1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60730-2-6Automatic Electrical Controls Part 2-6: Particular Requirements for Automatic ElectricalPressure Sensing Controls Including Mechanical RequirementsUL COPYRIGHT
2、ED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60730-2-6Automatic Electrical Controls Part 2-6: Particular Requirements for Automatic Electrical PressureSensing Controls Including Mechanical RequirementsThird EditionEdition Dat
3、e: December 22, 2016This new edition of ANSI/UL 60730-2-6 adopts the third edition of IEC 60730-2-6 with nationaldifferences.This document provides a single listing of the National Differences included in the UL adoption ofthe corresponding IEC standard.All rights reserved. No part of this publicati
4、on may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.UL provides this standards document as is without warranty of any kind, either expressed or implied,including but not
5、 limited to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liable for any special, incidental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinabilit
6、y to use this standards document, even if UL or an authorized UL representative has been advisedof the possibility of such damage. In no event shall ULs liability for any damage ever exceed the pricepaid for this standards document, regardless of the form of the claim.Users of the electronic version
7、s of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purcha
8、sers computer system.Copyright 2016 Underwriters Laboratories Inc.DECEMBER 22, 2016NATIONAL DIFFERENCES FOR UL 60730-2-62UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National D
9、ifferences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, UL uses the notations indicated below to identify national difference type, andthese types are additionally noted in this document. The standard may not use all types of thesedeviations.D1 - These are
10、 deviations which are based on basic safety principles and requirements, elimination ofwhich would compromise safety for U.S. consumers and users of products.D2 - These are deviations based on safety practices. These are deviations for IEC requirements that maybe acceptable, but adopting the IEC req
11、uirements would require considerable retesting or redesign on themanufacturers part.DC - These are deviations based on the component standards and will not be deleted until a particularcomponent standard is harmonized with the IEC component standard.DE - These are deviations based on editorial comme
12、nts or corrections.DR - These are deviations based on the national regulatory requirements.Each national difference contains a description of what the national difference entails. Typically one of thefollowing words is used to explain how the text of the national difference is to be applied to the b
13、ase IECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause, table, figure,or annex. Addition is not meant to include adding select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause, table
14、,figure, or annex without any replacement text.Modification / Modify - A modification is an altering of the existing base IEC text such as the addition,replacement or deletion of certain words or the replacement of an entire clause, subclause, table, figure,or annex of the base IEC text.DECEMBER 22,
15、 2016 NATIONAL DIFFERENCES FOR UL 60730-2-6 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences1.1DV D2 Modification of the first paragraph of 1.1 of the part 2 by adding the following:This part of IEC 60730 applies to automa
16、tic electrical pressure SENSING CONTROLS for use in,on or in association with, equipment. The equipment may use electricity, gas, oil, solidfuel, solar thermal energy, etc. or a combination thereof.4.3.1.101DV D2 Modification of 4.3.1.101 of the part 2 by adding the following note:NOTE The number of
17、 cycles and cycle rates specified in Tables AA.1DV and AA.101DV apply for independentlymounted, integrated and incorporated pressure controls.Table 1DV D2 Replacement of Table 1 of the part 2:Table 1DVRequirement Information Clause or subclause MethodModification:Replace the following items by:6 Pur
18、pose of control 2.2.101 to 2.2.103,4.3.5, 6.3D26 Number of cycles of ACTUATION (M) for eachMANUAL ACTION101A)6.10, Annex AA X27 Number of automatic cycles (A) for eachAUTOMATIC ACTION101A)6.11, Annex AA X34 Not applicable37 See additional notes102A), 103A)4, 15, 17 X44 Not applicable48 Operating pre
