IEC 61810-4:2020 pdf download

IEC 61810-4:2020 pdf download.Electromechanical elementary relays – Part 4: General and safety requirements for reed relays
1 Scope
This part of IEC 61810 applies to electromechanical elementary relays with reed switches (reed contacts) incorporated into general control circuits. It defines the basic functional and safety requirements in all areas of electrical engineering or electronics in accordance with the parts of IEC 61810 series and IEC 62246 series. This document defines technical deviations/additions to IEC 61810-1. It specifies type tests, routine tests, special tests and environmental tests to confirm the service conditions for applications. NOTE The terms reed switch(es) and reed contact(s) are both in use for the description of the contact set in reed relays.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-17:1994, Basic environmental testing procedures – Part 2-17: Tests – Test Q: Sealing IEC 60077-1:2017, Railway applications – Electric equipment for rolling stock – Part 1: General service conditions and general rules IEC 60077-2:2017, Railway applications – Electric equipment for rolling stock – Part 2: Electrotechnical components – General rules IEC 60571:2012, Railway applications – Electric equipment used on rolling stock IEC 61373:2010, Railway applications – Rolling stock equipment – Shock and vibration tests IEC 61810-1:2015, Electromechanical elementary relays – Part 1: General and safety requirements IEC 61810-1:2015/AMD1:2019 IEC 61810-2:2017, Electromechanical elementary relays – Part 2: Reliability IEC 61810-2-1:2017, Electromechanical elementary relays – Part 2-1: Reliability – Procedure for the verification of B 10 values IEC 61810-7:2006, Electromechanical elementary relays – Part 7: Test and measurement procedures
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61810-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http://www.electropedia.org/ ISO Online browsing platform: available at http://www.iso.org/obp 3.2 Terms and definitions of relay types 3.2 of IEC 61810-1:2015 is applicable with the following addition: 3.2.7 reed relay electromechanical control circuit devices with connecting terminals, consisting of reed switch sets (reed contact sets) and coil fitting with/without a housing which could be plastic or metal Note 1 to entry: See Figure A.1. 3.4 Terms and definitions of operating values 3.4 of IEC 61810-1:2015 is applicable with the following addition: 3.4.7 magnetic interference tendency of a relay to be influenced by the magnetic field from an adjacent energized relay or any other surrounding solenoid Note 1 to entry: This influence can result in depression or elevation of the operate and release voltage of the affected relay, possibly causing them to fall outside their specification. Note 2 to entry: Magnetic interference can be minimized by alternating the polarity of adjacent relay coils, by magnetic shielding, or by placing two relays at right angles to each other. 3.8 Terms and definitions related to high frequency characteristics 3.8.1 frequency range <of an equipment> set of frequencies over which an equipment can be adjusted to operate satisfactorily Note 1 to entry: The frequency range of a relay can be subdivided into switched subranges which may or may not be contiguous.[SOURCE: IEC 60050-702:1992, 702-09-68, modified – “an equipment“ has been replaced with “a relay” in the “Note 1 to entry”] 3.8.2 capacitance <between open contacts> ability to store an electric charge between contacts 3.8.3 capacitance <between coil and contacts> ability to store an electric charge between contact and coil Note 1 to entry: It can have adverse effects for use in high frequency signal transmission circuits of information and communication equipment. 3.8.4 impedance <of a relay> quotient of a voltage by a current for a passive linear two-terminal element or two- terminal circuit with terminals A and B under sinusoidal conditions [SOURCE: IEC 60050-131:2013, 131-12-43, modified – The definition has been replaced] 3.8.5 isolation <of a relay> ratio of the power delivered to the output port of a relay, with open contacts, at a specific frequency, compared to the power emitted from the corresponding output port 3.8.6 insertion loss resulting from the insertion of a network into a transmission system, the ratio of the power delivered to that part of the system following the network, before insertion of the network, to the power delivered to that same part after insertion of the network Note 1 to entry: The insertion loss is generally expressed in decibels. [SOURCE: IEC 60050-726:1982, 726-06-07]