JP2017215223A - Load testing device, and load system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a load testing device designed to permit installation in any one of plural directions.SOLUTION: A load testing device is equipped with a resisting part, a cooling part, a frame having a first area and a second area, of which the first area accommodates the cooling part and the second area accommodates the resisting part, and an operating part that can be attached to and detached from the frame and includes a resistance changeover switch for use in selecting one resistor for use in electric power supply for load testing out of plural resistors. Exhausting of cooling wind supplied from the cooling part to the resisting part takes place from the rear face of the frame. The operating part is fitted to either a front face, which is the first area of the frame and parallel to the rear face, or the first area of the frame, which is one of the top face, the bottom face and a side face parallel to the front face. When the operating part is fitted to the top face, intake of cooling wind is done through an opening in the front face, and when the operating part is fitted to the front face, intake of cooling wind is done through an opening in the top face of the first area.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a load test apparatus and the like.

  Conventionally, as in Patent Document 1, a dry load test apparatus for performing a load test of a generator has been proposed.

JP 2010-255752 A

  However, normally, the load test apparatus is installed in one direction, and it is not considered to install in a plurality of directions.

  Accordingly, an object of the present invention is to provide a load test apparatus or the like that is considered to be installed in a plurality of directions.

  The load test apparatus according to the present invention has a resistance portion provided with a plurality of resistor groups including resistors, a cooling portion having a cooling fan for cooling the resistor groups, a first region, and a second region, A frame containing a cooling part in the first area and a resistance part in the second area, and a frame that can be attached to and detached from the frame and that supplies power among a plurality of resistor groups in order to perform a load test. A load test device including an operation unit including a resistance changeover switch used for selection, wherein the load test device is installed in a state where the cooling unit and the resistance unit are arranged in a horizontal direction. It is possible to perform a load test in a state where the cooling unit and the resistance unit are arranged in the vertical direction, and the exhaust of the cooling air sent from the cooling unit to the resistance unit is The operation is performed from the rear, and the operation unit is the first area of the frame. It is attached to the front surface parallel to the rear surface, or is attached to either the upper surface, the lower surface, or the side surface that is the first region of the frame and is perpendicular to the front surface, and the operation unit is either the upper surface, the lower surface, or the side surface. When the operation unit is attached to the front surface, at least the upper surface opening, the lower surface, and the side surface opening of the first region are sucked. Cooling air is drawn using one.

The operation unit can be attached in a detachable state not only at one place but also at least two places (front and upper surfaces (or lower and side surfaces)).
For this reason, even if the load test device is installed so that the resistance portion and the cooling portion are arranged in the horizontal direction, or the load test device is installed so as to be arranged in the vertical direction, the operation can be easily performed. It becomes possible.

  Preferably, when performing a first load test, which is a load test of an air conditioning facility that cools a computer server, a load test device is installed so that the cooling unit and the resistance unit are arranged in a horizontal direction, Is supplied with power from a commercial power source, the side of the frame is attached to a server rack that holds the computer server, the operation unit is attached to the front of the frame, and includes at least one of an opening on the upper surface and an opening on the lower surface of the first region. Intake is performed using the opening on the front surface, and exhaust is performed horizontally from the rear surface of the frame.

  In the first load test, a load test apparatus is attached to a server rack in which a computer server is installed, a commercial power source for driving the computer server is used to supply power to the resistance portion of the load test apparatus, and the computer server The air conditioner in the room where the computer server is installed is operated under the situation where the amount of heat generated is the same as when the computer is driven, and it is confirmed whether the cooling capacity of the air conditioner is sufficient.

  At this time, since the load test equipment is installed in the server rack like the computer server, the air conditioner load test (first load test) should be performed in a state close to the environment in which the actual computer server is operated. Is possible.

  More preferably, the load test device is attached to the server rack so that a part of the first region protrudes from the server rack, and the terminal connection portion for connecting the cable with the commercial power source is the first region, It is arranged on the side closer to the front side than the position where it is attached to the server rack on the side of the frame.

  The terminal connection for cable connection with the commercial power supply is located closer to the front side than the position where it is attached to the server rack on the side of the frame, and is in a position protruding from the server rack. Even after attachment, the cable can be easily connected.

  More preferably, two or more U-shaped handles are provided on the front surface.

