CN210744593U - Electrical interlocking circuit of inlet wire cabinet, electrical interlocking device of inlet wire cabinet and PT cabinet - Google Patents
Electrical interlocking circuit of inlet wire cabinet, electrical interlocking device of inlet wire cabinet and PT cabinet Download PDFInfo
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- CN210744593U CN210744593U CN201921598770.5U CN201921598770U CN210744593U CN 210744593 U CN210744593 U CN 210744593U CN 201921598770 U CN201921598770 U CN 201921598770U CN 210744593 U CN210744593 U CN 210744593U
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Abstract
The utility model belongs to the technical field of the PT cabinet, especially, relate to an inlet wire cabinet electrical interlocking circuit, inlet wire cabinet electrical interlocking device and PT cabinet, through set up travel switch between miniature circuit breaker and vacuum circuit breaker, make the ground connection handcart interlock with the inlet wire cabinet through the on-off state of control travel switch, the interlocking of having solved current ground connection handcart and inlet wire cabinet adopts the on-off return circuit that the operating position of auxiliary relay extension ground connection handcart comes interlocking high-pressure inlet wire cabinet usually, there is the problem of great potential safety hazard.
Description
Technical Field
The utility model relates to a PT cabinet technical field especially relates to an inlet wire cabinet electrical interlocking circuit, inlet wire cabinet electrical interlocking device and PT cabinet.
Background
At present, a high-voltage grounding handcart is usually in a form of a bus PT cabinet (voltage transformer cabinet), the PT cabinet is pushed in during normal work, and when grounding maintenance is needed, the PT cabinet is pushed out, and the grounding handcart is pushed in after replacement. However, the existing interlocking of the grounding handcart and the incoming line cabinet generally adopts an intermediate relay to expand the working position of the grounding handcart to interlock the switching-on and switching-off loop of the high-voltage incoming line cabinet, so that great potential safety hazard exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inlet wire cabinet electrical interlocking circuit, inlet wire cabinet electrical interlocking device and PT cabinet aim at solving the interlocking of current ground connection handcart and inlet wire cabinet and adopt the operating position of auxiliary relay extension ground connection handcart to come the separating brake return circuit that closes of chain high-pressure inlet wire cabinet usually, have the problem of great potential safety hazard.
The embodiment of the utility model provides an inlet wire cabinet electric interlocking circuit is connected with alternating current power supply, inlet wire cabinet electric interlocking circuit includes: the device comprises a miniature circuit breaker, a first key switch, a second key switch, a travel switch and a vacuum circuit breaker;
the first input end of the miniature circuit breaker is connected with the first end of the alternating current power supply, the second input end of the miniature circuit breaker is connected with the second end of the alternating current power supply, the first output end of the miniature circuit breaker, the first end of the first key switch, the first end of the second key switch and the first end of the normally open auxiliary contact of the travel switch are connected in common, the second end of the normally open auxiliary contact of the travel switch and the second end of the second key switch are connected with the first switching signal end of the vacuum circuit breaker, the second end of the first key switch is connected with the first end of the normally closed auxiliary contact of the travel switch, the second end of the normally closed auxiliary contact of the travel switch is connected with the first closing signal end of the vacuum circuit breaker, and a second switching-off signal end of the vacuum circuit breaker and a second switching-on signal end of the vacuum circuit breaker are connected to a second output end of the miniature circuit breaker in a sharing mode.
Optionally, the vacuum circuit breaker includes: the circuit comprises a first rectifier bridge, a second rectifier bridge, an anti-tripping relay, a current-limiting resistor, a trip coil, a closing coil and a vacuum circuit breaker auxiliary switch;
the first input end of the first rectifier bridge is connected with the second end of the normally closed contact of the travel switch, the second input end of the first rectifier bridge is connected with the second output end of the miniature circuit breaker, the first output end of the first rectifier bridge is connected with the first end of the first normally open auxiliary contact of the vacuum circuit breaker auxiliary switch and the first end of the auxiliary contact of the anti-tripping relay, the second end of the first normally open auxiliary contact of the vacuum circuit breaker auxiliary switch, the second end of the auxiliary contact of the anti-tripping relay and the first end of the current limiting resistor are connected in common, the second end of the current limiting resistor is connected with the first end of the coil of the anti-tripping relay, the second output end of the first rectifier bridge and the first end of the closing coil are connected in common, and the second end of the closing coil is connected with the first end of the first auxiliary normally closed contact of the vacuum circuit breaker auxiliary switch, the second end of the first normally closed auxiliary contact of the vacuum circuit breaker auxiliary switch is connected with the first end of the second normally closed auxiliary contact of the vacuum circuit breaker auxiliary switch, the second end of the second normally closed auxiliary contact of the auxiliary switch of the vacuum circuit breaker is connected with the third end of the auxiliary contact of the anti-tripping relay, the first input end of the second rectifier bridge is connected with the second end of the normally open contact of the travel switch, the second input end of the second rectifier bridge is connected with the first end of a second normally open contact of the auxiliary switch of the vacuum circuit breaker, the second end of the second normally open contact of the auxiliary switch of the vacuum circuit breaker is connected with the second output end of the miniature circuit breaker, and the first output end of the second rectifier bridge is connected with the first end of the tripping coil, and the second output end of the second rectifier bridge is connected with the second end of the tripping coil.
