JP3373148B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch body control unit.
Related to the structure of connectors used as part of
is there. [0002] 2. Description of the Related Art Conventionally, a switch has a ground fault in a distribution line.
If a fault occurs, a zero-phase current transformer installed on the distribution line
(ZCT) is connected to a ground fault relay that detects zero-phase current.
Has been continued. The ground fault relay is based on a ground fault detection signal.
To operate the trip coil provided inside the switch.
And automatically open the switch to cut the ground fault accident section from the healthy track.
Disconnect quickly. The relays are checked monthly and annually
When a ground fault occurs, use the ground fault characteristic tester prepared separately as
Whether the switch can be opened within a predetermined time.
Characteristic tests are required. The ground fault characteristic test is
Connect the test plug connector of the ground fault characteristic tester to the switch body.
Used as part of the control unit, between the switch and ground fault relay
Connector for checking the ground fault characteristics connected to
Below, it is called "GR check connector". ) Connect to line
Will be The GR check connector has a plurality of female dies.
The contact pins are arranged in the normal state (non-grounding
At the time of the test), corresponding to the female contact pin
Plug connector with multiple male contact pins
Connected. At the time of the ground fault characteristic test,
Connector is disconnected from the GR check connector,
A test plug connector is connected to the plug connector. [0004] The GR check connector and the plug connector
Kuta has metal inner hood and resin outer hood.
Food is provided. And the GR check command
Connector and plug connector are GR check connector
Insert the plug connector and set it around the plug connector.
Remove the metal connection nut from the GR check connector
It is screwed into the female thread formed around
It is fixed continuously. Provided in the GR check connector
The lead wire is crimped at the base end of the female contact pin
It is connected by soldering, etc.
The connector is drawn out of the connector
Connected to internal terminal block and switch. [0005] The GR check connector
Commercial frequency withstand voltage between female contact pins
V, 1 minute performance. In addition, control of the switch body
The commercial part withstand voltage of 2000V has a performance of 1 minute.
are doing. GR check connector is the control unit of the switch body
Since it is used as a part of the GR check connector
At the voltage application point
Requires characteristics equivalent to the withstand voltage value. That is, GR
It is necessary to improve the commercial frequency withstand voltage of
You. And the commercial frequency withstand voltage of the GR check connector.
As a measure to improve the pressure value, it is necessary to improve the commercial frequency withstand voltage
Between certain contact pins and other contact pins
Increase the separation, or use another connector with a higher commercial frequency withstand voltage.
Or used the data. [0006] However, as described above,
In addition, the conventional measures for improving the withstand voltage value of the commercial frequency are based on the GR check.
Spacing between contact pins arranged on the connector
Or use a different connector.
Was. That is, GR check which has been distributed in the market conventionally
Connectors are contact pin numbers and contact pins.
Use a GR check connector with a different
The Rukoto. For this reason, the commercial frequency withstand voltage value is improved.
GR check connector that has been
Is no longer compatible with the test connector
There was a problem. Further, a waterproofing device is provided on the GR check connector.
If additional functions are required, contact pins and lead wires
It is necessary to provide an airtight structure at the insertion portion. For this reason,
Compared to general connectors with bell commercial frequency withstand voltage
And the outside diameter becomes large, and the cost becomes expensive.
There was a title. Further, the GR check connector is controlled.
It is stored in a small space in the device. In the control device
Is equipped with a terminal block.
It is mounted with the output section etc. exposed. others
Metal for GR check connector and plug connector
Metal connection nut for internal hood or plug connector
Short-circuit failure due to contact between the terminal and the terminal block in the controller
There was a possibility. The present invention has been made to solve the above problems.
Its primary purpose is to withstand the commercial frequency withstand voltage.
To provide a connector capable of improving characteristics
It is in. The second object is to change the position of the contact pin.
Without further modification, FollowTest kits that have been on the market since
To maintain commercial frequency withstand voltage while maintaining compatibility with connectors.
