JP2011226861A - Electrical apparatus testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical apparatus testing device capable of preventing an electrical apparatus operation test from being performed with a test plug being inserted in a test terminal by mistake before a signal line is disconnected.SOLUTION: An apparatus for testing a protective relay is provided in a power system where a breaker is controlled on the basis of a signal sent from a protective relay through a trip circuit that is connected or disconnected by insertion or extraction of a lock terminal 120. The apparatus includes: a test terminal 20 connected to the protective relay; a test plug 40 for testing the protective relay while being inserted in the test terminal 20; an insertion part 66 where the lock terminal 120 is inserted; and an opening/closing mechanism 60 that closes the whole or a part of a plug insertion opening 24 when the lock terminal 120 is not inserted in the insertion part 66, and opens the whole or a part of the plug insertion opening 24 in response to an insertion of the lock terminal 120 in the insertion part 66.

Description

  The present invention relates to an apparatus for testing an electrical facility provided in a power system.

  As an apparatus for testing an electrical facility such as a protective relay provided in an electric power system, a device including a test terminal connected to the protective relay and a test plug inserted into the test terminal is known (for example, a patent Reference 1). In the test apparatus, with the test plug inserted into the test terminal, the protective relay is disconnected from the voltage circuit and the current circuit, and the test plug and the protective relay form a closed circuit. In this state, current and voltage are input from the test plug to the protective relay, and an operation test of the protective relay is performed.

  Here, when a current or voltage abnormality in the power system such as overcurrent or overvoltage is detected by the protective relay, a detection signal is output from the protective relay to the circuit breaker, and the circuit breaker is driven to interrupt the power line Is done. For this reason, when performing an operation test of the protective relay, it is necessary to prevent an unnecessary operation of the circuit breaker by interrupting the signal line between the protective relay and the circuit breaker.

JP 2007-147372 A

  However, it is conceivable to forget to interrupt the signal line. That is, before the signal line is cut off, the test plug is inserted into the test terminal and the operation test of the protective relay is performed, which may cause the breaker to operate unnecessarily.

  The present invention has been made in view of the above circumstances, and it is possible to prevent an electrical equipment from being erroneously inserted into a test terminal and performing an operation test of the electrical equipment before the signal line is interrupted. It is an object of the present invention to provide a test apparatus.

  In order to solve the above-described problem, the electrical equipment test apparatus according to the present invention transmits a signal corresponding to the state of the electrical equipment to be tested to another electrical equipment via a signal line, and the other electrical equipment The signal line is controlled based on a signal, and the signal line is connected in a state where a lock terminal is inserted, and the electric equipment to be tested is tested in a power system which is cut off in a state where the lock terminal is removed. A test terminal connected to the electrical equipment to be tested, a test plug used for testing the electrical equipment to be tested while being inserted into the test terminal, and the lock terminal inserted In the state where the insertion portion and the lock terminal are not inserted into the insertion portion, the whole or part of the insertion port of the test plug to the test terminal is closed, and the lock terminal inserted into the insertion portion Ri is actuated and a closing means for opening all or part of the insertion opening.

  In the electrical equipment testing apparatus, the opening / closing means may be stopped around the insertion port so that the opening / closing means can be stopped at a closed position where the insertion port is closed and moved between an open position where the insertion port is opened and the closed position. A supported opening / closing member; and a transmission part that moves the opening / closing member from the closed position to the open position by transmitting a force received from the lock terminal inserted into the insertion part to the opening / closing member. May be.

  In the test apparatus for electrical equipment, the insertion direction of the lock terminal into the insertion portion may be set to be orthogonal to the insertion direction of the test plug into the test terminal, and the opening and closing member is The test plug may be pivotable about an axis that is parallel to the direction of insertion of the test plug into the test terminal, and the transmission section may open and close the force of the lock terminal inserted into the insertion section. The cam may be converted into a force that rotates the member toward the open position.

  The test apparatus for electrical equipment is provided in the insertion portion so as to be detachable from the lock terminal, and prevents the lock terminal from coming out of the insertion portion by engaging with the lock terminal. There may be provided an escape preventing means for allowing the lock terminal to come out of the insertion portion by detaching from the lock terminal.

  In the electrical equipment testing apparatus, the electrical equipment to be tested may be a relay, and the other electrical equipment may be a circuit breaker controlled based on a signal according to a state of the relay. Good.

  According to the test apparatus for electrical equipment, it is possible to prevent the test operation of the electrical equipment from being erroneously inserted into the test terminal before the signal line is cut off.

