Description:TECHNICAL FIELD
[0001] The present disclosure relates to under-voltage coil. More particularly the present disclosure relates an interlock lever assembly for an under-voltage coil.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Basically, the conventional method of tripping operation of circuit breaker happens through standard shunt trip coil. Sometimes customer requirement comes under special kind of operation for control voltage for tripping application whereas the trip voltage shall be less than the shunt trip voltage. In such kind of scenario undervoltage (UV) trip device such as an under-voltage coil are use. As a result, switchgear or control gear generate trip command during undervoltage. Under-voltage coils facilitates tripping of the voltage circuit breaker in case of an under-voltage condition. However,
[0004] There is, therefore, a need for an interlocking mechanism for locking a plunger of the under-voltage coils at any of its actuated and non-actuated stage for enabling or disabling the under-voltage coil.

OBJECTS OF THE PRESENT DISCLOSURE
[0005] Some of the objects of the present disclosure, which at least one embodiment herein satisfy are as listed hereinbelow.
[0006] It is an object of the present disclosure to provide an interlock lever assembly for an under-voltage coil, which ensure the high level of safety during nuisance tripping operation of the switchgear.
[0007] It is an object of the present disclosure to provide an interlock lever assembly for an under-voltage coil, which allow an operator to ensure operation of the circuit breaker before taking into service condition.
[0008] It is an object of the present disclosure to provide an interlock lever assembly for an under-voltage coil, which is cost-effective as no electronic components are used.
[0009] It is an object of the present disclosure to provide an interlock lever assembly for an under-voltage coil, which requires less maintenance as no electronic components are used.
[0010] It is an object of the present disclosure to provide an interlock lever assembly for an under-voltage coil, which is simple and easy to use.
[0011] It is an object of the present disclosure to provide an interlock lever assembly for an under-voltage coil, which controls in nescience tripping operation of the circuit breaker during under voltage control supply.