  More preferably, when performing a second load test, which is a load test of a power source to be tested including a generator or a battery, a load test device is installed such that the cooling unit is positioned below and the resistance unit is positioned above, The handle is used to provide a certain distance between the front surface and the installation surface on which the load test device is installed, the resistor group is supplied with power from the power source to be tested, and the operation unit is provided on the upper or lower surface of the frame. At least one of the opening on the upper surface and the opening on the lower surface of the first region and the opening on the front surface is used for intake, and exhaust is performed upward from the rear surface.

  Preferably, four or more casters are provided on the front surface, and when performing a second load test that is a load test of a power source to be tested including a generator or a battery, the cooling portion is at the bottom and the resistance portion is at the top. The load test equipment is installed so that it is placed, the casters are used to provide a certain distance between the front surface and the installation surface where the load test equipment is installed, and the resistors are powered by the power source under test. The operation unit is attached to the upper or lower surface of the frame, and intake is performed using at least one of the upper surface opening and the lower surface opening of the first region and the front surface opening, and exhaust is performed upward from the rear surface. .

The operation unit can be attached not only to the front surface but also to other surfaces (in this case, the upper surface, etc.). It is also possible to perform a load test (second load test).
At this time, it is possible to provide a gap for taking in the cooling air from the front surface constituting the bottom surface of the frame and the installation surface of the load test apparatus by the handle or the caster.

  More preferably, the cooling fan is attached to the first region in a detachable state, and the cooling fan is attached / detached at least with the operation unit removed from the upper surface and the lower surface.

The cooling fan of the cooling unit and the operation unit can be carried separately from the frame of the load test apparatus, and the cooling unit and the operation unit can be attached to the frame or the like at the site where the load test is performed.
In particular, the cooling fan of the cooling unit can be easily attached and detached with the operation unit removed from the frame (at least with the operation unit removed from the upper and lower surfaces of the frame).

  The load system according to the present invention includes two or more load test apparatuses and communication devices that perform wireless communication with the two or more load test apparatuses. Each of the load test apparatuses includes a resistor group including a resistor. A plurality of resistor units, a cooling unit having a cooling fan for cooling the resistor group, a first region and a second region, the cooling unit is accommodated in the first region, and the resistor unit is provided in the second region A frame to be accommodated, and an operation unit including a resistance changeover switch used for selecting a power supply among a plurality of resistor groups, which is detachable from the frame and performs a load test, and communication Each having a communication unit that performs wireless communication with the device, and each of the load test devices performs a load test in a state where the cooling unit and the resistance unit are arranged in a horizontal direction, and a cooling unit, Installed so that the resistance part is arranged vertically In each of the load test devices, the exhaust of the cooling air sent from the cooling unit to the resistance unit is performed from the rear surface of the frame and is operated in each of the load test devices. The part is the first region of the frame and is attached to the front surface parallel to the rear surface, or the first region of the frame and attached to any one of the upper surface, the lower surface and the side surface perpendicular to the front surface. In each of the devices, when the operation unit is attached to either the upper surface, the lower surface, or the side surface, cooling air is sucked in using at least the opening on the front surface. In the case where it is attached to the load test apparatus, cooling air is sucked using at least one of the upper surface opening, the lower surface and the side surface opening of the first region. Communication unit from the communication device, receives a signal relating to instructions for operating the switch of the operation unit.

  As described above, according to the present invention, it is possible to provide a load test apparatus and the like considering installation in a plurality of directions.

It is a load test device in this embodiment, and is a perspective view before a protective cover etc. are attached. It is a schematic diagram which shows the structure of a load test apparatus. It is a perspective view of an operation part. It is a perspective view of the load test apparatus before a protective cover etc. are attached for a 1st load test. It is a perspective view of the load test apparatus after a protective cover etc. were attached for the 1st load test. It is a perspective view of the load test apparatus in the state attached to the server rack. It is a perspective view of the load test apparatus before a protective cover etc. are attached for a 2nd load test. It is a perspective view of the load test apparatus after a protective cover etc. were attached for the 2nd load test. FIG. 9 is a perspective view of a load test apparatus after a protective cover or the like is attached for a second load test, in which a caster is attached instead of the handle of FIG. 8. It is a schematic diagram which shows the structure of a load system.

  Hereinafter, the present embodiment will be described with reference to the drawings. The dry load test apparatus 1 in the present embodiment includes a frame 10, a resistance unit 20, a cooling unit 30, a connection switching unit 40, and an installation member 50 (FIGS. 1 to 9).

