JPH0552767U - Electrode for phase detector - Google Patents

Abstract

(57) [Abstract] [Purpose] One of the phase detector electrodes for detecting the phase of various power distribution equipment, one phase detector for overhead line high voltage phase detector, urban high voltage phase detector and underground line Provided is an electrode for a phase detector which can play three types of roles of a high-voltage phase detector. [Structure] The electrode 20 attached to the tip of the phase detector body 10 is configured to be detachable from the phase detector body 10.
As a result, if electrodes corresponding to various adaptive electric wires are prepared, it is possible to perform phase detection on various electric wires simply by exchanging the electrodes attached to one phase detector main body.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an improvement of an electrode provided at a tip of a phase detector for performing phase detection on various power distribution devices. Specifically, electrodes corresponding to various power distribution devices can be replaced with one phase detector body. The present invention relates to a phase detector electrode that can be attached.

[0002]

[Prior Art]

 In order to reduce the power outage range and work outage time due to power wiring work, and to improve the service of power consumers and facilitate the implementation of power outage work, a switch is temporarily installed near the power outage work site. , A bypass circuit of distribution line is provided for the construction section to separate the work section and supply power to the terminal side.

When this bypass circuit is provided, work is performed in a live state in order to separate work sections after the bypass circuit is formed, and if a connection between different phases is made, a serious short circuit or the like will occur. There is a risk of causing an accident. Therefore, it is desirable to measure the phase alignment and phase rotation of the distribution lines at two separate points where the bypass circuit should be connected, from the viewpoint of ensuring work safety and improving workability.

Conventionally, a phase detector has been used to measure the phase rotation of a distribution line or the like at two points separated from each other.

There are three types of conventional phase detectors of this type, namely, a high-voltage detector for overhead lines, a high-voltage detector for urban areas, and a high-voltage detector for underground cables, depending on the electric wires to be measured. ..

The overhead line high-voltage phase detector is used when an insulated wire and a bare wire are used in an overhead distribution line, and an electrode is brought into direct contact with the wire during measurement. The high voltage phase detector for urban type is used when a cable is used in the overhead distribution line, and the electrode is brought into contact with the detection terminal of the urban type switch to perform measurement. In addition, the underground high-voltage phase detector is used when the phase of the underground distribution line is detected, and the electrode is brought into contact with the detecting sheath of a multi-circuit switch or an automatic cabinet to measure. Is.

[0007]

[Problems to be solved by the device]

 However, these phase detectors cannot be used in combination with each other because the applicable wires are limited and the shapes of the electrodes are different, so each phase detector must be prepared and used properly. There was a great deal of annoyance.

Further, since the phase detector main body and the electrode are integrated, there is a problem that the measurement work is difficult at some measurement positions.

The present invention has been made in view of the conventional situation as described above, and at least three types of electrodes corresponding to various adaptable electric wires are prepared and can be replaceably attached to the phase detector main body. By doing so, a single phase detector can provide an electrode for a phase detector that can perform three types of roles: a high-voltage phase detector for overhead lines, a high-voltage phase detector for urban types, and a high-voltage phase detector for underground lines. The purpose is to do.

Another object of the present invention is to provide an electrode for a phase detector in which the measurement work is improved by improving the shape and mounting structure of the electrode.

[0011]

[Means for Solving the Problems]

 In order to achieve such an object, the electrode for a phase detector of the present invention is a phase detector for performing phase detection of various power distribution equipment, in which the electrode attached to the tip of the body of the phase detector is attached to and detached from the body of the phase detector. It is configured freely.

In addition, the electrode is formed in an L shape, and the L shape electrode is attached to the phase detector main body so that the angle can be adjusted. Further, the electrode is formed in advance in a distribution device such as a switch. It is configured so that it can be fitted and fixed in the recess of the formed electro-detection terminal.

[0013]

[Work]

 The electrode attached to the tip of the phase detector main body is made detachable from the phase detector main body, so that three types of electrodes are prepared for each electric wire to be measured, and the electrode that matches the electric wire to be measured is the main body of the voltage detector. The phase of the desired wire can be detected by simply attaching it to. As a result, it is not necessary to bother to prepare three types of phase detectors.

Further, by forming the electrode in an L-shape and allowing the L-shape electrode to be attached to the phase detector main body so that the angle can be adjusted, it is only necessary to change the direction of the electrode during measurement. The contact with the voltage detection terminal becomes easy and the workability is improved.

Further, by configuring the electrode so that it can be fitted and fixed in the recess formed in the power distribution device such as the switch in advance, the electrode can be connected to the detection terminal of the switch during the phase detection work in the city type switch. The measurement work can be performed by fitting and fixing, and the workability can be improved.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a partial cross-sectional explanatory view of an embodiment of a phase detector body and a phase detector electrode attached to the tip of the phase detector of the present invention, and FIG. 2 is the phase detector shown in FIG. FIG. 3 is a cross-sectional view of an electrode for a phase detector having an L-shaped electrode portion attached to the main body of the detector, and FIG. 3 is an electrode for a phase detector having a fitting type electrode portion attached to the main body of the phase detector shown in FIG. FIG. 4 is a partial cross-sectional view of FIG. 4, FIG. 4 is a side view of the fitting type electrode section of FIG. 3, and FIG. 5 is a city of a phase detector electrode having an L-shaped electrode section and a fitting type electrode section. It is explanatory drawing which shows the measurement state in a mold switch.

