JPH10206477A - Durability test system and durability test method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable test of a degraded apparatus automatically in a short time with satisfactory reproducibility by applying repetitively automatically rush current to the apparatus. SOLUTION: This durability test system includes an AC stabilizing power source, a contact type electromagnetic switch, a DC power source, a noise filter and control section and is connected to an apparatus. The contact type electro-magnetic switch is turned on or off by a signal from the control section, and rush current is repetitively automatically applied to the apparatus by charging repetitively electric current from the AC stabilizing power source to the apparatus. Hence, labor for the test is eliminated to shorten time. Also, a rush current wave form obtained by the contact type electro-magnetic switch is akin to the rush current wave form applied to the apparatus under the practical use condition, and the respective wave forms in the repetitive application are fixed. Thus, the test with far more satisfactory reproductive property is performed in comparison with a manual test by using the contact type electro- magnetic switch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a durability test system and a durability test method for automatically and repeatedly applying an inrush current to a device which deteriorates due to frequent inrush current generated by turning on a power supply or the like. About.

[0002]

2. Description of the Related Art Conventionally, as a durability test method for a device which deteriorates due to frequent inrush current generated by turning on a power supply or the like, a power switch and a breaker of the device are repeatedly turned on / off manually to reduce the deterioration. I was just guessing the degree.

[0003]

However, the conventional method has the following problems since it is manual. That is, it takes time and effort. In repeated application, a uniform rush current waveform cannot be obtained, and the reproducibility of the test is poor.

[0004] The present invention solves the above-mentioned conventional problems, and automatically and with good reproducibility causes deterioration of equipment in which inrush current frequently flows due to power ON / OFF operation and the like, thereby improving its durability. It is intended to provide a durable durability test system and a durable test method.

[0005]

According to a first aspect of the present invention, there is provided a durability test system for performing a durability test of a device, which has a function of automatically and repeatedly applying an inrush current to the device. Test system. The present invention according to claim 2 (the present invention 2) is a durability test method for automatically and repeatedly applying an inrush current to a device in a durability test method for performing a durability test of the device.

The third aspect of the present invention (the third aspect of the present invention) is the durability test system according to the first aspect of the present invention, wherein a contact-type electromagnetic switch is used to repeatedly apply an inrush current.

A fourth aspect of the present invention (the fourth aspect of the present invention) is the durability test method according to the second aspect of the present invention, wherein a repetitive application of an inrush current is performed by a contact-type electromagnetic switch.

A fifth aspect of the present invention (the fifth aspect of the present invention) is the durability test system according to the third aspect of the present invention, wherein an AC stabilized power supply is connected to the device via a contact type electromagnetic switch and a noise filter.

According to a sixth aspect of the present invention, there is provided a durability test method according to the fourth aspect of the present invention, wherein the inrush current is repeatedly applied using the durability test system according to the fifth aspect of the present invention.

In the present invention, the inrush current is a large impulse-shaped current that flows instantaneously when a power switch, a power breaker, or the like is turned on. The operation time is as short as several μsec, but the peak value of the current may be several times the rated value of the device.

In the present invention, the contact type electromagnetic switch means a contact type electromagnetic switch which is brought into contact with an electromagnetic coil or the like to conduct electricity.

[0012]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a configuration diagram showing a configuration of an example of a durability test system of the present invention. FIG. 2 is an explanatory diagram showing the internal structure of the electromagnetic switch used in the present invention. FIG. 3 shows a full system configuration diagram of the present invention. FIG. 4 is a diagram showing the internal configuration of the relay box of the present invention.

As shown in FIG. 1, the endurance test system of the present invention comprises an AC stabilized power supply, a contact type electromagnetic switch, a DC power supply, a noise filter, and a control unit. did. In this durability test system, a stabilized power supply is used as an AC power supply. Since commercial AC power supplies have large fluctuations and small capacities, a large number of devices cannot be tested at once with good reproducibility. Therefore, an AC stabilized power supply having a smaller capacity and a larger capacity than a commercial AC power supply is used.

As shown in FIG. 2, the contact-type electromagnetic switch turns on the contact when a direct current flows through the coil L between the terminals 3-4, and conducts between the terminals 1-2.

In FIG. 1 and FIG. 2, one terminal of the contact type electromagnetic switch is connected to one of the output of a noise filter (output of an AC stabilized power supply) and terminal 2 is connected to one of the inputs of the device. Since the AC stabilized power output is always on, turning on the contact type electromagnetic switch causes an inrush current to flow through the device.

The rush current waveform obtained by the contact-type electromagnetic switch is close to the rush current waveform applied to the device in an actual use state, and each waveform in repeated application is always constant unlike the case of manual operation. . Therefore, the use of the contact-type electromagnetic switch provides a test with much higher reproducibility than the manual operation.

The DC power supply is provided for operating the contact type electromagnetic switch. The noise filter is provided in order to prevent a rush current generated when the contact type electromagnetic switch is turned on from flowing back to the AC stabilized power supply and destroying the power supply.

