1、 2016 Standard for Air-conditioning, Heating and Refrigerating Equipment Nameplate Voltages AHRI Standard 110 Price $10.00 (M) $20.00 (NM) Copyright 2016, by Air-Conditioning, Heating, and Refrigeration Institute Printed in U.S.A. Registered United States Patent and Trademark Office IMPORTANT SAFETY
2、 RECOMMENDATIONS It is strongly recommended that the product be designed, constructed, assembled and installed in accordance with nationally recognized safety requirements appropriate for products covered by this standard. AHRI, as a manufacturers trade association, uses its best efforts to develop
3、standards employing state-of-the-art and accepted industry practices. However, AHRI does not certify or guarantee safety of any products, components or systems designed, tested, rated, installed or operated in accordance with these standards or that any tests conducted under its standards will be no
4、n-hazardous or free from risk. Note: This standard supersedes ANSI/AHRI Standard 110-2012. TABLE OF CONTENTS SECTION PAGE Section 1. Purpose 1 Section 2. Scope . 1 Section 3. Definitions. 1 Section 4. Voltage Rating Requirements . 3 Section 5. Equipment Performance Requirements . 8 Section 6. Confor
5、mance Conditions 8 TABLES Table 1. Low Voltage 60 Hz Systems in the USA5 Table 2. Medium Voltage 60 Hz Systems in the USA. 6 Table 3. Standard Nominal System Voltages for 50Hz and 60Hz Systems (Non-USA Systems) 7 Table 4. AC Three Phase Systems with Nominal Voltage Above 1kV and not Exceeding 35kV a
6、t 50Hz and 60Hz (For Non- USA Systems Only) . 8 FIGURES Figure 1. Three-phase Three-wire Voltage Source Ungrounded- Wye. 2 Figure 2. Three-phase Four-wire Voltage Source 2 Figure 3. Three-phase Three-wire Voltage Source - Delta 3 Figure 4. Corner-grounded Voltage Source. . 3 Figure 5. High-leg Volta
7、ge Source . 3 APPENDICES Appendix A. References - Normative 9 Appendix B. References - Informative . 9 AHRI STANDARD 110-2016 1 AIR-CONDITIONING, HEATING AND REFRIGERATING EQUIPMENT NAMEPLATE VOLTAGES Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establish, for air-conditioning,
8、 heating and refrigerating equipment: definitions; voltage rating requirements; equipment performance requirements; and conformance conditions. 1.1.1 Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors, and users. 1.1.2 Revi
9、ew and Amendment. This standard is subject to review and amendment as technology advances. 1.2 The provisions herein are recommendations intended for implementation only through reference by other authoritative documents. Section 2. Scope 2.1 Scope. This standard applies to 50 Hz and 60 Hz electrica
10、l voltage ratings and operating limits as applied to air-conditioning, heating and refrigerating equipment, heat pumps, and electric furnaces as well as components. 2.1.1 Exclusions. Voltages less than 100V AC are not included in this standard. Section 3. Definitions All terms in this document will
11、follow the standard industry definitions in the ASHRAE Terminology website (https:/www.ashrae.org/resources-publications/free-resources/ashrae-terminology) unless otherwise defined in this section. 3.1 Delta. A three-phase transformer coil configuration that is commonly abbreviated by the Greek lett
12、er . 3.2 “Shall“ or “Should.“ “Shall“ or “should“ shall be interpreted as follows: 3.3.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.3.2 Should. “Should“ is used to indicate provisions which are not
13、mandatory but which are desirable as good practice. 3.3 Voltages. 3.3.1 Equipment Nameplate Voltage Rating. The nominal Utilization Voltage marked on the equipment nameplate by the manufacturer (Tables 1 and 2). 3.3.2 Low Voltage. The Nominal System Voltage with the range between 100V and 1kV AC acc
14、ording to ANSI C84.1. 3.3.3 Medium Voltage. The Nominal System Voltage with the range between 1kV and 35kV AC according to IEEE 1585. Note: For the purposes of this standard, 1kV is included under Medium Voltage. 3.3.4 Nominal System Voltage. A nominal value assigned to the electric power supply sys
15、tem for the purpose of conveniently designating its voltage class. AHRI STANDARD 110-2016_ 2 3.3.5 Service Voltage. The voltage at the point where the electric systems of the supplier and the user are connected. 3.3.6 Utilization Voltage. The voltage at the line terminals of the utilization equipmen
16、t. 3.4 Three-phase Systems. 3.4.1 Wye. A three-phase transformer coil configuration that is commonly abbreviated by the letter Y. If a neutral conductor is supplied then it is connected to the center point of the transformer (see Figure 1). Figure 1. Three-phase Three-wire Voltage Source Ungrounded
