The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to implementing an improved loss of service continuity in the switchgear.
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] Conventionally, switchgears include a number of electrical
components such as busbar compartment 102, circuit breaker (CB) compartment 104, and cable connection (CC) compartment 102, as shown in FIG. 1. These compartments are very highly electrically charged or energized when the switchgear is in operating mode, there requires a time-to-time maintenance or breakdown maintenance of the switchgear. Loss of service continuity is referred to as ability to access or install the relevant compartment of the switchgear when the other compartments are live or energized, without shutting down the complete switchgear. The loss of continuity categories is divided into four categories LSC1, LSC2, LSCA1, LSC2A, and LSC2B.
[0004] Generally, the switchgear which includes LSC2A LSC category as
shown in FIG. 1. If the master circuit breaker (MCB) is off, then CB compartment 104 as well as CC Compartment 106 can be accessed, even if busbar is Live. The access to Circuit breaker compartment 104 and Cable connection compartment 106 can be taken by first opening a circuit breaker whose operating height is at 1300mm from ground level. After opening, disconnector earthing switch can be accessed, whose operating height is 1800mm. When, disconnector Switch is in earth position and circuit breaker is closed, both circuit breaker compartment 104 and cable connection compartment 106 are earthed, and the access can be taken, even if Busbar is live. With LSC2A in case one want to access the circuit breaker

compartment 104, one has to also earth the cable connection compartment 106
along.
[0005] There is, therefore, a need of an improver switchgear with
improved LSC category which allows accessing the circuit breaker compartment
104, keeping the busbar compartment 102 and cable connection compartment 106
live or energized.
OBJECTS OF THE PRESENT DISCLOSURE
[0006] Some of the objects of the present disclosure, which at least one
embodiment herein satisfies are as listed herein below.
[0007] It is an object of the present disclosure to provide a switchgear with
improved loss of service continuity performance.
[0008] It is an object of the present disclosure to provide a switchgear with
improved loss of service continuity performance without increasing height of the
switchgear.
[0009] It is an object of the present disclosure to provide a cost-effective
method of improving loss of service continuity performance of the switchgear.
[0010] It is an object of the present disclosure to provide a switchgear
which allows access to circuit breaker while keeping busbar and cable connection
live or energized.
SUMMARY
[0011] The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to implementing an improved loss of service continuity in the switchgear.
[0012] An aspect of the present disclosure pertains to a switchgear. The
switchgear includes a busbar compartment having a busbar, and a first earthing switch electrically configured with the busbar; a circuit breaker compartment having a circuit breaker, and a first switch electrically coupled with the busbar. The circuit breaker is electrically configured with the busbar through the first earthing switch and the first switch. A cable connection compartment having one

or more cables, and a second earthing switch electrically configured with the circuit breaker. The one or more cables are electrically configured with the circuit breaker through the second earthing switch facilitating access to the circuit breaker when the cable connection is energized.
[0013] 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
[0014] 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.
[0015] 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.
[0016] FIG. 1 illustrates an exemplary representation of conventional loss
of service continuity category used in the switchgear.
[0017] FIG. 2A illustrates an exemplary representation of loss of service
continuity category used in the switchgear, in accordance with an embodiment of
the invention.
[0018] FIG. 2B-C illustrates an exemplary representation of the
switchgear, in accordance with an embodiment of the invention.

DETAILED DESCRIPTION
[0019] 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.
[0020] 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.
[0021] The present disclosure relates to the field of switchgear. More
particularly the present disclosure relates to implementing an improved loss of service continuity in the switchgear.
[0022] An aspect of the present disclosure pertains to a switchgear. The
switchgear includes a busbar compartment having a busbar, and a first earthing switch electrically configured with the busbar; a circuit breaker compartment having a circuit breaker, and a first switch electrically coupled with the busbar. The circuit breaker is electrically configured with the busbar through the first earthing switch and the first switch. A cable connection compartment having one or more cables, and a second earthing switch electrically configured with the circuit breaker. The one or more cables are electrically configured with the circuit breaker through the second earthing switch facilitating access to the circuit breaker when the cable connection is energized.
[0023] In an embodiment, the first earthing switch can be disposed on a
bus side of the switchgear.
[0024] In an embodiment, the second earthing switch can be disposed on a
line side of the switchgear.

