BS EN 61812-1:2011
$198.66
Time relays for industrial and residential use – Requirements and tests
| Published By | Publication Date | Number of Pages |
| BSI | 2011 | 52 |
IEC 61812-1:2011 applies to time relays for industrial applications (e.g. control, automation, signal and industrial equipment). It also applies to time relays for automatic electrical controls for use in, on, or in association with equipment for residential and similar use. This edition includes the following significant technical changes with respect to the previous edition: – addition of terms and definitions more commonly used by industry; – addition of timing charts to help explain terms and definitions involving a sequence of events; – addition of provisions for residential use.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 9 | English CONTENTS |
| 12 | 1 Scope 2 Normative references |
| 14 | 3 Terms and definitions 3.1 Terms and definitions related to general terms |
| 16 | 3.2 Terms and definitions of relay types Figures Figure 1 – Definition of ports Figure 2 – Definition of symbols |
| 17 | Figure 3 – Power on-delay relay Figure 4 – Power off-delay relay Figure 5 – Off-delay relay with control signal |
| 18 | Figure 6 – On- and off-delay relay with control signal Figure 7 – Flasher relay |
| 19 | Figure 8 – Star-delta relay Figure 9 – Summation time relay |
| 20 | Figure 10 – Pulse delayed relay Figure 11 – Pulse delayed relay with control signal Figure 12 – Interval relay |
| 21 | Figure 13 – Interval relay with control signal Figure 14 – Retriggerable interval relay with control signal on |
| 22 | 4 Influence quantities Figure 15 – Retriggerable interval relay with control signal off Figure 16 – Maintained time relay Tables Table 1 – Influence quantities and reference values |
| 23 | 5 Rated values 5.1 General 5.2 Input voltage and frequency |
| 24 | 5.3 Release voltage 5.4 Power consumption 5.5 Output circuit |
| 25 | 5.6 Ambient temperature 5.7 Transport and storage temperature 5.8 Humidity Table 2 – Preferred values of endurance Table 3 – Preferred values of maximum permissible operating frequency |
| 26 | 5.9 Pollution degree 5.10 Altitude 5.11 Timing circuit function Table 4 – Recommended final values of the setting range |
| 27 | 6 Provisions for testing 7 Documentation and marking 7.1 Data Table 5 – Type testing |
| 28 | Table 6 – Required relay information |
| 29 | 7.2 Marking |
| 30 | 8 Heating 8.1 General 8.2 Test conditions 8.3 Heating of terminals |
| 31 | Table 7 – Areas and lengths of conductorsdependent on the current carried by the terminal |
| 32 | 8.4 Heating of accessible parts 8.5 Heating of insulating materials 9 Basic operating function 9.1 General 9.2 Operate Table 8 – Temperature rise limits of accessible parts |
| 33 | 9.3 Release 9.4 Time function 10 Insulation 10.1 General Table 9 – Changing of influencing quantities |
| 34 | 10.2 Preconditioning 10.3 Dielectric strength |
| 35 | Table 10 – Impulse test for basic insulation Table 11 – Dielectric test voltage for devices suitable for use in single-phase threeor two-wire a.c. and d.c. systems |
| 36 | 10.4 Protection against direct contact 11 Electrical endurance 11.1 General Table 12 – Dielectric test voltage for devices suitablefor use in three-phase four or three-wire a.c. systems |
| 37 | 11.2 Resistive loads, inductive loads, and special loads 11.3 Low energy loads 12 Conditional short-circuit current 12.1 General 12.2 Test procedure 12.3 Test circuit electromechanical output circuit |
| 38 | 12.4 Test circuit solid state output circuit Figure 17 – Test circuit electromechanical output, conditional short-circuit current |
| 39 | 12.5 Condition of switching element after test 13 Clearances and creepage distances 13.1 General Figure 18 – Test circuit solid state output, conditional short-circuit current |
| 40 | 13.2 Creepage distances |
| 41 | 13.3 Clearances Table 13 – Minimum creepage distances for basic insulation |
| 42 | 13.4 Measurement of creepage distances and clearances 14 Mechanical strength 14.1 General Table 14 – Minimum clearances for basic insulation Table 15 – Minimum clearances in controlled overvoltage conditions for internal circuits |
| 43 | 14.2 Mechanical strength of terminals and current-carrying parts 15 Heat and fire resistance |
| 44 | 16 Vibration and shock 16.1 Vibration 16.2 Shock |
| 45 | 17 Electromagnetic compatibility (EMC) 17.1 General 17.2 EMC immunity Table 16 – Environmental conditions influencing EMC |
| 46 | Table 17 – Immunity tests for industrial environments |
| 47 | 17.3 EMC radiated and conducted emission Table 18 – Immunity tests for residential, commercial and light-industrial environments |
| 49 | Annex A (informative) Ball pressure test |
| 50 | Bibliography |