It is to provide a connector which can be raised. [0011] [0012] [0013] Means for Solving the Problems The invention according to claim 1
Is a switchgear and a control device installed in a separate place
Is connected via a control line, and the switch and the control device
Between the control switch and the lead wire.
Connected to the control device via a lead wire.
Equipped with multiple terminals for testing during ground fault test
Connector for checking characteristics to which the plug connector is connected
Wherein the plurality of terminals are separated and insulated and fixed by an insulator.
The plurality of terminals include a ground terminal, and at least
If the means for improving the commercial frequency withstand voltage is provided around the
In both cases, connect the lead wire to the ground terminal,
A wire is connected to the case of the switch, and furthermore,
A pair of power terminals among the terminals are terminals provided in the control device.
Power terminals to which the control power is connected
Connected by wireMeans for improving the commercial frequency withstand voltage value
As the wall surface protrudes in the insulator in the longitudinal direction of the ground terminal
Formed between the ground terminal and a terminal other than the ground terminal.
Insulation distance extension structure to extend insulation distanceThat thing
Make a summary. [0014] [0015] [0016] [0017] [0018] BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment)
FIG. 1 to FIG. 1 show an embodiment embodied in a ground fault relay of a switch.
Explanation will be made according to No. 9. As shown in FIG. 9, an arm is provided above the telephone pole 10.
A gold 11 is provided, and a switch 12 is provided on the arm 11.
Fixed. A housing case 1 is provided below the telephone pole 10.
3 are provided, and a switch 1 is provided in the accommodation case 13.
The ground fault relay 14 as the control device of the second is accommodated and fixed.
I have. The ground fault relay 14 is connected to a switch via a control line 15.
12 during the ground fault characteristic test.
A ground fault characteristic tester 16 is connected to the ground fault relay 14 by a connection cable.
17 are connected. As shown in FIG. 8, the switch 12 is
Overcurrent lock type high-pressure air switch.
Of the U-phase, V-phase and W-phase distribution lines 18
Opening and closing operation by an external operation handle (not shown)
A closing portion 19 is provided. Note that, in FIG.
The wire 18 is connected to the power supply side on the left and to the load side on the right.
You. The opening / closing section 19 is automatically tripped to the opening / closing section 19
The trip coil 20 for operating
It is connected through one end of the helix 21. The trip movement
The work flows to the distribution line 18 when a ground fault occurs.
Detects the ground fault current and automatically switches the switch
This is an operation of instantly separating (opening) 19. A ground fault current equal to or greater than the set value is applied to the distribution line 18.
If it flows, the trip coil 20 is excited and the switch 1
2 is automatically opened. Also, distribution lines
In the event of a merger of ground fault and overcurrent at 18,
Prioritize the overcurrent accident and open the ground fault trip circuit.
The circuit breaker (not shown) of the substation operates and the distribution line 18 is not charged.
It is designed to open after transition to the power state. The other end of the micro switch 21 is overcurrent
The relay (OCR) 22 is connected to
-22 is composed of a pair of trip relays 23,24
ing. Common terminal 23 of the one trip relay 23
C and the normally closed contact 24A of the other trip relay 24
Connected to the U-phase or W-phase on the load side.
When the above overcurrent occurs, the trip relay 23,
24 actuators 23D and 24D are normally open contacts 23
B, 24B. The micro
The actuator 21A of the switch 21 is
It opens and closes in conjunction with the closing operation. On the power supply side on the distribution line 18, a U-phase
-Phase current transformer (Z
CT) 25 is provided, and the core of the zero-phase current transformer 25 is provided.
(Not shown) around the ground fault relay 14
The ground fault test current during the ground fault characteristic test.
Test wire 26 is wound. In addition, the power distribution
Between the switch 19 on the line 18 and the overcurrent relay 22,
Selective protection of load side ground fault and power supply side ground fault
A zero-phase voltage detection capacitor (ZPD) 27
Have been killed. On the other hand, the grounding relay 14 has a terminal block 28.
The terminal block 28 is provided with terminals A to M.
Have been. The terminals E and F are power supply terminals,
The control power supply (AC100V) P is connected to the slaves E and F.