19、ssure104A)2.3.11 D(or pressures) 15Additional items: 18101 PRESSURE MEDIUM 2.3.101 X102 OPERATING DIFFERENTIAL 2.3.26 D103 MAXIMUM WORKING PRESSURE 2.3.29 D104A A low voltage (0 30 volt) cut-out to be wiredwith NEC Class 1 wiring methodsD105A Date code of manufacturing forINDEPENDENTLY MOUNTED CONTR
20、OLS105A)CAddition to Note 4:For pressure sensing controls, limits of activating quantity are specified either in the applicable household appliancepart 2, by the appliance manufacturer or as declared by the pressure sensing control manufacturer (see 17.7 and 17.8).Additional notes:101A)The minimum n
21、umber of cycles for independently mounted, integrated and INCORPORATED CONTROLS areindicated in Annex AA.102A)For Type 2 controls, the required deviations and DRIFT tolerances are indicated in Table AA.101DV.103A)Deviation and DRIFT applies to a SPDT cutout terminal which is de-energized on pressure
22、 rise.DECEMBER 22, 2016NATIONAL DIFFERENCES FOR UL 60730-2-64Table 1DV Continued on Next PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 1DV (Continued)Requirement Information Clause or subclause Method105A)The date code shall be the
23、 date or other dating period of manufacture not exceeding any three consecutivemonths. The date of manufacture may be abbreviated; or may be in a nationally accepted conventional code or in acode affirmed by the manufacturer, provided that the code:a) Does not repeat in less than 20 years, andb) Doe
24、s not require reference to the product records of the manufacturer to determine when theproduct was manufactured.11.6.101DV D2 Addition to the part 2:If the function or calibration of the control is affected by being placed out of level, thecontrol shall be provided with a leveling indicator such as
25、 a bubble, pendulum, or ahorizontal or vertical line. When attached as intended, the control shall resist a torque of11,3 Nm (8,5 lbfft) without moving.11.6.102DV D2 Addition to the part 2:If a control requires a mounting bracket to conform to this standard, the bracket shall befurnished with the co
26、ntrol. The bracket shall be marked with a part number and its useshall be indicated on the control. This marking may be placed inside the control COVER.11.11.103DV.1 DE Modification of 11.11.103 of the part 2 by adding the following noteafter the first paragraph:NOTE Unsafe leakage of a hazardous fl
27、uid is the leakage of a fluid due to failure of any part of the control thatwould result in a risk of injury to persons.11.11.103DV.2 DE Modification of 11.11.103 of the part 2 by adding the following noteafter the third paragraph:NOTE These requirements do not apply to a seal, diaphragm or gasket t
28、hat is resistant to the action of thesensed fluid.11.11.104DV D2 Addition of 11.11.104DV.1 11.11.104DV.10 to the part 2:11.11.104DV.1 After being subjected to the conditions described in 11.11.104DV.2 11.11.104DV.4, a brass part containing more than 15 percent zinc shall show no evidenceof cracking
29、when examined using 25X magnification.11.11.104DV.2 Each test sample is to be subjected to the physical stresses normallyimposed on or within a part as the result of assembly with other components. Suchstresses are to be applied to the sample prior to and maintained during the test. Sampleswith thre
30、ads, intended to be used for installing the product in the field, are to have thethreads engaged and tightened to the torque specified in Table 11.11.104DV.2.1. Teflontape or pipe compound are not to be used on the threads.Table 11.11.104DV.2.1 D2 Addition to the part 2:DECEMBER 22, 2016 NATIONAL DI
31、FFERENCES FOR UL 60730-2-6 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 11.11.104DV.2.1 Torque requirements for threaded connectionsNominal thread size, inches Torque N m (lb ft)1/8 27 (20)1/4 34 (25)3/8 50,8 (37,5)1/2 67,8 (50)3/4 1
32、01,7 (75)1 135,6 (100)1-1/4 163,8 (121)1-1/2 175,1 (129)2 186,4 (137)2-1/2 197,7 (146)3 203,4 (150)11.11.104DV.3 Three samples are to be degreased and then continuously exposed in a setposition for 10 days to a moist ammonia-air mixture maintained in a glass chamberapproximately 305 by 305 by 305 mm
33、 (12 by 12 by 12 inch) having a glass COVER.11.11.104DV.4 Approximately 600 mL of aqueous ammonia having a specific gravity of0,94 is to be maintained at the bottom of the glass chamber below the samples. Thesamples are to be positioned 38,1 mm (1-1/2 inch) above the aqueous ammonia solutionand supp
