Claims:
1. A modular finger separator (MFS), comprising:
a button (MFS) configured with a fitment attached to a separator, wherein the separator is a solid circular disc and the fitment is a solid cylinder substantially along geometrical central axis of the separator.
2. The MFS as claimed in claim 1, wherein the MFS serves as spacer between adjacent fingers of switchgear assembly with height of the separator equal to desired separation between the fingers.
3. The MFS as claimed in claim 2, wherein the fitment of the MFS snap fits individually into at least one well or groove provided in the fingers.
4. The MFS as claimed in claim 1, wherein two quantity of the button (MFS) fit at both sides of a finger on same plane locations, wherein one button fits towards top and another button fits towards bottom of the finger.
5. The MFS as claimed in claim 1, wherein two quantity of the button (MFS) fit at both sides of a finger in an alternate fashion, wherein one button fits towards top of one plane and another button fits towards bottom of opposite plane of the finger.
6. The MFS as claimed in claim 1, wherein diameter of the fitment is less than diameter of the separator.
7. The MFS as claimed in claim 1, wherein the button is made of a material selected from any or a combination of the group consisting of glass, nylon 6 (with or without glass filled), and nylon 6,6 (with or without glass filled).
8. A switchgear assembly that uses one or more fingers, comprising:
at least one modular finger separator (MFS) shaped as a button configured with a fitment attached to a separator, wherein the separator is a solid circular disc and the fitment is a solid cylinder substantially along geometrical central axis of the separator,
wherein the MFS serves as spacer between adjacent fingers of the one or more fingers of switchgear assembly with height of the separator equal to desired separation between the adjacent fingers.
9. The switchgear assembly as claimed in claim 8, wherein diameter of the fitment is less than diameter of the separator.
10. The switchgear assembly as claimed in claim 8, wherein the fitment of the MFS snap fits individually into at least one well of the one or more fingers.

, Description:

TECHNICAL FIELD
[0001] The present disclosure generally relates to the field of switchgears. In particular, the present disclosure pertains to modular separators. More specifically, the present disclosure relates to a modular separator for fingers or conductors of a multiple conductor contact assembly.

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] Current technological trend in modern circuit breakers is to use multiple fingers or multiple conductors moving contact assembly, where fingers or conductors used are of same cross section in order to carry the rated current, to withstand the fault current and to break the fault current. To minimize the high repulsive force, current sharing technology using multiple fingers or multiple conductor assembly is being used in latest switchgears, especially in circuit breakers.
[0004] To give effect to at least the objectives as aforementioned, finger separator or finger spacer in different form can be used. Most often than not, finger spacers are a built-in feature of pole cage assembly or pole assembly itself, which can be a tooled component and can be of insulating material to separate each finger electrically to have the desired results. In case of a metal pole cage assembly or pole assembly, finger spacer or finger separator are mostly separate tooled components, of insulating material, which can be assembled or fit into the finger assembly and in the pole cage assembly. Due to proximity effect of intra phase and inter phase current carrying fingers, this current sharing by the multiple fingers in a single phase is not uniformly distributed. Thus, in case of each finger for an alternating current cycle, the maximum instantaneous current magnitude is different so each finger carries a maximum current of different magnitude. Also, for each finger at a particular time instant, the instantaneous current magnitude is different so each finger carries a current of different magnitude in a multiphase alternating current circuit breaker. In other terms, the RMS value and the peak value of current flown through each finger for a full cycle of current waveform is different and at a particular time instant the instantaneous value of the current flow through each finger is also different. This non-uniform distribution of current limits and decreases the current carrying capability, fault current withstand capability, fault current breaking capability, and performance of a circuit breaker. This uneven instantaneous current distribution among the multiple fingers of the multiphase circuit breaker also decreases the temperature rise performance and electrical life as well.
