What is free potential, Physics

Assignment Help:

Potential free contacts (also known as "dry contacts") are simply contacts which are physically operated with the main device, but not electrically connected to it. For example a motor contactor often has auxiliary contacts that are operated by the main coil and open and close at the similar time as the main contacts but are not used for control of the motor starter. If they are connected to an outside circuit to shows the status of the starter without being powered by the motor supply they would be considered potential free contacts.
These type also called Signal-Contacts.

In case of relays and switches if the common/pole is connected internally to a given potential like a 110V phase etc., the contact is not POTENTIAL FREE but if both the common and the normal open (and at time also the normally closed) contacts are presented to the user for connecting in his system as he pleases,the contact is said to be "potential-free"


Related Discussions:- What is free potential

Give the applications of moseley''s law, Q. Give the applications of Mosele...

Q. Give the applications of Moseley's law. (i) The elements are organized in the periodic table according to the atomic numbers and not according to the atomic weights. (ii

Explain the picture-archiving system, Question 1. Explain the picture-a...

Question 1. Explain the picture-archiving system used in diagnostic imaging departments. 2. Discuss the role of Medical Imaging Informatics in modern radiology departments.

Calculate the magnitude of the induced field, A long solenoid has a diamete...

A long solenoid has a diameter of 10.4cm. When a current I exists in its windings, a uniform magnetic field of magnitude B=37.7 mT is produced in its interior. By decreasing I, the

Curie weiss law for ferromagnetism, The first question one might ask about ...

The first question one might ask about ferromagnetic material is the source of the large magnetism. The saturation magnetization is so large virtually all the magnetic dipoles in t

Advance of the perihelion, Advance of the Perihelion Together along wit...

Advance of the Perihelion Together along with the deviation of light rays near the Sun the change of the orientation of Mercury's orbit century after century is a single of the

What is meant by tunnelling phenomenon, What is meant by tunnelling phenome...

What is meant by tunnelling phenomenon? A tunnel diode is a high conductivity two-terminal P-N junction doped heavily about 1,000 times higher than a conventional junction diod

Explain simple pendulum, If a great point-mass is removed by a weightless, ...

If a great point-mass is removed by a weightless, inextensible and perfectly flexible string from a rigid support, then this arrangement is known as a simple pendulum.

Besides solid, Besides solid, liquid, and gas, what is the fourth form of m...

Besides solid, liquid, and gas, what is the fourth form of matter? Ans: The fourth form of matter is plasma.

Forces in equilibrium, A 50 newton light fixture is supported by two guy wi...

A 50 newton light fixture is supported by two guy wires as shown. Determine the tension in each wire

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd