Causes of Heating of Automotive Relays
In this article, MEISHUO will introduce the causes of the heating of automotive relays.
How to Detect the Quality of Automotive Relays?
a. Open Circuit Detection
The resistance measurement method with a multimeter can be used to check the quality of the relay. Use a multimeter to check that the pins (85) and (86), (87), and (87a) should be connected. The resistance between (87) and (30) should be ∞. If the check result is not consistent with the above rules, it indicates that there is a problem with the relay.
b. Power-on Detection
If there is no problem in the above inspection, you can add a 12V power supply between (85) and (86) pins, and use a multimeter to check that (87) and (30) should be connected. If the above rules are not met, or the relay heats up after power-on, it means that it has been damaged.
The solutions to the above phenomena are:
a. Abnormal heating occurs in the center of the contact, and the contact is fused, melted, dissolved solidified, etc., and the operation is not good. That is because the repeated switching of the contacts causes the continuous occurrence of opening and closing arcs;
b. The internal circuit of the relay is fused and the contact is melted and solidified, and the operation is not good. This is probably due to abnormal overcurrent exceeding the rated current of the contact;
c. The coil is partially short-circuited and fused, the coil is disconnected, and the coil remains abnormally heated. It may be an overvoltage applied to the coil;
The solutions to the above phenomena are:
a. For AC specification relays, the voltage should not be less than 90% of the rated voltage; for DC specification relays, the voltage should not be less than 79% of the rated voltage; avoid high-frequency switching;
b. Carry out safety design on the circuit to prevent the rated current exceeding the contact from flowing through the contact circuit;
c. Do not apply a voltage above the rated voltage to the coil.
- +1 Like
- Add to Favorites
This document is provided by Sekorm Platform for VIP exclusive service. The copyright is owned by Sekorm. Without authorization, any medias, websites or individual are not allowed to reprint. When authorizing the reprint, the link of www.sekorm.com must be indicated.
Recommend
Analysis of the Relay Industry
2024-05-04 - Technical Discussion This article will provide a brief analysis of the relay industry from three aspects: market size, product structure, and user research.
Selection Guide for Automotive Relays
2023-12-06 - Device Selection Article When selecting automotive relays, analysis and research can be carried out item by item according to the following points: shape and installation method, input parameters, output parameters, environmental conditions, electromagnetic compatibility, installation and use requirements.
Automotive Relay Storage Environment
2023-12-04 - Design Article MEISHUO will introduce the automotive relay storage environment in this article.
Hongfa Becomes the Industry‘s First Leader in Formulation Enterprises that Meet the National Standards for Automotive Relays
2024-06-22 - Manufacturer News Hongfa has become the first enterprise in the industry to lead the development of national standards for automotive relays, and this is the first time that a subsidiary of the group has taken on the task of leading the development of national standards.
Automotive Relays Plug-in Micro ISO Relays Micro Relay Low Noise
06-2011 - Datasheet
V23145-B1101-A402,3-1414773-5,V23145-A1101-A403
CAR100 SERIES Automotive Relay
2021/09/13 - Datasheet
CAR 1C P 100 DC12 - S -680R-D- XXXX,CAR100 SERIES AUTOMOTIVE RELAY
Power Relay F4 Automotive Relays Plug-in Mini ISO Relays
02-2017 - Datasheet
1-1414099-0,7-1904094-1,7-1904094-0,6-1393302-4,6-1393302-3,V23134-B1052-C642,6-1393304-8,V23134-C0053-C642,6-1393304-7,V23134-A1052-X294,4-1393303-7,4-1393303-4,6-1393302-0,4-1393303-8,V23134-A0052-X278,1-1393303-0,V23134-M1063-C642,V23134-C1052-X280,1-1393305-1,7-1904094-5,5-1393303-0,V23134-K1052-X399,V23134-B0052-X270,4-1414992-3,1-1414168-0,V23134-C1052-C642,V23134-A0052-G243,V23134-A1053-C643,V23134-A0052-C643,V23134-A1053-X295,V23134-B0052-X506,V23134-B1053-C642,V23134-A0056-X432,7-1393304-1,V23134-A0056-X433,7-1393302-5,7-1393304-4,V23134-M0062-C642,7-1393302-7,V23134-C1053-C642,1393303-9,4-1393302-1,V23134-B0052-G242,V23134-B1053-X296,3-1393303-9,3-1393303-8,V23134-M0053-G242,3-1393303-7,3-1393303-4,V23134-B0052-C642,V23134-M1052-C642,3-1904117-6,5-1393302-2,5-1393302-1,V23134-C0052-C642,V23134-M0052-G242,5-1393302-8,5-1393304-6,V23134-A0053-C643,5-1393304-7,V23134-B0053-G242,1-1414167-0,V23134-M0053-C642,V23134-A0053-G243,V23134-M0165-X539,V23134-B0053-C642,2-1393302-2,2-1393302-3,V23134-A1052-C643
Automotive Relays Plug-in Maxi ISO Relays Power Relay F7 A Latching
05-2014 - Datasheet
4-1904060-6,V23136-L0031-D642
Hongfa HFS60 Series Automotive Solid State Relays with Extended Temperature Range up to 125℃, Suitable for High Current Load Applications
2024-11-12 - Product Introduction Automotive solid-state relays not only greatly reduce the probability of relay failures in the vehicle, but also provide a guarantee for drivers and vehicle driving safety. They have the advantages of long life, high reliability, high sensitivity. low control power, good electromagnetic compatibility, etc.