It is a figure which shows schematic structure of the test device of the protection relay which concerns on one Embodiment. It is a sectional side view showing a test terminal. It is a perspective view which shows a test plug and a test terminal. It is a sectional side view which shows the test terminal in the state where the test plug was inserted. (A) is a front view which shows the opening / closing mechanism of the state which closed the plug insertion port, (B) is a side view which shows the opening / closing mechanism of the same state. (A) is a front view which shows the opening / closing mechanism of the state which opens a plug insertion port, (B) is a side view which shows the opening / closing mechanism of the same state. (A) is a front view which shows the opening-and-closing mechanism of the state which opened the plug insertion port, (B) is a side view which shows the opening-and-closing mechanism of the same state. It is a perspective view which shows the opening / closing mechanism which concerns on other embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a schematic configuration of a test apparatus 10 for a protective relay 100 according to an embodiment of the present invention. As shown in this figure, in a power system provided with a protective relay 100, a current transformer 104 and a circuit breaker 110 are provided on a power line 102. The current transformer 104 is connected to the protective relay 100 via the CT circuit 106, and the circuit breaker 110 is connected to the protective relay 100 via the trip circuit 112.

  The circuit breaker 110 is controlled to be interrupted based on a signal output from the protective relay 100 via the trip circuit 112. For example, when the protective relay 100 detects an overcurrent, a ground fault overcurrent, an overvoltage, a ground fault overvoltage, or the like, a detection signal (Trip signal) is output to the circuit breaker 110 via the trip circuit 112, and the circuit breaker 110 is Perform the shut-off action.

  The trip circuit 112 is provided with a lock terminal 120. The lock terminal 120 is a terminal that is inserted between the terminal on the protective relay 100 side and the terminal on the circuit breaker 110 side or pulled out from between these terminals. With the lock terminal 120 inserted between the terminals on both sides, the terminals on both sides are short-circuited. On the other hand, in a state where the lock terminal 120 is pulled out from between the terminals on both sides, the terminals on both sides are opened, and the trip circuit 112 is disconnected from the protective relay 100.

  The test apparatus 10 includes a test terminal 20 and a test plug 40. The test terminal 20 includes contacts 22 provided corresponding to the CT circuit 106 and the trip circuit 112. On the other hand, the test plug 40 includes a conductor 42 inserted into the contact 22.

  FIG. 2 is a side sectional view showing the test terminal 20. As shown in this figure, the test terminal 20 includes a box 26 having a plug insertion port 24, a contact 22 provided in the box 26, and a pair of upper and lower terminals 28 and 29 connected to the contact 22. I have. The box 26 is attached to a relay panel including the protective relay 100 so that the plug insertion port 24 is exposed from the front surface of the relay panel.

  The contact 22 includes a pair of upper and lower movable contact plates 30 and 31, a pair of upper and lower support conductors 32 and 33, and a pair of upper and lower relay contacts 34 and 35. The upper movable contact plate 30 and the relay contact 34 are electrically connected to the upper terminal 28 via the upper support conductor 32, and the lower movable contact plate 31 and the relay contact 35 are connected via the lower support conductor 33. And is connected to the lower terminal 29. As shown in the figure, in a state where the test plug 40 is not inserted into the test terminal 20, the upper relay contact 34 contacts the lower movable contact plate 31, and the lower relay contact 35 is the upper movable contact plate 30. Abut.

  That is, when the test plug 40 is not inserted into the test terminal 20, the terminal 28 and the terminal 29 are electrically connected by the support conductors 32 and 33, the movable contact plates 30 and 31, and the relay contacts 34 and 35.

  FIG. 3 is a perspective view showing the test plug 40 and the test terminal 20. As shown in this figure, the test plug 40 includes an insulating support 44, an insulating plate 46 protruding from the insulating support 44, and a plurality of conductors 42 attached to the insulating plate 46. Each conductor 42 includes conductor plates 48 and 49 with an insulating plate 46 sandwiched between them. That is, the upper and lower conductor plates 48 and 49 are insulated by the insulating plate 46.

  The test plug 40 includes a terminal 50 that protrudes from the insulating support 44 to the opposite side of the insulating plate 46, and a short-circuit piece 52 that is attached to and detached from the terminal 50. The terminal 50 has a configuration in which a contact point connected to the upper conductor plate 48 and a contact point connected to the lower conductor plate 49 are insulated. By attaching the short-circuit piece 52 to these contacts, the upper conductor plate 48 and the lower conductor plate 49 are electrically connected.