[0005] If in a multiphase alternating current circuit breaker maximum instantaneous current per phase stands as I, then for n fingers for that instant average current per finger will be I/n, but due to proximity effect of intra phase and inter phase current carrying fingers, it is observed that the maximum instantaneous current in each finger in a single phase is either < I/n or > I/n and also each finger carries a current of different magnitude at a particular time instant. In a phase among the n numbers of contact finger, only 1 finger sees the maximum instantaneous current in a full cycle current wave form, other fingers experience comparatively less maximum instantaneous current in a full cycle current wave form. In some fingers in a phase, the maximum current can be as high as 2 to 3 times of the average per finger current and in some fingers in a phase, the maximum current can be as low as 0.5 times of the average per finger current. The factor (say x) that is [current in any particular finger/(I/n)] can vary from fraction to n depending upon some other operating factors. In general for a short circuit current waveform with short circuit peak in the Y phase, the side most finger of Y phase adjacent to the B phase carries the maximum current due to proximity effect. This uneven distribution of current among the multiple fingers in a single phase contact system in a multiple phase circuit breaker depends upon many factors like number of phases, number of poles per phase, phase angles, phase shift angle between phases, breaker closing point on wave, frequency of alternating current, waveform shape, breaker construction, pole width, gap between fingers, finger profile, number of fingers in a particular phase, proximity of ferromagnetic material and other potential and influential factors that can effect magnetic flux lines distribution and magnitude and depending upon these factors the maximum current and least current flows through a particular contact finger as aforementioned.
[0006] Technically speaking, electromagnetic torque acting on the movable conductors (i.e. fingers) can be divided into repulsion torque, tilting torque, and sliding torque according to direction/sense. Compared with the torque of the contact spring force, repulsion toque decides whether the movable contact would be repulsed away from the fixed one. Tilting torque may tilt the movable conductor, and increase the contact resistance. As for Sliding torque, it may make the movable contact slide along the fixed contact. It can be seen that the contact reliability is significantly affected with the existence of tilting torque and sliding torque, especially under high short-circuit current.
[0007] It is found that the electromagnetic torque due to the flowing current tilts and slides each finger. It is also found that the peak tilting torque and peak sliding torque values of outer movable finger(s) are considerably larger than those of the inner ones. It tilts the outer movable finger(s) towards the middle of each phase and the sliding torque slides the head of the outer movable finger(s) (or conductors) toward the middle of each phase too. So due to these torques all the fingers are having less dynamic stability and the dynamic stability of the side most or outer most fingers of each phase is comparatively lesser.
[0008] So, prominent drawbacks in the art do not ensure dynamic stability of moving fingers against electromagnetic tilting and sliding torque. There have been efforts to design finger separator (alternatively, finger spacer) that are a separate tooled component, of insulating material, which can be assembled or fit into a finger assembly and in pole cage assembly. And these components guide the finger in the middle portion of its lengthwise profile. So the finger head or contact button is exposed to the sliding and tilting torque without any separator guidance or support. In case of a little large tolerance or gap in between the fingers and the finger spacer or separator or in case of lower thickness of the finger separator or finger spacer, the finger and hence the contact button tilts and slides in case of high current electromagnetic torque. This decreases the dynamic stability of the contact finger and hence contact button. So the contact area of the contact buttons get varied and in case of lower contact area due to high repulsion force at contact button area micro opening happens, which leads to finger repulsion and ultimately total contact finger or pole opening due to cascading effect, so it deteriorates Icw and fault clearing or breaking performance of circuit breaker. In case of more sliding of fingers and hence contact buttons, contact area varies and hence the contact resistance varies. In case of higher contact resistance temperature increases and contacts get more eroded and the erosion surface gets increased due to material transfer while sliding of the contacts. This also leads to temperature rise of the contacts and hence it deteriorates the thermal performance of the circuit breaker. So the higher sliding of fingers and contacts, higher contact resistance, high current density, high temperature, high repulsive force, higher erosion of contacts, higher erosion surface of contacts, all are interconnected and cascaded effect that decreases the circuit breakers’ Icw, Icm , Icu, current breaking and current carrying performance.
