JP3515434B2 - Connector device for ground fault relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground fault generated in a distribution line.
Ground fault connection that automatically opens the high-voltage load switch when an accident is detected
In the applianceRukoThe present invention relates to a nectar device. [0002] 2. Description of the Related Art Conventionally, this kind of ground fault relay has been
When a ground fault occurs, zero-phase current is
The current is detected via the zero-phase current transformer. So
The ground fault relay opens the high-voltage load based on this detection signal.
Activate the trip coil provided on the switch to automatically activate the switch.
Open and separate the ground fault section immediately from the healthy track
Things. In such a ground fault relay, a monthly point
Use a ground fault characteristic tester prepared separately for inspection and annual inspection.
The switch can be opened within a predetermined time in the event of a ground fault.
It is obligatory to conduct a characteristic test such as whether or not to perform the test. [0004] However, the conventional ground fault
In the operation test of the relay, it is installed on the ground fault relay.
Terminals and terminals provided on the connected body such as a ground fault tester
And the operator was purposely provided one by one to the ground fault relay
Must be connected to terminal group. For this reason,
Connection work is troublesome for workers.
Was. Also, the connection work as described above prevents connection errors.
Also requires the skill of workers
Was. In addition, due to the spread of OA systems in recent years,
Uninterruptible work is required. [0005] The present invention is directed to the problems existing in the above prior art.
The focus was on the subject, and the purpose was
Work on connecting the connected object to the connector of the relay
Can be performed easily regardless of the skill level of the
To avoid power outages during testingobtainGround fault relayIn
Nectar deviceIs to provide. [0006] Means for Solving the Problems To solve the above problems,
In the ground fault relay of claim 1 of the present application,Connector device
Of the present invention relates to detection signals from a zero-phase current transformer provided in a distribution line.
Signal, and based on the detection result,
A trip signal is output to the trip means,
Ground fault relay with control circuit for trip operation control of stage
InA connector device, in the middle of the control circuit.
A connector that can be connected
Connection connector and test connector,
And the connector has an input terminal and an output terminal.
So that the child and the child Pairs of terminals
Having a pair to form an open circuit of the trip circuit.
Terminal and the test line passing through the zero-phase current transformer.
A pair of terminals and the output of the trip circuit on the ground fault relay side
The pair is connected to the terminal that outputs the signal following the operation.
And the connecting connector
Is the trip circuit when connected to the connector.
Short circuit the open circuit part that
When the connector is removed from the connector, the trip circuit is configured.
Open circuit section to be opened, and
When the connector is connected to the connector,
While maintaining the open state of the open circuit that constitutes the loop circuit,
A test circuit of a ground fault characteristic tester is connected to the test line.
ToThe gist is that it is configured. [0007] According to the present invention having the above structure, the connector
To the connection connector, and output from the connection connector
Terminals and input terminals, and ground fault relay and switch
Set to the normal state to connect the control circuit with the lip means
Monitor for ground faults on distribution lines. Also, the connection connector
Grounding characteristics by replacing the test connector
Configure a characteristic test circuit using a tester and
Open the STOP signal circuit. Therefore, distribution lines are
Only the ground fault relay can be tested while the
You. [0008] DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention is applied to a non-directional SOG grounding relay.
A specific embodiment will be described with reference to the drawings. FIG.4As shown in the illustration above.
A switch 3 is fixed to the arm 2 provided. Telephone pole 1
A storage case 4 is provided at a lower portion, and the storage case 4
Houses a ground fault relay 5. Ground fault relay 5 is controlled
It is connected to the switch 3 via the control lines 6A to 6G. Earth
A portable ground fault characteristic tester 7 described later is connected to the relay 5.
It is detachably connected via a connection cable 8.
ing. The switch 3 is provided with an SOG (overcurrent accumulating trip).
Type high-voltage load switch with ground fault trip
Of each phase consisting of U-phase, V-phase and W-phase
Open / close operation of the distribution line using an external operation handle (not shown)
Opening / closing part is provided. Same opening inside the opening / closing section
Trip coil for automatically tripping the closing part
Is provided. [0011] Trip operation is the distribution of power due to a ground fault.
