TITLE OF INVENTION
POWER METER
TECHNICAL FIELD
[0001] The invention relates to a power meter configured to measure electric
power.
BACKGROUND ART
[0002] Conventionally, a multi-circuit watt-hour meter has been provided,
which is capable of measuring, in a respective plurality of circuits, the
amounts of electric power individually (for example, see JP2005-55404A).
This multi-circuit watt-hour meter includes a voltage-measuring circuit, a
plurality of current-measuring circuits, and a power amount arithmetic
processing circuit. The voltage-measuring circuit is configured to measure
a common voltage applied to each of the plurality of circuits. Each of the
plurality of current-measuring circuits is configured to measure a current
flowing through a measuring point in each of the plurality of circuits, based
on an output of a current transformer that is coupled to the measuring point.
The power amount arithmetic processing circuit is configured to calculate
the amount of electric power in each of the plurality of circuits, based on the
voltage measured by the voltage-measuring circuit and the current
measured by each of the plurality of current-measuring circuit. Those
circuits are mounted on a circuit substrate, and the circuit substrate is
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housed in a box-shaped housing.
[0003] In this multi-circuit watt-hour meter, plural connectors are arranged
side by side on one lateral surface of the housing, and are electrically
connected to the respective current-measuring circuits. Connectors, which
are connected to respective current transformers, are respectively connected
to the corresponding plural connectors arranged on the housing side, and
accordingly, it is possible to measure the current flowing through each of the
plurality of circuits.
[0004] However, in the above-mentioned multi-circuit watt-hour meter, the
plural connectors are merely arranged side by side. Therefore, it is hard for
a worker or a maintenance inspector to determine a corresponding connector
that is a connection destination, and much time is required for a connecting
work.
SUMMARY OF THE INVENTION
[0005] The present invention has been made in the light of the
above-mentioned problem, and it is an object thereof to provide a power
meter, which can facilitate determining of a destination of connection with a
current transformer configured to detect a current that is a target to be
measured.
[0006] A power meter according to the present invention includes a plurality
of current-measuring parts, a power arithmetic part and a main body. The
plurality of current-measuring parts are configured to receive electric signals
from a respective plurality of current transformers, and measure currents
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flowing through a plurality of circuits to which the respective plurality of
current transformers are attached. The power arithmetic part is configured
to calculate power consumption with measurement results of the plurality of
current-measuring parts. At least the plurality of current-measuring parts
and the power arithmetic part are housed in the main body. Each of the
respective plurality of current-measuring parts includes a plurality of
connecting parts to which at least two current transformers having different
measuring ranges are respectively connected. A current transformer, which
is selected from the at least two current transformers, according to a circuit
current that is a target to be measured is connected to a corresponding
connecting part, among the plurality of connecting parts. In the power
meter, when the plurality of connecting parts are defined as one connecting
group, a plurality of connecting groups are arranged at the main body so as
to be divided into plural sets, each of which includes a prescribed number of
connecting groups.
[0007] According to this invention, the plurality of connecting groups are
arranged so as to be divided into the plural sets, each of which includes the
prescribed number of connecting groups. Accordingly, a worker or a
maintenance inspector can easily determine a connection destination when
connecting a current transformer, and therefore, the workability can be
improved.
[0008] In one embodiment, preferably, the plurality of connecting groups are
arranged in a plurality of recesses that are provided in the main body so that
the plurality of recesses respectively correspond to the plural sets, each of
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which includes the prescribed number of connecting groups.
[0009] According to this embodiment, the plurality of connecting groups are
arranged in the plurality of recesses so that the plurality of recesses
respectively correspond to the plural sets, each of which includes the
prescribed number of connecting groups. Accordingly, the worker or the
maintenance inspector can easily determine the connection destination when
connecting the current transformer, and therefore, the workability can be
improved.
[0010] In one embodiment, preferably, the plurality of connecting groups are
arranged through a plurality of partitioning walls that are provided at the
main body so that the plurality of partitioning walls respectively correspond
to the plural sets, each of which includes the prescribed number of
connecting groups.
[0011] According to this embodiment, the plurality of connecting groups are
arranged through the plurality of partitioning walls so that the plurality of
partitioning walls respectively correspond to the plural sets, each of which
includes the prescribed number of connecting groups. Accordingly, the
worker or the maintenance inspector can easily determine the connection
destination when connecting the current transformer, and therefore, the
workability can be improved.