[0009] Furthermore, there are other shortcomings with finger separator(s) built into pole cage or pole case that generally is a tooled component. Whenever there is any design change/iteration/update for finger profile length and/or size for higher rating of circuit breakers or for any other design purpose, the pole cage or pole case and the tolled finger separator limits the scope and any change, if necessary, makes it a costly affair as evident.
[0010] There is, therefore, a need in the art to provide a simple, compact and modular finger separator so as to obviate aforementioned shortcomings encountered in the art.
[0011] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[0012] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[0013] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0014] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[0015] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

OBJECTS OF THE INVENTION
[0016] A general object of the present disclosure is to provide for a simple, compact and economical finger separator that obviates shortcomings encountered with conventional finger separators for switchgears.
[0017] An object of the present disclosure is to provide a modular finger separator that ensures desired current sharing among fingers in order to obviate repulsive action there between.
[0018] An object of the present disclosure is to provide substantial dynamic stability against tilting and sliding torques acting on finger(s) by presence of a modular finger separator.
[0019] Yet another object of the present disclosure is to provide a modular design of finger separators in order to avoid losses from temperature rise, fault current breaking among other benefits.

SUMMARY
[0020] Aspects of the present disclosure generally relate to the field of switchgears. In particular, the present disclosure pertains to modular separators. More specifically, the present disclosure relates to a modular separator for fingers of a multiple conductor contact assembly.
[0021] In an aspect, the present disclosure provides a modular finger separator (MFS) that includes a button configured with a fitment, wherein the separator can be a solid circular disc and the fitment can be a solid cylinder substantially along geometrical central axis of the separator, wherein diameter of the fitment can be less than diameter of the separator.
[0022] In an aspect, MFS can serve as spacer between adjacent fingers of switchgear assembly, wherein height of separator (of the MFS) can be equal to desired separation between the adjacent fingers, wherein the separator of the MFS can snap fit into one or more wells or grooves of fingers.
[0023] In an exemplary aspect, two quantity of MFS can fit at both sides of a finger on same plane locations, wherein one button can fit towards top and another button can fit towards bottom of the finger.
[0024] In an alternate aspect, two quantity of MFS can fit at both sides of a finger in an alternate fashion, wherein one button can fit towards top of one plane and another button can fit towards bottom of opposite plane of the finger.
[0025] In an embodiment, MFS can be made of a material selected from any or a combination of the group consisting of glass, nylon 6 (with or without glass filled), and nylon 6,6 (with or without glass filled).
[0026] In an aspect, the present disclosure provides a switchgear assembly that can use one or more fingers that can, in turn, include at least one modular finger separator (MFS) that can be shaped as a button configured with a fitment attached to a separator, wherein the fitment can be a solid circular cylinder and the separator can be a solid circular disc substantially along geometrical central axis of the fitment, wherein the MFS can serve as separator between adjacent fingers of the one or more fingers of switchgear assembly with height of the fitment equal to desired separation between the fingers. Notably, diameter of the separator can be greater than diameter of the fitment.
[0027] In an aspect, separator of the MFS can snap fit individually into at least one well of one or more fingers.
[0028] 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 THE DRAWINGS
[0029] 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.
[0030] FIGS. 1A and 1B illustrate exemplary side view and perspective views of a modular finger separator (MFS) in accordance to an embodiment of the present disclosure.
[0031] FIGS. 1C and 1D illustrate exemplary side view and perspective views of a MFS in a finger assembly (alternatively, finger) at two locations, one towards top and another towards bottom of the finger assembly in accordance to an embodiment of the present disclosure.
[0032] FIG. 1E illustrates exemplary exploded view of MFSs in relation to a finger assembly in accordance to an embodiment of the present disclosure.
[0033] FIGS. 2A and 2B illustrate exemplary front and side views of a part of a multiple finger contact assembly with MF at two locations, one towards top and another towards bottom of finger assembly in accordance to an embodiment of the present disclosure.
[0034] FIG. 2C illustrates exemplary side view of pole assembly of a multiple finger contact assembly in accordance to an embodiment of the present disclosure.