17、- Wye 3.4.2 Three-phase Four-wire System. A symmetrical voltage source which provides a grounded neutral conductor for connection of loads. The phase-to-neutral voltage amplitudes are 0.577 times the phase-to-phase amplitudes. Four-wire systems in Table 1 are designated by the phase-to-phase voltage
18、, followed by the letter Y, which defines the transformer coil configuration, a slant line, and the phase-to-neutral voltage (see Figure 2). Figure 2. Three-phase Four-wire Voltage Source 3.4.3 Three-phase Three-wire System. A voltage source which only provides three phase conductors to the loads. T
19、he source may be derived from symmetrical, grounded or ungrounded transformer connections (see Figure 3). AHRI STANDARD 110-2016 3 Figure 3. Three-phase Three-wire Voltage Source - Delta 3.4.4 Corner-grounded System. An asymmetrical three-wire voltage source in which one conductor is grounded. For t
20、he remaining phases the phase-to-neutral voltage amplitudes and the phase-to-phase amplitudes are the same (see Figure 4). Figure 4. Corner-grounded Voltage Source 3.4.5 High-leg System. An asymmetrical three-wire voltage source in which a center-tap of one transformer coil is grounded. The phase-to
21、-neutral voltage amplitude of two phases is 0.5 times the phase-to-phase amplitude. The high leg phase amplitude is 0.865 times the phase-to-phase amplitudes (see Figure 5). Figure 5. High-leg Voltage Source Section 4. Voltage Rating Requirements 4.1 Standard System Voltage Relationships. Tables 1,
22、2, and 3 present the basic relationships between standard Nominal System Voltages and Utilization Voltages for air-conditioning, heating and refrigeration equipment and components. (Data derived from ANSI C84.1). AHRI STANDARD 110-2016_ 4 4.2 Application of Voltage Ranges. (See ANSI C84.1). 4.2.1 Ra
23、nge A-Service Voltage. Electric supply systems are designed and operated so that most Service Voltages are within the limits specified for this range. The occurrence of Service Voltages outside of these limits should be infrequent and should be handled as a special occurrence. 4.2.2 Range A-Utilizat
24、ion Voltage. User systems are to be designed and thus must operate acceptably between the minimum and maximum Utilization Voltage Range A. Utilization equipment shall be designed and rated to give acceptable performance throughout this range, per the applicable AHRI Standard. 4.2.3 Range B-Service a
25、nd Utilization Voltages. This range includes Voltages above and below Range A limits that necessarily result from practical design and operating conditions on supply or user systems or both. Although such conditions are a part of practical operations, they are typically limited in extent, frequency
26、and duration. When they occur, corrective measures are typically undertaken within a reasonable time to improve Voltages to meet Range A requirements. Insofar as practical, utilization equipment shall be designed to give acceptable performance in the extremes of this range of Utilization Voltage, al
27、though not necessarily equal performance as in Range A. 4.2.3.1 Exception. For 208V systems only, motor driven equipment shall be designed to start and operate satisfactorily under rated load conditions at the extremes of Range B, but not necessarily under maximum load conditions. For rated and maxi
28、mum load conditions, see the industry standards for the product concerned. It must be recognized that, because of conditions beyond the control of the supplier or user, or both, there will be infrequent and limited periods when sustained Voltages outside of Range B limits will occur. Utilization equ
29、ipment may not operate satisfactorily under these conditions, and protective devices may operate to protect the equipment. When Voltages occur outside the limits of Range B, prompt corrective action is recommended. The urgency for such action will depend upon many factors, such as the location and n
30、ature of load or circuits involved, and the magnitude and duration of the deviation beyond Range B limits. _AHRI STANDARD 110-2016 5 Table 1. Low Voltage 60 Hz Systems in the USA2 Nominal System Voltage, V Nameplate Voltage Marking, V Voltage Range A1 Voltage Range B1 Maximum, V Minimum, V Maximum,
31、V Minimum, V Utilization and Service Voltage Service Voltage Utilization Voltage for Lighting and Power Circuits Servicing Cord-plug Connected Equipment Utilization Voltage (All Other) Utilization and Service Voltage Service Voltage Utilization Voltage for Lighting and Power Circuits Servicing Cord-
32、plug Connected Equipment Utilization Voltage (All Other) 120 115 126 114 110 108 127 110 106 104 208 or 240 208/230 (200/230) 252 197 Not Applicable 187 254 191 Not Applicable 180 208 208 (200) 228 197 191 187 228 191 184 180 240 230 252 228 220 216 254 220 212 208 277 265 291 263 254 249 293 254 24
