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BS EN IEC 60282-1:2020

BS EN IEC 60282-1:2020

$215.11

High-voltage fuses – Current-limiting fuses

Published By Publication Date Number of Pages
BSI 2020 86
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This part of IEC 60282 applies to all types of high-voltage current-limiting fuses designed for use outdoors or indoors on alternating current systems of 50 Hz and 60 Hz and of rated voltages exceeding 1 000 V.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
11 FOREWORD
13 1 Scope
2 Normative references
3 Terms and definitions
3.1 Electrical characteristics
17 3.2 Fuses and their component parts
18 Figures
Figure 1 ā€“ Terminology
19 3.3 Additional terms
21 4 Normal and special service conditions
4.1 Normal service conditions
22 4.2 Special service conditions
4.2.1 General
4.2.2 Altitude
Tables
Table 1 ā€“ Altitude correction factors ā€“ Dielectric withstand
Table 2 ā€“ Altitude correction factors ā€“ Current-carrying capability
23 4.3 Environmental behaviour
5 Ratings and characteristics
5.1 General
5.2 Ratings and characteristics that are applicable to all fuses
5.2.1 Rated voltage (Ur)
24 5.2.2 Rated current of a fuse-base
5.2.3 Rated current of a fuse-link (Ir)
5.2.4 Rated insulation level (of a fuse-base)
Table 3 ā€“ Rated voltages
25 Table 4 ā€“ Fuse-base rated insulation levels ā€“ Series I
Table 5 ā€“ Fuse-base rated insulation levels ā€“ Series II
26 5.2.5 Rated breaking capacity
5.2.6 Rated frequency
5.2.7 Temperature limits
27 5.2.8 Limits of switching voltage
Table 6 ā€“ Limits of temperature and temperature rise for components and materials
28 Table 7 ā€“ Maximum permissible switching voltages
Table 8 ā€“ Maximum permissible switching voltages for certain fuse-links of small current ratings
29 5.2.9 Time-current characteristics
Figure 2 ā€“ Permissible switching voltages for fuse-links of small current ratings (Table 8)
30 5.2.10 Cut-off characteristic
5.2.11 I2t characteristics
5.2.12 Power dissipation
5.3 Ratings and characteristics of particular fuse-link types and applications
5.3.1 Fuse-links for transformer applications
31 5.3.2 Fuse-links for motor circuit applications
5.3.3 Fuse-links for capacitor protection
5.3.4 Fuses fitted with indicating devices
32 Figure 3 ā€“ Various stages of the striker travel
Table 9 ā€“ Striker mechanical characteristics
33 5.3.5 Back-Up fuses intended for use in a switch-fuse combination according to IEC 62271ļæ½105
5.3.6 Allowable continuous current of a fuse-link (Ia)
5.3.7 Maximum enclosure current (Ifep)
34 6 Design, construction and performance
6.1 General requirements with respect to fuse operation
6.1.1 General
6.1.2 Standard conditions of use
35 6.1.3 Standard conditions of behaviour
6.2 Identifying markings
36 6.3 Dimensions
7 Type tests performed on all fuses
7.1 Conditions for making the tests
37 7.2 List of type tests
7.3 Common test practices for all type tests
7.3.1 General
7.3.2 Mounting of fuse-link
7.3.3 Condition of device to be tested
7.3.4 Mounting of fuses
7.4 Dielectric tests
7.4.1 Test practices
38 7.4.2 Application of test voltage for impulse and power-frequency test
7.4.3 Atmospheric conditions during test
7.4.4 Lightning impulse voltage dry tests
39 7.4.5 Power-frequency voltage dry tests
7.4.6 Power-frequency wet tests
7.5 Temperature-rise tests and power-dissipation measurement
7.5.1 Test practices
40 7.5.2 Measurement of temperature
Table 10 ā€“ Electrical connection to the test circuit ā€“ Conductor sizes
41 7.5.3 Measurement of power dissipation
7.6 Breaking tests
7.6.1 Test practices
44 Table 11 ā€“ Breaking tests ā€“ Parameters
46 Figure 4 ā€“ Representation of a specified TRV by a two-parameter reference line and a delay line
47 Figure 5 ā€“ Example of a two-parameter reference line for a TRV complying with the conditions of the type test