In order to explain the direction, the direction in which the resistor Re of the resistor unit 20 extends is the x direction, perpendicular to the x direction, the direction in which the resistor unit 20 and the cooling unit 30 are arranged is the y direction, and the x direction is perpendicular to the y direction. The direction is described as the z direction.
In the first embodiment (first load test that is a load test of an air conditioning facility that cools a computer server, see FIGS. 1 to 6), the x direction and the y direction are horizontal directions, and the z direction is a vertical direction.
In the second embodiment (second load test that is a load test of a generator or a battery, see FIGS. 1 to 3 and FIGS. 7 to 9), the x direction and the z direction are horizontal directions, and the y direction is a vertical direction. Become.

The frame 10 forms a rectangular parallelepiped. One of the yz planes perpendicular to the x direction in the rectangular parallelepiped is a first side face 10a, the other is the second side face 10b, and one of the xy planes perpendicular to the z direction in the rectangular parallelepiped is taken. The upper surface 10c, the other is the lower surface 10d, one of the xz planes perpendicular to the y direction in the rectangular parallelepiped is the front surface 10e, the other is the rear surface 10f, the side close to the front surface 10e is the first region 11, and the side close to the rear surface 10f is the second. Region 12 is assumed.
In the first embodiment, the lower surface 10d is the bottom surface, and in the second embodiment, the front surface 10e is the bottom surface.

The frame 10 accommodates the cooling unit 30 in the first region 11 and the resistance unit 20 in the second region 12.
A first terminal connection portion 41, a second terminal connection portion 42, and a relay portion 45 are provided on the first side surface 10 a and the second side surface 10 b in the first region 11 of the frame 10.
In particular, the first terminal connection portion 41 and the second terminal connection portion 42 are provided on the side closer to the front surface 10e than a position where a rack mounting bracket 51 to be described later is attached.
The operation unit 47 is attached to the front surface 10e of the frame 10 or the upper surface 10c in the first region 11 of the frame 10 in a detachable state.

On the first side surface 10a, the second side surface 10b, the upper surface 10c, and the lower surface 10d in the second region 12 of the frame 10, a resistor Re constituting the resistor unit 20, a cable connected to a terminal of the resistor Re, and a short-circuit bar In addition, a cover 13 (a first side cover 13a, a second side cover 13b, an upper cover 13c, and a lower cover 13d) that protects the holding plate 21 that holds the resistor Re is provided.
The cover 13 is made of a conductive material such as iron or aluminum.

Further, at least the front surface 10e, the rear surface 10f, and the upper surface 10c and the lower surface 10d of the first region 11 are opened so that the cool air from the cooling unit 30 is applied to the resistance unit 20 and exhausted from the rear surface 10f.
In order to efficiently perform intake, it is desirable that the first side surface 10a and the second side surface 10b are provided with a region that opens in addition to the region where the member such as the first terminal connection portion 41 is attached.

  In the case of the first load test, the cooling fan of the cooling unit 30 is mainly used by using the opening of the upper surface 10c and the lower surface 10d of the first region 11 and the region of the opening of the front surface 10e where the operation unit 47 is not attached. And the cooling fan of the cooling unit 30 is exhausted using the opening of the rear surface 10f.

  In the case of the second load test, the cooling fan of the cooling unit 30 is mainly used by using the region where the operation unit 47 is not attached to the opening of the upper surface 10c and the lower surface 10d of the first region 11 and the opening of the front surface 10e. And the cooling fan of the cooling unit 30 is exhausted using the opening of the rear surface 10f.

Rack mounting brackets 51 are attached to the first side surface 10 a and the second side surface 10 b in the first region 11 of the frame 10, and the load test apparatus 1 is attached to the server rack 90 via the rack mounting bracket 51.
The server rack 90 normally holds a computer server, and holds the load test apparatus 1 instead of the computer server in the first load test.

In order to attach the load test apparatus 1 to the server rack 90, the width of the frame 10 (the distance between the first side surface 10 a and the second side surface 10 b) is shorter than the width of the server rack 90.
In particular, when the server rack 90 is a 19-inch rack, the width of the rack mounting bracket 51 attached to the first side surface 10a of the frame 10 and the rack mounting bracket 51 attached to the second side surface 10b of the frame 10 (the server rack 90 The width of the frame 10 and the like are set so that the distance between the holes to be attached to each other is 19 inches (about 480 mm).

The resistor unit 20 is a load test (first test) in which a plurality of resistor arrays in which a plurality of rod-shaped resistors Re parallel to the x direction are arranged at predetermined intervals in the z direction are arranged in a plurality of stages in the y direction. 1 load test, second load test).
In the first load test (first embodiment) of the air conditioning equipment that cools the computer server, the first terminal connection unit 41 is connected to the same commercial power source that supplies power to the computer server, and the resistor Re is the commercial power source. Receives power from the power supply.
In the second load test of the generator or battery (second embodiment), the first terminal connection unit 41 is connected to a test target power source (generator or battery), and the resistor Re supplies power from the test target power source. Receive.