I have. The terminal E is on the power supply side, and the terminal F is on the ground side.
You. Further, a ground fault relay 14 is provided between the terminal L and the terminal M.
Is trip coil due to the detection of ground fault at zero-phase current transformer 25
The trip operation was performed by outputting the trip signal to the
A contact 2 that turns ON following the trip operation
9 is connected. One end of the zero-phase current transformer 25 is controlled.
It is connected to terminal A via line 40, and the other end is a control line.
It is connected to terminal B via 41. The zero-phase voltage detection
One end of the output capacitor 27 is connected to a terminal C via a control line 42.
And the other end is connected to a terminal D via a control line 43.
Have been. Normally open contact 2 of the trip relays 23 and 24
3B and 24B are connected to a terminal H via a control line 44.
I have. One end of the test line 26 is connected to a terminal via a control line 45.
J and the other end to a terminal K via a control line 46.
It is connected to the. In the ground fault characteristic test, the ground fault characteristic
The test plug connector (not shown) of the tester is connected
Connector for ground fault characteristic check (hereinafter referred to as "GR check
Connector. " ) 51 is a female terminal (female contour)
Cut pins) a to j are provided. Ground fault on distribution line
In the normal state (at the time of non-grounding characteristic test)
Common plug connector connected to the GR check connector 51
Connected to the connector 52 corresponding to the female terminals a to j, respectively.
Plug terminals (male contact pins) kt
Have been killed. The female terminal a and the terminal D, and the female terminal c and the end
Child J, female terminal d and terminal K, female terminal g and terminal G, female
Terminal h and terminal I, female terminal i and terminal E and female terminal j
The terminal F is connected with the lead wires 55, 57 to 62, respectively.
Connected to each other. The lead wire 56 is connected to the female terminal b.
The lead wire 56 is connected to the case of the switch 12.
The female terminal b is connected to the
Have been. Female terminals e and f have lead wires 63 and 64
One end is connected. The trip coil 20 has a control line.
47, and the control line 47 is connected to the sleeve 65.
Therefore, it is connected and connected to the lead wire 63. That is,
The trip coil 20 includes a control wire 47 and a lead wire 63.
Is connected to the female terminal e. The trip
A control line 48 is connected to the common terminal 24C of the laser 24.
The control line 48 is connected to the lead by a sleeve 66.
It is connected to the line 64. That is, the common terminal 24
c is connected to the female terminal f via the control wire 48 and the lead wire 64
It is connected. At the time of the ground fault characteristic test, the common plug
Connector 52 is removed from the GR check connector 51, and the GR
Connector 51 is a test plug for the ground fault characteristic tester.
A connector (not shown) is connected. And the ground fault test
The ground fault test current generated by the
Through the control line 45 to the terminal J.
Output to phase current transformer 25. Then, the zero-phase current transformer 2
The test current flowing through the test line 26 of FIG.
And then lead 58, female terminal d and test
Output to the ground fault characteristics tester via the plug connector. Next, the structure of the GR check connector 51 will be described.
This will be described in detail. As shown in FIG.
The check connector 51 serves as a current-carrying part for making an electrical connection.
A plurality of female terminals a to j, and the respective female terminals a to j are separated.
Upper insert 71 and lower as insulator for insulation fixing
Part insert 72 and the inserts 71
Resin internal hood 73 and resin external to hold and protect
A hood 74, and an inner hood
A fixing ring 75 to be held and fixed in 73;
Lead wires connected to a to j (partially omitted in FIG. 1)
55-64(Partially omitted in FIG. 1).
You. Each of the inserts 71 and 72 has a female terminal.
The insertion holes 71A and 72A corresponding to the numbers a to j are respectively provided.
The insertion hole 7A is formed at the tip of the insertion hole 71A.
By making the diameter smaller than 1A, the contact surface 71B
Is formed. The upper insert 71 has
A flange 71C is formed on the lower insert 72.
Is formed with a flange 72C. A female screw is provided on the outer periphery of the tip of the inner hood 73.
73A, a flange 73B is formed on the outer periphery of the base end.
