BS EN 60691:1996:2003 Edition
$102.76
Thermal links. Requirements and application guide
| Published By | Publication Date | Number of Pages |
| BSI | 2003 | 22 |
For incorporation in electrical appliances and electronic equipment normally for use indoors. Not applicable for extreme conditions e.g. corrosive or explosive atmospheres.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Contents |
| 6 | Foreword Foreword to amendment A2 Contents |
| 7 | Introduction 1 Scope and object 1.1 This International Standard is applicable to thermal-links, intended for incorporation in ele… 1.2 This standard may be applicable to thermal-links for use under other than indoor conditions, … 1.3 This standard may be applicable to thermal-links in their simplest forms (e.g. melting strips… 1.4 This standard is applicable to thermal-links with a rated voltage not exceeding 690 V a.c. or… 1.5 This standard is not applicable to thermal-links used under extreme conditions such as corros… 1.6 This standard is not applicable to thermal-links to be used in circuits on a.c. with a freque… 1.7 The object of this standard is: 2 Normative references |
| 8 | 3 Definitions thermal-link (TL) rated functioning temperature ( holding temperature ( maximum temperature limit ( rated current ( interrupting current ( transient overload current ( rated voltage ( creepage distance |
| 9 | clearance heat capacity type test (of a product) homogeneous series (of thermal-links) portable equipment 4 General requirements 4.1 Thermal-links shall have adequate electrical and mechanical strength, and be so constructed a… 4.2 Thermal-links shall perform safely and reliably, and be capable of protecting the equipment d… 4.3 When a thermal-link changes its state of conductivity, no arc or flame shall be maintained, n… 4.4 After it has functioned, the thermal-link shall not be damaged in such a way that its replace… 4.5 After it has operated, the thermal-link shall not be repairable. |
| 10 | 5 General notes on tests 5.1 Unless otherwise indicated, all tests described in this standard are type tests. 5.2 Unless otherwise specified, all tests shall be carried out under the following atmospheric co… 5.3 In every test report, the ambient temperature shall be stated. If the standard conditions for… 5.4 If the result of any test is influenced to an appreciable extent by the position and method o… 5.5 If a thermal-link has been specifically designed for use in a special type of equipment, the … 5.6 Measurements of voltages and currents are carried out with instruments which do not appreciab… 5.7 In case of testing a homogeneous series of thermal-links, all the tests shall be applied to t… 5.8 The total number of specimens required is 45. Out of a total of 45 specimens, 15 are kept as … 5.9 No failures are permitted in the tests carried out in accordance with Clauses 5.10 If, in any of the tests carried out in accordance with the other clauses, one failure is rep… 6 Classification 6.1 With regard to ambient conditions: 6.2 With regard to circuit conditions: |
| 11 | 6.3 With regard to resistance to tracking; Table 1 Testing schedule |
| 12 | 7 Marking 7.1 Each thermal-link shall be marked with: 7.2 Marking shall be indelible and legible. 7.3 The marking in accordance with 8 Documentation 9 Mechanical requirements 9.1 Current-carrying parts shall be so constructed that contact pressure is not transmitted throu… |
| 13 | 9.2 Current-carrying parts shall withstand the mechanical stresses occurring in normal use. If su… 9.3 Terminals shall withstand the mechanical forces likely to be encountered during normal use. W… Table 2 Strength of terminals 9.4 Terminals for soldered connections shall be provided with a means such as a hole for holding … 9.5 Wire terminals shall be subjected to the tensile and bending tests mentioned under Test U: Ro… 9.6 Tag terminals, capable of being bent with the fingers, shall be so bent through 45°, then thr… 10 Electrical requirements |
| 14 | 10.1 Creepage distances and clearances Table 3 Creepage distances and clearances (absolute minimum values) 10.2 Humidity test |
| 15 | 10.3 Dielectric strength Table 4 Test voltages for dielectric strength 10.4 Insulation resistance 10.5 Resistance to tracking |
| 16 | 10.6 Interrupting current 10.7 Transient overload current 11 Temperature tests 11.1 Holding temperature ( 11.2 Rated functioning temperature ( |
| 17 | 11.3 Maximum temperature limit ( 11.4 Ageing 12 Soldering test 13 Resistance to rusting |
| 18 | Annex A (normative) Application guide A.1 Instructions for mounting given by the manufacturer of the thermal-link shall be followed, especi… A.2 Thermal-links shall be chosen such that all prevailing electrical requirements with regard to ins… A.3 Thermal-links shall be chosen such that, in the mounted position, their electrical and thermal in… A.4 If thermal-links in the form of melting wires or strips are applied, barriers shall be provided s… A.5 Electrical connections shall function reliably over the range of temperatures to which they may b… A.6 Soldered connections, if any, shall not rely solely on the solder alloy for their mechanical rigi… A.7 The mechanical strength and rigidity of the hardware used for mounting the thermal-link shall be … A.8 The mounted thermal-link shall be adequately protected from harmful effects produced by possible … Annex B (normative) Alternate ageing for TL with T |
| 19 | Annex C (informative) Indelibility of marking Figure C.1 Apparatus for testing the indelibility of markings |
| 20 | Annex ZA (normative) (normative) Normative references to international publications with their corresponding European … |