  FIG. 4 is a side sectional view showing a state in which the test plug 40 is inserted into the test terminal 20. As shown in this figure, when the test plug 40 is inserted into the test terminal 20, the conductor 42 is held between the upper and lower movable contact plates 30 and 31. In this state, the upper movable contact plate 30 and the lower relay contact 35 are not in contact with each other, and the lower movable contact plate 31 and the upper relay contact 34 are not in contact with each other. For this reason, in the state where the short-circuit piece 49 is removed from the terminal 50, the conduction between the upper terminal 28 and the lower terminal 29 is interrupted. On the other hand, in the upper body in which the short-circuit piece 49 is attached to the terminal 50, the upper terminal 28 and the lower terminal 29 are electrically connected.

  Next, the opening / closing mechanism 60 that opens and closes the plug insertion port 24 of the test terminal 20 will be described. As shown in FIG. 3, the opening / closing mechanism 60 is provided integrally with a bar 62 that opens and closes the plug insertion port 24, a casing 64 that supports the bar 62, an insertion portion 66 provided in the casing 64, and the bar 62. The cam 68 is provided.

  The bar 62 is a prismatic plate material, and the dimension is set so that at least a part of the bar 62 can cover the plug insertion opening 24. In addition, one end side (hereinafter referred to as a base end side) in the longitudinal direction of the bar 62 is formed in an arc shape so that the width gradually decreases toward one end portion (hereinafter referred to as a base end portion) in the longitudinal direction.

  The casing 64 is arranged on one end side in the longitudinal direction of the plug insertion port 24. The casing 64 is a rectangular columnar member whose longitudinal direction is the vertical direction, and is attached to the front surface of the relay panel so that the lower end portion of the casing 64 is positioned at the height of the plug insertion port 24. The casing 64 includes a lower accommodation portion 70, an insertion portion 66, and an upper accommodation portion 72. The lower housing part 70, the insertion part 66, and the upper housing part 72 are open to the plug insertion port 24 side.

  The lower accommodating portion 70 is a space formed on the lower end side of the casing 64 and accommodates the proximal end side of the bar 62. The insertion portion 66 and the upper storage portion 72 are spaces formed on the upper side of the lower storage portion 70. The insertion portion 66 and the upper housing portion 72 are arranged in this order from the front side to the back side in the direction in which the test plug 40 is inserted (hereinafter referred to as the plug insertion direction).

  The insertion portion 66 is a slit extending in the vertical direction and accommodates the lock terminal 120. A lower end portion of the insertion portion 66 is connected to the lower accommodation portion 70. A wide portion 74 wider than the upper and lower sides is formed at the center in the vertical direction of the insertion portion 66. The wide portion 74 opens to the near side of the casing 64 in the plug insertion direction.

  The side cross-sectional shape of the lock terminal 120 in a state of being inserted into the insertion portion 66 is similar to the side cross-sectional shape of the insertion portion 66, and the lock terminal 120 is between the lock terminal 120 and the insertion portion 66. There is a slight gap between the thickness direction and the vertical direction. The upper accommodating portion 72 is a space extending upward from the lower accommodating portion 70 and accommodates the bar 62.

  The cam 68 is provided integrally with the bar 62 on the base end side of the bar 62. The cam 68 is formed so as to protrude from the bar 62 toward the front side in the plug insertion direction, and has a cam surface 69.

  A shaft 76 is inserted through the base end side of the bar 62 and the cam 68. The shaft 76 is disposed in the lower housing portion 70 in parallel with the plug insertion direction. Further, both end portions of the shaft 76 are fixed to the lower portion of the casing 64. That is, the base end side of the bar 62 and the cam 68 are supported by the lower part of the casing 64 so as to be rotatable around an axis 76 parallel to the plug insertion direction.

  As shown in this figure, with the lock terminal 120 inserted into the insertion portion 66, the bar 62 lifts the other end side in the longitudinal direction (hereinafter referred to as the front end side) by the action of the lock terminal 120 and the cam 68. The plug insertion port 24 is opened.

  FIG. 5A is a front view showing the opening / closing mechanism 60 in a state where the plug insertion port 24 is closed by leveling the bar 62, and FIG. 5B is a side view showing the opening / closing mechanism 60 in the same state. FIG. As shown in these drawings, the lock terminal 120 includes a pair of upper and lower U-shaped conductor portions 122 and an insulating portion 124 provided between the pair of upper and lower conductor portions 122. Is formed in an E shape in front view. Further, the thickness dimension of the insulating part 124 is set larger than the thickness dimension of the conductor part 122. Here, in a state where the plug insertion port 24 is closed by the bar 62, the lock terminal 120 is in a state of being detached from the insertion portion 66 as shown in the figure.

