DESC:TECHNICAL FIELD

The present invention relates generally to a Make- Break testing of relay for utilization category -AC- 15 and, particularly, to the Make- Break Testing of Relay (NC contact) for utilization category -AC-15.

BACKGROUND

Earlier we used to do the Make and Break testing of relay (NC contact) with the help of the two pneumatic cylinders, where one is used to trip the relay and other is used to reset the relay.

In the above stated testing, relay has to carry current for the specified time and two pneumatic has to use. One is to trip the relay and another is to reset the relay. Basic arrangement of test setup is shown in figure 1.

As shown in figure 2, while testing, when relay gets ON after some millisecond time interval, pneumatic (4) is used to trip the relay. If relay is not set on auto reset mode, another pneumatic (5) needs to be arranged to reset the relay is shown in figure 3.

The sequence of test is, first relay gets ON, after that pneumatic cylinder (4) trip the relay and after tripping of relay, pneumatic (5) resets the relay.

In this sequence when relay ON contacts gets closed and supply start from Incoming terminal (2) to outgoing terminal (3), after some millisecond pneumatic cylinder (4) operates on command of PLC/timer. The pneumatic cylinder has to travel distance from zero position to trip contact. This takes some time delay in tripping operation. After tripping of relay, pneumatic cylinder (5) receives command by PLC / Timer. The operation of pneumatic cylinder (5) reset the relay as shown in figure 3.

The testing relay with the help of pneumatic is not a better, because for doing Make- Break AC-15 testing of relay.

- Two pneumatic has to operate for a single operation which will affect the frequency of the test.
- As the operation of the pneumatic depends upon the air pressure which is not constant and which may increase or decrease the speed of the pneumatic which in turn increases or decreases the current carrying time of relay which can affect test data accuracy.
- Because of high torque of pneumatic it is not suit for small and fragile products.
- Length of pneumatic piston is fixed so there is no option for length adjustment, hence affects flexibility.
- For Critical and low torque operation pneumatic cylinder is not a better option.
- Distance between fixed contact and moving contacts in relay is very low which is in mm. High air pressure of pneumatic cylinder arrangement can change which can damage the contact of relay.
- Pneumatic cylinder system required complex air supply piping system which is not the case electromagnetic coil.

Thus, there is a need to overcome the problems of the prior art.

SUMMARY

This summary is provided to introduce concepts related to a Make- Break testing of relay for utilization category -AC- 15. This summary is not intended to identify essential features of the subject matter nor is it intended for use in determining or limiting the scope of the subject matter.

An aspect of the present invention is to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below.

Accordingly, an aspect of the present invention is more reliable and easy test setup for Make- Break of NC Contact of Relay for AC-15 utilization category.

Accordingly, in one implementation, a system for a relay circuit making and breaking is provided. The system comprises of at least two electromagnetic coils (12, 13) operable by one or more electrical supply (14), wherein each electromagnetic coils (12, 13) comprises at least two magnets a fixed magnet (15) and a moving magnet (16);one or more wire coil(s) (17) wound over said moving magnet (16), and configured to move said moving magnet (16); and wherein when said electrical supply (14) is provided to said coil (17), said coil (17) gets energized and because of magnetic force said moving magnet (16) from zero position to trip/reset button.

In one implementation, a method for a relay circuit making and breaking is disclosed. The method comprises of:
· providing at least two electromagnetic coils (12, 13) operable by one or more electrical supply (14), wherein said at least two magnets a fixed magnet (15) and a moving magnet (16);
· winding one or more wire coil(s) (17) over said moving magnet (16), wherein said wire coil(s) (18) is configured to move said moving magnet (16); and thereby energizing said coil (17) to produce magnetic force, and moving said moving magnet (16) from zero position to trip/reset button.

Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

In one implementation, a dimension of moving magnet is very low so that the travelling of moving magnet is also very low.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.

Figure 1 illustrates a basic arrangement of test setup is shown as available in the prior-art.

Figure 2 illustrates testing when relay gets ON after some millisecond time interval, pneumatic (4) is used to trip the relay, is shown as available in the prior-art.

Figure 3 illustrates if relay is not set on auto reset mode, another pneumatic (5) needs to be arrange to reset the relay as shown is shown as available in the prior-art.

Figure 4 illustrates a system using the two electromagnetic coils (12, 13), in accordance with the present invention.

Figure 5 illustrates the internal cross section of electromagnetic coil, in accordance with the present invention.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

Preferred embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail.

The terms and words used in the following description are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention.

It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.

By the term “substantially” it is meant that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to those of skill in the art, may occur in amounts that do not preclude the effect the characteristic was intended to provide.

In one implementation, the invention relates generally to the reliable, easy and time saving method of make break testing of relay for AC-15 where the present invention uses the electromagnetic coil instead of pneumatic to operate the relay which will:
- Increase the mechanical life of relay because the force/torque exerted by the electromagnetic coil is less compared to pneumatic therefore using electromagnetic coil for relay testing is more reliable method.
- Will give the constant operating time of relay.
- Set up making time will reduce.
- Very compact setup as compare to pneumatic cylinder setup.

