JP3718875B2 - Simple load resistor for generator energization test - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a load resistor used for an energization test of a generator, for example, and more particularly to a simple load resistor for an energization test of a generator that can be easily carried and operated and can be quickly conducted by any person. is there.
[0002]
[Prior art]
Conventionally, a water resistor using water as a resistor is generally known as a load resistor used for an energization test of a generator. However, the conventional water resistor has a problem that a large amount of water is required, the apparatus is enlarged, and the test operation is troublesome.
[0003]
In addition, the water used as a resistor during the test operation is circulated because it requires a large amount as described above, but since the water already used contains a lot of impurities, the used water is filtered. The current situation is that the equipment for that purpose has become complicated and expensive. Therefore, the present inventor develops a load resistor for a generator energization test in which a resistor used in a so-called energization test of a type that does not use water as a generator load resistor is configured by a metal member that is not water. It came to.
[0004]
Moreover, we have developed a simple load resistor for generator energization testing that is convenient to carry and easy to operate.
[0005]
[Problems to be solved by the invention]
As described above, the present invention was created to solve the above-described conventional problems, and is a generator energization test that is inexpensive to manufacture, convenient to carry, easy to handle and easy to handle, and excellent in safety. An object of the present invention is to provide a simple load resistor.
[0006]
[Means for Solving the Problems]
The present invention is a simple load resistor for a current test of a 400V or 200V low-voltage three-phase AC generator,
A square frame (13) framed in a rectangular shape ;
A plurality of base bodies (1) having a substantially cylindrical shape, which are attached in parallel to each other in the square frame (13) at a predetermined interval, and a plurality of base bodies (1) are attached at intervals in the outer peripheral longitudinal direction of the base body (1). A projecting piece (2...) Projecting from the outer periphery of the base body (1) in a substantially annular shape, a resistance material (3) installed inside the base body (1), and the resistance material (3); The insulating member (4) in the form of a powder filled between the inner wall of the base body (1), both end portions of the base body (1), and the resistor disposed outside the both end portions of the base body (1). And a projection which is interposed between the connection terminals (5) connected to the material (3) and has an outer shape substantially the same as that of the base (1), and is fitted into the inner walls of both ends of the base. An insulating member (6) attached in the longitudinal direction of the base body (1), having a fitting portion; Have,
The base end of the connection terminal (5) is connected to the resistance material (3) inside the base body (1), and the other end side is formed into a male screw shape, and the insulating member (6) Is screwed in the axial direction and exposed to the outside. A nut is screwed to the exposed portion and fixed to the insulating member (6), and a nut is further screwed to attach the connecting member (14). Adjacent connection terminals (5...) Of load resistor resistors (10...) Having a rated voltage of 116 V, a rated capacity of 1, 67 KW, and a dielectric strength of 1500 V / minute. a resistor circuit (12) which is formed by serially connecting with said connecting member (14),
With
Wherein the plurality of corner frame body frame (11) having a substantially square shape (13 ...) is erected in the vertical direction, arranged laterally abutted built in the plurality of rows, and each adjacent corner frame load resistor dexterity resistor had a (13, 13) with the angle frame (13 ...) (10 ...) with each other non-overlapping arrangement to form the resistor circuit group to a position (30) When,
A case (31) in which the resistor circuit group (30) is installed;
Cooling that is adjacent to the position near the tip of the resistor circuit group (30) and is installed vertically so that air can flow from the tip of the resistor circuit group (30) toward the rear end. Fan (24),
Casters (35 ...) attached to the bottom of the case (31);
A frame-shaped reinforcing member (33) attached to the outside of the cooling fan (24);
Having,
It is characterized by this.
[0007]
[Action]
The simple load resistor for generator energization test according to the present invention is easy to manufacture, and can be easily used by anyone for the test operation in the generator power generation test using the load resistor. It is. Furthermore, since the insulation measures are sufficient, it is possible to safely carry out a power-on test (load test) of the generator.
[0008]
【Example】
Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory view showing a configuration of a load resistor resistor 10 used in a generator energization test load resistor constituting the present invention. In FIG. 1, reference numeral 1 denotes a substrate. The substrate 1 has a substantially cylindrical shape and is usually formed with a length of about 1 meter.
[0009]
In the longitudinal direction of the outer periphery of the base body 1, a plurality of projecting pieces 2... Projecting in a substantially annular shape to the outer periphery of the base body 1 are attached with an interval of about 7 mm.