  Further, as shown in FIG. 5B, since the insertion portion 66 is formed with a wide portion 74 wider than the upper and lower sides at the central portion in the vertical direction, the insulating portion 124 can be inserted into the wide portion 74. The conductor portion 122 can be inserted on both the upper and lower sides of the insertion portion 66.

  As shown in FIG. 5A, in a state where the lock terminal 120 is not inserted into the insertion portion 66, one end side in the longitudinal direction of the bar 62 contacts the bottom surface of the lower accommodation portion 70. In this state, the bar 62 descends by its own weight and becomes horizontal, and closes the plug insertion port 24.

  The cam surface 69 of the cam 68 is located in the lower housing part 70. The cam surface 69 is a surface that inclines toward the base end toward the upper side of the bar 62 in a state where the bar 62 is horizontal. Further, the upper end portion of the cam surface 69 is located in the insertion path of the lower conductor portion 122 of the lock terminal 120.

  6A is a front view showing the opening / closing mechanism 60 in a state where the plug insertion opening 24 is opened, and FIG. 6B is a side view showing the opening / closing mechanism 60 in the same state. As shown in these drawings, when the lock terminal 120 is removed from the trip circuit 112 and inserted into the insertion portion 66, the insulating portion 124 is inserted into the wide portion 74, and the upper and lower conductor portions 122 are connected to the upper and lower sides of the insertion portion 66. Insert into.

  When the lock terminal 120 is inserted into the insertion portion 66, the lower end portion of the lower conductor portion 122 contacts the upper end portion of the cam surface 69. At this time, a force in the horizontal direction (insertion direction of the lock terminal 120) acts on the cam surface 69 from the lower conductor portion 122, and the horizontal force is converted into an upward rotational force by the cam surface 69. As a result, the bar 62 rotates in the direction in which the tip end is lifted (counterclockwise direction in the figure).

  FIG. 7A is a front view showing the opening / closing mechanism 60 in a state where the plug insertion opening 24 is opened, and FIG. 6B is a side view showing the opening / closing mechanism 60 in the same state. As shown in these drawings, when the lock terminal 120 is inserted to the deepest part of the insertion portion 66, the bar 62 is rotated to a position that does not overlap with the plug insertion port 24 in the plug insertion direction. As a result, the plug insertion port 24 is opened, and the test plug 40 can be inserted into the test terminal 20.

  After the test plug 40 is inserted into the test terminal 20 and the operation test of the protective relay 100 is performed, it is preferable that the test plug 40 is pulled out from the test terminal 20 and the lock terminal 120 is pulled out from the insertion portion 66. After that, it is preferable to attach the lock terminal 120 to the trip circuit 112. As a result, the bar 62 descends by its own weight (rotates in the clockwise direction in the figure) and closes the plug insertion port 24 as described above. That is, the state returns to the state of FIGS.

  Here, in a state where the lock terminal 120 is attached to the trip circuit 112, the trip circuit 112 is connected to the protective relay 100 and the circuit breaker 110. When it is assumed that the test plug 40 can be inserted into the test terminal 20 in this state, an operation test in which an overcurrent or a ground fault overcurrent is input to the protective relay 100 by the test plug 40 with the protective relay 100 connected to the circuit breaker 100 is performed. Can be implemented. In this case, the circuit breaker 110 unnecessarily performs a circuit breaking operation.

  However, in the test apparatus 10 according to the present embodiment, when opening the opening / closing bar 62 of the plug insertion port 24, the lock terminal 120 that must be inserted into the insertion portion 66 must be pulled out of the trip circuit 112. Accordingly, it is possible to prevent the test plug 40 from being inserted into the test terminal 20 in a state where the lock terminal 120 is mounted on the trip circuit 112, and unnecessary circuit breaker 110 disconnection operation (when the protective relay 100 is operated) That is, a power failure) can be prevented.

  Further, in the test apparatus 10 according to the present embodiment, the bar 62 can be stopped at the position where the plug insertion port 24 is closed, and can be moved between the closing position and the opening position on the side of the plug insertion port 24. It is supported. Further, the cam 68 transmits the force received from the lock terminal 120 inserted into the insertion portion 66 to the bar 62, thereby moving the bar 62 from the position where the plug insertion port 24 is closed to the position where it is opened.