As shown in FIG. 1, the phase detector of the present invention comprises a phase detector body 10 and a phase detector electrode 20 that is detachably attached to the tip of the body 10.

In the phase detector main body 10, a contact plate 12 connected to an internal device is spring-biased and guided by a guide rod 13 so as to be movable up and down in a tip recess 11.

The phase detector electrode 20 is attached to a cylindrical case 22 accommodating a capacitor 21 and the like, a hook-shaped electrode portion 23 attached to the tip of the cylindrical case 22, and a proximal end of the cylindrical case 22. The hook-shaped electrode portion 23 and the base end contact 24 are connected to each other via the capacitor 21 and the spring member 25. Has been done.

The phase detector main body 10 and the phase detector electrode 23 are attached by fitting the base end portion 26 of the phase detector electrode 23 into the tip recess 11 of the phase detector main body 10. By this fitting, the base contact 24 of the phase detector electrode 20 contacts the contact plate 12 on the main body side and is electrically connected. In addition, both can be removed freely because they are simply fitted and attached to each other.

According to the phase detector configured in this manner, the hook-shaped electrode portion 23 at the tip of the phase detector is directly hooked on an overhead distribution line using an insulated wire or a bare wire to make a measurement. be able to.

In such a phase detector, the phase detector electrode 20 may be directly connected to the phase detector body 10 as described above, but it is desired to lengthen the phase detector according to the measurement situation. In this case, it is advisable to connect a relay rod (not shown) having contacts at both ends between them. The same applies to the examples described below.

Next, another embodiment of the phase detector electrode detachably attached to the phase detector body 10 will be described with reference to FIGS. 2 to 4.

First, FIG. 2 shows a multi-circuit open / close circuit in an overhead distribution line in which a cable is used, in which an electrode part is brought into contact with a detection terminal of a city type switch or when phase detection of an underground distribution line is performed. 1 shows an example of a phase detector electrode 30 for measuring by contacting an electrode portion with a sheath for electric detection such as a vessel or an automatic cabinet. The electrode 30 for a voltage detector is different from the electrode for a voltage detection having the hook-shaped electrode portion in the shape of the tip electrode portion and the mounting structure of the electrode portion, but other structures are almost the same. Since they are removably attached to the phaser body, description of the same structural parts will be omitted, and only different points will be described.

The electrode portion 32 attached to the tip of the tubular case 31 has an L shape, and is provided slidably on the tip of the tubular case without the base end being fixed inside the case. There is. A polygonal nut 33 such as a hexagonal nut is fixedly provided on the bent side of the base end side thereof, while the hexagonal nut 33 having such a size that the polygonal nut 33 can be fitted to the tip of the cylindrical case 31. A polygonal groove 34 such as a groove is formed so that the polygonal nut 33 and hence the L-shaped electrode portion 32 cannot rotate when fitted together.

Further, a nut 35 serving as a spring seat is fixedly provided at a substantially intermediate position on the base end side of the L-shaped electrode portion 32, and the first spring is provided between the nut 35 and the inner wall of the tip of the tubular body case 31. A second spring 37 having a smaller elastic force than that of the first spring 36 is provided between the nut 35 and the inner wall of the lower end of the tubular case 31 that accommodates the proximal end of the L-shaped electrode portion 32. The L-shaped electrode portion 32 is provided in a compact manner so that the L-shaped electrode portion 32 can be stably attached to the cylindrical body case 31 and the retaining thereof is prevented.

Therefore, when the L-shaped electrode portion 32 is pulled up by hand, the polygonal nut 33 is disengaged from the polygonal groove 34 as shown by an imaginary line and rotation is allowed. Therefore, in this state, the polygonal nut 33 is rotated to a predetermined position. After releasing the hand, the polygonal nut 33 can be fitted into the polygonal groove 34 again by the elastic force of the first spring 36, and the angle of the L-shaped electrode portion 32 with respect to the phase detector main body 10 can be set very easily. be able to. This angle setting can be freely set in 60 degree increments when using a hexagon nut, for example, and during measurement, the hexagon nut is fitted and fixed in the hexagon groove by the first spring force. The L-shaped electrode portion 32 can be easily brought into contact with the detection terminal or the like.