Optionally, the vacuum circuit breaker further comprises a microswitch, and the microswitch is arranged between the second end of the second normally closed auxiliary contact of the auxiliary switch of the vacuum circuit breaker and the third end of the auxiliary contact of the anti-tripping relay.
Optionally, the vacuum circuit breaker further includes an aviation socket, the aviation socket includes four sockets, and the four sockets are respectively arranged in the first switching signal end, the second switching signal end, the first closing signal end and the second closing signal end of the vacuum circuit breaker.
Optionally, the aviation socket is of the type CZ-58.
Optionally, the model of the travel switch is LXW 20-11.
Optionally, the model of the miniature circuit breaker is iC 65N-2P.
The embodiment of the application also provides an inlet wire cabinet electrical interlocking device, including:
a first AC power supply port;
a second AC power port;
the inlet wire cabinet electric interlocking circuit is connected with the first alternating current power supply port and the second alternating current power supply port respectively; and
and the grounding handcart is used for controlling the switching state of the travel switch.
The embodiment of the application also provides a PT cabinet, which comprises a cabinet body, wherein the cabinet body is internally provided with the incoming line cabinet electrical interlocking circuit.
The utility model provides an inlet wire cabinet electrical interlocking circuit, inlet wire cabinet electrical interlocking device and PT cabinet, through set up travel switch between miniature circuit breaker and vacuum circuit breaker for the earthing handcart interlocks through control travel switch's on-off state and inlet wire cabinet, and the operating position that has solved current earthing handcart and inlet wire cabinet adopted intermediate relay extension earthing handcart usually comes the switching-on/off return circuit of interlocking high-pressure inlet wire cabinet, has the problem of great potential safety hazard.
Drawings
Fig. 1 is a schematic structural diagram of an electrical interlock circuit of a line inlet cabinet according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another electrical interlock circuit of the inlet cabinet according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a PT cabinet provided by an embodiment of the present application;
fig. 4 is a schematic diagram of a PT hand truck pushing into a PT cabinet provided by an embodiment of the present application;
fig. 5 is a schematic diagram of a grounded handcart pushed into a PT cabinet according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Fig. 1 is the structural schematic diagram of the inlet wire cabinet electrical interlock circuit that an embodiment of the present invention provides, as shown in fig. 1, the inlet wire cabinet electrical interlock circuit in this embodiment is connected with an ac power supply, the inlet wire cabinet electrical interlock circuit includes: the miniature circuit breaker QF, the first key switch 2HA, the second key switch 2TA, the travel switch and the vacuum circuit breaker 10; the first input end 1 of the miniature circuit breaker QF is connected with the first end L of the alternating current power supply, the second input end 3 of the miniature circuit breaker QF is connected with the second end N of the alternating current power supply, the first output end 2 of the miniature circuit breaker QF, the first end of the first key switch 2HA, the first end of the second key switch 2TA and the first end of the normally open auxiliary contact XC2 of the travel switch are connected together, the second end of the normally open auxiliary contact XC2 of the travel switch and the second end of the second key switch 2TA are connected with the first switching signal end 12 of the vacuum circuit breaker 10, the second end of the first key switch 2HA is connected with the first end of the normally closed auxiliary contact XC1 of the travel switch, the second end of the normally closed auxiliary contact XC1 of the travel switch is connected with the first switching signal end 11 of the vacuum circuit breaker, and a second switching-off signal end 14 of the vacuum circuit breaker and a second switching-on signal end 13 of the vacuum circuit breaker are connected to a second output end 4 of the miniature circuit breaker in common.