In addition, a resistance material 3 such as a heating wire is disposed inside the base body 1. The resistance material 3 is energized, and whether or not a generator or the like is normally generating power through the load resistor resistor 10. An energization test will be performed.
[0010]
The plurality of projecting pieces 2... Serve to dissipate heat generated when the resistance material 3 is energized. Here, both ends of the resistance material 3 are connected to connection terminals 5 and 5 provided on both ends of the base 1. In addition, between the resistance material 3 and the inner wall of the base body 1, an insulating member 4 configured in a substantially powder form is filled in order to insulate the resistance material 3 and the base body 1 to be energized.
[0011]
Further, as can be understood from FIG. 1, insulating members 6 are interposed between the connection terminals 5, 5 connected to the resistance material 3 and both ends of the base 1.
The use state of the present invention will be described above. Here, as shown in FIGS. 2 and 3, for example, a plurality of load resistor resistors 10 (about 102) are installed and used.
[0012]
The load resistor resistor 10 is configured according to standards such as a rated voltage of 116 V, a rated capacity of 1, 67 KW, a dielectric strength of 1500 V per minute, etc., and a 400 V or 200 V so-called low voltage generator energization test. It will be used in multiple.
In this embodiment, as is understood from FIG. 2, the resistor circuit 12 includes a plurality of load resistor resistors 10... At a predetermined interval in a square frame 13. (About 9 in this embodiment) are attached, but are formed using a plurality of them.
[0013]
That is, in order to be able to withstand a voltage of, for example, 400V in one resistor circuit 12, two load resistor resistors 10 and 10 are required, and the two load resistor resistors 10 and 10 are connected in series. In order to connect, the connection terminals 5 and 5 are connected by the connection member 14.
An example of the development of the resistor circuit 12 is shown in FIG.
In the circuit form shown in FIG. 4, since the generator to be tested is a three-phase AC type, a three-phase AC type is used in accordance with this, and a total of six load resistor resistors 10. The resistor circuit 12 is configured.
[0014]
Therefore, in this embodiment, one resistor circuit 12 is constituted by six of the nine attached in the square frame 13. As a result, the one resistor circuit 12 can conduct an energization test with a voltage of 400 V and a capacity of approximately 10 KW.
Thus, various forms of the resistor circuit 12 are configured and determined as described above, and in this embodiment, three circuits having a capacity of 10 kW (here, six circuits are required as described above). The total number of resistors 10 for load resistors is 18 and therefore 9 are attached to the corner frame 13, so two rows of corner frames 13 and 13 are required.), With a capacity of 20 KW 6 circuits (in this case, 12 circuits are required, so the total number of resistors 10 for the load resistor is 72, and thus 8 rows of square frames 13 are required). There are two circuits (this load resistor resistor 10 has a rated voltage of 116 V, a rated capacity of 0, 833 kW, and a dielectric strength of 1500 V / 1 minute, and 12 load resistor resistors 10 are required. Therefore, Two rows of square frames are required.)
[0015]
Furthermore, if it is connected as shown by a two-dot chain line shown in FIG. 4 and a broken line shown in FIG. 6, a circuit configuration as understood from FIG. 5 can be obtained, and a generator having a voltage of 200 V can be energized. It can be set as the resistor circuit 12 which can respond to a test. In this way, the resistor circuit group 30 is configured by incorporating a plurality of rows of square frames 13... Into the main body frame 11.
[0016]
Here, as can be seen from FIG. 3, the corner frame 13 installed second from the outside on the left side toward the inside as viewed in the drawing is attached to the corner frame 13 located in the outermost row 9. A plurality of load resistors 10 are attached so as to be positioned at substantially the middle positions of the load resistor resistors 10. This is because when a current is passed through each of the load resistor resistors 10..., Heat is generated at a considerably high temperature. Therefore, the cooling fan 24 must cool the load resistor resistors 10. Because.
[0017]
Therefore, in order to efficiently perform the cooling work by the cooling fan 24, so-called a plurality of load resistor resistors 10 are alternately arranged so as to improve the wind contact. Here, as described above, the corner frames 13 to which the plurality of load resistor resistors 10 are attached are arranged in a plurality of rows in the main body frame 11.
[0018]
In this embodiment, a generator having a capacity of about 10 KW to a capacity of about 160 KW can be tested. When testing the generators having different capacities, it may be performed by operating a changeover switch 34... For switching a magnet switch (not shown).
