1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA SSL 6-2010Solid State Lighting for Incandescent Replacement DimmingNEMA Standards Publication SSL 6-2010, Errata April 2011 Solid State Lighting for Incandescent ReplacementDimming Published by National Electrical Manufactur
2、ers Association 1300 North 17th Street, Suite 1752 Rosslyn, Virginia 22209 Approved February 3, 2011 www.nema.org Includes April 2011 Errata Copyright 2010 by the National Electrical Manufacturers Association. All rights including translation into other languages, reserved under the Universal Copyri
3、ght Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American Copyright Conventions. NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the development and
4、approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. National Electrical Manufacturers Association (NEMA) standards and guideline publications, of which the d
5、ocument contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While NEMA administers the process and establishes
6、rules to promote fairness in the development of consensus, it does not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims li
7、ability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty,
8、 expressed or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manuf
9、acturer or sellers products or services by virtue of this standard or guide. In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or
10、entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by thi
11、s publication may be available from other sources, which the user may wish to consult for additional views or information not covered by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or insp
12、ect products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health or safetyrelated information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. SSL 6
13、-2010 Page i Copyright 2010 by the National Electrical Manufacturers Association. CONTENTS Foreword ii Section 1 General 1 1.1 Scope . 1 1.2 Normative References . 1 1.3 Informative References . 1 1.4 Definitions 1 Section 2 Requirements to Prevent Damage to Dimmers . 5 2.1 Inrush Current 5 2.2 Cont
14、inuous Operating Current . 5 2.3 Voltage Ring-Up 5 2.4 Current Ring-Up . 5 Section 3 Requirements to Prevent Damage to Dimmable Integrated LED Lamps. 6 3.1 Volt-Amperes Withstand 6 3.2 Amperes Withstand . 6 3.3 Asymmetric Voltage Withstand 6 Section 4 Dimming Performance System Requirements 7 4.1 Ma
15、nufacturer-Provided Information . 7 4.2 Off State . 7 4.3 Transition from Off to On (Dimmed) 7 4.4 Transition from On (Dimmed) to Standby 7 4.5 Maximum Light Output when Operated on a Dimmer . 8 4.6 Light Output at Minimum Dimming Level of the LED Lamp 8 4.7 Adjusting Between Maximum Light and Minim
16、um Light 8 4.8 Steady Light Level Between Maximum and Minimum . 10 4.9 Quiet Operation . 10 4.9.1 Audible Noise . 10 4.9.2 Current Crest Factor 10 4.10 Off State Power Consumption . 10 Figures Figure 1 Example Dimming Curve 3 Figure 2 Definitions Diagram for Voltage 4 Figure 3 Light Output Curves 9
17、SSL 6-2010 Page ii Copyright 2010 by the National Electrical Manufacturers Association. Foreword The NEMA Lighting Controls and Solid State Lighting sections have prepared this standards publication, Solid State Lighting for Incandescent ReplacementDimming. This standard provides interface requireme
18、nts for dimming control, focusing on integrated LED lamps intended for replacement of general service incandescent lamps. Because it addresses the installed base of incandescent dimmers, this document cannot and does not provide dimmer requirements. In the preparation of this standards publication,
19、input of users and other interested parties has been sought and evaluated. Inquiries, comments, and proposed or recommended revisions should be submitted to the concerned NEMA product subdivision by contacting: Vice President, Technical Services National Electrical Manufacturers Association 1300 Nor
20、th 17th Street, Suite 1752 Rosslyn, Virginia 22209 Section approval of the standard does not necessarily imply that all section members voted for its approval or participated in its development. At the time the standard was approved, the Solid State Lighting Section was composed of the following mem
21、bers: Amerlux Global Lighting Solutions Atlas Lighting Products, Inc. Cooper Industries plc Cree, Inc. Dialight Corporation EiKO, Ltd. EYE Lighting International of N.A., Inc. GE Hatch Transformers, Inc. Hubbell Incorporated LEDnovation, Inc. Leviton Manufacturing Co., Inc. Luminus Devices, Inc. Lut
