JPH0575282A - Live wire insertion/extraction device for electrical equipment - Google Patents

Abstract

PURPOSE:To enable surge or rush current when opening or closing a switching surge voltage to be reduced by providing a resistor connected in series with an auxiliary protruding electrode protruding longer than that by a protrusion method of a positive convex electrode. CONSTITUTION:A resistor 5 longer than a projection dimension of a protruding positive electrode 4 and is connected in series with a protruding auxiliary electrode 3 protruding from a reception side connector 2 and then whose edge portion is connected to a positive electrode 13 of an electrical device is provided. When a supply-side connector 1 is inserted, first the auxiliary electrode 3 is connected, a small amount of current flows to the device, and then a capacitor of a circuit within the device is charged by the small amount of current. Then, the positive electrode 4 is connected and then a current flows to the device but no rush current flows and no noises are generated since the capacitor is already charged by a small amount of current, thus achieving replacement and expansion without any problem while the device is functioning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-swap device for electric equipment which requires a part of the device to be replaced or added while the power is on.

[0002]

2. Description of the Related Art Conventionally, in the case of conversion when a device fails, or when adding an additional function later, power is supplied to prevent noise due to sparks in the power connector and welding of connector contacts. It was necessary to replace or add it without supplying it.

In particular, the magnitude of the switching surge largely depends on the system condition, and in the case of the 275 kV system or less, the lightning surge is generally the determining factor. However, in the 500 kV system, the air flashover characteristic of switching surge is saturated, which is the main factor in the insulation design. Therefore, a measure to reduce switching surge can be taken by adopting a resistance closing method for the circuit breaker.

For example, a circuit breaker with a resistor is designed to insert a resistor once in series with a line to suppress the switching overvoltage when the circuit breaker is turned on or off, and an optimal resistance value exists depending on the system configuration. All 500 kV circuit breakers in Japan have a resistance of 1 kΩ or several hundred Ω.

[0005]

The idea of the circuit breaker with a resistor is such that the structure of the device is complicated, and the power is always turned off when a part of the device is replaced or added, so that the circuit breaker must be operated at all times. There was a problem that devices that cannot be replaced cannot be replaced or added.

The present invention is a mechanism for inserting and removing the electric system of an electric device by a connector with a hot wire, and is provided with a terminal for sending power to the device and a terminal for supplying a small amount of current to the power line before the power is turned on. An object of the present invention is to provide a hot-swap device for electric equipment, which is characterized in that it suppresses inrush and current that occur when power is supplied from a state where power is not supplied.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a regular concave electrode electrically connected to a positive electrode of a power source and fixed in a buried state in a supply side connector, and the regular concave electrode and the power source side are connected in parallel. A supplementary concave electrode having an embedded dimension larger than that of a regular concave electrode, a negative concave electrode electrically connected to a negative electrode of a power source and having an implant dimension equal to that of a complementary concave electrode, and an electric device. A positive convex electrode that is electrically connected to the positive electrode and fixed in a state protruding from the receiving side connector and fitted with the regular concave electrode to energize, and protrudes from the receiving side connector longer than the protruding dimension of this positive convex electrode. Same as the auxiliary convex electrode, which is fixed in the state and fits with the auxiliary concave electrode to conduct electricity, the resistor connected in series with the auxiliary convex electrode and the other end of which is connected to the positive electrode of the electric device, and the auxiliary convex electrode. From the connector on the receiving side Fixed in a state out was a live insertion device for an electric apparatus including a negative convex electrode connected to the negative electrode of the electrical apparatus energized the other end engaged with the negative concave electrode.

[0008]

In the hot-swap device for electric equipment according to the present invention, the orthoconcave electrode electrically connected to the positive electrode of the power source is fixed in a state of being embedded in the connector on the supply side, and the complementary recessed electrode and the power source side are fixed. Are connected in parallel, and are fixed so that the embedded dimension in the supply side connector is larger than the concave electrode,
The negative concave electrode is electrically connected to the negative electrode of the power supply, and is fixed so that the embedded size in the connector on the supply side is the same as the complementary concave electrode, and the positive convex electrode is electrically connected to the positive electrode of the electric device. Connected, fixed so that it protrudes from the receiving connector, and is arranged so that it can be fitted to the regular concave electrode to energize, and the projecting convex electrode is projected from the receiving connector longer than the projecting dimension of the regular convex electrode. Fixed to the auxiliary concave electrode, and arranged so as to be fitted with the complementary concave electrode to conduct electricity, the resistor is connected in series with the complementary convex electrode, the other end is connected to the positive electrode of the electric device, and the negative convex electrode is complementary convex. The same size as the electrode is fixed so that it protrudes from the receiving side connector, and it is fitted into the negative concave electrode to conduct electricity, and the other end is connected to the negative electrode of the electric device.