[0012] In one embodiment, preferably, the power meter further includes an
identification part for identifying each of the plurality of connecting groups
that are divided into the plural sets, each of which includes the prescribed
number of connecting groups.
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[0013] According to this embodiment, through providing the identification
part, the worker or the maintenance inspector can easily determine a
connecting group of the connection destination when connecting the current
transformer, and therefore, the workability can be more improved.
[0014] In one embodiment, preferably, each of the plurality of connecting
groups includes a connector as a part of the plurality of connecting parts.
Any one of the connector and a current transformer side’s connector, which is
provided from a side of a corresponding current transformer to be connected
to the connector, is preferably provided with an operation part for releasing a
connection state of the connector and the current transformer side’s
connector. The power meter preferably further includes a displaying part,
as the identification part, that is provided near the operation part.
[0015] According to this embodiment, through providing the displaying part,
as the identification part, near the operation part, the worker or the
maintenance inspector can easily determine the connecting group of the
connection destination when connecting the current transformer, and
therefore, the workability can be more improved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Preferred embodiments of the present invention will now be
described in further details. Other features and advantages of the present
invention will become better understood with regard to the following detailed
description and accompanying drawings where:
Fig. 1 is a front view of one example of a power meter according to an
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embodiment;
Fig. 2 is a perspective view illustrating the whole of one example of
the power meter, when viewed from an oblique upper side, according to the
embodiment;
Fig. 3 is a perspective view illustrating the whole of one example of
the power meter, when viewed from an oblique lower side, according to the
embodiment;
Fig. 4 is a back view of one example of the power meter according to
the embodiment;
Fig. 5 is a circuit configuration drawing, in which part is omitted,
illustrating one example of the power meter according to the embodiment;
and
Fig. 6(a) is an enlarged view illustrating a main part of another
example of the power meter according to the embodiment, and Fig. 6(b) is a
schematic drawing illustrating a current transformer side’s connector that is
connected to a connector of the another example of the power meter.
EMBODIMENT FOR CARRYING OUT THE INVENTION
[0017] As shown in Figs. 1 to 4, a power meter according to the present
embodiment includes a single main unit 1 and a plurality of extension units
2 (two extension units in the present embodiment). In the following
descriptions, unless otherwise specified, a vertical direction and a lateral
direction are defined based on directions shown in Fig. 1. Further, the front
side in a direction perpendicular to a paper surface of Fig. 1 is defined as a
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front surface side, and the rear side in the direction is defined as a back
surface side, and the power meter will be described using such definitions.
[0018] The main unit 1 includes a unit main body (main body) 10. The unit
main body 10 is composed of: a body 11 that is formed of resin into a
rectangular box shape, of which a front surface is opened; and a cover 12 that
is formed of resin into a rectangular box shape, of which a back surface is
opened.
[0019] The body 11 is provided, on each of upper and lower side surfaces
thereof, with a plurality of projections 11A (three projections on each surface
in the present embodiment) that are arranged along the lateral direction.
Further, on the lower side surface, the body 11 is provided, in a left side
portion near a back surface thereof, with an opening part 11B that is formed
into a rectangular shape extending in the lateral direction. A plurality of
wire insertion holes 9b of a plurality of screw terminals 9 (four screw
terminals in the present embodiment), which is housed in the unit main body
10, are arranged along the lateral direction so as to face the opening part 11B.
Any of power supply lines (not shown) from the outside or an earth line (not
shown) may be connected to those screw terminals 9. The body 11 is further
provided, in a rear surface (back surface) thereof, with a groove 11E for
attaching to an IEC rail (not shown). Further, two operation rods 6 and 6,
which are operated when the main unit 1 is removed from the IEC rail, are
attached on the lower side of the groove 11E so as to be supported movably in
the vertical direction. Further, the body 11 is provided with grooves 11D in
both ends of a right side surface in the vertical direction, respectively.
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Coupling pieces 21B, described later, provided on the side of an extension
unit 2 are engaged with the grooves 11D. Because each operation rod 6 has
well-known configuration, the detailed descriptions thereof are omitted here.