SUMMARY
[0012] The present disclosure relates to under-voltage coil. More particularly the present disclosure relates an interlock lever assembly for an under-voltage coil.
[0013] An aspect of the present disclosure pertains to an interlock lever assembly for an under-voltage coil. The interlock lever assembly include a supporting bracket adapted to be mounted the under-voltage coil therewith. An interlocking lever slidably configured with the supporting bracket through a guiding slot in the supporting bracket, the interlocking lever is configured to slide between a first position and a second position. Sliding the interlocking lever to the first position facilitates engaging a first end of the interlocking lever with a plunger of the under-voltage coil facilitating locking of the plunger in an initial position of the plunger.
[0014] In an aspect, a portion of the interlocking level may be accessed through a slot, for sliding between the first position and the second position, in a front panel of a voltage circuit breaker having the under-voltage coil electrically configured therewith.
[0015] In an aspect, a locking bracket may be coupled on the front panel for locking the interlocking lever at any of the first position and the second position using a pad lock.
[0016] In an aspect, the initial position of the plunger may correspond to an unactuated position when the under-voltage coil is fully energized.
[0017] In an aspect, sliding the interlock lever to the second position may facilitate disengaging of the first end of the interlocking lever from the plunder such that the plunger may be free to move to an actuated position, when the under-voltage coil is not fully energized due to under-voltage condition, for tripping the voltage circuit breaker.
[0018] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[0020] In the figures, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
[0021] FIG. 1A illustrates an exemplary representation of a conventional under-voltage coil.
[0022] FIG. 1B illustrates an exemplary representation of interlock lever assembly configured with the under-voltage coil, in accordance with an embodiment of the present disclosure.
[0023] FIG. 2A illustrates an exemplary representation of a front view of the under-voltage coil interlock lever assembly configured with front panel of a voltage circuit breaker, in accordance with an embodiment of the present disclosure.
[0024] FIG. 2B illustrates an exemplary representation of a side view of the under-voltage coil interlock lever assembly configured with front panel of a voltage circuit breaker, in accordance with an embodiment of the present disclosure.
[0025] FIG. 3A illustrates an exemplary representation of a first end of the interlock lever assembly engaged with the plunger of the under-voltage coil, in accordance with an embodiment of the present disclosure.
[0026] FIG. 3B illustrates an exemplary representation of a first end of the interlock lever assembly dis-engaged with the plunger of the under-voltage coil, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0027] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0028] In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.
[0029] The present disclosure relates to under-voltage coil. More particularly the present disclosure relates an interlock lever assembly for an under-voltage coil.
[0030] The present disclosure elaborates upon an interlock lever assembly for an under-voltage coil. The interlock lever assembly include a supporting bracket adapted to be mounted the under-voltage coil therewith. An interlocking lever slidably configured with the supporting bracket through a guiding slot in the supporting bracket, the interlocking lever is configured to slide between a first position and a second position. Sliding the interlocking lever to the first position facilitates engaging a first end of the interlocking lever with a plunger of the under-voltage coil facilitating locking of the plunger in an initial position of the plunger.
[0031] In an embodiment, a portion of the interlocking level can be accessed through a slot, for sliding between the first position and the second position, in a front panel of a voltage circuit breaker having the under-voltage coil electrically configured therewith.
[0032] In an embodiment, a locking bracket can be coupled on the front panel for locking the interlocking lever at any of the first position and the second position using a pad lock.
[0033] In an embodiment, the initial position of the plunger can correspond to an unactuated position when the under-voltage coil is fully energized.
[0034] In an embodiment, sliding the interlock lever to the second position can facilitate disengaging of the first end of the interlocking lever from the plunder such that the plunger can be free to move to an actuated position, when the under-voltage coil is not fully energized due to under-voltage condition, for tripping the voltage circuit breaker.
[0035] FIGs. 1A-1B, 2A-2B, and 3A-3B illustrate exemplary representations of an interlock lever assembly 100 for an under-voltage coil 200. The interlock lever assembly 100 can include a supporting bracket 102 adapted to be mounted the under-voltage coil 200 therewith. An interlocking lever 102 can be configured with the supporting bracket 102 through a guiding slot in the supporting bracket 102. The interlocking lever 104 can be configured to slide between a first position and a second position.
[0036] In an embodiment, sliding the interlocking lever 104 to the first position can facilitate engaging a first end 104-1 of the interlocking lever 104 with a plunger 202 of the under-voltage coil 200. This can facilitate locking of the plunger 202 in an initial position of the plunger. The initial position of the plunger 202 can correspond to an unactuated position when the under-voltage coil 200 is fully energized.
[0037] In an embodiment, a portion 104-A of the interlocking level 104 can be accessed through a slot 302 in a front panel 300 of a voltage circuit breaker having the under-voltage coil 200 electrically configured therewith. The slot (not shown) can be used for sliding the interlocking lever 104 manually between the first position and the second position. A locking bracket 304 can be coupled on the front panel 300 for locking the interlocking lever 104 at any of the first position and the second position using a pad lock.
[0038] In an embodiment, sliding the interlock lever 104 to the second position can facilitate disengaging of the first end of the interlocking lever from the plunder such that the plunger can be free to move to an actuated position, when the under-voltage coil is not fully energized due to under-voltage condition, for tripping the voltage circuit breaker.
[0039] Moreover, in interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
[0040] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions, or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[0041] The proposed invention provides an interlock lever assembly for an under-voltage coil, which ensure the high level of safety during nuisance tripping operation of the switchgear.
[0042] The proposed invention provides an interlock lever assembly for an under-voltage coil, which allow an operator to ensure operation of the circuit breaker before taking into service condition.
[0043] The proposed invention provides an interlock lever assembly for an under-voltage coil, which is cost-effective as no electronic components are used.
[0044] The proposed invention provides an interlock lever assembly for an under-voltage coil, which requires less maintenance as no electronic components are used.
[0045] The proposed invention provides an interlock lever assembly for an under-voltage coil, which is simple and easy to use.
, Claims:1. An interlock lever assembly for an under-voltage coil, the interlock lever assembly comprises:
a supporting bracket adapted to be mounted the under-voltage coil therewith;
an interlocking lever slidably configured with the supporting bracket through a guiding slot in the supporting bracket, the interlocking lever is configured to slide between a first position and a second position, wherein sliding the interlocking lever to the first position facilitates engaging a first end of the interlocking lever with a plunger of the under-voltage coil facilitating locking of the plunger in an initial position of the plunger.

2. The interlocking lever assembly as claimed in claim 1, wherein a portion of the interlocking level is accessed through a slot, for sliding between the first position and the second position, in a front panel of a voltage circuit breaker having the under-voltage coil electrically configured therewith.

3. The interlocking lever assembly as claimed in claim 1, wherein a locking bracket is coupled on the front panel for locking the interlocking lever at any of the first position and the second position using a pad lock.

4. The interlocking lever assembly as claimed in claim 1, wherein the initial position of the plunger corresponds to an unactuated position when the under-voltage coil is fully energized.

5. The interlocking lever assembly as claimed in claim 1, wherein sliding the interlock lever to the second position facilitates disengaging of the first end of the interlocking lever from the plunder such that the plunger is free to move to an actuated position, when the under-voltage coil is not fully energized due to under-voltage condition, for tripping the voltage circuit breaker.