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1、FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Subject 347 October 19, 2007 SUMMARY OF TOPICS The following is being proposed for preliminary review and comment only: 1. For Preliminary Review Only: Proposed Fifth Edition of the Standard for High Voltage Industrial Control Equipment,
2、UL 347, as an American National Standard. COMMENTS DUE: November 2, 2007 This proposal is for review and comment only (no ballot at this time). Please note that comments on a preliminary review document will not receive a response from the proposal author through CSDS. Instead, the proposal author w
3、ill be asked to review the comments and adjust the proposals and/or supporting rationale as the author determines to be appropriate. The preliminary review process is an informal mechanism that provides authors with the opportunity to refi ne their proposals before they advance to the next stage in
4、ULs standards development process. In some cases, the author of the proposals may choose to discontinue them. In this case, the author need not do anything after preliminary review has ended. Normally, the next step in the process is the more formal STP ballot and stakeholder review process. Only co
5、mments posted during the STP ballot and stakeholder review process will be provided with a response in CSDS. 1. For Preliminary Review Only: Proposed Fifth Edition of the Standard for High Voltage Industrial Control Equipment, UL 347, as an American National Standard. RATIONALE Proposal submitted by
6、: Paul Barnhart, UL, on behalf of the CANENA Technical Harmonization Subcommittee THSC TC17 WG1 Medium Voltage Controllers, which includes representatives of UL, CSA, ANCE, and North American medium-voltage control manufacturers. This standard was prepared by comparing UL 347, existing CSA standards
7、, and ANCE and IEC 60470-2000 requirements. These requirements were reviewed, compared and, where possible, harmonized. Where harmonization was not possible due to local installation codes, the differing requirements are noted in the text of the document. When confl icts between existing North Ameri
8、can and IEC practices existed, the practice in North America was retained. This standard is formatted to facilitate comparison to IEC 60470 requirements, and to IEC 60694, which is the common clauses document to which IEC 60470 is subservient. Requirements are categorized and arranged in the clause
9、numbering structure currently used for IEC 60470. Where the requirements in this standard are equivalent to those in IEC 60470, the subclause is assigned the equivalent IEC subclause number. Where this standard does not include a subclause equivalent to those in IEC 60470, the entry Vacant is shown
10、for the IEC 60470 subclause number. Where this standard includes a requirement not shown in IEC 60470, the subclause is assigned a number of a higher numerical value than those used in the IEC document. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employ
11、ees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:38:43 MSTNo reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Please note that in order to simplify the cross-referencing of corresponding requirements, the f
12、ollowing clause numbering system is used: The clauses follow the IEC 60470 (and IEC 60694) format for clauses 1 through 7. Subclauses numbered .1 through .99 (but not subdivisions, e.g., 4.8.1, 4.8.2, 4.8.3, mldr ) correspond to subclauses in IEC 60470 (and IEC 60694). Subclauses numbered .101 throu
13、gh .199 correspond to subclauses in IEC 60470. Subclauses numbered .201 through .299 are CANENA requirements not found or numbered in IEC 60470. The purpose of this standard is to harmonize as far as practicable all rules and requirements of a general nature in order to obtain uniformity of requirem
14、ents and tests throughout the corresponding range of equipment and to avoid the need for testing to different standards. OCTOBER 19, 2007SUBJECT 347-2- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/
15、22/2007 20:38:43 MSTNo reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION CONTENTS 1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16、. . . . . . . . . . . . . .8 1.1 Scope and object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 1.2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、. . . . . . . . . .8 2 Normal and Special Service Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 2.1 Normal service conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、.9 2.2 Special service conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 2.2.1 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 2.2.2 Sol
19、ar radiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 2.2.3 Evaluations and exceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 3 Defi nitions . . . . . . . . . . . . . .
20、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 3.1 General terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 3.2 Assemblies of controlge
21、ar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 3.3 Parts of assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 3.4 Switching devices . . . . . . . . . .
22、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 3.5 Parts of a controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 3.6 Operation . . . . . . . . . . . . . . . . .
23、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.7 Characteristic quantities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 3.101 Fuses . . . . . . . . . . . . . . . . . . . .