Automotive Relays Plug-in Maxi ISO Relays Power Relay F7
07-2017 - Quick Reference Guide
8-1904094-3,0-1393304-9,1-1414147-0,9-1393303-7,1-1414469-0,1-1393304-1,1-1393304-0,POWERRELAYF7,1-1414610-0,3-1414937-3,7-1904094-9,3-1415001-2,7-1904094-8,7-1393303-3,1-1414286-0,3-1904117-5,3-1904117-4,7-1904094-7,8-1904094-0
查看更多版本
Automotive Relays Plug-in Micro ISO Relays Micro Relay A/VFMA
06-2015 - Datasheet
5- 1393292-8,8-1904105-3,9-1393292-9,VFMA-11F41-S01,VFMA-11H41-S01,V23074-H1005-A502,6-1393292-2,2- 1414971-4,9- 1904105-7,6-1393292-3,9-1904105-8,1393293-8,V23074-A1002-A402,1432885-1,V23074-A2002-A402,V23074-A2002-A403,6-1415008-2,6-1419137-4,6- 1419137-4,9-1414992-1,8-1393292-4,8-1393292-9,3- 1393292-8,8- 1904105-4,1393292-5,2-1414971-4,V23074-A1002-A403,3-1393292-8,VFMA-15F41-S01,2-1904111-7,VFMA-11F71-S01,V23074-A1001-A403,V23074-A1001-A402,V23074-A2001-A403,5-1393292-8,V23074-A2001-A402
Automotive Relays
2022/5/11 - Solutions
FTR-E5,FTR-K3-PS,FBR510,FTR-E1,FTR-E3,FBR53-HW,FTR-E1-HC,FTR-59-48V,FTR-P3-24V,FBR-580,FRL-270,FTR-P7,FTR-P1,FTR-P2,FTR-P3,FTR-P4,FTR-P5,FTR-P6,FTR-K3-PV,FBR56-HW,FBR51NL,FBR210,FBR57,FTR-K3,FBR52,FTR-K5,FTR-G1,FBR51,FTR-K6,FTR-K7,FBR53,FTR-G3,FTR-C1,FBR-51L,FTR-K1,FBR55-HW,FTR-V1-24V,FTR-B3,FBR59-HW,FTR-B4,FTR-V1-48V,SY,FBR520,FTR-J2,FBR53-HC,FTR-F1,FBR59-24V,FBR160,FTR-K3-WG,FTR-V1
Power Relay F7Automotive RelaysPlug-in Maxi ISO Relays
02-2017 - Datasheet
V23134-J0053-D642,1-1393304-1,1-1393304-0,7-1904094-98-1904094-0,V23134-J0052-X455,V23134-J0052-X511,V23134-J0052-X439,7-1904094-9,3-1415001-2,7-1904094-8,V23134-J1053-D642,1-1414286-0,3-1904117-5,3-1904117-4,7-1904094-7,8-1904094-3,0-1393304-9,1-1414147-0,V23134-J2165-X538,9-1393303-7,V23134-J1052-X281,V23134-J0052-X461,1-1414469-0,V23134-J0052-D642,1-1414610-0,3-1414937-3,V23134-J1052-D642,V23134-J0065-X497,V23134-J0052-X429,7-1393303-3,V23134-J0165-X537,8-1904094-0
Electronic Mall
Auth. Dist.
Auth. Dist.
Auth. Dist.
Auth. Dist.
Auth. Dist.
Auth. Dist.
Auth. Dist.
Auth. Dist.
Auth. Dist.
Auth. Dist.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