[0035] FIG. 2D illustrates exemplary perspective view of a multiple finger contact assembly in accordance to an embodiment of the present disclosure.
[0036] FIGS. 3A, 3B and 3C illustrate exemplary front, bottom perspective and top perspective views of MFS housed in an alternate fashion (one towards top of finger on one plane and another towards bottom of the finger on opposite plane) in a finger assembly in accordance to an embodiment of the present disclosure.
[0037] FIGS. 3D and 3E illustrate exemplary front and side views of a part of a multiple finger contact assembly with MFS in an alternate fashion in accordance to an embodiment of the present disclosure.
[0038] FIGS. 4A and 4B illustrate exemplary perspective and side views of a multiple finger contact assembly with MFSs in alternate fashion in a finger assembly in accordance to an embodiment of the present disclosure.
[0039] FIGS. 4C, 4D and 4E illustrate perspective and side views of a multiple finger contact assembly with MFS only towards top of finger assembly in accordance to an embodiment of the present disclosure.
[0040] FIG. 5A illustrates perspective view of a complete breaker assembly in accordance to an embodiment of the present disclosure.
[0041] FIGS. 5B and 5C illustrate exemplary side and perspective cross sectional views of a part of a complete breaker assembly with MFSs in accordance to an embodiment of the present disclosure.
[0042] FIG. 6 illustrates exemplary cross section view of complete breaker assembly in accordance to an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0043] 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 spirit and scope of the present disclosure as defined by the appended claims.
[0044] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[0045] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0046] Embodiments of the present disclosure generally relate to the field of switchgears. In particular, the present disclosure pertains to modular separators. More specifically, the present disclosure relates to a modular finger separator (also referred to as finger spacer and both these terms used interchangeably hereinafter) that finds application in multiple conductor contact assembly.
[0047] As used herein, a person skilled in the relevant art would appreciate that “multiple conductor contact assembly” or “multiple finger contact assembly” or “circuit breaker” or “switch gear”, as used interchangeably throughout the present disclosure, refers to an assembly/system used in electrical tripping operations by action of a conductor(s) (herein finger(s)) on detection of a undesired condition such as over rated conditions (say high current).
[0048] FIGS. 1A and 1B illustrate exemplary side view and perspective views of a modular finger separator (MFS) 100, in accordance to an embodiment of the present disclosure, wherein the MFS 100 includes a button configured with a fitment 110 that can be attached to a separator 130, wherein the separator 130 can be a solid circular disc and the fitment 110 can be a solid cylinder substantially along geometrical central axis (marked as “x” axis in the instant figures) of the separator 130, wherein diameter of the fitment 110 can be less than diameter of the separator 130.
[0049] In an exemplary aspect, two quantity of button 100 (alternatively, MFS 100) can fit at both sides of a finger 150 (as best illustrated through FIGS. 1C, 1D and 1E) on same plane (such as 170) locations, wherein one button 100 can fit towards top (at 174t) and another button 100 can fit towards bottom (at 174b) of the finger 150.
[0050] In an embodiment, button 100 can be made of a material selected from any or a combination of the group consisting of glass, nylon 6 (with or without glass filled), and nylon 6,6 (with or without glass filled).
[0051] FIGS. 1C and 1D illustrate exemplary side view and perspective views of a MFS 100 in a finger assembly 150 (alternatively, finger) at two locations, one towards the top part (or well/groove 174t) and the other towards the bottom part (or well/groove 174b) of the finger assembly 150 in accordance to an embodiment of the present disclosure.
[0052] In an aspect, MFS 100 can serve as spacer between adjacent fingers 150 (illustrated in FIGS. 1C, 1D among others) of switchgear assembly 500 (illustrated in FIG. 5A), wherein height of the separator 130 (of the MFS) can be equal to desired separation between the fingers 150, wherein the fitment 110 of the MFS can snap fit into one or more wells (174t or 174b, generally 174) of the fingers 150.
[0053] FIG. 1E illustrates exemplary exploded view of MSPs 100 in relation to a finger assembly 150 in accordance to an embodiment of the present disclosure.