[0009]

EXAMPLE An example of the present invention will be described below. Figure 1
The regular concave electrode 4a electrically connected to the positive electrode 11 of the power source and fixed in the embedded state in the supply side connector 1, and the regular concave electrode 4a and the power source side are connected in parallel, and the embedded dimension in the supply side connector 1 is positive. Complementary concave electrode 3a that is larger than concave electrode 4a
A negative concave electrode 6a that is electrically connected to the negative electrode 12 of the power source and has the same embedded dimension 1 in the supply side connector as the complementary concave electrode 3a; and a receiving side connector 2 that is electrically connected to the positive electrode 13 of the electric device. A positive convex electrode 4 which is fixed in a more protruding state and fits into the regular concave electrode 4a to energize, and a complementary concave electrode 3a which is fixed in a state projecting from the receiving side connector 2 longer than the projecting dimension of the regular convex electrode 4. Supplementary convex electrode 3 that fits and energizes
And the resistor 5 connected in series with the auxiliary convex electrode 3 and the other end connected to the positive electrode 13 of the electric device, and fixed by the same size as the auxiliary convex electrode 3 protruding from the receiving side connector 2 It shows a hot-swap device for an electric device, which is equipped with a negative convex electrode 6 which is fitted to the concave electrode 6a to be energized and whose other end is connected to the negative electrode 14 of the electric device.

That is, in one embodiment of the present invention, a power supply connector is provided with a connector pin for precharging so that the inside of the device is electrically stable in advance, and a weak current is passed before the power is turned on to suppress the inrush current. To prevent this, a connector is provided with an ordinary electrode and an electrode that is connected earlier than the ordinary electrode in terms of time, so that when connecting the connector, a weak current is applied to the electrode that is connected earlier than the ordinary electrode. Since the capacitors used in the circuit are charged, inrush current can be prevented and noise and malfunction of the circuit can be prevented. Alternatively, it can be performed without stopping the device at the time of expansion for the function expansion.

1 is a supply side connector for supplying power to the device, 2 is a side connector for receiving the power supply of the device, and 3 is an auxiliary convex electrode connected first, and first is the device. A weak current is applied to. In addition, 4 is a positive convex electrode connected to the second, so that power is supplied to the device. Reference numeral 5 is a resistor that allows a weak current to flow.

Now, when the supply side connector 1 is inserted, first the complementary recessed electrode 3 is connected, a weak current flows through the device, and the capacitor of the circuit in the device is charged by the weak current.
Next, the positive convex electrode 4 is connected and a current flows through the device,
Since the capacitor has already been charged by the weak current, the rush current does not flow, noise is not generated, and it does not affect others.

The present invention can be applied to a connector of a replacement portion at a defective portion of a computer, which must always be in operation.

In this embodiment, since the inrush current is unlikely to occur when the device is first turned on at the time of replacement of the device at the time of failure or at the time of addition such as function expansion, the device is not adversely affected by noise or the like. , Can be replaced or expanded without any problem while the device is functioning.

[0015]

According to the present invention, the switching surge voltage and the inrush current during switching can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a hot-swap device according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Supply side connector 2 ... Receiving side connector 3 ... Supplementary convex electrode 4 ... Positive convex electrode 5 ... Resistor 6 ... Negative convex electrode

Claims (1)

[Claims] 1. A regular concave electrode electrically connected to a positive electrode of a power source and fixed in a buried state in a supply side connector,
The orthoconcave electrode and the power source side are connected in parallel, and the embedding size in the supply side connector is larger than the orthoconcave electrode, and the negative electrode of the power source is electrically connected to the supply side connector. A negative concave electrode having an embedded dimension equal to that of the complementary concave electrode, and a positive convex electrode electrically connected to the positive electrode of the electric device and fixed in a state protruding from the receiving connector and fitted with the positive concave electrode to conduct electricity. And a supplementary convex electrode that is fixed in a state projecting from the receiving-side connector longer than the projecting dimension of the positive convex electrode and is fitted to the complementary concave electrode to conduct electricity, and the other end connected in series with the complementary convex electrode. The resistor connected to the positive electrode of the electric device, the auxiliary convex electrode, and the same size are fixed so as to project from the receiving side connector, and are fitted to the negative concave electrode to energize and the other end is For negative electrode of electric device Hot plug device of an electrical apparatus including a negative convex electrode being continued.