48 Table 12 ā€“ Standard values of rated TRV for I1 ā€“ Series I rated voltages
Table 13 ā€“ Standard values of rated TRV for I1 ā€“ Series II rated voltages
49 Table 14 ā€“ TRV for Test Duty 2 ā€“ Series I rated voltages
50 Table 15 ā€“ TRV for Test Duty 2 ā€“ Series II rated voltages
51 7.6.2 Test procedure
Figure 6 ā€“ Breaking tests ā€“ Arrangement of the equipment
Figure 7 ā€“ Breaking tests ā€“ Typical circuit diagram for Test Duties 1 and 2
52 Figure 8 ā€“ Breaking tests ā€“ Typical circuit diagram for Test Duty 3
53 7.6.3 Alternative test methods for Test Duty 3
54 Figure 9 ā€“ Breaking tests ā€“ Interpretation of oscillograms for Test Duty 1
55 Figure 10 ā€“ Breaking tests ā€“ Interpretation of oscillograms for Test Duty 2(calibration traces as in a) of Figure 9)
Figure 11 ā€“ Breaking tests ā€“ Interpretation of oscillograms for Test Duty 3
56 7.6.4 Breaking tests for fuse-links of a homogeneous series
57 Table 16 ā€“ Breaking test requirements for fuse-links of a homogeneous series
58 7.6.5 Acceptance of a homogeneous series of Back-Up fuse-links by interpolation
7.6.6 Acceptance of a homogeneous series of fuse-links of different lengths
59 7.7 Tests for time-current characteristics
7.7.1 Test practices
7.7.2 Test procedures
7.8 Electromagnetic compatibility (EMC)
60 8 Type tests for particular fuse-link types and applications
8.1 General
8.2 List of type tests
8.3 Tests required for a particular type of fuse or application
8.3.1 Indicator tests (for fuses fitted with indicators)
61 8.3.2 Striker tests (for fuses fitted with strikers)
63 8.3.3 Tests for Back-Up fuses for use in switch-fuse combination of IEC 62271ļæ½105
64 8.3.4 Liquid-tightness tests
66 Figure 12 ā€“ Test sequence for switchgear type applications
67 Figure 13 ā€“ Test sequence for transformer type applications
68 Figure 14 ā€“ Test sequence for series a) test for transformer type applications
69 8.4 Tests performed at the request of a user
8.4.1 Thermal shock tests for outdoor fuses
Figure 15 ā€“ Test sequence for series b) test for transformer type applications
70 8.4.2 Waterproof test (ingress of moisture) for outdoor fuses
9 Routine tests
71 Annexes
Annex A (normative) Method of drawing the envelope of the prospective and transient recovery voltage of a circuit and determining the representative parameters
A.1 Introduction
A.2 Drawing the envelope
A.3 Determination of parameters
72 Figure A.1 ā€“ Example of a two-parameter reference line for a TRVwhose initial portion is concave towards the left
Figure A.2 ā€“ Example of a two-parameter reference line for an exponential TRV
73 Annex B (informative) Reasons which led to the choice of TRV values for Test Duties 1, 2 and 3
75 Annex C (informative) Preferred arrangements for temperature-rise tests of liquid-tight fuse-links
Figure C.1 ā€“ Test tank for temperature-rise tests of liquid-tight fuses
Figure C.2 ā€“ Details of clamping arrangement for fuse-link in the tank
76 Annex D (informative) Types and dimensions of current-limiting fuse-links specified in existing national standards
79 Annex E (normative) Requirements for certain types of fuse-links intended for use at surrounding temperatures above 40 Ā°C
E.1 Types of fuse-link covered by this annex
E.1.1 General
E.1.2 Covered fuse-link types
E.1.3 Exempted fuse-links
E.1.4 Introduction
80 E.2 Definitions
E.3 Preferred MAT ratings
E.4 Specific service conditions
E.5 Additional breaking test requirements
E.5.1 Test practices
81 E.5.2 Test procedure
E.5.3 Full-Range fuse Test Duty 3 tests
82 E.6 Full-Range fuse: determination of I3 current
83 Annex F (informative) Criteria for determining It testing validity
F.1 Introduction
F.2 Breaking processes
84 Bibliography

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BS EN IEC 60282-1:2020
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