  Thus, in a state where the lock terminal 120 is not inserted into the insertion portion 66, the plug insertion port 24 can be opened by closing the plug insertion port 24 with the bar 62 and inserting the lock terminal 120 into the insertion portion 66. .

  Further, in the test apparatus 10 according to the present embodiment, the insertion direction of the lock terminal 120 into the insertion portion 66 is set to be orthogonal to the insertion direction of the test plug 40 into the test terminal 20. Further, the bar 62 is rotatable around an axis 76 that is parallel to the direction in which the test plug 40 is inserted into the test terminal 20. Further, the cam 68 converts the force of the lock terminal 120 inserted into the insertion portion 66 into a force that rotates the bar 62 to the open side.

  That is, in the opening / closing mechanism 60 of the test apparatus 10 according to the present embodiment, the bar 62 rotates along the front surface of the relay panel outside the plug insertion port 24, and the lock terminal 120 also extends along the front surface of the relay panel. Inserted and removed. Further, the cam 68 may be protruded from the bar 62 to the opposite side of the relay panel. As a result, the entire opening / closing mechanism 60 can be disposed outside the relay panel, so that it is not necessary to provide a special structure in the relay panel in order to install the opening / closing mechanism 60. Therefore, the opening / closing mechanism 60 can be attached to an existing relay panel.

  Further, in the opening / closing mechanism 60, the wide portion 74 of the insertion portion 66 opens toward the front side in the plug insertion direction. For this reason, it can be confirmed that the lock terminal 120 is inserted into the insertion portion 66. Further, the lock terminal 120 inserted into the insertion portion 66 can be removed from the insertion portion 66.

  FIG. 8 is a perspective view showing an opening / closing mechanism 160 according to another embodiment. As shown in this figure, the opening / closing mechanism 160 includes a pull-out prevention mechanism 80 that prevents or allows the lock terminal 120 inserted into the insertion portion 66 from slipping out. The pull-out prevention mechanism 80 includes a hinge 82 provided at an end on the front side in the terminal insertion direction at the lower edge of the wide portion 74 on the opening side, and a bar 84 supported by the hinge 82 at one end in the longitudinal direction. ing.

  The hinge 82 is rotatable around an axis parallel to the insertion direction of the lock terminal 120, and the bar 84 extends from the hinge 82 toward the outer diameter of the hinge 82. As a result, the bar 84 is supported by the end on the near side in the terminal insertion direction at the lower edge of the opening of the wide portion 74 so as to be rotatable about an axis parallel to the insertion direction of the lock terminal 120. Yes.

  The other end in the longitudinal direction of the bar 84 (hereinafter referred to as the tip) extends to the lower edge on the opposite side of the opening of the wide portion 74. As a result, as shown by the solid line in the figure, the tip end portion of the bar 84 is held by the lower edge portion on the opposite side of the opening of the wide portion 74 in a state where the bar 84 is tilted horizontally. Further, as indicated by a broken line in the figure, the whole of the bar 84 fits in the opening of the wide portion 74 in a state where the bar 84 stands vertically.

  Therefore, when the bar 84 is set up vertically, the entrance of the insertion portion 66 is opened, so that the lock terminal 120 can be inserted into the insertion portion 66 or the lock terminal 120 can be extracted from the insertion portion 66. is there. When the bar 84 is tilted horizontally, the inlet of the insertion portion 66 is closed by the bar 84, and the bar 84 is engaged with the front side of the lock terminal 120 in the insertion direction. For this reason, it is possible to prevent the lock terminal 120 from coming out of the insertion portion 66.

  Here, the lock terminal 120 inserted into the insertion portion 66 supports the bar 84 in a state where the tip portion is lifted. For this reason, a force in the direction of pulling out due to the weight of the bar 84 acts on the lock terminal 120 inserted into the insertion portion 66.

  However, in the opening / closing mechanism 160 according to the present embodiment, the bar 84 in a horizontally tilted state is engaged with the front side in the insertion direction of the lock terminal 120, thereby preventing the lock terminal 120 from coming out of the insertion portion 66. The Therefore, regardless of the weight of the bar 84, the lock terminal 120 can be prevented from coming out of the insertion portion 66, and the bar 84 can be prevented from descending.

  As mentioned above, although the form for implementing this invention was demonstrated, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and equivalents thereof are also included in the present invention. For example, in the above-described embodiment, the electrical equipment to be tested is described as the protective relay 100, and the electrical equipment controlled according to the state of the electrical equipment to be tested is described as the circuit breaker 110. However, the electrical equipment to be tested includes a remote monitoring control device and the like, and the electrical equipment controlled according to the state of the electrical equipment to be tested includes a transformer and a current transformer.

