to control a high-current circuit with a low-current signal for example a starter on a car uses a very high current (not voltage) and needs thick cable to provide it.
it would be impractical to run this thick cable up to the ignition key so a lower current from the starter key operates a switch, usually electro magnet, which in turn completes a circuit for the higher current.
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kinds of electrical relays
relays which operate by signalling alarms notifying the type of the fault
Depending on the size of the transformer, it can be protected by fuses, thermal elements, or by a full relay protection package, which could include overcurrent relays, differential relays, and distance relays.
A 'power transformer' is a category of transformer used within electricity transmission and primary distribution systems. Relays are widely used with power transformers to provide various types of protection that will act to disconnect the transformer in the event of a fault. Examples of these relays include Buchholz relays, earth-fault relays, and differential relays. Relays are also used to operate a power transformer's automatic tap-changing mechanism in order to compensate for changes in load.
Current relays are the relay which sens the current passing in particular circuit and operates when this current exceed its set value.
relays are two type 1. Electromagnetic attraction relays. 2. Electromagnetic induction relays.
looking for relays in citreon xzara
Kansas Relays was created in 1923.
Relays are bidirectional devices.
There is no such thing as "tandem relays" in baseball.
kinds of electrical relays
3 relays
Mt. SAC Relays was created in 1959.
relays will be found on inerfenders or firewall
relays which operate by signalling alarms notifying the type of the fault
Relays with Forcibly Guided Contacts Relays with Forcibly Guided Contacts
where is located ford expedition 1999 relays