[0025] In an embodiment, the first switch can be configured to control the
electrical connection between the busbar compartment and the circuit breaker
compartment.
[0026] FIG. 2A illustrates an exemplary representation of loss of service
continuity category used in the switchgear, in accordance with an embodiment of
the invention.
[0027] FIG. 2B-C illustrates an exemplary representation of the
switchgear, in accordance with an embodiment of the invention.
[0028] As illustrated, a switchgear 200 can include a busbar compartment
202 having a first earthing switch 208. A circuit breaker compartment 204 having
a circuit breaker, and a first switch 212 can be electrically coupled with a busbar
in the busbar compartment 202. The circuit breaker can be electrically configured
with the busbar through the first earthing switch 208 and the first switch 212. A
cable connection compartment 206, having one or more cables, and a second
earthing switch 212 can be electrically configured with the circuit breaker 210 in
the circuit breaker compartment 204. The one or more cables of the cable
connection compartment 206 can be electrically configured with the circuit
breaker through the second earthing switch facilitating access to the circuit
breaker when the cable connection is energized.
[0029] In an embodiment, the first earthing switch 208 can be configured
to be switched between three positions. A first position "Sll" at which the first
earthing switch 208 can be couple to the busbar, at second position "S12" the first
earthing switch 208 can be kept isolated from ground terminal and the busbar, and
at a third position "S13" the first earthing switch 208 can be coupled to the ground
terminal. The first earthing switch 208 can be disposed on a bus side of the
switchgear 200, and the second earthing switch 212 can be disposed on a line side
of the switchgear 200.
[0030] In an embodiment, the second earthing switch 212 can be
configured to be switched between three positions. A first position "S21" at which
the second earthing switch 212 can be couple to the one or more cables, at a
second position "S22" the first earthing switch 212 can be kept isolated from a

ground terminal and the one or more cables of the cable connection compartment
206, and at a third position "S23" the second earthing switch 212 can be coupled
to the ground terminal. The first switch 210 can be configured to be switched
between an open position when the fist switch 210 is not coupled to the busbar,
and a closed position when the first switch 210 is couped to the busbar.
[0031] In an embodiment, when the first earthing switch 208, the second
earthing switch 212, and the first switch 210 are at the positions SI 1, S21, and
closed respectively, all the busbar, the circuit breaker, and the cable connection
can be energized or live with an input power. The first earthing switch 208 can be
switched to the S13 position when a person wants to access the both the circuit
breaker and the one or more cables in the cable connection compartment 206 only
keeping the busbar live or energized. In this configuration the one or more cables
in the cable connection compartment 206 and the circuit breaker can be
electrically shorted and can be grounded using the first earthing switch 208.
[0032] In an embodiment, the both the first earthing switch 208, the first
switch 210, and the second earthing switch 212 can be shifted to the positions
SI3, closed, and S23 respectively, when a person wants to access the circuit
breaker only while keeping the busbar and the one or more cables energized or
live. In this configuration the circuit breaker can be grounded through both the
first earthing switch 208 and the second earthing switch 212. In which way, the
person does not have to earth the one or more cables in the cable connection
compartment for accessing the circuit breaker. In this way the loss of service
continuity of the switch gear can be improved from LSC2A to LSC2B.
[0033] As illustrated in FIG 2B-C, the switch gear 200 can include three
compartments. It can also include an additional disconnector switch (also referred as second earthing switch 212, herein) in the cable connection compartment 206. a person can access the circuit breaker compartment 204 even if the busbar compartment 202 and master circuit breaker is live. To gain an access of the circuit breaker compartment 204, the person can open the circuit breaker compartment 204 whose operating height can be at 1300mm from ground level. After opening, the person can take access of both the disconnector or earthing

switches 208 and 212, whose operating height can be at 700mm & 1800mm. Now, both the earthing switches can be switched on the respective third Position and can close the circuit breaker compartment 204. Now Circuit breaker can be earthed, and the access can be taken, keeping the Busbar compartment 202 and Master circuit breaker live. The present disclosure pertains to a switchgear in which the loss of service continuity is improved from LSC2A to LSC2B without increasing any height of the switchgear.
[0034] 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, or 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.
[0035] 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
[0036] The proposed invention provides a switchgear with improved loss
of service continuity performance.
[0037] The proposed invention provides a switchgear with improved loss
of service continuity performance without increasing height of the switchgear.

[0038] The proposed invention provides a cost-effective method of
improving loss of service continuity performance of the switchgear.
[0039] The proposed invention provides a switchgear which allows access
to circuit breaker while keeping busbar and cable connection live or energized.

We Claim:

1. A switchgear comprising:
a busbar compartment having a busbar, and a first earthing switch electrically configured with the busbar;
a circuit breaker compartment having a circuit breaker, and a first switch electrically coupled with the busbar, wherein the circuit breaker is electrically configured with the busbar through the first earthing switch and the first switch; and
a cable connection compartment having one or more cables, and a second earthing switch electrically configured with the circuit breaker, wherein the one or more cables are electrically configured with the circuit breaker through the second earthing switch facilitating access to the circuit breaker when the cable connection is energized.
2. The switchgear as claimed in claim 1, wherein the first earthing switch is disposed on a bus side of the switchgear.
3. The switchgear as claimed in claim 1, wherein the second earthing switch is disposed on a line side of the switchgear.
4. The switchgear as claimed in claim 1, wherein the first switch is configured to control the electrical connection between the busbar compartment and the circuit breaker compartment.