What is a relay dry contact?
Dry contact can refer to a secondary set of contacts of a relay circuit which does not make or break the primary current being controlled by the relay. Usually some other contacts or devices have the job of starting or stopping the primary current being controlled.
What is anti pumping relay?
The anti-pumping relay is a device in circuit-breaker whose function is to prevent multiple breaker closures. For instance, if the operator gives the closing command to the breaker by pressing the close button and the breaker closes.
What is the purpose of the auxiliary?
Auxiliary, in grammar, a helping element, typically a verb, that adds meaning to the basic meaning of the main verb in a clause. Auxiliaries can convey information about tense, mood, person, and number.
What is auxiliary contact?
Auxiliary contacts, also known as auxiliary contactors are electromechanical devices used in conjunction with primary switching equipment such as contactors, circuit breakers, switches, and relays. These secondary switching devices are physically connected to the main switching equipment and work at the same time.
How does an AUX contact work?
Auxiliary contacts are secondary switching devices that work in conjunction with primary switching equipment such as circuit breakers, relays, and contactors. These contacts are physically linked to the main switching mechanism and activate at the same time it does.
How does an auxiliary switch work?
Auxiliary switches provide remote electrical indication if the circuit breaker is open or closed. They are provided as two-switch combinations, with a maximum of two two-switch combinations for the NF frame and six two-switch combinations for the RF frame.
What is a normally open contact?
Normally open – Is a contact that does not flow current in its normal state. Energizing it and switching it on will close the contact, causing it to allow current flow. Normally closed – Is a contact that flows current in its normal state.
What is free contact?
A volt free contact is a contact without any voltage on it. It is usually supplied in a system for other parties to use and they then supply their own voltage into their own system eg: to a BMS system.
What is the function of a closed switch?
A closed switch is one that provides a direct (low resistance) path for current to flow through.