UL 60947-7-3
Low-Voltage Switchgear and Controlgear - Part 7-3: Ancillary Equipment - Safety Requirements for Fuse Terminal Blocks

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2017-01-27DOD Approved: --
Price Code:GANSI Approved: 2017-01-27
Type:ulanceiec

  • SCOPE

    1.1 Scope

    This part of IEC 60947 applies to fuse terminal blocks with screw-type or screwless-type clamping units for the connection of rigid (solid or stranded) or flexible copper conductors for the reception of cartridge fuse-links in accordance with IEC 60127-2, intended primarily for industrial or similar use in circuits not exceeding 1 000 V a.c., up to 1 000 Hz or 1 500 V d.c., and having a maximum short-circuit breaking capacity of 1 500 A.

    They are intended for installation in electrical equipment with enclosures which surround the fuse terminal blocks to such an extent that they are accessible only with the aid of a tool.

    For certain applications, for example in control circuits, the fuse terminal blocks may be designed exclusively for short-circuit protection.

    NOTE This standard may be used as a guide for fuse terminal blocks for the reception of special cartridge fuse- links which do not meet the requirements of IEC 60127-2.

    The object of this standard is to specify safety requirements and test methods for the mechanical, electrical and thermal characteristics of fuse terminal’ blocks, to ensure the compatibility between terminal blocks and standardized fuse-links.

    This standard may be used as a guide for

    – fuse terminal blocks requiring the fixing of special devices to the conductors, for example quick connect terminations or wrapped connections, etc.;

    – fuse terminal blocks providing direct contact to the conductors by means of edges or points penetrating the insulation, for example insulation displacement connections, etc.

    Where applicable in this standard, the term “clamping unit” has been used instead of the term “terminal”. This is taken into account in case of reference to IEC 60947-1.

    1.1DV Modification by adding the following:

    This standard specifies requirements for fuse terminal blocks with screw-type or screwless-type clamping units for the connection of rigid (solid or stranded) or flexible copper conductors for the reception of cartridge fuse-links, in accordance with Annex DVB, National Electrical Code, NFPA 70 (for use in the USA), CSA C22.1–15 Canadian Electrical Code, Part I (for use in Canada), and NOM-001-SEDE, Electrical Installations (Utility) [for use in Mexico].

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
    • Deviations
    • IEC Foreword
    • Introduction
      • LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR – Part 7-3: Ancillary equipment – Safety requirements for fuse terminal blocks
        • 1 General
          • 1.1 Scope
          • 1.2 Normative references
        • 2 Definitions
        • 3 Classification
        • 4 Characteristics
          • 4.1 Fuse-links
          • 4.2 Rated power dissipation value
          • 4.3 Rated and limiting values
        • 5 Product information
          • 5.1 Marking
          • 5.2 Additional information
          • 5.3 Marking on the packing unit
        • 6 Normal service, mounting and transport conditions
          • 6.1.1 Ambient temperature
        • 7 Constructional and performance requirements
          • 7.1 Constructional requirements
          • 7.2 Performance requirements
          • 7.3 Electromagnetic compatibility (EMC)
        • 8 Tests
          • 8.1 Kinds of test
          • 8.2 General
          • 8.3 Verification of mechanical characteristics
          • 8.4 Verification of electrical characteristics
          • 8.5 Verification of thermal characteristics
          • 8.6 Verification of EMC characteristics
    • Annex A (normative) Gauges
    • Annex B (informative) Power dissipation values Pand P
    • Annex C (normative) Order of tests and number of specimens
    • Annex DVA (normative) IEC, Canadian, Mexican, and United States Standard References
    • Annex DVB (normative)
    • Bibliography