[0054] FIGS. 2A and 2B illustrate exemplary front and side views of part of a multiple finger contact assembly 200 with modular finger separator 100 at two locations, one towards the top part (or well 174t) and another towards the bottom part (or well 174b) of the finger assembly 150 in accordance to an embodiment of the present disclosure.
[0055] Further, FIG. 2C illustrates exemplary side view of pole assembly 230 of a multiple finger contact assembly 200 in accordance to an embodiment of the present disclosure. As illustrated, arcing Contact 152 can be present on finger 150 that includes a fulcrum pin 172 for ease of movement of the finger 150 inside pole cage 230 (of metal), which is supported on bottom terminal 270. Further, the finger 150 can be readily constrained in its movement by presence of a spring 236 along with spring holder 234. Additionally, pole connector 232 can be utilized for securing the pole cage 230 to desired part of circuit breaker or the like.
[0056] As would be appreciated, exemplary perspective view 250 of a multiple finger contact assembly 200 is illustrated by FIG. 2D, in accordance to an embodiment of the present disclosure.
[0057] FIGS. 3A, 3B and 3C illustrate exemplary front, bottom perspective and top perspective views of MFS 100 housed in an alternate fashion (one towards top side 174t of finger 150 at one side/plane and other towards bottom side 174b of the finger 150 on another side/plane) in a finger assembly 150 in accordance to an embodiment of the present disclosure.
[0058] In an alternate aspect, two quantity of button 100 can fit at both sides of a finger 150 (as best illustrated through FIGS. 3A, 3B and 3C) in an alternate fashion, wherein one button 100 can fit towards top (at 174t) of one plane and another button can fit towards bottom (at 174b) of opposite plane of the finger 150.
[0059] FIGS. 3D and 3E illustrate exemplary front and side views of part of a multiple finger contact assembly 200 with MSF 100 in an alternate fashion in fingers 150 in accordance to an embodiment of the present disclosure.
[0060] FIG. 4A illustrates exemplary perspective view 250 while FIG. 4B illustrates exemplary side view of a multiple finger contact assembly 200 with MSF 100 in alternate fashion in a finger assembly 150 in accordance to an embodiment of the present disclosure.
[0061] FIGS. 4C illustrates exemplary perspective view 250 while FIGS. 4D and 4E illustrate side views of a multiple finger contact assembly 200 with MFS 100 only towards top part 174t of finger assembly 150 as the sliding torque is mainly at contact button part or at the upper part of the finger assembly 150 in accordance to an embodiment of the present disclosure.
[0062] FIG. 5A illustrates exemplary perspective view of a complete breaker assembly 500 in accordance to an embodiment of the present disclosure. In an aspect, the present disclosure provides a switchgear assembly (or a complete breaker assembly 500) that can use one or more fingers 150 that can, in turn, include at least one modular finger separator (MFS) 100 that can be shaped as a button configured with a fitment 110 that can be attached to a separator 130, wherein the separator 130 can be a solid circular disc and the fitment 110 can be a solid cylinder substantially along geometrical central axis of the separator 130, wherein diameter of the fitment 110 can be less than diameter of the separator 130, wherein the MFS 100 can serve as spacer between adjacent fingers 150 of the one or more fingers 150 of switchgear assembly 500 with height of the separator 130 equal to desired separation between the adjacent fingers 150.
[0063] In an aspect, fitment 110 of MFS 100 can snap fit individually into at least one well 174 of one or more fingers 150. These can be any other fitting arrangement, as would be evident to a person having knowledge in the relevant art, such as, but not limited to, tolerance fit, transition fit, clearance fit, slide lock and the like without deviating from the scope of the present disclosure.
[0064] FIGS. 5B and 5C illustrate exemplary side cross sectional and perspective cross sectional views, 530 and 550 respectively, of a part of a complete breaker assembly 500 with MSP 100 in accordance to an embodiment of the present disclosure.