  In the present embodiment, the resistor Re includes six resistor rows arranged in the z direction and arranged in six stages in the y direction. However, the number of resistors Re arranged in each resistor row and the number of stages where the resistor rows are stacked are not limited to this.

  In the resistor Re constituting the resistor unit 20, a plurality of adjacent resistors Re connected in series or in parallel is defined as one resistor group, which is a commercial power source (first embodiment) or a test target power source (first power source). The load test is performed while changing the number of resistor groups to which the voltage is applied from the second embodiment.

  The resistor unit 20 includes a first resistor group G1 to an eighth resistor group G8. However, the number of resistor groups G is not limited to the above-described configuration.

A terminal of the resistor Re is connected to a terminal of another resistor Re by a short-circuit bar, or is connected to the first terminal connection unit 41 or the relay unit 45 via a cable.
However, a cable connecting the first terminal connection unit 41 and the commercial power source in FIG. 6, a cable connecting the second terminal connection unit 42 and the commercial power source, a cable connecting the first terminal connection unit and the test target power source in FIG. Except for the cable connecting the second terminal connecting portion 42 and the commercial power supply, the short-circuit bar and the cable are not shown.

  A portion of the resistor Re that is not electrically connected to the terminal is held by the wall constituting the holding plate 21.

  It is preferable that a cap (not shown) made of an insulating member such as rubber is put on the portion of the resistor Re that is exposed from the wall constituting the holding plate 21.

  In order to efficiently perform the cooling by the cooling unit 30, the resistor array adjacent to the y direction is arranged at a position intermediate between the resistor Re constituting the resistor array and the resistor Re and the resistor Re adjacent to the z direction. The resistors Re of each resistor row are arranged so that the resistors Re are arranged.

The cooling unit 30 includes a cooling fan that cools the resistor Re of the resistor unit 20 using air taken from outside.
The cooling fan is driven by a commercial power supply (load test apparatus driving power supply) (see FIG. 2).

The cooling fan is preferably attached to the first region 11 of the frame 10 in a detachable state such as screwing.
In this case, it becomes possible to carry the cooling fan of the cooling unit 30 and the operation unit 47 separately from the frame 10 of the load test apparatus 1 and the like, and the cooling unit 30 and the operation unit 47 at the site where the load test is performed. Can be attached to the frame 10 or the like.
In particular, the cooling fan of the cooling unit 30 can be easily attached and detached with the operation unit 47 removed from the frame 10 (at least with the operation unit 47 removed from the upper surface 10c and the lower surface 10d of the frame 10).

The load test apparatus 1 performs a load test (first embodiment) in a state where the cooling unit 30 and the resistance unit 20 are installed in a horizontal direction, and the cooling unit 30 and the resistance unit 20 are arranged in the vertical direction. It is possible to perform a load test (second embodiment) in a state of being installed so as to be arranged.
The cooling air sent from the cooling unit 30 to the resistance unit 20 is exhausted from the rear surface 10 f of the frame 10.

  The connection switching unit 40 includes a first terminal connection unit 41, a second terminal connection unit 42, a relay unit 45, and an operation unit 47 (see FIGS. 2 to 4 and 7).

  The first terminal connection unit 41 is a terminal for connecting a cable to a commercial power source (first embodiment) or a test target power source (second embodiment) such as a generator, and is connected to the commercial terminal via the first terminal connection unit 41. In a state where the power source (first embodiment) or the power source to be tested (second embodiment) and the resistor group (first resistor group G1 to eighth resistor group G8) constituting the resistor unit 20 can be connected. Is done.

The cable connection between the first terminal connecting portion 41 and the commercial power source (first embodiment) or the test target power source (second embodiment) is performed between the rack mounting bracket 51 and the front surface 10e at the opening of the first side surface 10a. (See FIG. 6).
It is desirable that a breaker such as a VCB (Vacuum Circuit Breaker) is provided between the first terminal connection unit 41 and the relay unit 45 or in the first terminal connection unit 41.

  The second terminal connection unit 42 is a terminal for connecting a cable to the commercial power source, and via the second terminal connection unit 42, the commercial power source, the cooling fan of the cooling unit 30, the relay of the relay unit 45, and the operation unit 47. Can be connected.

