UL-SUBJECT-508E-1997.pdf
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1、August 6,1997 I SUBJECT 508E OUTLINE OF INVESTIGATION FOR IEC TYPE “2“ COORDINATION SHORT CIRCUIT TESTS OF ELECTROMECHANICAL MOTOR CONTROLLERS IN ACCORDANCE WITH IEC PUBLICATION 947-4-1 Issue Number: 2 AUGUST 6, 1997 COPYRIGHT 1994, 1997 UNDERWRITERS LABORATORIES INC. Copyright Underwriters Laborato
2、ries Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/21/2006 22:47:41 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 IEC TYPE “2“ COORDINATION SHORT CIRCUIT TESTS - SUBJECT 508E AUGUST 6,1997 No Text on Thi
3、s Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/21/2006 22:47:41 MDTNo reproduction or networking permitted without license from IHS -,-,- AUGUST 6. 1997 IEC TYPE “2“ COORDINATION SHORT CIRCUI
4、T TESTS . SUBJECT 508E 3 CONTENTS FOREWORD INTRODUCTION 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Normative References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5、 . 5 3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CONSTRUCTION 5 General . . . . . . . .
6、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 PERFORMANCE 6 Enclosure Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 Conductors. Conduit. and Terminal Torque . . . . . . . . . . . . . . . . . . . . . . . . . . .
7、 . . . . . 8 8 Selection of Heater Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 9 Calibration of Test Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 10 Power Factor Requirements . . . . . . . . . .
8、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 11 Ground Fuse (Link) Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 12 Recovery Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
9、 13 Short Circuit Test at “r“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 14 Short Circuit Test at “lql . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 16 Dielectric Voltage-Withstand Tests . . . . . . . .
10、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 17 Overload Relay Calibration Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 18 Discrimination Between Overload Relay and Short Circuit Protective Device (Optional) . . . . . . . . . . . . . . . . . .
11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 15 Type “2“ Coordination Criteria for Evaluation of the Test Results “r“ and “lql . . . . . . 11 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 N
12、ot for Resale, 10/21/2006 22:47:41 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*UL SUBJECT 508E-ENGL 1777 M 9275775 0701702 502 m 4 IEC TYPE “2“ COORDINATION SHORT CIRCUIT TESTS - SUBJECT 508E AUGUST 6,1997 FOREWORD A. This Outline of Investigation contains basic req
13、uirements for products covered by Underwriters Laboratories Inc. (UL) under its Follow-Up Service for this category within the limitations given below and in the Scope section of this Outline of Investigation. They are subject to revision as further experience and investigation may show is necessary
14、 or desirable. B. The observance of these requirements by a manufacturer is one of the conditions of the continued coverage of the manufacturers product. C. A product which complies with the text of this Outline of Investigation will not necessarily be judged to comply with the Outline of Investigat
15、ion if, when examined and tested, it is found to have other features which impair the level of safety contemplated by these requirements. D. A product employing materials or having forms of construction differing from those detailed in the requirements of this Outline of Investigation may be examine
16、d and tested according to the intent of the requirements and, if found to be substantially equivalent, may be judged to comply with the Outline of Investigation. E. UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the
17、manufacturer or any other party. The opinions and findings of UL represent its professional judgment given with due consideration to the necessary limitations of practical operation and state of the art at the time the Outline of Investigation is processed. UL shall not be responsible to anyone for
18、the use of or reliance upon this Outline of Investigation by anyone. UL shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Outline of Investigation. F. Many tests required by
19、 the Outline of Investigations of UL are inherently hazardous and adequate safeguards for personnel and property shall be employed in conducting such tests. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resal
20、e, 10/21/2006 22:47:41 MDTNo reproduction or networking permitted without license from IHS -,-,- AUGUST 6,1997 IEC TYPE “2“ COORDINATION SHORT CIRCUIT TESTS - SUBJECT 508E 5 INTRODUCTION 1 Scope 1.1 The requirements in this Outline of Investigation are for verification of short-circuit tests to be c
21、onducted on Type “2“ coordinated electromechanical motor controllers as defined by and in accordance with the Standard for Low Voltage Switchgear and Controlgear, Part 4: Contactors and Motor-Starters, International Electrotechnical Commission (IEC) Publication 947-4-1. 1.2 These requirements cover
22、electromechanical motor controllers, such as manually or magnetically operated contactors with or without thermal or solid state overload relays, combination motor controllers with discrete components, and starters that are provided with short circuit protective devices, that have been investigated
23、for compliance with the requirements in the Standard for Industrial Control Equipment, UL 508, and where the main contact voltage rating does not exceed 1000 V ac or 1500 V dc. 1.3 The requirements in this Outline of Investigation are applicable only to those specific motor controllers and short cir
24、cuit protective devices (SCPD) which have been coordinated together by the manufacturer. 2 Normative References 2.1 These requirements are based upon the Standard for Low Voltage Switchgear and Controlgear, Part 4: Contactors and Motor-Starters, IEC Publication 947-4-1. 2.2 Prior to conducting the v
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