When a ground fault current flows through the line, the ground fault current of the distribution line is detected,
Automatically instantly opens and closes the open / close section when the set value is exceeded
Operation. Then, a ground fault current exceeding the set value
When the air flows, the trip coil is excited and the open / close
It is designed to open dynamically. Also, if the distribution line
In the event of a merger accident with
Priority, and open the ground fault trip circuit, not shown
The breaker of the substation operates and the distribution line shifts to a non-charged state.
After opening, it is opened. One end of the trip coil is a micro switch
Is connected to the overcurrent lock relay. over current
The lock relay consists of a pair of trip relays,
The common terminal of the lip relay and the
The closed contact is connected. And then to U phase or W phase
When a current exceeding the overcurrent lock value flows, each trip relay
Actuators can be connected to normally open contacts.
You. The actuator of the micro switch is an open / close unit.
It opens and closes in conjunction with opening and closing operations. On the distribution line, zero of U-phase, V-phase and W-phase
A zero-phase current transformer for detecting a phase current is provided.
Around the iron core (not shown) of the zero-phase current transformer, a ground fault relay 5 is provided.
When checking whether the operation of
A test wire for flowing a ground fault test current is wound. The grounding relay 5 has power supply terminals P 1, P
2 and terminals A1, B1, C1, W1, W2, D1, E1
 , F1, and G1 are provided. Of these terminals, the terminal
A1, C1, F1, and G1 are female connection connectors described later.
Connected to receptacle terminals a, c, g, h of
Have been. In the connector 27, each of the receptors
Ring terminal b,g, e, dAnd each receptacle terminal a,h,
f, cAre paired with each other, and the terminals of each pair
To form an open circuit. More specifically, connection of the connector 27
To explain, the other end of the trip coil is
3 via a terminal A (not shown) and a control line 6A.
Connected to the receptacle terminal b. Both trips
The normally open contact of the relay is an unillustrated end provided on the switch 3.
Connected to the terminal B1 via the slave B and the control line 6B.
You. The common terminal of the other trip relay is
Through a terminal C (not shown) and a control line 6C.
It is connected to the receptacle terminal d. One end of zero-phase current transformer
Is a terminal D (not shown) and a control line provided on the switch 3.
It is connected to terminal D1 via 6D. Zero-phase current transformer
The other end is connected to a terminal E (not shown) provided on
It is connected to a terminal E1 via a control line 6E. One end of the test line is provided on the switch 3
Terminal F, control line 6F, terminal F1 and lead 2 not shown
8e is connected to the receptacle terminal g.
You. The other end of the test line is connected to the switch
No terminal G, control line 6G, terminal G1 and lead wire 28
It is connected to the receptacle terminal h via f.
The terminals a, c, f, and e of the connector 27 are
Terminals A1, C1, W1 via lead wires 28a to 28d
 , W2. The terminals A1 to E1
Is a control circuit (not shown) provided in the ground fault relay 5.
It is connected. A grounding relay 5 has a female connector for power supply.
The connector 29 is provided with a receptacle end.
Children i and j are provided. And the receptacle terminal
i is connected to the power supply terminal P1 via the lead wire 30a.
Have been. The receptacle terminal j is connected via the lead wire 30b.
And connected to the power supply terminal P2. Power supply terminal
P1 and P2 are AC100V provided in the switch case
Via a cable (not shown) to a power transformer (not shown)
Connected. The connection connector 27 of the ground fault relay 5 includes:Figure
As shown in 2At the time of non-grounding operation test,
Under normal conditions for monitoring ground faults, a male connector
The cutter 31 is detachably mounted. Connecting connector 3
1 is provided with plug terminals a2 to d2. plug
The terminal a2 and the plug terminal b2 are interconnected by a lead wire 38a.
Connected. Plug terminal c2 and plug terminal d
2 are connected to each other by a lead wire 38b. The connector 27 and the connector 3
1 will be described. Figure5As shown in
The female housing 32 of the connector 27 is made of synthetic resin.
The female housing 32 is formed in a substantially rectangular cylindrical shape.
And the back is open. Inner wall of female housing 32
Is integrally formed with a partition plate 33 made of a synthetic resin.
ing. The partition plate 33 is in the left-right direction of the female housing 32.