The cable connection between the second terminal connection portion 42 and the commercial power source is performed through the opening of the first side surface 10a and between the rack mounting bracket 51 and the front surface 10e (see FIG. 6).
It is desirable that a circuit breaker such as MCCBVCB (Molded Case Circuit Breaker) is provided between the second terminal connection unit 42 and the relay unit 45 or in the second terminal connection unit 42.

The relay unit 45 corresponds to the operation of the switch of the operation unit 47, and performs a relay (cooling fan relay RC) that performs on / off control of power supply to the cooling unit 30, and a resistor group that configures the resistance unit 20 (first The resistor group G1 to the eighth resistor group G8) have relays (first relay R1 to eighth relay R8) that perform on / off control of power supply to the respective groups.
The relays (cooling fan relay RC, first relay R1 to eighth relay R8) constituting the relay unit 45 are driven by a commercial power source (load test device driving power source) (see FIGS. 2 and 3).

  The operation unit 47 includes a power switch 47a, a cooling fan switch 47b, a resistance changeover switch 47c, and a display unit 47d (see FIG. 3).

The power switch 47a is a slide type (or toggle type or push button type) operation switch, and is used to select on / off of the load test apparatus 1.
When the power switch 47a is turned on, the circuit breaker of the first terminal connection unit 41 or a relay (not shown) is turned on, and the first terminal R1 to the eighth relay R8 of the relay unit 45 are connected to the first terminal. A current from the commercial power source (first embodiment) or the test target power source (second embodiment) connected to the load test apparatus 1 via the connection unit 41 can be made to flow.
When the power switch 47a is turned on, the circuit breaker of the second terminal connection unit 42 or a relay (not shown) is turned on, and the cooling fan relay RC and the operation unit 47 of the relay unit 45 are connected to the second state. A current from the commercial power source connected to the load test apparatus 1 through the terminal connection unit 42 can be made to flow.

The cooling fan switch 47b is a slide type (or toggle type or push button type) operation switch, and is used for selecting on / off of the cooling fan of the cooling unit 30 (mode switching).
When the cooling fan switch 47b is turned on, the cooling fan relay RC is turned on, and the commercial power source connected to the load testing device 1 via the second terminal connection unit 42 is connected to the cooling fan of the cooling unit 30. From which current can flow.

The resistance changeover switch 47c (the first resistance changeover switch 47c1 to the eighth resistance changeover switch 47c8) is a slide type (or toggle type or push button type) operation switch, and the first resistor group G1 to the eighth resistor group G8. This is a switch for performing on / off control of each relay (first relay R1 to eighth relay R8).
When the first resistance changeover switch 47c1 is turned on, the relay of the first resistor group G1 (first relay R1) is turned on, and the first terminal group 41 is connected to the first resistor group G1. Thus, a current from a commercial power source (first embodiment) or a test target power source (second embodiment) connected to the load test apparatus 1 can flow.
Similarly, the second resistance changeover switch 47c2 to the eighth resistance changeover switch 47c8 are turned on, so that the relay of the corresponding resistor group is turned on, and the resistor group is connected to the first terminal connection portion. A current from a commercial power source (first embodiment) or a test target power source (second embodiment) connected to the load test apparatus 1 via 41 can be made to flow.

  The display unit 47d is a display device that indicates the operating state of the load test apparatus 1. The first lighting unit 47d1 that lights during normal operation, the second lighting unit 47d2 that lights when a warning occurs, and the third lighting that lights when the operation is stopped due to an abnormality. Part 47d3.

The operation unit 47 is attached to the front surface 10e (first embodiment) of the frame 10 and the upper surface 10c (second embodiment, lower surface 10d) in the first region 11 of the frame 10 in a detachable state.
The operation unit 47 is attached to the frame 10 by screwing or the like through a first attachment hole 49a provided in the housing 471.

  The operation unit 47 is attached to the first region 11 of the frame 10 and parallel to the front surface 10e (first embodiment), or is the first region 11 of the frame 10 and perpendicular to the front surface 10e. The upper surface 10c, the lower surface 10d, and the side surfaces (first side surface 10a, second side surface 10b) are attached.

When the operation unit 47 is attached to any one of the opening of the upper surface 10c, the lower surface 10d, and the side surface (the first side surface 10a and the second side surface 10b), the cooling air is sucked in at least using the opening of the front surface 10e. (First embodiment).
When the operation unit 47 is attached to the front surface 10e, the cooling air is supplied using at least one of the opening of the upper surface 10c, the lower surface 10d, and the side surfaces (first side surface 10a, second side surface 10b) of the first region 11. Are inhaled (second embodiment).