34、orted by an inert tray. The moist ammonia-air mixture in the chamber is to bemaintained at atmospheric pressure and at a temperature of 34 2C (91 4F).11.11.104DV.5 An elastomeric part shall be in accordance with the requirements for theAccelerated Air Oven Aging Test in the Standard for Gaskets and
35、Seals, UL 157.11.11.104DV.6 An elastomeric part intended to be in contact with LP-Gas, manufacturedand natural gases, fuel oils and kerosene or gasoline shall be in accordance with therequirements for the Immersion Test in the Standard for Gaskets and Seals, UL 157.11.11.104DV.7 A cut-out or limiter
36、 incorporating a transformer, relay, or the like shall besupplied by a one-side grounded system with a voltage rating not exceeding 120 voltsnominal. A switch or protective device shall be connected in the ungrounded supplyconductor circuit.11.11.104DV.8 A mercury switch shall be enclosed. Wire lead
37、s shall be as short aspossible and terminate at eyelets or the equivalent, or in soldered connections at terminalplates on the supporting box or shall be fastened so that no strain is placed on themechanism.11.11.104DV.9 An INDEPENDENTLY MOUNTED CONTROL with manual reset shall be resettable fromthe
38、exterior of the enclosure.DECEMBER 22, 2016NATIONAL DIFFERENCES FOR UL 60730-2-66UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL11.11.104DV.10 Connections for piping shall be threaded in accordance with the Standardfor General Purpose (Inch)
39、Pipe Threads, ANSI/ASME B1.20.1-1983.11.11.105DV DE Modification of 11.11.105 of the part 2 by adding the following:External fluid leakage shall be limited to the levels specified in 18.101.11.11.106DV DE Modification of 11.11.106 of the part 2:Replace, .pressure, following the endurance test, and t
40、he control conforms to one of thefollowing: with . pressure, following the endurance test. If leakage occurs, the controlshall conform to one of the following:15.4DV D2 Modification of 15.4 of the part 2 by adding:For Type 2 pressure SENSING CONTROLS, see Table AA.101DV in Annex AA.17.2.3.1DV D2 Mod
41、ification to 17.2.3.1 of the UL part 1 by adding the following:208 V for controls rated at any voltage between 200 to 208 volts.17.16.102DV DE Modification of 17.16.102 of the part 2:17.16.102DV.1 For 17.7 and 17.8, revise by the manufacturer in 7.2. to by themanufacturer in accordance with Table 7.
42、2.17.16.102DV.2 For 17.9, delete as specified in 17.16.102.17.16.102DV.3 For the first paragraph beginning 17.10 to 17.13, replace limit controlswith limiters.17.16.102DV.4 For the second paragraph beginning 17.10 to 17.13 replace limit controlwith limiter.17.16.103DV DE Modification of 17.16.103 of
43、 the part 2:For 17.7 and 17.8, replace 7.2 with accordance with Table 7.2.18.101DV.1 DE Modification of 18.101 of the part 2:Delete under consideration.Table AA.1DV D2 Replacement of AA.1 of the part 2:DECEMBER 22, 2016 NATIONAL DIFFERENCES FOR UL 60730-2-6 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FO
44、R FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable AA.1DV Number of cycles for INDEPENDENTLY MOUNTED CONTROLSType AUTOMATIC ACTION MANUAL ACTIONwith load no load with load no loadSelf-resetting cut-out 100 000 Non-self-resetting cut-out 1 000a)5 000 1 000a)5 000Self-resetting limi
45、terc)6 000b)Non-self-resetting limiter 6 000 6 000 Pressure operatingc)6 000 Manual 6 000 In the U.S.A., the number of cycles specified apply for independently mounted, integrated and incorporatedpressure controls.a)Break only.b)100 000 for gas appliances and furnace applications.c)30 000 cycles for
46、 refrigeration applications.Table AA.101DV D2 Addition to the part 2:Table AA.101DV Deviation and DRIFT tolerances for Type 2 pressure SENSING CONTROLSMaximum operating pressure(absolute values)Maximum variations in operating pressure, percentDeviation DRIFTMaximum SET POINT of 25 Pa (0,1inch) water
47、 column+100 20-50Maximum SET POINT greater than 25Pa (0,1 inch) of water and less than2,5 kPa (10 inch) water column20 20Maximum SET POINT greater than 2,5kPa (10 inch) of water and less than6,9 kPa (1 psi) water column10 10Maximum SET POINT greater than 6,9kPa (1 psi)1)5 51)Applies to all Type 2 re
48、frigeration pressure controls. Minimum downward DRIFT tolerance is not specified for Type 2refrigeration pressure controls. Minimum downward DRIFT tolerance shall be as declared.DVE D2 Add the following item d) to DVE.1 of the Part 1:d) Leakage tests of parts and assemblies subject to fluid pressure.DECEMBER 22, 2016NATIONAL DIFFERENCES FOR UL 60730-2-68