And a horizontal plate 33a extending to
And a plurality of vertical plates 33b extending in the horizontal direction.
The vertical plate 33a and the vertical plate 33b are formed integrally with each other. The left and right edges of the horizontal plate 33a are female housings.
Are formed integrally with the inner surfaces of the left and right side walls of the
You. The vertical plates 33b are arranged at regular intervals at predetermined intervals.
The upper and lower edges of the vertical plate 33b are
It is formed integrally with the inner surface of the upper and lower side walls. Female mold
Part surrounded by the side wall of the housing 32 and the partition plate 33
Is a plurality (eight in this embodiment) of insertion holes 34.
The insertion hole 34 has an insertion tube for the connecting connector 31 described later.
35 is inserted. In each insertion hole 34
Accommodates the receptacle terminals a to h. Each
The receptacle terminals a to h are formed in a rectangular tube shape. What
Note that each of the receptacle terminals a to h is connected to the lead wire 28.
a to 28f, 6A and 6C are electrically connected. The male housing 3 of the connecting connector 31
Reference numeral 6 denotes a base made of a synthetic resin, and a base 37 and a front surface of the base 37.
A plurality of insertion tubes 35 extending forward from the
) And are integrally formed. Base 37 is square tubular
And its front and back surfaces are open. Each insert
The input cylinder 35 is formed in an elongated rectangular cylindrical shape,
The end opening communicates with the rear opening of the male housing 36.
are doing. At the front of the base 37, the insertion tubes 35 are spaced at predetermined intervals.
And the upper and lower tiers
The insertion tubes 35 are arranged side by side at predetermined intervals.
Each insertion tube 35 is inserted into the female housing 32.
It can be inserted into the hole 34. Also, the receptacle end of the connector 27
Insertion tube 35 of connecting connector 31 located opposite to children a to d
Inside, plug terminals a2 to d2 are accommodated. Plastic
The terminals a2 to d2 are formed in the shape of a square tube.
Is inserted into the insertion hole 34, the receptacle terminal a
The lug terminal a2 and the receptacle terminal b are plug terminals b2
And the receptacle terminal c is a plug terminal c2 and the receptacle terminal c2.
So that the ring terminals d contact the plug terminals d2, respectively.
Has become. Each of the plugs a2 to d2 has the lead
The lines 38a and 38b are electrically connected. FIG.5~ Figure7As shown in FIG.
7 on the upper surface of the upper side wall of the female housing 32.
Are integrally formed. Stock
Pa 39 is a pair of guide plates 3 arranged at a predetermined interval.
9a and retaining plate 3 extending between guide plate 39a
9b. On the other hand, the connection connector 31
On the upper surface of the upper side wall of the base 37, a locking member made of synthetic resin
40 are integrally formed. The latch 40 is a bifurcated horizontal U-shape
And a cantilevered shape from the distal end surface of the support portion 41.
And a claw portion 42 protruding from the main body. The tip of the claw 42 is oblique from the upper part to the lower part.
Is formed with a notched inclined portion 42a. And
The tip of the claw portion 42 is inclined with respect to the front end face of the retaining plate 39b.
The portion 42a slides rearward of the female housing 32.
So that it swings up and down against the elastic force of the resin.
Has become. Further, the support portion 41 is positioned near the center of the claw portion 42.
An engagement concave portion 42b is formed over the distal end surface of the contact hole. So
Then, the retaining plate 39b is engaged in the engaging recess 42b.
As a result, the stopper 40 is prevented from coming off from the stopper 39.
And the female housing 32 of the connector 27 and the connector
The male housing 36 of the connector 31 is held in a connected state.
It is supposed to be. FIG. 1 shows the connection connector.
27, a connecting connector 31 and a female connector 29 for power supply.
This shows a state where the power supply device is mounted on the ground fault relay 5. FIG.3As shown in FIG.
Is connected to the upper surface of the
The bull 8 is detachably connected. Connection cable 8
A male test connector 45 is provided at the tip.
The test connector 45 is provided with plug terminals e1 to h1.
ing. The test connector 45 is a connection connector for the ground fault relay 5.