In the present embodiment, the operation unit 47 is attached not only at one place but at least two places (front face 10e and upper face 10c (or lower face 10d, first side face 10a, second side face 10b)) in a detachable state. I can do it.
For this reason, even if the load test apparatus 1 is installed so that the resistance unit 20 and the cooling unit 30 are arranged in the horizontal direction, the operation is easy even if the load test apparatus 1 is installed so as to be arranged in the vertical direction. It becomes possible to do.

The operation unit 47 has a recess 473 that is recessed from the housing 471 so that the power switch 47a and the like do not protrude from the front surface 10e or the upper surface 10c when the operation unit 47 is attached to the frame 10. The power switch 47a is provided in the recess 473. A cooling fan switch 47b, a resistance changeover switch 47c, and a display unit 47d are provided.
A connector 48 is provided on the back side of the recess 473 (opposite to the front side where the power switch 47a and the like are provided), and the power switch 47a, the first terminal connection part 41, the second terminal connection part 42, the cooling fan switch 47b, The electrical connection of the cooling fan relay RC, the first resistance changeover switch 47c1 and the first relay R1 is made through the connector 48.
By attaching and detaching via the connector 48, the operation part 47 can be easily electrically wired.

  The housing 471 is provided with a second mounting hole 49b in addition to the first mounting hole 49a.

  The installation member 50 includes a rack mounting bracket 51 and a handle 53.

  The rack mounting bracket 51 has an L shape, and one surface constituting the L shape is attached to the first side surface 10a and the second side surface 10b of the frame 10 by screwing or the like, thereby forming the L shape. The other surface is attached to the server rack 90 by screws or the like (first embodiment).

  The load test apparatus 1 is attached to the server rack 90 so that a part of the first region 11 (front surface 10e, etc.) protrudes from the server rack 90. The first terminal connection portion 41 and the second terminal connection portion 42 are 1 region 11, which is disposed closer to the front surface 10 e than the position (the position where the rack mounting bracket 51 is mounted) attached to the server rack 90 on the side surface (the first side surface 10 a or the second side surface 10 b) of the frame 10. The

  In the second embodiment, the rack mounting bracket 51 is not used.

The handle 53 has a U-shape and is provided with two or more.
In the first embodiment in which the operation unit 47 is attached to the front surface 10e of the frame 10, the handle 53 is attached to the front surface 10e through the second attachment hole 49b, and is used for attaching and detaching the load test apparatus 1 to the server rack 90. The
In the second embodiment in which the operation unit 47 is attached to the upper surface 10c in the first region 11 of the frame 10, the handle 53 is attached to the front surface 10e without using the second attachment hole 49b, and the frame serving as the bottom surface for intake purposes. 10 is used to provide a certain distance between the front surface 10e of 10 and the installation surface on which the load test apparatus 1 is installed.

  However, in the second embodiment, instead of the two or more U-shaped handles 53, four or more casters 54 may be attached to the front surface 10e (see FIG. 9). In this case, the caster 54 is used to provide a constant distance between the front surface 10e of the frame 10 serving as the bottom surface and the installation surface on which the load test apparatus 1 is installed for the purpose of intake.

  When performing the first load test, which is a load test of the air conditioning equipment that cools the computer server, the load test apparatus 1 is installed so that the cooling unit 30 and the resistance unit 20 are arranged in the horizontal direction, and a resistor group ( The first resistor group G1 to the eighth resistor group G8) are supplied with electric power from a commercial power source via the first terminal connection part 41 and the relay part 45 (first relay R1 to eighth relay R8), and the frame 10 side surfaces (first side surface 10a, second side surface 10b) are attached to the server rack 90 holding the computer server, and the operation unit 47 is attached to the front surface 10e of the frame 10, and the opening of the front surface 10e and the first region 11 Intake is performed using at least one of the opening on the upper surface 10c and the opening on the lower surface 10d, and exhaust is performed in the horizontal direction from the rear surface 10f of the frame 10.

  When performing a second load test, which is a load test of a power source to be tested including a generator or a battery, the load test apparatus 1 is installed such that the cooling unit 30 is located below and the resistance unit 20 is located above. 53 (or the caster 54) is used to provide a certain distance between the front surface 10e and the installation surface on which the load test apparatus 1 is installed, and is used as a resistor group (first resistor group G1 to eighth resistor group G8). ) Is supplied with power from the power source to be tested via the first terminal connection part 41 and the relay part 45 (first relay R1 to eighth relay R8), and the operation part 47 is applied to the upper surface 10c or the lower surface 10d of the frame 10. Attached, intake is performed using at least one of the opening of the front surface 10e, the opening of the upper surface 10c and the opening of the lower surface 10d of the first region 11, and the exhaust is performed upward from the rear surface 10f.