[0020] The cover 12 is provided at a central part of a front surface thereof
with a projecting base part 13 integrally that is formed into a rectangular
shape and projects forward. The projecting base part 13 is provided, in a
left side portion on a front surface thereof, with a slot 13A that extends in the
vertical direction, to which an SD memory card (not shown) is freely inserted.
On the lower side of the slot 13A, a display portion 5 is provided for
displaying a state of accessing to the SD memory card. Further, on the
right side of the slot 13A, a cable connecting portion 8 and plural dip
switches 7 are provided in the lateral direction. To the cable connecting
portion 8, a connecting cable (not shown) is detachably connected for
connecting a display unit (not shown) and the cable connecting portion. The
plural dip switches 7 are provided for setting an address of the main unit 1.
The projecting base part 13 is provided at a right side portion on the front
surface thereof with a plurality of display portions 5 (four display portions in
the present embodiment), which are arranged along the vertical direction,
for displaying on/off of a power source or an operation status of a device.
[0021] The cover 12 is provided, in a portion thereof above the projecting
base part 13, with a plurality of recesses 12A (two recesses in the present
embodiment) that are arranged along the lateral direction. In each recess
12A, a plurality of connectors 3 (three connectors in the present embodiment)
and a plurality of screw terminals 4 (six screw terminals in the present
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embodiment) are stored. In a state where the connectors 3 and the screw
terminals 4 are stored in each recess 12A, connection faces (functional faces)
of the connectors 3 and screws 4a of the screw terminals 4 are exposed
through a rectangular-shaped opening part 12E formed on the side of the
front surface of each recess 12A. Further, in the state, wire insertion holes
4b of the screw terminals 4 are exposed through a rectangular-shaped
opening part 12D formed in an upper side surface of each recess 12A.
[0022] The cover 12 is provided, in a portion thereof below the projecting
base part 13, with a recess 12A and an opening part 12B that are arranged
along the lateral direction. In the recess 12A, a plurality of connectors 3
(three connectors in the present embodiment) and a plurality of screw
terminals 4 (six screw terminals in the present embodiment) are stored.
The opening part 12B is formed into a rectangular shape for exposing screws
9a of the screw terminal 9. In a state where the connectors 3 and the screw
terminals 4 are stored in the recess 12A, connection faces (functional faces)
of the connectors 3 and screws 4a of the screw terminals 4 are exposed
through a rectangular-shaped opening part 12E formed on the side of the
front surface of the recess 12A. Further, in the state, wire insertion holes
4b of the screw terminals 4 are exposed through a rectangular-shaped
opening part 12D formed in a lower side surface of the recess 12A. The
cover 12 is further provided, in each of upper and lower side surfaces thereof,
with a plurality of holes 12C (three holes in each surface in the present
embodiment) that are arranged along the lateral direction, with which the
respective projections 11A on the side of the body 11 are engaged. The cover
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12 is attached to the body 11 by engaging each projection 11A with a
corresponding hole 12C.
[0023] Each extension unit 2 includes a unit main body (main body) 20.
The unit main body 20 is composed of: a body 21 that is formed of resin into a
rectangular box shape, of which a front surface is opened; and a cover 22 that
is formed of resin into a rectangular box shape, of which a back surface is
opened.
[0024] The body 21 is provided, on each of upper and lower side surfaces
thereof, with a plurality of projections 21A (two projections on each surface
in the present embodiment) that are arranged along the lateral direction.
Further, on each of the upper and lower side surfaces, the body 21 is provided,
in a left side portion near a back surface thereof, with the coupling piece 21B
that is freely elastically bent in the vertical direction. The body 21 is
further provided in a right side surface thereof with grooves 21D, with which
the respective coupling pieces 21B are engaged. The grooves 21D are
disposed at both ends of the right side surface in the vertical direction. The
body 21 is further provided, in a rear surface (back surface) thereof, with a
groove 21E for attaching to an IEC rail (not shown). Further, an operation
rod 6, which is operated when the extension unit 2 is removed from the IEC
rail, is attached on the lower side of the groove 21E so as to be supported
movably in the vertical direction.