The following given abbreviation may be used throughout the specification:

1. Supports
2. Power incoming terminal
3. Power outgoing terminal
4. Pneumatic cylinder for trip knob.
5. Pneumatic cylinder for reset knob.
6. Air inlet/outlet for pneumatic cylinder
7. Piston of Pneumatic cylinder 4.
8. Piston of Pneumatic cylinder 5.
9. Trip knob of relay
10. Reset knob of relay
11. Relay
12. Electromagnetic coil for trip knob.
13. Electromagnetic coil for reset knob.
14. Control supply terminal of electromagnetic coil.
15. Fixed magnet.
16. Moving magnet.
17. Wire wound coil
18. Return Spring for moving magnet.

The above and other aspects, features, and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which:

As shown in figure 4, the two electromagnetic coils (12, 13) instead of two pneumatic cylinders (4, 5); Because of electromagnetic coils operate on electrical supply there no air pressure is required for operation. The size of electromagnetic coil (12, 13) is very compact as compare to pneumatic cylinder (4, 5).

The sequence of test with this concept is same as of earlier. But travelling distance from zero position to trip button / reset button is very low. So it is highly suitable for moving contact of relay which is small and fragile. Also low distance traveling requires minimum time which gives proper operation frequency, which will overcome the disadvantages of using pneumatic and will provide the accurate and reliable way for testing.

A shown in figure 5 the internal cross section of electromagnetic coil; in the electromagnetic coil there are two magnets one is fixed magnet (15) and other is moving magnet (16). Around the moving magnet one wire wound coil is there, which is used for moving the magnet by electromagnetic force. When supply (14) is provided to coil (17), coil gets energized and because of magnetic force moving magnet starts moving. The spring (18) is used for returning the moving magnet to zero position. The less torque of electromagnetic coil is more suitable for small and fragile products.

Accordingly, in one implementation, a system for a relay circuit making and breaking is provided. The system comprises of at least two electromagnetic coils (12, 13) operable by one or more electrical supply (14), wherein each electromagnetic coils (12, 13) comprises at least two magnets a fixed magnet (15) and a moving magnet (16); one or more wire coil(s) (17) wound over said moving magnet (16), and configured to move said moving magnet (16); said coil (17) coupled to said electrical supply (14); and wherein when said electrical supply (14) is provided to said coil (17), said coil (17) gets energized and because of magnetic force said moving magnet (16) from zero position to trip/reset button.

In one implementation, a method for a relay circuit making and breaking is disclosed. The method comprises of:
· providing at least two electromagnetic coils (12, 13) operable by one or more electrical supply (14), wherein said at least two magnets a fixed magnet (15) and a moving magnet (16);
· winding one or more wire coil(s) (17) over said moving magnet (16), wherein said wire coil(s) (18) is configured to move said moving magnet (16); and thereby energizing said coil (17) to produce magnetic force, and moving said moving magnet (16) from zero position to trip/reset button.

In one implementation, at least one spring (18) configured to return said moving magnet (16) to zero position.

In one implementation, said moving magnet (16) is enclosed in coil (17) which is further enclosed in said fixed magnet (15).

In one implementation, the coil may be made up of any material used for making conventional coils. However, in the present invention, the coil is preferably made up of copper material.

Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure.

Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Accordingly the present invention provides more reliable and easy set up for Make Break testing of NC Contact of Relay for AC-15 utilization category. Electromagnetic coil: An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. It consists of an electromagnet surrounded by a coil.

Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features:

One features of the invention is that, in the presented invention, overcomes the disadvantages/drawbacks of the known art.

Another feature of the present invention is that it reduces the set up making time of relay for Make- Break testing of relay (AC-15) and will provide the accurate & reliable test result without any damage of test unit.

Another feature of the invention is that, a more reliable & easy test set up for make break testing of relay (AC-15).

Yet another feature of the invention is that, it will give the constant relay operating time every time it operates.

Yet another feature of the invention is that, it will not damage the relay as the torque of electromagnetic coil is adjustable, so it is suitable for operating small & fragile products.

Still another feature of the invention is that, an air supply not required for the processing of the invention.

Although a make- break testing of relay for utilization category -AC- 15is been described in language specific to structural features and/or methods, it is to be understood that the embodiments disclosed in the above section are not necessarily limited to the specific features or methods or devices described. Rather, the specific features are disclosed as examples of implementations of a make-break testing of relay for utilization category -AC- 15.
,CLAIMS:1. A system for a relay circuit making and breaking, CHARACTERIZED IN THAT, COMPRISING:
at least two electromagnetic coils (12, 13) operable by one or more electrical supply (14), wherein each electromagnetic coil (12, 13) comprises:
at least two magnets a fixed magnet (15) and a moving magnet (16);
one or more wire coil(s) (17) wound over said moving magnet (16) and coupled to said electrical supply (14), and is configured to move said moving magnet (16); wherein when said electrical supply (14) is provided to said coil (17), said coil (17) gets energized and because of magnetic force said moving magnet (16) from zero position to trip/reset button.

2. The system as claimed in claim 1 comprises at least one spring (18) configured to return said moving magnet (16) to zero position.

3. The system as claimed in claims 1 and 2, wherein said moving magnet (16) is enclosed in coil (17) which is further enclosed in said fixed magnet (15).

4. A method for a relay circuit making and breaking comprising:
providing at least two electromagnetic coils (12, 13) operable by one or more electrical supply (14), wherein said at least two magnets a fixed magnet (15) and a moving magnet (16);
winding one or more wire coil(s) over said moving magnet (16), wherein said wire coil(s) (18) is configured to move said moving magnet (16); and
providing said electrical supply (14) to at least one coil (17), thereby energizing said coil (17) to produce magnetic force, and moving said moving magnet (16) from zero position to trip/reset button