  In the first load test, the load test apparatus 1 is attached to the server rack 90 where the computer server is installed, and power is supplied to the resistance unit 20 of the load test apparatus 1 using a commercial power source for driving the computer server. Check that the cooling capacity of the air conditioner is sufficient by operating the air conditioner in the room where the computer server is installed under the same heat generation as when the computer server is operating. To do.

At this time, the load test apparatus 1 is installed in the server rack 90 in the same manner as the computer server.
The air-conditioning equipment sets the blowing direction in consideration of the position of the object to be cooled, such as a computer server, so it generates heat equivalent to the heat generated by the computer server at the location where the computer server is installed. By using the load test apparatus 1, it becomes possible to perform a load test (first load test) of the air conditioner in a state close to an environment in which an actual computer server is operated.

  The first terminal connection portion 41 and the second terminal connection portion 42 that perform cable connection with the commercial power source are disposed closer to the front surface 10e than the position where the rack mounting bracket 51 is attached on the first side surface 10a, and the server rack 90 Therefore, even after the load test apparatus 1 is attached to the server rack 90, the cable connection can be easily performed.

Further, the operation unit 47 can be attached not only to the front surface 10e but also to another surface (here, the upper surface 10c), and only performs a load test in the installation form in which the air is exhausted in the horizontal direction as in the first embodiment. Instead, it is possible to perform a load test (second load test) in an installation mode in which exhaust is performed upward as in the second embodiment.
At this time, the handle 53 or the caster 54 makes it possible to provide a gap for taking in cooling air from between the front surface 10 e constituting the bottom surface of the frame 10 and the installation surface of the load test apparatus 1.

The operation of the operation unit 47 may be performed by the operator directly operating the switch of the operation unit 47, or with an external communication device (for example, a mobile phone in which predetermined software is installed) 69. There may be a configuration in which a communication unit 59 that performs wireless communication is provided, and the operation unit 47 is operated based on an instruction from the communication device 69 via the communication unit 59 (see FIG. 10).
In this case, the load test apparatus 1 further includes a communication unit 59, and the communication unit 59 receives a signal related to an instruction to operate the switch of the operation unit 47 from the communication device 69.
Thereby, an operator at a position away from the load test apparatus 1 can operate the operation unit 47 of the load test apparatus 1.

Alternatively, a load system including two or more load test apparatuses 1 and a communication device 69 may be configured, and the communication device 69 may perform wireless communication with the two or more load test apparatuses 1.
When the communication device 69 operates the operation units 47 of the plurality of load test apparatuses 1, it is possible to simultaneously operate the plurality of load test apparatuses 1 by one worker.
In particular, it is effective in a load test (first load test) of an air conditioning facility performed by installing a plurality of load test apparatuses 1.

DESCRIPTION OF SYMBOLS 1 Load test apparatus 10 Frame 10a 1st side surface 10b 2nd side surface 10c Upper surface 10d Lower surface 10e Front surface 10f Rear surface 11 1st area | region 12 2nd area | region 13 Cover 13a 1st side surface cover 13b 2nd side surface cover 13c Upper surface cover 13d Lower surface cover 20 Resistance Part 30 Cooling part 40 Connection switching part 41 First terminal connection part 42 Second terminal connection part 45 Relay part 47 Operation part 47a Power switch 47b Cooling fan switch 47c Resistance changeover switch 47c1 to 47c8 First resistance changeover switch to eighth resistance changeover Switch 47d Display unit 471 Housing 473 Recessed portion 48 Connector 49a First mounting hole 49b Second mounting hole 50 Installation member 51 Rack mounting bracket 53 Handle 54 Caster 59 Communication unit 69 Communication device 90 Server rack G1 to G8 First resistor Resistor group to eighth resistor group R1 to R8 First relay to eighth relay RC Cooling fan relay Re resistor

Claims (8)