It can be connected to the data 27. And ground fault
A ground fault test current is supplied from the
Flows to the terminal F1 via the terminal g1 and from the terminal F1.
Output to the zero-phase current transformer. Zero-phase current transformer
The test current flowing through the test line and passing through the test line
Input to the slave G1 and lead wire 28f, receptacle terminal
h, ground fault via plug terminal h1 and connection cable 8
It flows to the sex tester 7. The terminals W1 and W2 of the ground fault relay 5
Between the ground fault relay 5 and the zero-phase current transformer
Outputs a trip signal to the trip coil upon detection.
When a trip operation is performed, the ON operation follows this operation.
A contact to be made is connected. Terminal W1 is lead wire 2
8c, receptacle terminal f, plug terminal f1 and connection cable
Operation test (not shown) of the ground fault characteristic tester 7 through the cable 8
Connected to the test circuit. Terminal W2 is a lead wire 28d,
Via receptacle terminal e, plug terminal e1 and connection wire 8
To the operation test circuit of the ground fault characteristic tester 7 (not shown).
It is connected. The operation test circuit not shown is
Input the ON signal of the "a" contact and test the same ground fault characteristic as described above.
Of test current output from tester 7 to test line of zero-phase current transformer
From this test current output, the trip operation of the ground fault relay 5
Measure the time required to work and operate within the specified operation time
Is determined, and the ground fault relay 5 is operating normally.
Is displayed on the display unit provided in the ground fault characteristic tester 7
In both cases, the operation time is displayed on the liquid crystal display section 7a.
ing. The connection between the test connector 45 and the connector 27
The connection structure will be described. However, the connection connector 31
The description of the same components will be omitted.
In the following, the same reference numerals are given and only different configurations will be described. A test connector 45 has a plug in each insertion tube 35.
Lug terminals e1 to h1 are accommodated. Plug terminal e1
To h1 are the plug terminals a2 to d2 of the connector 31.
And have the same shape. And the insertion tube of the test connector 45
When 35 is inserted into the insertion hole 34 of the connector 27,
The plug terminals e1 to h1 are receptacles of the connector 27.
It can be inserted into the ring terminals a to h. At the time of this insertion
, Each receptacle terminal eh and each plug terminal e
1 to h1 are in contact with each other. The cable 8 excluding the insulating coating is
The end is crimped to the rear of the plug terminals e1 to h1.
Each of the plug terminals e1 to h1 is
Are electrically connected to each other. The ground fault characteristic tester 7 has a plug
Power supply cable 46 is detachably connected via 44
The power supply cable 46 has a male power connector at the end.
A connector 47 is provided. Male connector 47 for power supply
Are provided with plug terminals i1 and j1. And
The power male connector 47 is the female power connector of the ground fault relay 5.
It can be connected to the mold connector 29. Power supply female connector 29 and power supply male connector
The connection structure of the denter 47 will be described. However, the connection
The description of the same configuration as the connector 31 will be given.
Omitted, the same reference numerals are used, and only different configurations are described.
I will tell. FIG.6As shown in FIG.
The female housing 48 of No. 9 is made of a synthetic resin into a substantially square cylindrical shape.
The front and back of the female housing 48 are formed with openings.
Have been. The inner wall of the female housing 48 has a synthetic tree
A partition plate 49 made of fat is integrally formed. Female mold
Part surrounded by the side wall of the housing 48 and the partition plate 49
The minute becomes a plurality (two in this embodiment) of insertion holes 50.
The insertion hole 50 has a male connector 47 for power supply, which will be described later.
Is inserted. Each insertion hole
The receptacle terminals i and j are accommodated in 50.
You. Each receptacle terminal i, j is connected to the receptacle end.
It has the same shape as the children a to h. The power supply cable
The tip of the cable 46 excluding the insulating coating is plug terminals i1, j
1 at the rear. The male housing of the male connector 47 for power supply
The ring 52 is made of synthetic resin, and has a base 53 and the base 53.
A plurality of insertion tubes 51 extending forward from the front of
Are two pieces). Base 53 is square
It is formed in a cylindrical shape, and its front and back surfaces are open.
Each insertion tube 51 is formed in an elongated rectangular tube shape.