[0019]
Incidentally, the cooling fan 24 is provided adjacent to the resistor circuit group 30 so as to efficiently cool the plurality of load resistor resistors 10... Constituting the resistor circuit group 30. Further, a plurality of casters 35... Are attached to the bottom of the case 31 so that they can be easily moved and transported.
[0020]
Further, in the present embodiment, a frame-shaped reinforcing material 33 protruding in a square shape is provided outside the cooling fan 24, and the frame-shaped reinforcing material 33 can be installed with the bottom portion. That is, depending on the place where the test is performed, there is a place where the air blown by the cooling fan 24 cannot be taken out in the lateral direction (horizontal direction). In such a place, the cooling fan 24 is installed on the lower side and the air blowing direction. Can be changed from the lower side to the upper side.
[0021]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a load resistor for a so-called dry type generator energization test that does not require any water at a low cost, and the test operation handling is simple and excellent in safety. A load resistor for machine energization test can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic configuration explanatory diagram of a resistor for a load resistor according to the present invention.
FIG. 2 is an explanatory diagram (part 1) of a schematic configuration of a resistor circuit according to the present invention.
FIG. 3 is an explanatory diagram (part 1) of a schematic configuration of the present invention.
FIG. 4 is a schematic configuration explanatory diagram (No. 2) of a resistor circuit according to the present invention.
FIG. 5 is a schematic configuration explanatory diagram (No. 3) of a resistor circuit according to the present invention;
FIG. 6 is a schematic configuration explanatory diagram (No. 4) of a resistor circuit according to the present invention.
FIG. 7 is a schematic configuration explanatory diagram (part 2) of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base | substrate 2 Overhang | projection piece 3 Resistive material 4 Insulating member 5 Output terminal 6 Insulating member 10 Load resistor resistor 11 Main body frame 12 Resistor circuit 13 Square frame 14 Connection member 24 Cooling fan 30 Resistor circuit group 31 Case 33 Frame shape Reinforcing material 34 Changeover switch 35 Caster

Claims (1)

A simple load resistor for a current test of a 400V or 200V low-voltage three-phase AC generator,
A square frame (13) framed in a rectangular shape ;
A plurality of base bodies (1) having a substantially cylindrical shape, which are attached in parallel to each other in the square frame (13) at a predetermined interval, and a plurality of base bodies (1) are attached at intervals in the outer peripheral longitudinal direction of the base body (1). A projecting piece (2...) Projecting from the outer periphery of the base body (1) in a substantially annular shape, a resistance material (3) installed inside the base body (1), and the resistance material (3); The insulating member (4) in the form of a powder filled between the inner wall of the base body (1), both end portions of the base body (1), and the resistor disposed outside the both end portions of the base body (1). And a projection which is interposed between the connection terminals (5) connected to the material (3) and has an outer shape substantially the same as that of the base (1), and is fitted into the inner walls of both ends of the base. An insulating member (6) attached in the longitudinal direction of the base body (1), having a fitting portion; Have,
The base end of the connection terminal (5) is connected to the resistance material (3) inside the base body (1), and the other end side is formed into a male screw shape, and the insulating member (6) Is screwed in the axial direction and exposed to the outside. A nut is screwed to the exposed portion and fixed to the insulating member (6), and a nut is further screwed to attach the connecting member (14). Adjacent connection terminals (5...) Of load resistor resistors (10...) Having a rated voltage of 116 V, a rated capacity of 1, 67 KW, and a dielectric strength of 1500 V / minute. a resistor circuit (12) which is formed by serially connecting with said connecting member (14),
With
Wherein the plurality of corner frame body frame (11) having a substantially square shape (13 ...) is erected in the vertical direction, arranged laterally abutted built in the plurality of rows, and each adjacent corner frame load resistor dexterity resistor had a (13, 13) with the angle frame (13 ...) (10 ...) with each other non-overlapping arrangement to form the resistor circuit group to a position (30) When,
A case (31) in which the resistor circuit group (30) is installed;
Cooling that is adjacent to the position near the tip of the resistor circuit group (30) and is installed vertically so that air can flow from the tip of the resistor circuit group (30) toward the rear end. Fan (24),
Casters (35 ...) attached to the bottom of the case (31);
A frame-shaped reinforcing member (33) attached to the outside of the cooling fan (24);
Having,
A simple load resistor for a generator energization test.

Images