An annular locking portion 73C is provided on the inner periphery of the inner hood 73.
Is formed. The GR check connector 5
1 is less likely to receive an external load.
Less strength is required, and it is a connection part between connectors
The inner hood 73 may be a resin inner hood 73.
it can. The outer hood 74 is provided on a surface along the axial direction.
In addition, it is possible to divide into two, the upper end of each inner circumference
Corresponds to the shape of the flange 73B of the inner hood 73.
An annular groove 74A is formed, and the outer periphery of the outer hood 74 is formed.
Through holes 74B are formed at the upper left and right ends. Also before
At the base end of the outer hood 74, lead wires 55 to 55 are provided.64Outside
A lead portion K for drawing out to the portion is formed. First, the GR check connector 51 is
Lead wire 55-64Female terminals a to j are soldered respectively
Connection. Then, the upper insert 71
With the flange 71C of the flange 71C and the lower insert 72,
Back to back on each other. And use the special tool
Of the female terminals a to j are the contact surfaces of the upper insert 71.
71BDown to each insert 71, 72 until it touches
Press in from the part insert 72 side. That is, the female terminal
a to j, lead wire 55 to64, Upper insert 71 and
The lower insert 72 is assembled integrally. Next, the integrated insert 71,
The inner insert 72 has a flange 71C of the upper insert 71.
Insert until it comes into contact with the locking part 73C of the lock 73, and fix it.
The ring 75 is mounted from below the inner hood 73. Said
The flange 72C of the lower insert 72 is a fixing ring 75.
, That is, the inserts 71 and 72 are fixed
Preventing the inner hood 73 from falling off by the ring 75
Has been made. In addition, the inner peripheral surface of the inner hood 73 and the upper
A space S is formed between the external insert 71 and the outer peripheral surface thereof.
ing. Thereafter, the inner hood 73 is connected to the flange 73B.
And a pair of external hoods 74 so that the
The through-hole of the outer hood 7474BBolt
(Not shown) and screwed into the nut to
The unit hoods 74 are fixed. The inner hood 73
Is the flange73BIs locked in the groove 74A.
The vertical movement of the outer hood 74 is restricted.
ing. For this reason, the inner hood 73 is
There is no escape from 4. On the other hand, as described above, the lead wire 56 is
12 is a ground wire connected to the case 12A.
The female terminal b connected to the lead wire 56 serves as a ground terminal.
ing. And the lead wire of the lower insert 72
56 and the periphery of the female terminal b to which the lead wire 56 is connected.
In the area, a wall surface 76 as a commercial frequency withstand voltage value improving means is provided.
The lower insert 72 is formed to protrude in the vertical direction.
That is, a power supply terminal (lead wire 57 etc.)-A ground terminal (lead
The insulation distance (creepage distance) between the lead wires 56 etc.) is the shape of the wall surface 76
It is longer than when it is not done. The upper part
In the lower part of the insert 71, a concave portion corresponding to the wall surface 76
77, the upper insert 71 and the lower
It is in close contact with the insert 72. Next, the structure of the common plug connector 52 will be described.
Will be described. The regular plug connector 52 is a GR
It has a similar structure to the
Parts that are different from the GR check connector 51
Only the minutes will be described. As shown in FIG. 1, the common plug connector
The plurality of plugs 52 serve as current-carrying parts for making electrical connections.
Terminal kt (partially omitted in FIG. 1), each of the plug terminals
Upper insert as insulator for separating and fixing kt
G 79 and lower insert 80, each of the inserts 7
A resin inner hood 81 for holding and protecting 9, 80;
A resin outer hood 82, the inserts 79, 80
Ring 83 for holding and fixing the
Connection for fixing the plug connector 52 for connection
It is composed of a nut 84. Internal hood of the common plug connector 52
A flange-shaped step on the outer periphery of 8181AIs formed,
The inside of the resin connection nut 84 is engaged with the stepped portion 81A.
Has been stopped. That is, the stepped portion 81A is connected to the connection nut 8
4 is located inside. Then, the inner hood 81
Of the inner hood 73 of the GR check connector 51
It is formed slightly smaller than the inner diameter. The common plug connector 52 is not grounded.