And the back side opening of the male housing 52
Communicating. Each insertion tube 51 is specified on the front of the base 53
They are arranged side by side at intervals. And each insertion tube 51
Insertion into the insertion hole 50 of the female housing 48 is enabled.
ing. Also, the receptacle of the female connector 29 for power supply
Power supply male connector 47 located opposite to the ring terminals i and j.
The plug terminals i1, j1 are accommodated in the insertion tube 51 of FIG.
ing. The plug terminals i1, j1 are connected to the connector 31.
Of the plug terminals a2 to d2. And
The insertion tube 51 of the male connector 47 for the power source is connected to the female connector for the power source.
When the plug terminal i1 is inserted into the insertion hole 50 of the
 , J1 are receptacles of the female connector 29 for power supply.
It can be inserted into the terminals i and j. At the time of this insertion
And the receptacle terminal i and the plug terminal i1,
Takuru terminal j and plug terminal j1 are in contact with each other.
The power supply cable is connected to the plug terminals i1 and j1.
Are connected electrically. The power supply
The end of the supply cable 46 excluding the insulation coating is a plug terminal
It is crimped to the rear part of i1 to j1. FIG. 1 shows an actual ground fault relay 5
Connector 27, connector 31 and female type for power supply
FIG. 4 is a diagram showing a state where the connector 29 is attached, and shows a normal state.
Show. In this case, the power supply female connector 29 is not used.
Therefore, each receptacle terminal i, j is covered with a blind lid M.
I'm being forced. Next, the ground fault relay configured as described above
5, a connector 27 for power and a female connector 29 for power supply;
Each male connector 31, 45, 47 and ground fault characteristics test
The operation when conducting a ground fault trip operation test using the
explain about. Perform a ground fault trip operation test
Before, the connection connector 27 of the ground fault relay 5 is a connection connector.
31 are connected. That is, the receptacle terminal a
Is a plug terminal a2, a lead wire 38a and a plug terminal b2.
Is connected to the receptacle terminal b. Also,
Receptacle terminal c is plug terminal c2, lead wire 38b
And connected to receptacle terminal d via plug terminal d2
Have been. First, a worker connects the connector 27 to the connector 27.
The male housing 36 of the connector 31 is removed. This
The tip of the claw part 42 is pressed downward when removing the
And figure7To bend as shown by a two-dot chain line. Claw part 42
Of the retaining plate 39b and the engagement recess 42
b is released, and the connection connector 27
Withdrawal of the denter 31 becomes possible. In this state, the connection
When the connector 31 is pulled out from the connector 27,
Insertion of the connection connector 31 from the insertion hole 34 of the connection connector 27
The receiving cylinder 35 is pulled out. At the same time, receptacle
The plug terminals a2 to d2 are pulled out from the terminals a to d.
As a result, each of the plug terminals a2 to d2 and the receptacle terminal
The connection with a to d is released. Next, the operator connects the ground fault relay 5 to the connection connector.
The test connector 45 is connected to the connector 27. This connection
When performing the test, the insertion hole 34 of the connector 27 is
The insertion tube 35 of the test connector 45 is inserted. With it
In the receptacle terminals e to h of the connector 27.
Are plug terminals e1 to h1 of the test connector 45, respectively.
Is inserted and connected to each of the receptacle terminals e to h.
By this connection, the receptacle terminal a and the receptacle
Between terminals b, and receptacle terminals c and receptacle terminals
The interval d is in an open state. Further, an insertion tube 35 is inserted into the insertion hole 34.
At this time, the inclined portion 42 a of the claw portion 42 is pulled out of the stopper 39.
The stopper plate 39b is slid on the front end surface. Due to this sliding,
The tip of the claw 42 is drawn against its elasticity.7To the two-dot chain line
Deflected downward as shown. For the lower surface of the retaining plate 39b
The upper surface of the claw 42 is brought into contact with the
The bent state is maintained. Then, the claw portion 42 is inserted into the insertion tube 35.
Is moved by a predetermined amount in the moving direction of the
Returns to the original position by force and engages with retaining plate 39b
The recess 42b is engaged. With this engagement, the ground fault relay
Test connector 45 is connected to 5 connector 27
Will be retained. After that, a pair of plugs
43 is connected. By this connection, the connector 27
Each receptacle terminal eh is connected to each connector of the test connector 45.