[0065] In an aspect, MFS 100 being a circular button shaped modular finger separator (or finger spacer) can be of any insulating material so as to separates multiple fingers electrically in a pole or in single phase in order to decrease the total repulsion force. Further, ease of snap fit arrangement between MFS 100 and a finger 150, as shown in the instant figure, ensures relevancy for a common user.
[0066] In an aspect, MFS can take any shape even other than circular button shape of the present disclosure, as any shapes such as, for example but need not necessarily, cube, rectangular, oval, triangular and the like as primary role of the MFS would only be to separate adjacent conductors (i.e. fingers) without interfering with any crucial part or whole of circuit breaker or even working thereof. Interestingly, preference had been given to a circular button (i.e. disc like separator), in context of the instant disclosure, in view of a circle taking minimum surface area out of any other geometrical shape, which serves as a highly beneficial arrangement from economic point of view, among others.
[0067] FIG. 6 illustrates exemplary cross section view 600 of a complete breaker assembly 500 in accordance to an embodiment of the present disclosure. As illustrated, main sections of the breaker assembly 500 include a mechanism 610 that encloses working mechanism of setup, and arc chute 630. In addition, top terminal 650 and bottom terminal 670 are in proximity of finger(s) 150 that can include one or more MFS 100.
[0068] In an implementation, MFS 100 can be used solely or in combination with one or more other finger separator(s), as would be evident to a person having knowledge in the pertinent art, for a multiple conductor contact assembly with metal pole case. Further, it can be used in multiple numbers either on/near top part or on/near bottom part of finger(s) or at any one place, either on one or both side(s) of the finger, as per requirement.
[0069] In a preferred aspect, MFS 100 can be used only at/towards the top part of finger 150 as the sliding torque is substantial at the contact button part or towards/at top (or upper part) of the finger 150. Notably, MFS 100 can separate two consecutive conductors (i.e. fingers) while the distance between the conductors can be equal to height (or thickness) of separator 130 of the button shaped MFS 100 without role, herein, of its fitment 110 part. Hence, height (or thickness) of the separator 130 of the button shaped MFS 100 can be varied, except the fitment 110 part, as per the required distance between the two consecutive conductors or fingers in a multiple conductor or finger contact assembly. This way, it supports structurally, both parts (i.e. the top and the bottom) of the conductors and thus collectively supports all conductors (or fingers) in the multiple conductor contact assembly, whereby it supports the conductors against the tilting and sliding torque and enhances the dynamic stability of the conductors or fingers extensively. The same way it supports structurally the side most fingers through which maximum current passes and enhances the dynamic stability of conductors. Hence the invention improves the Icw, thermal and fault clearing or breaking performance of circuit breaker by reducing the effect of the electromagnetic tilting and sliding torque by supporting structurally the conductors and by not allowing the conductor to move, tilt or slide. Thus improving the dynamic stability of the multiple conductors or movable multiple fingers in the multiple conductor of finger contact assembly in a pole case or pole cage.
[0070] Thus, the present disclosure provides a modular finger separator that reduces the number of parts and their manufacturing and assembly costs, and increases efficiency, while resulting in an overall reduction in operating expenses, among other benefits, for a multiple conductor contact assembly. The invention is mainly a modular component and can be assembled, replaced easily. As this is a fit to assembly component, the design specification and dimensions can be varied easily and inexpensively and thus giving the desired iteration or update for finger separation distance, finger profiles for a multiple conductor or finger contact assembly with metal or insulating pole case easily and inexpensively. The invention can be used solely as a finger spacer or separator or can be used along with other finger separator as an addition support or finger separation guide for metal pole case assembly.
[0071] 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
[0072] The present disclosure provides a simple, compact and economical finger separator that obviates shortcomings encountered with conventional finger separators for switchgears.
[0073] The present disclosure provides a modular finger separator that ensures desired current sharing among fingers in order to obviate repulsive action there between.
[0074] The present disclosure provides provide substantial dynamic stability against tilting and sliding torques acting on finger(s) by presence of modular finger separator(s).
[0075] The present disclosure provides a modular design of finger separators in order to avoid losses from temperature rise, fault current breaking among other benefits.