In the embodiment, a travel switch is arranged between a miniature circuit breaker QF and a vacuum circuit breaker 10, so that a grounding handcart is interlocked with a wire inlet cabinet by controlling the switching state of the travel switch, a normally open auxiliary contact XC2 of the travel switch is connected in parallel with a second key switch 2TA and is connected in series with a first brake signal end 12 of the vacuum circuit breaker 10, a normally closed auxiliary contact XC1 of the travel switch is connected in series with a first key switch 2HA, when the grounding handcart is not in contact with the travel switch, no current flows into the first brake signal end 12 and the second brake signal end 14 of the vacuum circuit breaker 10, the normally closed auxiliary contact XC1 of the travel switch is in a closed state, the first brake signal end 11 and the second brake signal end 13 of the vacuum circuit breaker 10 are conducted, when the grounding handcart is in contact with the travel switch and the switching state of the travel switch is changed, the normally open auxiliary contact XC2 of the travel switch is closed, normally closed auxiliary contact XC1 breaks, and the tripping circuit in vacuum circuit breaker 10 is switched on and the auxiliary contact in the closing circuit breaks at this moment, thereby breaking the closing circuit of the incoming line cabinet and avoiding the potential safety hazard caused by the fault of the intermediate relay.
In one embodiment, the miniature circuit breaker QF is mainly used for line protection in the environments of overload, short circuit, overcurrent, voltage loss, undervoltage, grounding, leakage and the like of a line, for example, when an alternating voltage signal provided by an alternating current power supply is in overvoltage, the overvoltage protection is triggered, an armature of an overcurrent release is attracted to enable a free tripping mechanism to act, a main contact breaks a main circuit, the first input end 1 and the first output end 2 are disconnected, and the second input end 3 and the second output end 4 are disconnected.
In one embodiment, the first key switch 2HA HAs a model number LA 38-11R, and the second key switch 2TA HAs a model number LA 38-11G.
In one embodiment, the vacuum interrupter 10 may be an existing vacuum interrupter switch, which may be of the type ZW32, ZW32-24, ZW20, ZN28, ZN73, ZN12, ZN23, ZN85, etc.
In one embodiment, referring to fig. 2, the vacuum interrupter 10 includes: the device comprises a first rectifier bridge V1, a second rectifier bridge V2, an anti-tripping relay, a current-limiting resistor R0, a tripping coil TQ, a closing coil HQ and an auxiliary switch of the vacuum circuit breaker; the first input end of the first rectifier bridge V1 is connected with the second end of the normally closed contact XC1 of the travel switch, the second input end of the first rectifier bridge V1 is connected with the second output end 4 of the miniature circuit breaker QF, the first output end of the first rectifier bridge V1 is connected with the first end of the first normally open auxiliary contact HK1 of the vacuum circuit breaker auxiliary switch and the first end 5 of the auxiliary contact KO2 of the anti-jump relay, the second end of the first normally open auxiliary contact HK1 of the vacuum circuit breaker auxiliary switch, the second end 7 of the auxiliary contact KO2 of the anti-jump relay and the first end of the current limiting resistor R0 are connected in common, the second end of the current limiting resistor R0 is connected with the first end of the coil KO1 of the anti-jump relay, the second end of the coil KO1 of the anti-jump relay, the second output end of the first rectifier bridge V1 and the first end of the closing coil HQ are connected in common, the second end of the switching-on coil HQ is connected with the first end of the first normally closed auxiliary contact HK2 of the auxiliary switch of the vacuum circuit breaker, the second end of the first normally closed auxiliary contact HK2 of the auxiliary switch of the vacuum circuit breaker is connected with the first end of the second normally closed auxiliary contact HK3 of the auxiliary switch of the vacuum circuit breaker, the second end of the second normally closed auxiliary contact HK3 of the auxiliary switch of the vacuum circuit breaker is connected with the third end 6 of the auxiliary contact KO of the anti-tripping relay, the first input end of the second rectifier bridge V2 is connected with the second end of the normally open contact XC2 of the travel switch, the second input end of the second rectifier bridge V2 is connected with the first end of the second normally open contact HK4 of the auxiliary switch of the vacuum circuit breaker, the second end of the second normally open contact HK4 of the auxiliary switch of the vacuum circuit breaker is connected with the second output end 4 of the miniature circuit breaker QF, a first output of the second rectifier bridge V2 is connected to a first end of the trip coil TQ, and a second output of the second rectifier bridge V2 is connected to a second end of the trip coil TQ.
In this embodiment, when the grounding handcart does not act, the closing circuit is switched on, the first rectifier bridge V1 rectifies the alternating-current signal to obtain a direct-current signal, the closing coil HQ is powered on, the first normally closed auxiliary contact HK2 and the second normally closed auxiliary contact HK3 are closed, the coil KO1 of the anti-tripping relay is powered on, the auxiliary contact KO2 of the anti-tripping relay is connected to the second end 7, and when the coil KO1 of the anti-tripping relay is not powered on, the auxiliary contact KO2 of the discharging relay is connected to the third end 6.