[0025] The cover 22 is provided at a central part of a front surface thereof
with a projecting base part 23 integrally that is formed into a rectangular
shape and projects forward. The cover 22 is provided, in a portion thereof
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above the projecting base part 23, with a plurality of recesses 22A (two
recesses in the present embodiment) that are arranged along the lateral
direction. In each recess 22A, a plurality of connectors 3 (three connectors
in the present embodiment) and a plurality of screw terminals 4 (six screw
terminals in the present embodiment) are stored. In a state where the
connectors 3 and the screw terminals 4 are stored in the recesses 22A,
connection faces (functional faces) of the connectors 3 and screws 4a of the
screw terminals 4 are exposed through rectangular-shaped opening parts
22D formed on the side of the front surfaces of the recesses 22A. Further, in
the state, wire insertion holes 4b of the screw terminals 4 are exposed
through rectangular-shaped opening parts 22B formed in upper side surfaces
of the recesses 22A.
[0026] The cover 22 is provided, in a portion thereof below the projecting
base part 23, with a recess 22A in which a plurality of connectors 3 (three
connectors in the present embodiment) and a plurality of screw terminals 4
(six screw terminals in the present embodiment) are stored. In a state
where the connectors 3 and the screw terminals 4 are stored in the recess
22A, connection faces (functional faces) of the connectors 3 and screws 4a of
the screw terminals 4 are exposed through a rectangular-shaped opening
part 22D formed on the side of the front surface of the recess 22A. Further,
in the state, wire insertion holes 4b of the screw terminals 4 are exposed
through a rectangular-shaped opening part 22B formed in a lower side
surface of the recess 22A. The cover 22 is further provided, in each of upper
and lower side surfaces thereof, with a plurality of holes 22C (two holes in
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each surface in the present embodiment) that are arranged along the lateral
direction, with which the respective projections 21A on the side of the body
21 are engaged. The cover 22 is attached to the body 21 by engaging each
projection 21A with a corresponding hole 22C.
[0027] Here, the procedure for coupling an extension unit 2 is described.
When a new extension unit 2 is made to be close, from the right side, to the
main unit 1 or an another extension unit 2 already added, a projection 21C
that is provided at an end of each coupling piece 21B is inserted into a
corresponding groove 11D or groove 21D. Then, when each projection 21C
is engaged with an opening edge of the corresponding groove 11D or groove
21D, the new extension unit 2 is coupled to the main unit 1 or the another
extension unit 2 (see Fig. 4). In a state where coupling of the extension unit
2 to the main unit 1 is completed, the groove 11E and groove 21E constitute a
single coupled groove, as shown in Fig. 4.
[0028] On the other hand, in a case where the extension unit 2 is removed,
when both coupling pieces 21B and 21B are bent in a direction where they
approach each other (that is, the vertical direction), the engaging state of
each projection 21C with the corresponding groove 11D or groove 21D is
released. While this state is kept, the extension unit 2 is moved to the right
side (a direction where the extension unit 2 is separated from the main unit 1
or the another extension unit 2), and accordingly, the removal of the
extension unit 2 is completed.
[0029] Further, respective connection connectors (not shown) for providing
power supply and transmitting electric signals are provided on a right side
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surface of the main unit 1, a left side surface of the extension unit 2 disposed
in the right end, and both of right and left side surfaces of the extension unit
2 disposed in the middle. In a state where coupling the plurality of
extension units 2 to the main unit 1 is completed, the power supply is
provided from the main unit 1 to each extension unit 2, and further the
electric signals (such as arithmetic results) are transmitted from each
extension unit 2 to the main unit 1.
[0030] Fig. 5 is a circuit configuration drawing illustrating a main part of
the main unit 1 or each extension unit 2. Each of the main unit 1 and the
extension units 2 actually includes a plurality of current-measuring parts 14.
However, because the plurality of current-measuring parts 14 have the same
configurations, only one current-measuring part 14 is shown in the drawing
and the remaining parts are omitted.
[0031] Each of the main unit 1 and the extension units 2 includes: the
plurality of current-measuring parts 14, each of which is configured to
measure a current flowing through a circuit to which a current transformer
17A or 17B is attached; a voltage-measuring parts 16 configured to measure
a voltage applied in the above-mentioned circuit; and a power arithmetic
part 15 configured to calculate power consumption in the above-mentioned
circuit. Each current-measuring part 14 includes: a series circuit composed
of a load resistor 141 (for example, 2.0Ω) and a shunt resistor 142 (for
example, 1mΩ); and an adder circuit 143. One end of the load resistor 141
(an opposite side of the load resistor 141 from a point of connecting with the
shunt resistor 142) is connected to an input terminal of the adder circuit 143.