Next, FIG. 3 and FIG. 4 show an example of an electrode 40 for a phase detector for measuring an overhead distribution line using a cable by fitting an electrode portion into a detection terminal or the like formed in an urban type opener and making contact with the detection terminal. Although the shape and structure of the electrode part are different from those of the above-mentioned examples, the connection structure in the cylindrical case is almost the same as the structure shown in FIG. To

In FIG. 3, the phase detector electrode section 40 is composed of a tubular case 41 and an electrode section 43 provided at the tip of a flexible conductor-accommodating connection line 42 attached to the tip thereof. The electrode part 43 is provided at the tip of the insulating case 44 so that the electrode part 43 can be fitted and fixed in a detection terminal which is formed as a depression such as an urban switch. As shown in FIG. 4, the electrode portion 43 is provided so as to project from the insulating case 44, and is formed so that it can be easily fitted into the voltage detection terminal. The proximal end of the connecting wire 42 is fixed to the distal end of the tubular case 41, and is connected to the contact point 47 at the proximal end of the tubular case via a spring member 45 and a capacitor 46. With such a phase detector electrode 40, it is possible to improve the workability because the measurement can be performed by fitting the electrode 40 for the urban type switch into the detection terminal formed by being preliminarily recessed during the phase detection work.

That is, FIG. 5 shows an example of the phase detection work in the urban switch 50 using the phase detector electrodes 30 and 40 of FIGS. 2 and 3 and 4. In the case of the L-shaped electrode portion 32, the tip thereof is brought into contact with the depressed detection terminal 51, and in the case of the fitting type electrode portion 43 of FIGS. 3 and 4, the depressed detection portion 51. The protruding electrode portion 43 is fitted into the terminal 51, fixed, and measured. As shown in the figure, the electric detection terminal portion of the urban switch 50 is partially cut away to cover the conductor 52 connected to the devices inside the switch with an insulating layer 53, and the outer periphery thereof with a semiconductive layer 54. The detection terminal 51 is formed by cutting a part of the semiconductive layer 54 and the insulating layer 53 to form a recess.

As described above, the phase detector electrodes 20, 30, 40 of the present embodiment exist in three types according to the measurement target electric wires, and each of them is detachably attached to the same phase detector main body 10. Therefore, it is not necessary to prepare three types of phase detectors according to the purpose of each phase detection as in the conventional case. Further, the angle of the L-shaped electrode portion 32 can be set or the fitting type electrode portion 43 is used, whereby the measurement work efficiency can be improved.

Although the phase detector electrode has been described in the above embodiment, the present invention is not limited to this, and the present invention can be used as an electrode of various measuring instruments such as an electrode for detecting voltage and the like.

[0033]

[Effect of the device]

 Since the phase detector electrode of the present invention is configured as described above, it has the following special effects.

In the phase detector electrode according to claim 1, since the electrode attached to the tip of the phase detector main body is detachable from the phase detector main body, there are three types for each electric wire to be measured. The phase of the desired wire can be detected simply by preparing the electrode and attaching the electrode that matches the wire to be measured to the detector body. Therefore, it is not necessary to purposely prepare three types of electrode-integrated phase detectors.

In the electrode for a phase detector according to claim 2, the electrode is formed in an L-shape, and the L-shaped electrode can be attached to the phase detector main body so that the angle can be adjusted. Thus, it becomes easy to change the direction of the electrode at the time of measurement, and it becomes easy to make contact with the detection terminal at the time of measurement, so that the measurement workability can be improved.

Further, in the phase detector electrode according to the third aspect, the electrode is configured so that it can be fitted and fixed to the recess formed in the power distribution device such as the switch in advance. In the phase detection work, the measurement work can be performed by fitting and fixing the electrode to the detection terminal formed by being recessed in the switch, thereby improving the measurement workability.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional explanatory view of an embodiment of a phase detector main body constituting a phase detector of the present invention and a phase detector electrode attached to the tip thereof.

FIG. 2 is a cross-sectional view of a phase detector electrode including an L-shaped electrode portion attached to the phase detector body shown in FIG.

FIG. 3 is a partial cross-sectional view of a phase detector electrode provided with a fitting type electrode unit attached to the phase detector main body shown in FIG.

FIG. 4 is a side view of the fitting type electrode part of FIG.

FIG. 5 is an explanatory diagram showing a measurement state of an electrode for a phase detector including an L-shaped electrode portion and a fitting-type electrode portion in an urban switch.

[Explanation of symbols]

 10 Phase Detector Main Body 11 Recess of the Phase Detector Main Body 12 Contact Plate 20 Electrode for Phase Detector 21 Capacitor 22 Cylindrical Case 23 Hook-shaped Electrode Part 24 Contact 25 Spring Member 30 Phase Detector Electrode 31 Cylindrical Case 32 L-Shaped Electrode Part 33 Polygonal nut 34 Polygonal groove 35 Nut 36 First spring 37 Second spring 40 Phase detector electrode 41 Cylindrical case 42 Connection line 43 Fitting type electrode part 44 Insulation case 45 Spring member 46 Capacitor 47 Contact point 50 Urban type opening / closing Vessel 51 voltage detection terminal

Claims (3)

[Scope of utility model registration request] 1. A phase detector for performing phase detection of various power distribution devices, wherein an electrode attached to a tip of the phase detector main body is detachably attached to the phase detector main body. electrode. 2. The phase-detector electrode according to claim 1, wherein the electrode is formed in an L-shape, and the L-shape electrode is attached to the main body of the phase-detector so that the angle can be adjusted. 3. The phase detector electrode according to claim 1, wherein the electrode is formed so as to be capable of being fitted and fixed in a recess of a detection terminal formed in advance in a power distribution device such as a switch.