In this embodiment, when the grounding handcart contacts with the travel switch, and the on-off state of the travel switch is changed, at this time, the normally open auxiliary contact XC2 of the travel switch is closed, the normally closed auxiliary contact XC1 is disconnected, at this time, the tripping circuit in the vacuum circuit breaker 10 is switched on, the second rectifier bridge V2 carries out rectification processing on the alternating current signal to obtain a direct current signal, the tripping coil TQ is electrified, the second normally open contact HK4 is closed, the first normally closed auxiliary contact HK2 and the second normally closed auxiliary contact HK3 are disconnected, the auxiliary contacts in the switching-on circuit are disconnected, so that the switching-on circuit of the incoming line cabinet is disconnected, and therefore the potential safety hazard caused by the fault of the intermediate relay is avoided.
In one embodiment, the vacuum circuit breaker further comprises a micro switch SP1, the micro switch SP1 being provided between the second end of the second normally closed auxiliary contact HK3 of the vacuum circuit breaker auxiliary switch and the third end of the auxiliary contact KO2 of the anti-trip relay. In this embodiment, the microswitch SP1 is closed after the energy storage is completed.
In one embodiment, the vacuum circuit breaker 10 further includes an aviation socket, which includes four sockets XO1, XO2, XO3 and XO4, and the four sockets XO1, XO2, XO3 and XO4 are respectively disposed at the first switching signal terminal 11, the second switching signal terminal 13, the first switching signal terminal 12 and the second switching signal terminal 14 of the vacuum circuit breaker 10.
In this embodiment, the aviation socket is used for carrying out secondary physical isolation with vacuum circuit breaker when vacuum circuit breaker overhauls, avoids overhauing the in-process because the maloperation leads to the electric shock accident. Wherein, aviation socket XO1 sets up in vacuum circuit breaker 10's first combined floodgate signal end 11, aviation socket XO 1's both ends are connected with first input of first rectifier bridge V1 and travel switch's normally closed contact XC 1's second end respectively, aviation socket XO2 sets up in vacuum circuit breaker 10's second combined floodgate signal end 13, aviation socket XO 2's both ends are connected with first rectifier bridge V1's second input and miniature circuit breaker QF's second output 4 respectively, aviation socket XO3 sets up in vacuum circuit breaker 10's first branch floodgate signal end 12, aviation socket XO 3's both ends are connected with travel switch's normally open contact XC 2's second end and second rectifier bridge V2's first input respectively, aviation socket XO4 sets up in vacuum circuit breaker 10's second branch brake signal end 14, aviation socket 4's both ends are connected with vacuum circuit breaker auxiliary switch's second normally open contact HK 4's second end and miniature QF 4 second output respectively.
In one embodiment, the aircraft socket is of the type CZ-58.
In one embodiment, the travel switch is model number LXW 20-11.
In one embodiment, the miniature circuit breaker is iC 65N-2P.
In one embodiment, an embodiment of the present application further provides an inlet cabinet electrical interlock device, including: a first AC power supply port; a second AC power port; the inlet wire cabinet electric interlocking circuit is connected with the first alternating current power supply port and the second alternating current power supply port respectively; and the grounding handcart is used for controlling the switching state of the travel switch.
In this embodiment, inlet wire cabinet electrical interlock circuit locates in the PT cabinet, travel switch sets up in the PT cabinet, this travel switch has one and opens one and closes the auxiliary point, in application, push away the PT cabinet through PT handcart and ground connection handcart and carry out work, wherein, the PT handcart is the same with the appearance of ground connection handcart, and set up a support on the ground connection handcart, thereby this support can push up travel switch at ground connection handcart operating position department and change the auxiliary point state of travel switch, thereby parallelly connected inlet wire cabinet tripping circuit with the closing point of auxiliary point, the opening cluster is at inlet wire cabinet combined floodgate circuit.
In this embodiment, when normal work, the PT handcart is because there is not the installing support, the PT handcart top can not reach travel switch this moment, there is not any influence to the inlet wire cabinet, when changing into ground connection handcart, when ground connection handcart pushes away the operating position, push against travel switch, open auxiliary contact XC2 to travel switch is closed, normally closed auxiliary contact XC1 disconnection, at this moment, the normally open auxiliary contact XC2 of parallelly connected at tripping circuit is closed, the tripping circuit switch-on, thereby jump the inlet wire cabinet, meanwhile, the normally closed auxiliary contact XC1 of cluster at the combined floodgate circuit becomes the opening point, thereby make inlet wire cabinet combined floodgate circuit disconnection can not pass electric.