Lug terminals e1 to h1, connection cable 8 and plug 43
Operation test control circuit (not shown) of the ground fault characteristic tester 7
Connected to. Next, the female connector 2 for the power supply is
9, the blind lid M is removed, and the female connector 29 for the power supply is removed.
The male connector for power supply 47 is connected. Make this connection
In the insertion hole 50 of the female connector 29 for power supply,
The insertion tube 51 of the power supply male connector 47 is inserted. So
At the same time, the receptacle end of the female connector 29 for power supply
Plug terminals of the male connector 47 for the power supply
i1 and j1 are inserted, and both terminals i and i1 and both terminals j and j are inserted.
j1 are connected to each other. Further, an insertion tube 51 is inserted into the insertion hole 50.
At this time, the inclined portion 42 a of the claw portion 42 is pulled out of the stopper 39.
The stopper plate 39b is slid on the front end surface. Due to this sliding,
The tip of the claw 42 is drawn against its elasticity.7To the two-dot chain line
Deflected downward as shown. For the lower surface of the retaining plate 39b
The upper surface of the claw 42 is brought into contact with the
The bent state is maintained. Then, the claw portion 42 is inserted into the insertion tube 51.
Is moved by a predetermined amount in the moving direction of the
Returns to the original position by force and engages with retaining plate 39b
The recess 42b is engaged. By this engagement, female type for power supply
A power supply male connector 47 is connected to
Be held. Thereafter, the plug 44 is connected to the ground fault characteristic tester 7.
Connecting. With this connection, the power supply terminal P1 is connected to the lead wire.
30a, receptacle terminal of female connector 29 for power supply
i, plug terminal i1 of male connector 47 for power supply, power supply
Ground fault characteristics test via supply cable 46 and plug 44
Connected to the vessel 7. The power supply terminal P2 is connected to the lead wire 3
0b, receptacle terminal j of female connector 29 for power supply,
Plug terminal j1 of female connector 47 for power supply, for power supply
Ground fault characteristic tester 7 via cable 46 and plug 44
Connected to. Therefore, the control power supply of the ground fault characteristic tester 7 is
It can be secured more easily than the earth fault relay 5 to be tested.
You. Next, the ground fault trip operation is performed normally.
The test of whether or not is performed will be described. Power distribution in ventilated state
First, for the zero-phase current transformer attached to the wire,
A setting switch 54 provided on the ground fault relay 5 as a condition
And set the ground fault current setting tap to 0.2 A, for example.
Keep it. Also, a setting switch (not shown) of the ground fault characteristic tester 7 is used.
Switch to adjust the ground fault test current input value to ground fault current.
Set to 400% of the constant tap (8.0A). The operator does not show the ground fault characteristic tester 7 (not shown).
The test start switch is turned on. Then, the ground fault characteristic
A ground fault test current of 8.0 A from the tester 7
8, plug terminal g1, receptacle terminal g, lead wire 2
8e, terminal F1, test line via control line 6F and terminal F
Flows to And the ground fault test current passes through the zero-phase current transformer.
Terminal G, control line 6G, terminal G1, lead wire 28f,
Receptacle terminal h, plug terminal h1 and connection cable 8
Through the ground fault characteristic tester 7. At this time, the liquid crystal display of the ground fault characteristic tester 7
7a displays the ground fault test current value. Ground on zero-phase current transformer
When the ground test current passes, the ground fault test current is zero-phase
Is detected by the detector. And it was detected by the zero-phase current transformer.
The current of 19.4 mmA based on the ground fault test current is
It flows between the terminals D1 and E1 of the electric device 5. Then, ground fault relay
A control circuit (not shown) of the heater 5 is provided with a trip power supply (this embodiment).
In the example, 140V) is generated and output to the trip coil.
To the terminal A1 and the terminal C1.
Contact turns on the a contact connected in series with the terminal W1 and the terminal W2.
Make. At this time, needless to say, the connecting connector 31
And the test connector 45, the connection connector 2
Receptacle terminal that constitutes the trip circuit of switch 7
Circuits between a and b and between cd are open.