24、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 3.202 Index of defi nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 4 Controller and Control Center Ratings and Charact
25、eristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 4.1 Rated voltage (Ur) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 4.1.201 Rated supply voltage (Ua) . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . . . . . .24 4.2 Rated insulation level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 4.2.101 Rated rotor insulation level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、. . . . . . . . . .24 4.2.102 Rated starting voltage of an autotransformer controller (Utap) . . . . . . . . . . . . . . .24 4.2.103 Rated starting voltage of a reactor starter (Utap). . . . . . . . . . . . . . . . . . . . . . . . .24 4.3 Rated frequency (fr) . . . . . . . . . . . . . . . . . . . .
28、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 4.4 Rated continuous current and temperature rise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 4.4.1 Rated normal current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 . . . . . . . . . . . . . . . .25 4.4.2 Temperature rise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 4.4.101 Rated continuous current (thermal current rating) (Ith) . . . . . . . . . . . . . . . . . . . . .25 4.4.201 Control center
30、 rated continuous current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 4.5 Rated short-time withstand current (Ik) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 4.6 Rated peak and momentary withstand current . . . . . . . . . . . . . .
31、 . . . . . . . . . . . . . . . . . . . . . .26 4.6.1 Rated peak withstand current (Ip) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 4.6.2 Rated momentary withstand current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 4.7 Rated
32、 duration of short-circuit (tk) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 4.7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 4.7.2 Rated duration of shor
33、t-circuit for extendable power bus . . . . . . . . . . . . . . . . . . . . .27 4.7.3 Rated duration of short-circuit for non-extendable power bus . . . . . . . . . . . . . . . . .27 4.8 Rated supply voltage of operating devices and of auxiliary and control circuits (Ua) . . .27 4.8.1 General. . . .
34、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 4.8.2 Rated supply voltage (Ua) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 4.8.3 Tolerances . . . . . . . . . . . . . . . . .
35、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 4.9 Rated supply frequency of closing and opening devices and of control circuits. . . . . . .28 4.10 Rated pressure of compressed gas supply for installation and/or operation . . . . . . . . . .28 4.101 Rated
36、 operational current or rated operational power (Ie) . . . . . . . . . . . . . . . . . . . . . . . . .28 4.102 Rated duties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 4.103 Rated making and breaking capacities . .
37、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 4.104 Utilization category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 4.105 Mechanical endurance (standard and optional) . . . . . . . . . . . .
38、 . . . . . . . . . . . . . . . . . . . . .28 OCTOBER 19, 2007SUBJECT 347-3- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=leee, leee Not for Resale, 11/22/2007 20:38:43 MSTNo reproduction or networking permitted without license
39、from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION 4.106 Electrical endurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 4.107 Coordination with medium-voltage fuses . . . . . . . . . . . . . . . . . .
40、 . . . . . . . . . . . . . . . . . . . . .29 4.108 Types and characteristics of automatic change-over devices and automatic acceleration control devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 4.109 Types and chara
41、cteristics of autotransformers or reactors . . . . . . . . . . . . . . . . . . . . . . . .29 4.110 Types and characteristics of the starting resistors for rheostatic motor starters . . . . . .30 4.111 Characteristics dependent on starter type . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42、 . . . . . . . . .30 4.201 Characteristics of Class E2 controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 4.202 Fault interrupting rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 4.203 C
43、ontrol center short-circuit rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 4.204 Starting duty of reduced voltage starters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 5 Design and Construction . . . . . . . . . .
44、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 5.1 Requirements for liquids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 5.2 Requirements for gases . . . . . . . . . . . .
45、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 5.3 Provisions for protective grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 5.3.201 Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
46、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 5.3.202 Grounding of exposed metal parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 5.3.203 Ground bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47、. . . . . . . . . .32 5.3.204 Provision for ground termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 5.3.205 Grounding of drawout elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 5.3.206 Grounding of instrument and
48、 control circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 5.3.207 Wire, cable, bus connector, and grounding kits . . . . . . . . . . . . . . . . . . . . . . . . . . .34 5.4 Auxiliary and control equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
49、 . . . . . . . . . . .34 5.5 Dependent power operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 5.6 Stored energy operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 5.7 Independent manual operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 5.8 O