What are the common roles of relays?

What are the common roles of relays?

The number of industries using relays is increasing, so what are the different characteristics of relays in each field?

1. Household appliances: air conditioning relays are mainly used to control shrink machine motors, fan motors and cooling pump motors to perform related control functions. Home appliance shrink motor, power individual 1 to 3 horsepower; fan motor and cooling pump motor for 1 ÷ 4 to 2 horsepower. Because of the load start-up, a large inrush current emerges, about six times the full-load operating current. The time required for the shrink motor to reach full speed is long, and this forms a major threat to the relay contacts, so the load capacity of the relay is requested to leave sufficient margin; the contacts jump back when the relay is requested to be cleared as far as possible; the household appliance control board relay is requested to be released as fast as possible to increase the contacts jump back. The safety requirements are severe and need to be certified by a safety certification body.

2. The automotive field: the automotive industry is increasingly common use of relays. Rare automotive relays are: start motor start relay, horn relay, motor or generator break relay, charging voltage and current regulation relay, change signal flash relay, light brightness control relay and air conditioning control relay, sliding door active opening and closing control relay; glass window lift control relay.

3. Industrial relays: In industry, important mastering functions are achieved by general exchange relays. The relays are usually driven by push buttons or limit switches. The contacts of the relays can master solenoid valves, larger starter motors as well as guiding lights.

继电器常见的作用有哪些？

运用继电器的行业越来越多，那么继电器在各个领域都有哪些不同的特征呢？

1、家用电器：空调继电器主要用于掌握收缩机电动机、风扇电动机和冷却泵电动机，以履行相干的掌握功用。家电收缩机电动机，功率个别为1到3马力；风扇电动机和冷却泵电动机为1÷4到2马力。因为负载启动霎时，涌现很大的浪涌电流，约为满载运行电流的6倍。收缩机电动机到达全速所需时光较长，这对继电器触点形成重大的要挟，于是，请求继电器的负载才能留有充足裕量；请求尽能够清除继电器吸动时触点回跳；请求家用电器掌握板继电器开释快，尽能够增加触点回跳。平安性请求严厉，需经平安认证机构的认定。

2、汽车领域：汽车工业正在越来越普遍地运用继电器。对比罕见的汽车继电器有：启动电动机的启动继电器、喇叭继电器、电动机或发电机断路继电器、充电电压和电流调理继电器、改变信号闪光继电器、灯光明度掌握继电器以及空调掌握继电器、推拉门主动开闭掌握继电器；玻璃窗升降掌握继电器。

3、工业继电器：在工业上，重要的掌握功能由通用交换继电器实现。通常由按纽或限位开关驱动继电器。继电器的触点能够掌握电磁阀、较大的启动电机以及指导灯。