Of the GR check connector 51 during the short-circuit characteristic test
It has a function as a damper.
Formed at the base end of the outer hood 82 of the connector 52
The lead wire is not drawn out from the outlet 82A.
For this reason, the outlet 82A is filled with an insulating rubber material 85.
Sealed by filling. In addition, GR check
Terminal l connected to female terminal b of connector 51
Around the wall to improve the withstand voltage of the commercial frequency.
6 are formed to project. The GR check connector 51 and a common plastic
Connection with the plug connector 52
2 to the space of the GR check connector 51
S, and plug terminals k to female terminals a to j.
Insert t. Then, the connection of the regular plug connector 52
Connect nut 84 to female screw 73A of GR check connector 51.
Screw. In addition, during the ground fault characteristic test,
GR check connector 5 instead of plug connector 52
The test plug connector connected to 1 is also a regular plug connector.
The connection can be made in the same manner as the connector 52. Therefore, according to the present embodiment, the following effects can be obtained.
Can be obtained. A female terminal which is a ground terminal in the lower insert 72;
A wall surface 76 was formed to protrude around the terminal b. Therefore, each
Insulation between the power terminal and the earth terminal in the female terminals a to j
The distance (creepage distance) will be extended, and each female terminal
It is possible to improve the withstand voltage of the commercial frequency between a and j.
You. Also, in order to improve the withstand voltage of the commercial frequency,
The spacing between the female terminals a to j can be increased,
Do not use another connector with a high voltage value.
In other words, since there is no significant change in connector shape,
Compatible with more commercially available test plug connectors
Sex can be maintained. Therefore, the test plug connector
GR check connector 51 while maintaining compatibility with
Of the GR chain
Easy handling and maintenance of the connector 51
Can be. The inside of the GR check connector 51
Mode 73, external hood 74, common plug connector 52
Inner hood 81, outer hood 82 and connection nut 84
Is made of insulating resin, that is, the outer surface of the connector
Is formed of an insulator. For this reason,
If it is stored in a small space, it may come into contact with a terminal block, etc.
Is also less likely to lead to ground faults. (Second Embodiment) Next, a second embodiment embodying the present invention.
The state will be described with reference to FIG. As shown in FIG. 2, the present embodiment
The wall surface 76 on the upper part of the part insert 72 has a substantially triangular cross section.
It has been replaced by the raised portion 86 and the upper insert 7
A concave portion 87 on the lower surface is formed corresponding to the projection 86.
Only the point different from the first embodiment. Therefore,
In this embodiment, the same member configuration as in the first embodiment is used.
The same reference numerals are used for
Abbreviate. The lead wire 56 of the lower insert 72 is
The commercial frequency withstand voltage around the connected female terminal b
The protrusion 86 as a value improving means is provided on the lower insert 72.
The lower surface of the lower insert 72
Is provided with a wall 76 as a means for improving the withstand voltage of the commercial frequency.
Projections are formed on the lower surface of the support 72. That is,
A female terminal b to which the raised portion 86 and the lead wire 56 are connected;
A recess 87 is formed between them, and the recess 87
Insulation distance (creepage distance) between power supply terminal and ground terminal
Separation) is longer than when the projection 86 is not formed.
Has become. Also, on the lower surface of the upper insert 71,
A recess 87 corresponding to the projection 86 is formed.
The upper insert 71 and the lower insert 72 are in close contact
are doing. Therefore, according to the present embodiment, the first real
The same effect as in the embodiment can be obtained. (Third Embodiment) Next, a third embodiment embodying the present invention.
The state will be described with reference to FIG. As shown in FIG. 3, this embodiment employs the lower part.
The protrusion 86 on the upper surface of the insert 72 is positioned around the female terminal b.
It is replaced by the formed barrier 89 and the upper part
The recess 90 on the lower surface of the insert 71 corresponds to the barrier 89
Only the point formed is different from the second embodiment.
You. Therefore, in the present embodiment, the same as the second embodiment is used.