22、ron Electronics Company, Inc. MaxLite Nichia America Corporation Osram Sylvania Inc. Philips Lighting Company Ruud Lighting Inc. Schneider Electric Soraa Inc. Technical Consumer Products, Inc. TerraLUX Inc. Toshiba International Corporation Universal Lighting Technologies At the time the standard wa
23、s approved, the Lighting Controls Section was composed of the following members: Acuity Brands Lighting Cooper Industries plc GE Hubbell Incorporated Legrand North America Leviton Manufacturing Co., Inc. Lutron Electronics Company, Inc. Osram Sylvania Inc. Philips Lighting Company RAB Lighting Schne
24、ider Electric Universal Lighting Technologies In April 2011, errata was published to the standard. In 4.6, “40 degrees or greater” was changed to “40 degrees or less.”SSL 6-2010 Page 1 Copyright 2010 by the National Electrical Manufacturers Association. Section 1 GENERAL 1.1 SCOPE This standards pub
25、lication provides interface recommendations for dimming control of integrated LED lamps intended for replacement of general service incandescent lamps operating at 120 volts, i.e., for operation with the majority of installed incandescent dimmers. LED lamps intended for operation at 12 volts are not
26、 covered by this standard. 1.2 NORMATIVE REFERENCES The following normative documents contain provisions, which through reference in this text constitute provisions of this standards publication. By reference herein these publications are adopted, in whole or in part as indicated, in this standards
27、publication. NEMA 410 Performance Testing for Lighting Controls and Switching Devices with Electronic Fluorescent Ballasts 1.3 INFORMATIVE REFERENCES ANSI/IESNA RP-16-10 Nomenclature and Definitions for Illuminating Engineering IESNA Lighting Handbook, Ninth Edition, 2000, Chapter 6 ENERGY STAR Prog
28、ram Requirements for Integral LED Lamps, v1.1, amended March 22, 2010 UL 1472 Solid-State Dimming Controls UL 8750 Light Emitting Diode (LED) Light Sources for Use in Lighting Products IEEE PAR 1789 Recommended Practices of Modulating Current in High Brightness LEDs for Mitigating Health Risks to Vi
29、ewers 1.4 DEFINITIONS Crest factor: Ratio of peak current to rms current drawn by the lamp, over a line cycle in steady state. Dead travel: A range of dimmer settings that produce the same light output. Refer to Figure 1. Dimmer setting: Adjustment to the incandescent dimmer intended to achieve a va
30、lue of perceived light output, and results in a particular value root-mean-square voltage phase cut of the ac signal applied to the lamp. A dimmer setting of unity corresponds to the maximum light output that can be requested. A dimmer setting of zero corresponds to the minimum non-off light output
31、that can be requested. Flicker: Unintended, perceivable modulation of light output. Forward phase: Phase description of wave-form for phase-cut dimmers that apply line voltage sometime after the zero cross until the subsequent zero cross. Most commonly obtained in triac-based dimmers. Incandescent d
32、immer: Phase-cut dimmer intended for incandescent lamps. SSL 6-2010 Page 2 Copyright 2010 by the National Electrical Manufacturers Association. Inrush current: Peak current drawn by the lamp at start up. Maximum light output: State when the lamp produces maximum light output, typically when applied
33、voltage is near 120 Vrms. Minimum light output: State when voltage is applied to the lamp and the lamp produces lowest non-zero light output. Monotonic dimming: Starting from any dimmer setting, increase (decrease) in the dimmer setting does not result in decrease (increase) of the light output. Off
34、 state: When no voltage is applied to the lamp, and the lamp produces no light. On-time: Duration of a half-line-cycle for which line voltage is applied to the lamp. Perceived light output: Proportional to the square root of the lamp lumen output. Phase angle: Conduction time (measured across the la
35、mp terminals) of the switching element (e.g., triac or MOSFET) from the leading or trailing edge of the zero cross of the applied mains voltage, multiplied by line frequency and 360 degrees. See Figure 2 for sign convention. For the avoidance of doubt, zero phase angle would correspond to zero volta