14
An other end of the shunt resistor 142 (an opposite side of the shunt resistor
142 from a point of connecting with the load resistor 141) is connected to
ground GND.
[0032] The one end of the load resistor 141 and the other end of the shunt
resistor 142 are connected to the above-mentioned connector 3. Both ends
of the shunt resistor 142 are respectively connected to the wire insertion
holes 4b of the screw terminal 4. The current transformer 17A for detecting
a relatively low current is connected to the connector 3, and the current
transformer 17B for detecting a relatively high current is connected to the
screw terminal 4. That is, the respective current transformers 17A and 17B
having different measuring ranges are connected to the connector 3 and
screw terminal 4. The power arithmetic part 15 is configured to calculate
power consumption based on a current value that is measured by each
current-measuring part 14 and a voltage value that is measured by the
voltage-measuring parts 16. For example, an arithmetic result obtained by
the extension unit 2 is transmitted to the main unit 1 through the
above-mentioned connection connector.
[0033] Here, in the present embodiment, a plurality of connecting parts are
configured by connectors 3 and screw terminals 4, and further, one
connecting group is configured by one connector 3 and two screw terminals 4.
In each recess 12A of the cover 12 or each recess 22A of the cover 22, three
connecting groups (a prescribed number of connecting groups) are disposed
(see Fig. 1). Accordingly, a worker or a maintenance inspector can easily
determine a connection destination when connecting the current transformer
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17A or 17B, and therefore, the workability can be improved.
[0034] Fig. 6(a) is an enlarged view illustrating a main part of another
example of the power meter according to the present embodiment. In this
example, the plurality of connecting groups are arranged through a plurality
of partitioning walls 12F or 22F that are provided at the unit main body 10
or 20 so that the plurality of partitioning walls respectively correspond to
plural sets, each of which includes the prescribed number of connecting
groups. Because components other than this are similar to those of the
above-mentioned power meter, such components are assigned with same
reference numerals, and explanations thereof will be omitted.
[0035] A power meter according to this example includes a main unit 1 and
an extension unit 2. The main unit 1 includes a unit main body (main body)
10. The unit main body 10 is composed of a body (not shown) and a cover 12.
The extension unit 2 includes a unit main body (main body) 20. The unit
main body 20 is composed of a body (not shown) and a cover 22. The
plurality of partitioning walls 12F and 22F are respectively provided, at the
cover 12 of the main unit 1 and the cover 22 of the extension unit 2, so that
each partitioning wall surrounds a corresponding set that includes the
prescribed number of connecting groups (three connecting groups in this
example) (each connecting group is configured by one connector 3 and two
screw terminals 4 in this example). Because Fig. 6(a) is the enlarged view
illustrating the main part of the power meter, only one partitioning wall 12F
(or 22F) is shown in the drawing. However, the plurality of partitioning
walls 12F (or 22F) are actually provided, and the prescribed number of
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connecting groups are disposed so as to be surrounded by each partitioning
wall 12F (or 22F). Accordingly, a worker or a maintenance inspector can
easily determine a connection destination when connecting the current
transformer 17A or 17B, and therefore, the workability can be improved.
[0036] As shown in Fig. 6(a), in this example, a respective plurality of labels
(numbers 1 to 3 in Fig. 6(a)) are further provided for the plurality of
connecting groups. It is possible to identify each connecting group through
those labels. Accordingly, a worker or a maintenance inspector can easily
determine each connecting group when connecting the current transformer
17A or 17B, and therefore, the workability can be improved. Here, such a
label, which corresponds to an identification part, is not limited to a numeral,
and may be a character or the like. Alternatively, the plurality of
connecting groups may be distinguished by color, or identified by providing a
partitioning wall between the connecting groups.
[0037] Fig. 6(b) is a schematic drawing illustrating a connector 18 on the
side of the current transformer 17A, which is inserted in and connected to a
connector 3 of the power meter according to the present embodiment. This
connector 18 is a synthetic resin molded product for example, and is
integrally provided with an elastic piece 18d that is movably displaced in the
vertical direction. The elastic piece 18d is provided at an end thereof with a
projection 18b that is engaged with a groove (not shown) on the side of a
corresponding connector 3 when the connector 18 is inserted into the
corresponding connector 3. Further, the elastic piece 18d is provided at a
back end thereof with a projection 18a that is operated when the connector
17
18 inserted in and connected to the connector 3 is removed. When the
connector 18 inserted in and connected to the connector 3 is removed, the
engaging state of the projection 18b with the groove is released by pushing
the projection 18a, and the connector 18 can be removed by pulling out the
connector 18 while this state is kept. In addition, a displaying part 18c (a
number 1 in this example) is provided near the elastic piece 18d.