The same reference numerals are used for the same components to duplicate
The explanation given above is omitted. The lead wire 56 of the lower insert 72 is
The commercial frequency withstand voltage around the connected female terminal b
The barrier 89 as a means for improving the value of the lower insert 72
The lower insert 72 is formed so as to protrude upward.
On the lower surface, a wall surface 76 as a means for improving the commercial frequency withstand voltage value is provided.
The projection is formed. That is, the electric power is
The insulation distance (creepage distance) between the source terminal and the ground terminal is a barrier
It is longer than in the case where 89 is not formed.
In addition, the lower surface of the upper insert 71 is provided with the wall surface 76.
Since the concave portion 90 corresponding to the
The seat 71 and the lower insert 72 are in close contact with each other. Therefore, according to the present embodiment, the first real
The same effect as in the embodiment can be obtained. (Fourth Embodiment) Next, a fourth embodiment embodying the present invention.
The state will be described with reference to FIG. As shown in FIG.
Female type with the wire 89 removed and the lead wire 56 connected.
A contraction tube 91 made of insulating rubber is attached below the terminal b.
Of the upper insert 71 and the lower insert.
The insertion hole 72A of the port 72 is
Only the point that the diameter is expanded corresponding to the length
Different from the third embodiment. Therefore, in this embodiment,
The same reference numerals denote the same members as in the third embodiment.
A duplicate description will be omitted. The lead wire 56 of the lower insert 72 is
The commercial frequency withstand voltage is below the connected female terminal b.
A contraction tube 91 made of insulating rubber is provided as a value improving means.
Is being worn. That is, the upper insert 71 and the lower
Up and down of the female terminal b on the contact surface with the insert 72
Leakage current is cut off by covering the section with insulator
It will be. Also, the insulation distance between the power terminal and the ground terminal
It can be said that (creepage distance) is extended. Therefore, according to the present embodiment, the first real
In addition to the same effects as the second and third embodiments,
The effect of can be obtained. ・ Shrink tubing (insulator) for female terminal b (earth terminal)
Leakage current is reliably shut off by mounting 91
In addition, the insulation distance between the power supply terminal and the ground terminal is extended.
This improves the commercial frequency withstand voltage between terminals.
You. (Fifth Embodiment) Next, a fifth embodiment embodying the present invention.
The state will be described with reference to FIG. As shown in FIG. 5, this embodiment mainly
The lower outer diameters of the mold terminals a to j (partially omitted in FIG. 5) are insertion holes.
At the point smaller than the inner diameter of 71A, 72A, the fourth
Different from the embodiment. Therefore, in the present embodiment,
The same reference numerals denote the same members as in the fourth embodiment.
Therefore, a duplicate description will be omitted. The outer diameter of the lower part of each of the female terminals a to j is a through hole.
It is formed smaller than the inner diameter of 71A, 72A. This
Between the upper insert 71 and the lower insert 72
In the flashing portion on the contact surface, each of the female terminals a to j
A gap having a certain distance between the insertion holes 71A and 72A.
A gap 92 is formed. That is, the power supply is
The insulation distance (space distance) between the terminal and ground terminal is extended.
The Rukoto. Also, the lead at the lower end of the lower insert 72
A wall surface 76 is formed around the line 56. Therefore, according to the present embodiment, the first real
The same effect as in the embodiment can be obtained. (Sixth Embodiment) Next, a sixth embodiment embodying the present invention.
The state will be described with reference to FIG. As shown in FIG. 6, the present embodiment has
Flash at the contact surface between the insert 71 and the lower insert 72
In the entangled portion, a certain width around a certain section around the female terminal b
Only the point where the air layer 93 is formed
Different from the embodiment. Therefore, in the present embodiment,
The same reference numerals denote the same members as in the fifth embodiment.
Therefore, a duplicate description will be omitted. The upper insert 71 and the lower insert
At the contact surface with 72 (the flashing point of the ground part),
Up and down around the female terminal b to which the lead wire 56 is connected.
An air layer 93 having a constant width is formed in the section.