36、ge being applied to the lamp, 180 degree phase angle would correspond to full line voltage being applied to the lamp, and 90 degree phase angle would correspond to the leading edge of applied voltage occurring at the peak of the line voltage. Increasing the phase angle corresponds to increasing on-t
37、ime, and increasing rms voltage applied to the lamp. Phase-cut dimmer: Lighting control that reduces relative applied voltage by turning on and off the applied voltage during each half-cycle. Pop-on: Lowest dimmer setting above minimum at which the lamp transitions from off to dimmed. Definition als
38、o applies to lowest preset level at which the lamp transitions between off and dimmed. Refer to Figure 1. Preset level: Relative lumen output at which a dimmer is turned on. Relative applied voltage: Applied root-mean-square voltage divided by the nominal rated root-mean-square voltage. Relative lum
39、en output: Measured lumen output at applied voltage or phase-cut, divided by measured lumen output at nominal rated voltage. Ring up: Resonance that can occur between capacitance of a self-ballasted lamp and inductance of a dimmer. Shimmer: See Flicker. Smooth dimming: A small change in phase angle
40、results in a proportional change in perceived light output. Standby mode: State when voltage is applied to the lamp but the lamp produces zero output. Dimmers may have a standby mode. Integrated LED lamps intended for incandescent replacement do not intentionally have a standby mode. Triac-based dim
41、mer: Phase-cut dimmer that uses a semiconductor device called a triac to switch on the applied voltage. SSL 6-2010 Page 3 Copyright 2010 by the National Electrical Manufacturers Association. Withstand: Exposure does not compromise reliability. Dimming rangeHigh End LevelLow End LevelLight output lev
42、elDimmer settingdimmer conduction time, phase angle,mechanical position of knob or VRMSPop-on light levelNon-monotonicdimmingTypical driver outputPop-on settingDead travel at Low End LevelDead travel at High End LevelOff stateDIMMING CURVEFigure 1 Example Dimming Curve SSL 6-2010 Page 4 Copyright 20
43、10 by the National Electrical Manufacturers Association. Figure 2 Definitions Diagram for Voltage SSL 6-2010 Page 5 Copyright 2010 by the National Electrical Manufacturers Association. Section 2 REQUIREMENTS TO PREVENT DAMAGE TO DIMMERS The requirements in this section apply for 120 VAC nominal line
44、 voltage. 2.1 INRUSH CURRENT Individual dimmable integrated LED lamps shall limit peak inrush current according to NEMA 410. 2.2 CONTINUOUS OPERATING CURRENT The total number of dimmable integrated LED lamps shall not exceed, at any dimmer setting, the continuous operating current capability of the
45、dimmer, using the following values: Parameter All Incandescent Dimmers Maximum Continuous Operating Current (A rms) Maximum Wattage rating / 120 2.3 VOLTAGE RING-UP When operated on a phase-cut dimmer, at all control settings the voltage across the dimmer terminals shall be less than the following v
46、alues: Parameter All Incandescent Dimmers Maximum Repetitive Peak Voltage (V) 200 INFORMATIVE NOTEThe repetitive peak voltage often occurs from ring up from choke inductors in the incandescent dimmer (typical value 30 microhenries) and bus capacitors in the load electronics (typical value 10 microfa
47、rads). 2.4 CURRENT RING-UP When operated on a phase-cut dimmer, at all control settings and with the total number of lamps to be operated on a single dimmer, the current through the lamp terminals of the dimmer shall be less than the following values: Parameter Incandescent Dimmer 600W Incandescent
48、Dimmer 600W Maximum Repetitive Peak Current (A) 9 15 INFORMATIVE NOTEAn incandescent lamp operates at a lower temperature when dimmed and this causes the resistance of the lamp to decrease. The point at which the current will peak in value occurs at approximately 60 volts rms or at a conduction time
49、 of 3 ms. This behavior is the same for either a leading or trailing edge dimmer as this is a function of the lamp filament. For a 600 watt dimmer, this repetitive peak current value would be 9 amps, corresponding to a half-cycle I2 t of about 0.1 A2 s. SSL 6-2010 Page 6 Copyright 2010 by the National Electrical Manufacturers Association. Section 3 REQUIREMENTS TO PREVENT DAMAGE TO DIMMABLE INTEGRATED LED LAMPS The requirements in this section apply for 120 VAC nominal line voltage. 3.1 VOLT-AMPERES WITHSTAND When operated on a dimmer, a dimmable integrated LED la