Accordingly, a worker or a maintenance inspector can easily determine a
connecting group of a connection destination when connecting the current
transformer 17A, and therefore, the workability can be improved. In the
present embodiment, the projection 18a provided at the elastic piece 18d
corresponds to an operation part.
[0038] In the present embodiment, one main unit 1 and two extension units
2 constitute the power meter. However, the configuration of the power
meter is not limited to the present embodiment. Only the main unit 1 may
constitute the power meter. Alternatively, the main unit 1, and one or three
or more extension units 2 added to the main unit 1 may constitute the power
meter. In the present embodiment, the power meter was described, using a
case of a three-phase four-wire system, as an example of a distribution
system. In this case, because currents through a U phase, a V phase and a
W phase are required to be detected individually, the prescribed number is
set to 3. However, for example, when a single-phase three-wire system is
used as the distribution system, only currents through two phases are
required to be detected, and accordingly, the prescribed number may be set to
2. That is, the prescribed number is not limited to the present embodiment,
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and may be arbitrarily set. The plurality of connecting groups are arranged
so as to be divided into the plural sets, each of which includes the prescribed
number of connecting groups, and accordingly, a worker or a maintenance
inspector can easily determine a connection destination when connecting a
current transformer.
[0039] Further, in the present embodiment, the displaying part 18c of the
connector 18 was described using a case of a numeral, as an example.
However, the displaying part is not limited to the present embodiment, and
may be configured with color or character. Further, in the present
embodiment, the displaying part is provided on the connector side of the
current transformer. However, the displaying part may be provided on the
connector side of the power meter.
[0040] Although the present invention has been described with reference to
certain preferred embodiments, numerous modifications and variations can
be made by those skilled in the art without departing from the true spirit
and scope of this invention, namely claims.
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CLAIMS
1. A power meter, comprising:
a plurality of current-measuring parts configured to receive electric
signals from a respective plurality of current transformers, and measure
currents flowing through a plurality of circuits to which the respective
plurality of current transformers are attached;
a power arithmetic part configured to calculate power consumption
with measurement results of the plurality of current-measuring parts; and
a main body in which at least the plurality of current-measuring
parts and the power arithmetic part are housed,
wherein each of the plurality of current-measuring parts includes a
plurality of connecting parts to which at least two current transformers
having different measuring ranges are respectively connected,
wherein a current transformer, which is selected from the at least
two current transformers, according to a circuit current that is a target to be
measured is connected to a corresponding connecting part, among the
plurality of connecting parts, and
wherein when the plurality of connecting parts are defined as one
connecting group, a plurality of connecting groups are arranged at the main
body so as to be divided into plural sets, each of which including a prescribed
number of connecting groups.
2. The power meter according to claim 1, wherein the plurality of
connecting groups are arranged in a plurality of recesses that are provided in
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the main body so that the plurality of recesses respectively correspond to the
plural sets, each of which including the prescribed number of connecting
groups.
3. The power meter according to claim 1, wherein the plurality of
connecting groups are arranged through a plurality of partitioning walls that
are provided at the main body so that the plurality of partitioning walls
respectively correspond to the plural sets, each of which including the
prescribed number of connecting groups.
4. The power meter according to any one of claims 1 to 3, further
comprising an identification part for identifying each of the plurality of
connecting groups that are divided into the plural sets, each of which
including the prescribed number of connecting groups.
5. The power meter according to claim 4,
wherein each of the plurality of connecting groups includes a
connector as a part of the plurality of connecting parts,
wherein any one of the connector and a current transformer side’s
connector, which is provided from a side of a corresponding current
transformer to be connected to the connector, is provided with an operation
part for releasing a connection state of the connector and the current
transformer side’s connector, and
wherein the power meter further comprises a displaying part, as the
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identification part, that is provided near the operation part.
Dated this 21st day of August 2014