I.S. EN 62246-2:2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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REED CONTACT UNITS - PART 2: HEAVY-DUTY REED SWITCHES
Hardcopy , PDF
30-03-2011
English
01-01-2008
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
FOREWORD
1 General
1.1 Scope
1.2 Normative references
1.3 Terms, definitions, abbreviations and symbols
1.4 Preferred values
1.4.1 Frequency of operation
1.4.2 Duty cycle
1.4.3 Open-circuit voltage across contacts
1.4.4 Current ratings
1.4.5 Load ratings
1.4.6 Number of operations
1.4.7 Climatic category
1.4.8 Preferred environmental severities
1.4.9 Rated operational voltage; U[e]
1.4.10 Rated switching current; I[e]
1.4.11 Rated insulation voltage
1.4.12 Rated impulse voltage
1.4.13 Utilization categories
1.4.14 Contact reliability
1.4.15 Limiting continuous current; I[th]
1.5 Marking
1.6 Order of precedence
1.7 Precautions regarding mercury (for mercury wetted
contact units)
2 Quality assessment procedures
2.1 General
2.2 Self-certification
2.3 Two-party certification
2.4 Third-party certification
3 Test and measurement procedures
3.1 General
3.2 Alternative procedures
3.3 Standard conditions for testing
3.4 Visual inspection and check of dimensions
3.5 Functional tests
3.6 Remanence test
3.7 Contact circuit resistance
3.8 Dielectric test
3.9 Insulation resistance
3.10 Operate, release, transfer or bridging, and bounce
times
3.11 Contact sticking
3.12 Robustness of terminals
3.13 Soldering (solderability and resistance to soldering
heat)
3.14 Climatic sequence
3.15 Damp heat, steady state
3.16 Rapid change of temperature
3.17 Salt mist
3.18 Bump
3.19 Vibration
3.20 Shock
3.21 Acceleration test - Functional test only
3.22 Sealing
3.23 Electrical endurance
3.23.1 General
3.23.2 Types of electrical endurance test
3.23.3 Standard electrical endurance test
3.23.4 Application simulation endurance test
3.23.5 Requirements
3.23.6 Information to be stated in the detail
specification
3.24 Mechanical endurance
3.25 Maximum cycling frequency
3.26 Mounting position test (for mercury wetted contact
units)
3.27 Drain time test (for mercury wetted contact units)
3.28 Voltage surge test
3.29 Rated impulse voltage
3.29.1 Procedure
3.29.2 Requirements
3.29.3 Information to be stated in the detail
specification
3.30 Rated making and breaking capacities
3.30.1 General test arrangements
3.30.2 Procedure
3.30.3 Requirements
3.30.4 Information to be stated in the detail
specification
3.31 Rated conditional short-circuit current
3.31.1 General test arrangements
3.31.2 Procedure
3.31.3 Requirements
3.31.4 Information to be stated in the detail
specification
3.32 Contact reliability test
3.32.1 General test arrangements
3.32.2 Procedure
3.32.3 Requirements
3.32.4 Information to be stated in the detail
specification
3.33 Temperature rise
3.33.1 Procedure
3.33.2 Requirements
3.33.3 Information to be stated in the detail
specification
3.34 Making current capacity test
3.34.1 General
3.34.2 Procedure
3.34.3 Requirements
3.34.4 Information to be stated in the detail
specification
3.35 Breaking current capacity test
3.35.1 General
3.35.2 Procedure
3.35.3 Requirements
3.35.4 Information to be stated in the detail
specification
Annex A (informative) - Electrical endurance test
circuit
Annex B (informative) - Rated conditional short-circuit
current test circuit
Annex C (informative) - Electrical ratings based on
utilization categories
Annex D (informative) - Example of test arrangement
for contact reliability test
Annex E (informative) - Standard test coils for
heavy-duty reed switches
Annex F (informative) - Making current capacity
test sequence
Annex G (informative) - Breaking current capacity
test sequence
Bibliography
Annex ZA (normative) - Normative references to international
publication with their corresponding European
publications
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