Further, the control unit includes a DC power supply (always O
N) and a relay board for turning on / off the connection of the contact type electromagnetic switch are built in. The signal type electromagnetic switch is also turned on / off by a signal from software similarly installed in the control unit. I have.

The software is an O / O of a contact type electromagnetic switch.
In addition to setting each time of N / OFF and the number of times of ON / OFF, it has a function of counting the number of times of ON / OFF.

In FIG. 1, a contact type electromagnetic switch is turned on / off by a signal from a control unit, and a power supply from an AC stabilizing power supply is repeatedly turned on to a device, thereby automatically applying a rush current repeatedly. It can be carried out.

[0021]

As shown in FIG. 3, AC power is supplied from a stabilized AC power supply (rated output power 2 kVA, rated output current 20 amps) to a total of three relay boxes via a noise filter. Each relay box is configured to have a channel to which a maximum of six devices can be connected, and a maximum of 18 devices can be connected in the entire system.

Here, the relay box has an internal structure shown in FIG. One side of each of the two power lines in the relay box is connected to the power input terminal block (ch1
To 6), a contact-type electromagnetic switch (R1 to 6), a fuse (F1 to 6), and a power output terminal block (ch1 to 6) are connected to "AC-OUT". The other side of the power supply line is directly connected from the input terminal block to the output terminal block.

Here, "AC-IN", "AC-OU"
“T” represents a line connected to the noise filter and the device in FIG. 3, respectively. In addition, a contact type electromagnetic switch (R
1-6) and the fuses (F1-6) are connected to the relay board of the control unit. The G terminal provided on the input / output terminal block indicates a ground (ground) terminal.

The software of the control unit includes ON time and OFF time (30 to 3600 seconds) of the contact type electromagnetic switch,
It has a function to set the number of N / OFF operations (up to 999999 times) and to count the number of ON / OFF operations (up to 999999 times).

Here, the relay box NO. 1 ch1
An example in which a device (hereinafter, simply referred to as a device) connected to is operated will be described in detail. Turn on power to equipment
In order to cause N (that is, an inrush current to flow through the device), the software controls a relay board in the control unit, and connects an electromagnetic switch R1 (hereinafter, referred to as R1) to a DC power supply.

Since the DC power supply is always ON, in FIG. 4, a direct current is supplied from “CROSS-RCOM” to “TOBI-R1” via the coil of R1, and the contact of R1 is connected as described in FIG. Connected.

Since the AC stabilized power supply is always on, R
The rush current flows to the equipment at the moment when the 1 contact is connected,
The power is turned on. To turn off the power to the device, the relay board is controlled to disconnect the connection between R1 and the DC power supply.

Fuse F1 (hereinafter referred to as fuse)
Must be installed to prevent the excessive current from continuing to flow due to short-circuiting of the equipment. This fuse may be an ordinary fuse, but in this embodiment, a fuse having a special structure is used in which a contact portion is connected when the fuse is blown by an excessive current.

That is, in FIG. 4, when the blown portion of the fuse is blown and the contact portion is connected, a short circuit occurs between "Cross-FCOM" and "Toby-F1", and the information is sent from the relay board to the software. Software immediately turns on R1
F and a double safety structure that turns off the current.

[0030]

According to the present invention, a test for measuring the deterioration of a device which is considered to be deteriorated due to frequent inrush current flowing in an actual use condition can be performed as follows. That is, by automatically and repeatedly applying the rush current to the device, the labor and time for the test can be greatly reduced and shortened. By using a contact type electromagnetic switch for the test system, each waveform in the repeated application of the inrush current became uniform, and the test with good reproducibility became possible. By using an AC stabilized power supply and a noise filter in the test system, the test can be performed efficiently, with good reproducibility, and safely.

As a result, the durability test for the inrush current of the equipment which is considered to be deteriorated due to the frequent flow of the inrush current is markedly reduced in man-hour, the period shortened and the reproducibility is better than before. It has become possible to provide consumers with more durable and safe products.

[0032]

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of an example of a durability test system of the present invention.

FIG. 2 is a diagram illustrating an internal structure of an electromagnetic switch used in the present invention.

FIG. 3 is a configuration diagram showing a configuration of a full system of the present invention.

FIG. 4 is an explanatory diagram showing an internal structure of a relay box used in the present invention.

Claims (6)

[Claims] An endurance test system for performing an endurance test of an apparatus, the endurance test system having a function of automatically and repeatedly applying an inrush current to the apparatus. 2. A durability test method for performing a durability test of a device, wherein the inrush current is automatically and repeatedly applied to the device. 3. In order to repeatedly apply an inrush current,
The durability test system according to claim 1, wherein a contact-type electromagnetic switch is used. 4. The durability test method according to claim 2, wherein the inrush current is repeatedly applied by a contact-type electromagnetic switch. 5. The endurance test system according to claim 3, wherein an AC stabilized power supply is connected to the device via a contact type electromagnetic switch and a noise filter. 6. The durability test method according to claim 4, wherein the inrush current is repeatedly applied using the durability test system according to claim 5.