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BS EN 62246-1:2011

BS EN 62246-1:2011

$215.11

Reed switches – Generic specification

Published By Publication Date Number of Pages
BSI 2011 82
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This part of IEC 62246 series, which is a generic specification applies to all types of reed switches including magnetically biased reed switches of assessed quality for use in general and industrial applications.

NOTE 1 Mercury wetted reed switches are not covered by this standard due to their possible environmental impact.

It lists the tests and measurement procedures which may be selected for use in detail specifications for such reed switches. This standard also specifies the quality assessment procedures to be followed.

This standard applies to reed switches which are operated by an applied magnetic field; it is not restricted to any particular type of contact load.

NOTE 2 For elementary relays with reed switches, this standard is recommended to be used together with the standards IEC 61810-1 and IEC 61811-1 as applicable.

NOTE 3 The applications of reed switches can be covered by specific product standards and the use of the IEC 62246 series does not guarantee compliance with those standards.

NOTE 4 Where any discrepancies occur for any reasons, documents rank in the following order of authority:

  1. the detail specification,

  2. the sectional specification,

  3. the generic specification,

  4. any other international documents (for example, of the IEC) to which reference is made.

The same order of precedence applies to equivalent national documents.

PDF Catalog

PDF Pages PDF Title
8 English

CONTENTS
13 1 Scope
2 Normative references
14 3 Terms and definitions
3.1 Terms and definitions of reed switch types
15 3.2 Terms and definitions of operating values
16 Figures

Figure 1 – Functional characteristics
17 3.3 Terms and definitions related to operating times (see Figure 2)
18 Figure 2 – Time definitions
20 3.4 Terms and definitions related to contacts
22 4 Rated values
4.1 General
23 4.2 Frequency of operation
4.3 Duty factor
4.4 Open-circuit voltage across contacts
4.5 Current rating
4.6 Load ratings
4.7 Number of operations
4.8 Climatic category
24 4.9 Environmental severities
4.10 Surge voltage
25 4.11 Classification
4.12 Contact reliability
5 Marking
Tables

Table 1 – Classification
26 6 Quality assessment procedures
6.1 General
6.2 Supplier’s declaration of conformity
6.3 Second-party conformity assessment
6.4 Third-party certification
6.5 IECEE scheme
6.6 IECQ system
28 7 Test and measurement procedures
7.1 General
7.2 Alternative procedures
29 7.3 Standard conditions for testing
7.4 Visual inspection and check of dimensions
30 7.5 Functional tests
31 7.6 Remanence test (see Figure 3)
32 7.7 Contact circuit resistance
Figure 3 – Remanence test sequence
33 Figure 4 – Sequence of contact circuit resistance measurement
34 7.8 Dielectric test
7.9 Insulation resistance
35 7.10 Operating times (see Figures 2, 5 and 6)
37 Figure 5 – Test circuit for the measurement of release and bounce timeof a make switch
38 7.11 Contact sticking
Figure 6 – Test circuit for the measurement of time parametersof a change-over switch
41 7.12 Robustness of terminals
7.13 Soldering (solderability and resistance to soldering heat)
42 7.14 Climatic sequence
43 7.15 Damp heat, steady state
7.16 Rapid change of temperature
7.17 Salt mist
44 7.18 Vibration
45 7.19 Shock
46 7.20 Acceleration test – Functional test only
7.21 Sealing
47 7.22 Electrical endurance
50 Table 2 – Resistive loads
51 Table 3 – Loads
Table 4 – Cables
52 Table 5 – Making and breaking capacity for electrical endurance tests
54 7.23 Mechanical endurance
55 7.24 Maximum cycling frequency
56 7.25 Surge withstand test
57 7.26 Making and breaking capacities
59 Table 6 – Verification of making and breaking capacity under normal conditions
60 7.27 Conditional short-circuit current test
Table 7 – Verification of making and breaking capacity under abnormal conditions
61 7.28 Contact reliability test
63 7.29 Temperature rise
64 7.30 Making current capacity test
65 7.31 Breaking current capacity test
67 Annex A (normative)
Standard test coils for reed switches
Figure A.1 – Configuration of test coils
68 Table A.1 – List of standard test coils
69 Annex B (normative)
Test systems
Figure B.1 – Test system 1
Figure B.2 – Test system 2
71 Annex C (informative)
Electrical endurance test circuit
Figure C.1 – Generalized endurance test circuit
72 Figure C.2 – Functional block diagram
73 Annex D (informative)
Inrush current loads
Figure D.1 – Circuit for filament lamp load
74 Figure D.2 – Example for capacitive load test
75 Annex E (informative)
Conditional short-circuit current test circuit
Figure E.1 – Conditional short-circuit current test circuit
76 Annex F (informative)
Electrical ratings based on classification
Table F.1 – Examples of contact rating designation based on classification
77 Annex G (informative)
Example of test arrangement for contact reliability test
Figure G.1 – Contact reliability test circuit
78 Annex H (informative)
Example of test arrangement for making current capacity test
Figure H.1 – Making current capacity test circuit
Figure H.2 – Making current capacity test sequence
79 Annex I (informative)
Example of test arrangement for breaking current capacity test
Figure I.1 – Breaking current capacity test circuit
Figure I.2 – Breaking current capacity test sequence
80 Bibliography

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BS EN 62246-1:2011
$215.11