  In the above embodiment, the circuit connected or cut off by the test plug 40 is the trip circuit 112 and the CT circuit 106. However, the circuit may be appropriately changed, for example, by adding a PT circuit connected to a transformer.

  Moreover, in the said embodiment, the mechanism which opens and closes the plug insertion port 24 was demonstrated taking the example of the opening / closing mechanism 60 provided with the bar 62 which can be rotated by making a base end side into a fulcrum. However, as a mechanism for opening and closing the plug insertion port 24, other mechanisms such as an opening and closing mechanism including a door that is pivotably suspended with the upper side as a fulcrum are also exemplified.

  Further, in the above-described embodiment, the cam 68 is described as an example of the transmission unit that transmits the force of the lock terminal 120 inserted into the insertion unit 66 to the bar 62. However, other mechanisms such as a link mechanism may be used as the transmission unit.

  Furthermore, in the above-described embodiment, the configuration including the cam 68 that transmits the force of the lock terminal 120 inserted into the insertion portion 66 by the bar 62 has been described as an example. However, a configuration in which the force of the lock terminal 120 inserted into the insertion portion 66 directly acts on the bar 62 to move the bar 62 is also possible.

10 test device, 20 test terminal (test terminal), 22 contacts, 24 plug insertion port (insertion port), 26 box, 28, 29 terminal, 30, 31 movable contact plate, 32, 33 support conductor, 34, 35 relay Contact, 40 Test plug (Test plug), 42 Conductor, 44 Insulating support, 46 Insulating plate, 48, 49 Conductor plate, 50 Terminal, 52 Short-circuit piece, 60 Opening / closing mechanism (opening / closing means), 62 Bar (opening / closing member), 64 Casing, 66 Insertion part, 68 Cam (Transmission part), 69 Cam surface, 70 Lower accommodation part, 72 Upper accommodation part, 74 Wide part, 76 Shaft, 80 Escape prevention mechanism (Escape prevention means), 82 Hinge, 84 Bar, 100 Protection relay (electrical equipment to be tested), 102 Power line, 104 Current transformer, 106 CT circuit, 110 Circuit breaker (Other electric equipment) , 112 trip circuit (signal line), 120 lock the terminal, 122 a conductor portion, 124 an insulating portion

Claims (5)

A signal corresponding to the state of the electrical equipment to be tested is transmitted to another electrical equipment via a signal line, the other electrical equipment is controlled based on the signal, and a lock terminal is inserted into the signal line. In the electric power system that is connected in a state where the lock terminal is removed and is disconnected, the apparatus for testing the electrical equipment to be tested,
A test terminal connected to the electrical equipment to be tested;
A test plug used for testing the electrical equipment to be tested in a state inserted in the test terminal;
An insertion portion into which the lock terminal is inserted;
In a state where the lock terminal is not inserted into the insertion portion, the insertion port of the test plug to the test terminal is completely or partially closed, and the insertion port is operated by the lock terminal inserted into the insertion portion. Opening and closing means for opening all or part of
An electrical equipment testing apparatus comprising: The opening / closing means includes
An opening and closing member supported around the insertion port so that the insertion port can be stopped at a closed position to close the insertion port and move between an open position for opening the insertion port and the closed position;
A transmission part that moves the opening / closing member from the closed position to the open position by transmitting a force received from the lock terminal inserted into the insertion part to the opening / closing member;
The electrical equipment testing apparatus according to claim 1. The insertion direction of the lock terminal to the insertion portion is set to be orthogonal to the insertion direction of the test plug to the test terminal,
The opening and closing member is rotatable about an axis parallel to a direction in which the test plug is inserted into the test terminal;
The electrical equipment test apparatus according to claim 2, wherein the transmission unit is a cam that converts a force of the lock terminal inserted into the insertion unit into a force that rotates the opening / closing member toward the open position.   The insertion portion is detachably provided with respect to the lock terminal, and prevents the lock terminal from coming out of the insertion portion by engaging with the lock terminal, and by detaching from the lock terminal, the The electrical equipment testing device according to any one of claims 1 to 3, further comprising a slip-out preventing unit that allows the lock terminal to slip out from the insertion portion. The electrical equipment to be tested is a relay,
The said other electrical installation is a circuit breaker controlled based on the signal according to the state of the said relay, The testing apparatus of the electrical installation of any one of Claim 1- Claim 4.

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