor (when present) has been required in UL 1004-5 (fire pump motors) as well</div><div class="t m0 x1 h2 y46 ff1 fs0 fc0 sc0 ls0 ws0">as international standards such as CSA C22.2 No. 100 to ensure products can operate at the declared</div><div class="t m0 x1 h2 ya3 ff1 fs0 fc0 sc0 ls0 ws0">rating and will not overheat when used as reasonably anticipated.</div><div class="t m0 x1 h2 ya4 ff1 fs0 fc0 sc0 ls0 ws0">Based on the fact motors with service factors are expected to be able to operate at the SF output</div><div class="t m0 x1 h2 yd7 ff1 fs0 fc0 sc0 ls0 ws0">without damage or overheating, and to ensure the motor is able to operate at the higher declared</div><div class="t m0 x1 h2 ya5 ff1 fs0 fc0 sc0 ls0 ws0">output, UL proposes including the service factor when conducting the temperature test.</div><div class="t m0 x1 h2 ya7 ff1 fs0 fc0 sc0 ls0 ws0">Further, UL proposes to allow motors with Service Factors equal to or greater than 1.15 to have</div><div class="t m0 x1 h2 ya8 ff1 fs0 fc0 sc0 ls0 ws0">maximum allowable temperatures equal to totally enclosed motors. This follows the approach in CSA</div><div class="t m0 x1 h2 yd8 ff1 fs0 fc0 sc0 ls0 ws0">C22.2 No. 100 where higher service factors are allowed the same temperature rise as totally enclosed</div><div class="t m0 x1 h2 ya9 ff1 fs0 fc0 sc0 ls0">motors.</div><div class="t m0 x1 h5 yaa ff2 fs0 fc0 sc0 ls0">DISCUSSION</div><div class="t m0 x1 h2 yac ff1 fs0 fc0 sc0 ls0 ws0">At the meeting, it was discussed that Service Factors apply to motor loads only and not generators,</div><div class="t m0 x1 h2 yad ff1 fs0 fc0 sc0 ls0 ws0">therefore further revisions were needed to 32.1 to remove the reference to generators. Additional</div><div class="t m0 x1 h2 yae ff1 fs0 fc0 sc0 ls0 ws0">changes were also made to 5.43 and Table 32.1, footnote m, during the meeting.</div><div class="t m0 x1 h2 yaf ff1 fs0 fc0 sc0 ls0 ws0">The STP meeting attendees supported this proposal with the changes as discussed at the meeting. The</div><div class="t m0 x1 h2 yb0 ff1 fs0 fc0 sc0 ls0 ws0">changes made during the STP meeting are also provided below for reference. The revised proposal</div><div class="t m0 x1 h2 yb1 ff1 fs0 fc0 sc0 ls0 ws0">will proceed to ballot in the future.</div><div class="t m0 x1 h5 yd9 ff2 fs0 fc0 sc0 ls0">PROPOSAL</div><div class="t m0 x1 h2 yb4 ff1 fs0 fc0 sc0 ls0 ws0">5.43<span class="blank _11"> </span>SERVICE FACTOR – A multiplier that, when applied to the rated horsepower output of an AC</div><div class="t m0 x1 h2 yda ff1 fs0 fc0 sc0 ls0 ws0">motor a machine, the rated armature current of a DC motor, or the rated output of a generator,</div><div class="t m0 x1 h2 ydb ff1 fs0 fc0 sc0 ls0 ws0">indicates a permissible loading that can be carried continuously at the rated voltage and frequency.</div><div class="t m0 x1 h2 y53 ff1 fs0 fc0 sc0 ls0 ws2a">32.1<span class="blank _10"> </span>The temperature test is to be conducted with the machine under test delivering full rated operating</div><div class="t m0 x1 h2 ydc ff1 fs0 fc0 sc0 ls0 ws2b">power multiplied by any service factor into a resistive load (in the case of generators) or delivering full</div><div class="t m0 x1 h2 y55 ff1 fs0 fc0 sc0 ls0 ws2c">rated mechanical output (in the case of motors). For motors without marked rated output, the motor is to</div><div class="t m0 x1 h2 y56 ff1 fs0 fc0 sc0 ls0 ws0">be loaded, or if necessary the voltage raised, until the motor consumes rated current.</div><div class="t m1 x1 ha y57 ff1 fs1 fc0 sc0 ls0 ws1">Exception No. 1: The temperature test for air-over motors is to be conducted in the end product.</div><div class="t m1 x1 ha y58 ff1 fs1 fc0 sc0 ls5 ws2d">Exception No. 2: Motors marked only with voltage and frequency are not required to undergo the</div><div class="t m1 x1 ha ydd ff1 fs1 fc0 sc0 ls0 ws1">temperature test. See 44.1.</div><div class="t m1 x1 ha ybc ff1 fs1 fc0 sc0 ls0 ws2e">Exception No. 3: Motors having greater than 74.6 kW (100 horsepower) output may alternatively use any</div><div class="t m1 x1 ha y5a ff1 fs1 fc0 sc0 ls6 ws2f">of the methods described in Section 5, Superposition method, of IEC 60034-29, Rotating electrical</div><div class="t m1 x1 ha ybd ff1 fs1 fc0 sc0 ls0 ws30">machines – Part 29: Equivalent loading and superposition techniques – Indirect testing to determine</div><div class="t m1 x1 ha ybe ff1 fs1 fc0 sc0 ls0 ws1">temperature rise.</div><div class="t m2 xa h7 y43 ff2 fs2 fc0 sc0 ls0 ws3">MAY 16, 2014<span class="blank _e"></span>SUBJECT 1004-1<span class="blank _22"> </span>-10-</div></div><div class="pi" data-data="{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}"></div></div>
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