The switch does not open the trip.
There is no power outage on the road. Then, the operation test control of the ground fault characteristic tester 7 is performed.
After the circuit is operated, the zero-phase
The current detector detects the test current and this ground fault relay 5 operates.
The trip operation time until (a contact is closed)
measure. At this time, the liquid crystal display unit 7 of the ground fault characteristic tester 7
In a, the trip operation time is displayed. And work
The user reads the trip time, and the ground fault of the ground fault relay 5
It is determined whether the lip operation is performed normally. In addition,
If the trip operation time is within 0.1 to 0.2 seconds,
It is determined that the short trip operation has been performed normally. As described above, the ground fault trip operation test is completed.
After the operation, the operator connects the male connector for power supply to the female connector 29 for power supply.
The mold connector 47 is removed. In doing this removal
The tip of the claw portion 42 is pressed downward,7Two-dot chain line
Deflected as shown. By bending the claw 42
The engagement between the retaining plate 39b and the engagement recess 42b is released.
From the female connector 29 for power supply to the male connector 4 for power supply.
7 can be pulled out. In this state, the female connector for power supply
The power supply male connector 47 is pulled out from the connector 29.
And a power supply male connector through the insertion hole 50 of the female connector 29 for power supply.
The insertion tube 51 of the mold connector 47 is pulled out. With it
The receptacle terminals i, j to the plug terminals i1, j
1 is pulled out. As a result, each plug terminal i1, j1
Is disconnected from the receptacle terminals i and j. Subsequently, the operator connects the connector 27.
The test connector 45 is removed. To perform this removal
The tip of the claw part 42 is pressed downward,7Two-dot chain
Flex as shown by the line. By bending the claw 42
The engagement between the retaining plate 39b and the engagement recess 42b is released.
And pull out the test connector 45 from the connector 27
Becomes possible. In this state, test from connector 27
When the connector 45 is pulled out, the connection connector 27 is inserted.
Is the insertion tube 35 of the test connector 45 pulled out from the entrance hole 34?
It is. At the same time, plugs from receptacle terminals eh
The terminals e1 to h1 are pulled out. As a result, each plug
Connection between terminals e1 to h1 and receptacle terminals e to h
Is released. Thereafter, the operator connects to the connector 27.
The connection connector 31 is connected. To make this connection
The insertion hole 34 of the connection connector 27 has a connection connector
31 insertion cylinders 35 are inserted. At the same time,
Connector terminals a to d of the connector 27 have connection connectors.
Plug terminals a2 to d2 of the
You. As a result, each plug terminal a2 to d2 and each receptor
Are connected to terminal terminals a to d. Further, the connection connector 27 and the test connector
In the same manner as described for connection with the
To the stopper 39 of the connector 27 of the container 5
The locking tool 40 of the connector 31 is locked. With this lock
The connection connector 27 and the connection connector 31 maintain connection.
Is done. Then, each receptacle end of the connector 27
Each of the plug terminals a of the connector 312~ D2
Is connected. Therefore, an external connection cable 8 is connected.
Connector terminals a to h for connection
Provided within. At the same time, the connection cables 8
At the end, a test connector detachable from the connector 27
A denter 45 was provided. With this configuration, the test connector 45
When performing a ground fault operation test using
Just by connecting the test connector 45,
It is not necessary to connect the cables 8 to the terminals e to h one by one.
You. Therefore, the connection work as described above depends on the skill of the operator.
Connection work can be easily performed without connection
Thus, it is possible to eliminate a connection error of the connection cable 8.
Moreover, since the connection time of the connection cable 8 can be reduced,
The time required for the ground fault operation test can be reduced. In the non-grounding test, the connection connector
Connector 27 can be attached to and detached from the
Was. For this reason, the worker connects the lead wires 28a and 28b.
No trip coil is required in switch 3
Between the other end of the relay and the terminal A1 of the ground fault relay 5,
Between the common terminal of the relay and the terminal C1 of the ground fault relay 5
Can be short-circuited. The present invention is appropriately modified as follows.
Is also good. (1) A connection connector is provided on the front panel of the ground fault relay 5.