That is, between the power terminal and the ground terminal by the air layer 93,
The insulation distance (space distance) has been extended. Also at the bottom
A wall surface 76 is formed around the lead wire 56 at the lower end of the insert 72.
Is formed. Therefore, according to the present embodiment, the first embodiment
The same effect as in the embodiment can be obtained. (Seventh embodiment) Next, a seventh embodiment of the present invention will be described with reference to FIG.
explain. As shown in FIG. 7, this embodiment mainly uses a GR chip.
External hood 74 and check plug
The outer hood 82 of the connector 52 is made of insulating rubber or resin.
Molded outer hood 94,96Replaced by
In that it differs from the first to sixth embodiments. Obedience
Therefore, in the present embodiment, the same as the first to sixth embodiments is used.
The same reference numerals are used for the same components to duplicate
The explanation given above is omitted. As described above, the GR check connector 51
The outer hood 94 is molded with rubber or resin.
I have. External hood 94 of the GR check connector 51
Is a lead wire 5 connected to each of the female terminals a to j (partially omitted in FIG. 7).
5-64(Partly not shown in FIG. 7) Lead wire after connecting
55-64Including a fixed section of the coating 95 that protects
Have been. In the normal state (during the non-grounding characteristic test),
Plug connector connected to the GR check connector 51
The outer hood 96 of the connector 52 is also molded with rubber or resin.
It is molded. And the connection nut84Opening
Packing 97 as a sealing means is inserted from the side,
Step formed on the outer periphery of the unit hood 8181AAbut
It is attached at the position where it does. The GR check command
When connecting the connector 51 and the plug connector 52,
Kin 97 is the inner hood 73 of the GR check connector 51
Wire end contact surface73DTo the plug connector 52
The contact surface with the tightening of the connection nut 8473DPressed on
It is designed to be closely attached. Therefore, according to the present embodiment, the first actual
The following effects can be obtained in addition to the same effects as the embodiment.
Wear. In the GR check connector 51, the external hood 94
Is covered with insulating rubber or resin including a certain section of the covering 95.
It was molded. For this reason, the inner hood 73 and the outer
GR check connector via the joint with the cable 94
Water does not enter the interior of 51. For this reason, GR
The inside of the check connector 51 can be waterproofed. Also, the step 81A of the inner hood 81
Is provided with a packing 97, and the packing 97 is a G
Between the R check connector 51 and the common plug connector 52
At the time of connection, the GR check
Is pressed against and abuts against the contact surface 73D of the connector 51.
You. Therefore, the connection between the inner hood 81 and the outer hood 96 is not possible.
GR check connector 51 and regular plug
It is possible to prevent water from entering the inside of the nectar 52.
it can. The above embodiments are modified as follows.
May be implemented. -Similar to the seventh embodiment, the first to sixth embodiments
Hood 7 of GR check connector 51 in the form
4 and external hood of common plug connector 5282Insulate
Mold with rubber or resin,
The packing 97 may be attached to the connector 52. this
In this way, the commercial frequency withstand voltage can be improved.
And GR check connector 51 and regular plug connector
The waterproof function can be given to the connector 52. In the first to seventh embodiments,
The female terminals a to j and the plug terminals k to t, respectively.
The upper inserts 71, 79 and
The lower inserts 72 and 80 are used by providing two members.
However, the upper inserts 71 and 79 and the lower insert 7
2, 80 may be integrally formed as one member. this
By doing so, the upper inserts 71, 79 and the lower
Contact surfaces with the gates 72 and 80, that is, leakage current can flow.
Eliminates passages, resulting in reduced leakage and commercial frequency withstand
The pressure can be increased. The first embodiment to the first embodimentSixIn the embodiment
The inner hood 73,81And the outer hood 74,82
But the inner hood 73,81And external hood 7
Four,82May be integrally formed. Like this
If this is the case, the number of parts and the number of assembly steps can be reduced. In the first to seventh embodiments,
The female terminals a to j are each connected to a lead wire 5 by soldering.