A resistance portion provided with a plurality of resistor groups including resistors;
A cooling unit having a cooling fan for cooling the resistor group;
A frame having a first region and a second region, housing the cooling unit in the first region, and housing the resistance unit in the second region;
A load test comprising an operation unit including a resistance changeover switch that is detachable from the frame and is used for selecting a power supply among the plurality of resistor groups in order to perform a load test. A device,
The load test apparatus performs the load test in a state where the cooling unit and the resistance unit are arranged in a horizontal direction, and the cooling unit and the resistance unit are arranged in a vertical direction. It is possible to perform the load test in the installed state,
The exhaust of the cooling air sent from the cooling part to the resistance part is performed from the rear surface of the frame,
The operation unit is the first region of the frame and is attached to a front surface parallel to the rear surface, or the first region of the frame, which is an upper surface, a lower surface, and a side surface perpendicular to the front surface. Attached to either
When the operation unit is attached to any one of the upper surface, the lower surface, and the side surface, at least the front opening is used to suck the cooling air,
When the operation unit is attached to the front surface, the cooling air is sucked by using at least one of the upper surface opening, the lower surface, and the side surface opening of the first region. Load test equipment.   When performing a first load test that is a load test of an air conditioning facility that cools a computer server, the load test device is installed such that the cooling unit and the resistance unit are arranged in the horizontal direction, and the resistor The group is supplied with power from a commercial power source, the side surface of the frame is attached to a server rack holding the computer server, the operation unit is attached to the front surface of the frame, and the upper surface of the first region is The load test according to claim 1, wherein the intake is performed using at least one of an opening, an opening on the lower surface, and an opening on the front surface, and the exhaust is performed in a horizontal direction from the rear surface of the frame. apparatus. The load test apparatus is attached to the server rack such that a part of the first region protrudes from the server rack.
The terminal connection portion for connecting a cable with the commercial power source is disposed in the first region, closer to the front surface than a position where the side surface of the frame is attached to the server rack. Item 3. The load test apparatus according to Item 2.   The load test apparatus according to claim 3, wherein two or more U-shaped handles are provided on the front surface.   When performing a second load test that is a load test of a power source to be tested including a generator or a battery, the load test apparatus is installed such that the cooling unit is disposed below and the resistance unit is disposed above, The handle is used to provide a certain distance between the front surface and an installation surface on which the load test device is installed, and the resistor group is supplied with electric power from the power source to be tested, The intake is performed by using at least one of the upper surface opening, the lower surface opening, and the front surface opening of the first region, and is attached to the upper surface or the lower surface of the frame. The load test apparatus according to claim 4, wherein: Four or more casters are provided on the front surface,
When performing a second load test that is a load test of a power source to be tested including a generator or a battery, the load test apparatus is installed such that the cooling unit is disposed below and the resistance unit is disposed above, The caster is used to provide a constant distance between the front surface and the installation surface on which the load test apparatus is installed, and the resistor group is supplied with power from the test target power source, The intake is performed by using at least one of the upper surface opening, the lower surface opening, and the front surface opening of the first region, and is attached to the upper surface or the lower surface of the frame. The load test apparatus according to claim 3, wherein: The cooling fan is attached to the first region in a detachable state,
The load testing apparatus according to claim 6, wherein the cooling fan is attached and detached with at least the operation unit removed from the upper surface and the lower surface. Two or more load testing devices;
A communication device that performs wireless communication with the two or more load test apparatuses;
Each of the load test devices includes a resistance portion provided with a plurality of resistor groups including resistors, a cooling portion having a cooling fan for cooling the resistor groups, a first region, and a second region, A frame that houses the cooling unit in the first region, a frame that houses the resistance unit in the second region, and is detachable from the frame, and for performing a load test, among the plurality of resistor groups, An operation unit including a resistance changeover switch used for selecting a power supply, and a communication unit that performs wireless communication with the communication device;
Each of the load test devices performs the load test in a state where the cooling unit and the resistance unit are arranged in a horizontal direction, and the cooling unit and the resistance unit are arranged in a vertical direction. It is possible to perform the load test in the installed state
In each of the load test devices, the exhaust of the cooling air sent from the cooling unit to the resistance unit is performed from the rear surface of the frame,
In each of the load test apparatuses, the operation unit is attached to a front surface that is the first region of the frame and parallel to the rear surface, or is the first region of the frame that is attached to the front surface. It is attached to either the vertical top, bottom or side,
In each of the load test devices, when the operation unit is attached to any one of the upper surface, the lower surface, and the side surface, the cooling air is sucked in using at least the opening on the front surface,
In each of the load test apparatuses, when the operation unit is attached to the front surface, the cooling air is generated using at least one of the upper surface opening, the lower surface, and the side surface opening of the first region. The intake is performed,
The load system, wherein the communication unit in each of the load test apparatuses receives a signal related to an instruction to operate a switch of the operation unit from the communication device.

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