33、5 240 480 460 504 456 440 432 508 440 424 416 600 575 630 570 550 540 635 550 530 520 Notes: 1) Power systems exist whose operating characteristics deviate from the voltage range limits of this table. It shall not be construed that nameplate voltage rated equipment, suitable for application to such
34、systems and deviating from the values appearing in this table, be produced. 2) Motors are usually guaranteed to operate satisfactorily and to deliver their full power at the rated frequency and at a voltage 10% above or below their rating, or at the rated Voltage. Some U.S. single-phase HVAC compone
35、nts that are dual-voltage rated (e.g., 208/230-1-60) may carry a minus 5% voltage allowance from the lower Voltage rating of 208 volts. Equipment having more than one marked rated Voltage, which is permitted to be connected to these Voltages without individual adjustment, should have the Voltages se
36、parated by a hyphen. Example: 208-230V; The equipment may be operated at these Utilization Voltages or at Voltages between these values without individually adjusting for the difference between them. Equipment having more than one marked rated Voltage, which requires rewiring or other adjustments ma
37、de by the installer to the equipment to permit connection to these Voltages, shall have the Voltages separated by an oblique stroke. Example: 208/230V; The equipment may be operated at these Utilization Voltages only if the installer makes the proper wiring or adjustment to the equipment for each vo
38、ltage as specified by the manufacturer. 4.3 Medium Voltages for 60Hz USA Systems Only. For the standard Nominal System Voltages for 60Hz units for USA systems only, see Table 2. AHRI STANDARD 110-2016_ 6 Table 2. Medium Voltage 60 Hz Systems in the USA Nominal System Voltage, V Nameplate Voltage Mar
39、king, V Voltage Range A Voltage Range B Maximum Minimum Maximum Minimum Utilization and Service Voltage Service Voltage, V Utilization Voltage1, V Utilization and Service Voltage, V Service Voltage, V Utilization Voltage1, V Nominal System Voltage Does not Apply for the Medium Voltage Range. 2340 40
40、50/2340 4050 4680 6730 8110/4680 11700/6760 12160/7020 12870/7430 13460/7770 13460 20260/11700 22290/12870 22430 2520 4370Y/2520 4370 5040 7240 8730Y/5040 12600Y/7270 1309Y/7560 13860Y/8000 14490Y/8370 14490 21820Y/12600 - - 2340 4050Y/2340 4050 4680 6730 8110Y/4680 11700Y/6760 12160Y/7020 12870Y/74
41、30 13460Y/7770 13460 20260Y/11700 22290Y/12870 22430 2160 3740Y/2160 3740 4320 6210 - - - - - 12420 - - - - 2540 4400Y/2540 4400 5080 7260 8800Y/5080 12700Y/7330 13200Y/7620 13970Y/8070 14520Y/8380 14520 22000Y/12700 - - 2280 3950Y/2280 3950 4560 6560 7900Y/4560 11400Y/6580 11850Y/6840 12504Y/7240 1
42、3110Y/7570 13110 19740Y/11400 21720Y/12540 21850 23690Y/13680 2080 3600Y/2080 3600 4160 5940 - - - - - 11880 - - - - - 1) Utilization equipment does not generally operate directly at these Voltages. For equipment supplied through transformers, refer to limits for nominal system voltage of transforme
43、r output. _AHRI STANDARD 110-2016 7 4.4 Nominal Voltages for 50Hz and 60Hz Non-USA Systems Only. For the standard Nominal System Voltages for 50Hz and 60Hz units for non U.S.A. systems only, see Table 3. Table 3. Standard Nominal System Voltages for 50Hz and 60Hz Systems (Non-USA Systems)1 Systems N
44、ominal Frequency, Hz Voltage Highest Supply or Utilization Voltage, V Nominal Voltage, V Lowest Supply Voltage, V Lowest Utilization Voltage, V Nameplate Voltage Marking, V Three-phase Four-wire or Three-wire Systems2 50 254 230 208 198 230 254/440 230/400 208/360 198/344 230/400 440/759 400/690 or
45、380/660 360/621 344/593 400/690 1100 1000 900 860 1000 60 132/229 120/208 108/187 103/179 120/208 264 240, 200, or 220 216 206 240 254/440 230/400 208/360 198/344 230/400 305/528 277/480 249/432 238/413 277/480 528 480 432 413 480 382/660 347/600 312/540 298/516 347/600 660 600 540 516 600 Single-ph
46、ase Three-wire Systems 50 132/264 120/240 or 100/200 108/216 103/206 120/240 60 132/264 120/240 108/216 103/206 120/240 Notes: 1) There are many power systems throughout the world and this table lists the most common. 2) The first number is phase to neutral voltage and the second number is phase to
47、phase voltage. AHRI STANDARD 110-2016_ 8 4.5 AC Three Phase Systems with Nominal Voltage Above 1kV and Not Exceeding 35kV at 50Hz and 60Hz (For Non-USA Systems Only). For AC three phase systems with nominal voltage above 1kV and not exceeding 35kV at 50Hz and 60Hz in the USA only, see Table 4, which was derived from IEC Standard 60038. Table 4. AC Three Phase Systems with Nominal Voltage Above 1kV and not Exceeding 35kV at 50Hz and 60Hz (For Non-USA Systems Only)1,2 Highest Voltage Equipment, kV Nominal System Voltage, kV Nameplate Voltage Marking,