5-64Connected to the
May be connected. In this case, the female terminals a to j
Lead wire 55-64Connection work can be simplified
it can. In the fourth embodiment, the contraction tube
To the upper insert 71 and the lower part around the female terminal b.
Upper and lower portions of the flash portion at the contact surface with the insert 72
Although it was attached only to the section,
May be worn. Even in this case, from the flashing part
Leakage current between the female terminals a to j.
The commercial withstand voltage value can be improved. The first to fourth embodiments and the fourth embodiment
In the sixth embodiment, the female end which is
The commercial frequency withstand voltage value improving means is provided only around the child b.
Has improved the commercial frequency withstand voltage around all of the female terminals a to j
Means may be provided. Even in this case, the female terminals a to
The commercial frequency withstand voltage value between j can be improved. [0071] [0072] According to the first aspect of the present invention, a commercial circuit is provided.
Wave breakdown voltage characteristics can be improved. [0073]Also,Changing the position of the contact pin
Compatible with existing test connectors
It is possible to improve the commercial frequency withstand voltage while maintaining the
it can. [0074] [0075]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a connector according to a first embodiment. FIG. 2 is a sectional view of a connector according to a second embodiment. FIG. 3 is a sectional view of a connector according to a third embodiment. FIG. 4 is a sectional view of a connector according to a fourth embodiment. FIG. 5 is a sectional view of a connector according to a fifth embodiment. FIG. 6 is a sectional view of a connector according to a sixth embodiment. FIG. 7 is a sectional view of a connector according to a seventh embodiment. FIG. 8 is a connection diagram showing connection of a connector to a switch and a relay. FIG. 9 is an explanatory diagram showing a state in which a switch, a relay, and a tester are attached to a utility pole. [Description of Signs] 12 ... Switch, 14 ... Ground fault relay as control device , 1
6: ground fault characteristic tester, 40 to 48: control line, 51: GR
Check connector, 5 5-64 ... leads, 7 1 ... insulation
Upper insert as body 72 ... bottom insert as an insulator, 7 3 ... inside the hood, 7 4 ... external hood, 7
6 ... wall surface, 86 ... protrusion, 87 ... groove (recess) , 89 ... barrier, 90 ... recess, 91 ... contraction tube as an insulator, 92 ... gap, 93 ... space, air layer as an insulation layer,
97 : packing, a to j: female terminals (contact pins), A to M: terminals .

Continuation of the front page (56) References JP-A-7-220826 (JP, A) JP-A-8-64297 (JP, A) JP-A-6-245327 (JP, A) JP-A-55-68070 (JP) , A) Actually open 63-182037 (JP, U) Actually open 1954-96889 (JP, U) Actually open 1959-129181 (JP, U) Actually open 1975-25289 (JP, U) Actually open 5-144494 (JP, U) Shokai 55-139524 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 13/46 301

Claims (1)

(1) A switch (12) and a control device (14) provided separately from the switch (12) are control lines (40-46).
And the switch (12) and the control device (1)
4), and is connected to the switch (12) via control wires (47, 48) and lead wires (63, 64), and is connected to the control device (14) via a lead wire (55). ~ 6
2) a plurality of terminals (a to j) connected via
In the characteristic check connector (51) to which the test plug connector is connected at the time of the ground fault characteristic test, the plurality of terminals (a to j) are separated and insulated and fixed by insulators (71, 72). (A) to (j) include a ground terminal (b), and a commercial frequency withstand voltage value improving means (76) is provided at least around the ground terminal (b);
A lead wire (56) is connected to the ground terminal (b), and the lead wire (56) is connected to the case (12A) of the switch (12). The pair of power supply terminals (i, j) are connected to a power supply terminal (E, F) to which a control power supply is connected among the terminals (A to M) provided in the control device (14), and lead wires (61, 62). ) , Said commercial frequency withstand voltage value improving means (76)
The wall (76) is a ground terminal on the insulator (72).
(B) is formed so as to project in the longitudinal direction, and is connected to the ground terminal (b).
Insulation distance between terminals (a, c to j) other than the ground terminal
A connector having an insulation distance extending structure for extending the distance .