Nectar 27 is fixed, and the same as the above-mentioned embodiment is used at the time of non-test.
Short between the plugs a2 and b2 and between the plugs c2 and d2
Cover with an insulating cap with a shorting piece
To Similarly, the female connector 29 for the power
Fixed on the panel so that an insulating cap can be
You. (2) In the above embodiment, the test connector 45
Each plug terminal e1 to h1 is connected via a plurality of connection cables 8.
And connected to the ground fault characteristic tester 7,
Omitted, the test connector 45 is connected to the ground fault characteristic tester 7.
The structure may be directly attached. (3) The connector 27 is a male connector.
And make the test connector 45 a female terminal and
The connector 31 may be changed to a female terminal. (4) In the above embodiment, the test connector 45
Only plug terminals e1, f1, g1, h1 are arranged
Test data such as trip signal output as another test
If you want to load into a container,
Plug terminals corresponding to a and c are connected to the test connector 45.
Can be easily dealt with. (5) The connector 27 of the above embodiment is
Used for connection of short-circuit characteristics tester
Utilizing 27 receptacle terminals b and d, this receptacle
After the connector 31 is removed from the terminals b and d,
Easy connection by connecting the connector for
The insulation resistance of the lip signal circuit can be measured, and the insulation state can be measured.
It can also be used for monitoring. [0059] As described in detail above,BookAccording to the invention,
In the connection work between the terminal of the relay and the ground fault characteristic tester
Eliminates the work of attaching and removing individual control lines, and
Not only is simplified, but also connection errors are eliminated.Also, contact
Short-circuit the output and input terminals of the
Connect the control circuit between the
Monitor the ground fault of the distribution line.
be able to. In addition, switch trips during testing
The switching circuit is reliably shut off, and the switch
Unintentional opening is avoided, and the ground line can be
Only the relay can be tested.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a use state of a connector. FIG. 2 is a schematic description showing a male connector of a connection connector .
FIG. FIG. 3 is a male connector of a ground fault characteristic tester and a test connector.
FIG. 2 is a schematic explanatory view showing a male connector for power supply. FIG. 4 shows a state in which a switch and a ground fault relay are attached to a telephone pole .
FIG. FIG. 5 is an exploded view of the male connector and the female connector of the connection connector .
View. FIG. 6 shows a male connector for power supply and a female connector for power supply .
FIG. FIG. 7 shows a connection state of a male connector and a female connector.
Side view. [Description of Signs] 3 ... Switch, 7 ... Ground fault characteristic tester, 27 ... Connector, 31 ... Connector, 45 ... Test connector, ah
… Receptacle terminal (open circuit)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Terumitsu Takagi 1845 Tada Mansion, 2nd ward, Kitamachi, Takamatsu City No. 103 (72) Inventor Eiji Komiya 1st character small needle on Inuyama-shi, Aichi Energy Support Co., Ltd. (72) Inventor Hajime Ito 1 Kamikobari, Inuyama-shi, Aichi Energy Support Co., Ltd. (56) References JP-A-52-112745 (JP, A) JP-A-63-32880 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) H01H 33/59 H02H 3/02 H01R 29/00

Claims (1)

(57) [Claims 1] A detection signal from a zero-phase current transformer provided on a distribution line is input, and a trip signal is output to a trip means of a switch based on the detection result. A connector device in a ground fault relay provided with a control circuit for controlling a trip operation of the trip means, wherein
Connector that can be connected inside, the same connector and male and female
Connection connector and test connector
Connector, and the connection connector has an input terminal and an output terminal.
A plurality of pairs of terminals provided so that the power terminals and
Pairs to form an open circuit for the trip circuit.
Connected to the test line passing through the zero-phase current transformer
Terminal and the trip circuit on the ground fault relay side
To be connected to the signal output terminal following the output operation
And a pair of terminals.
When the connector is connected to the connector,
Short circuit the open circuit part and connect connector
When the is disconnected from the connector,
The open circuit section is configured to be opened, and
The test connector is connected to the connector
Maintaining the open state of the open circuit that constitutes the lip circuit
And a test circuit of a ground fault characteristic tester is connected to the test line.
Connector device in a ground fault relay configured as described above.