In one embodiment, the present embodiment provides a PT cabinet, which includes a cabinet body, and the cabinet body is provided with an incoming cabinet electrical interlock circuit therein.
Fig. 3 is the schematic diagram of the PT cabinet that an embodiment of this application provided, in this embodiment, PT cabinet inside wall is provided with travel switch, when the PT handcart pushed in the PT cabinet, travel switch did not move, when the grounding handcart pushed in the PT cabinet, travel switch moved, travel switch's normally open auxiliary contact XC2 was closed this moment, normally closed auxiliary contact XC1 disconnection, trip circuit switch-on in the vacuum circuit breaker 10 this moment, the auxiliary contact disconnection in the closing circuit, thereby make inlet wire cabinet closing circuit disconnection, thereby avoided the potential safety hazard that the intermediate relay broke down and lead to.
Fig. 4 is a schematic diagram of a PT handcart pushed into a PT cabinet according to an embodiment of the present application, as shown in fig. 4, where the PT handcart cannot be pushed to a travel switch, cannot change the state of the travel switch, fig. 5 is a schematic diagram of the grounding handcart pushed into the PT cabinet according to an embodiment of the present application, and referring to fig. 5, the shape of the PT handcart is the same as that of the grounding handcart, the grounding handcart is provided with a bracket for contacting with a travel switch when being pushed into the PT cabinet, the bracket can be jacked to the travel switch when the grounding vehicle is in a working position so as to change the state of an auxiliary point of the travel switch, when the grounding vehicle is pushed to the working position, the grounding vehicle pushes against the travel switch, the on-point of the travel switch is changed into the off-point, the auxiliary point which is connected in parallel with the trip circuit is closed, the trip circuit is connected, therefore, the incoming cabinet is tripped, and meanwhile, the auxiliary point connected in series with the closing loop becomes an open point, so that the closing loop of the incoming cabinet cannot be powered off.
The utility model provides an inlet wire cabinet electrical interlocking circuit, inlet wire cabinet electrical interlocking device and PT cabinet, through set up travel switch between miniature circuit breaker and vacuum circuit breaker for the earthing handcart interlocks through control travel switch's on-off state and inlet wire cabinet, and the operating position that has solved current earthing handcart and inlet wire cabinet adopted intermediate relay extension earthing handcart usually comes the switching-on/off return circuit of interlocking high-pressure inlet wire cabinet, has the problem of great potential safety hazard.
The above description is only an alternative embodiment of the present invention, and should not be construed as limiting the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An inlet wire cabinet electrical interlocking circuit is connected with an alternating current power supply, and is characterized in that the inlet wire cabinet electrical interlocking circuit comprises: the device comprises a miniature circuit breaker, a first key switch, a second key switch, a travel switch and a vacuum circuit breaker;
the first input end of the miniature circuit breaker is connected with the first end of the alternating current power supply, the second input end of the miniature circuit breaker is connected with the second end of the alternating current power supply, the first output end of the miniature circuit breaker, the first end of the first key switch, the first end of the second key switch and the first end of the normally open auxiliary contact of the travel switch are connected in common, the second end of the normally open auxiliary contact of the travel switch and the second end of the second key switch are connected with the first switching signal end of the vacuum circuit breaker, the second end of the first key switch is connected with the first end of the normally closed auxiliary contact of the travel switch, the second end of the normally closed auxiliary contact of the travel switch is connected with the first closing signal end of the vacuum circuit breaker, and a second switching-off signal end of the vacuum circuit breaker and a second switching-on signal end of the vacuum circuit breaker are connected to a second output end of the miniature circuit breaker in a sharing mode.
2. The inlet cabinet electrical interlock circuit of claim 1, wherein the vacuum circuit breaker comprises: the circuit comprises a first rectifier bridge, a second rectifier bridge, an anti-tripping relay, a current-limiting resistor, a trip coil, a closing coil and a vacuum circuit breaker auxiliary switch;
the first input end of the first rectifier bridge is connected with the second end of the normally closed contact of the travel switch, the second input end of the first rectifier bridge is connected with the second output end of the miniature circuit breaker, the first output end of the first rectifier bridge is connected with the first end of the first normally open auxiliary contact of the vacuum circuit breaker auxiliary switch and the first end of the auxiliary contact of the anti-tripping relay, the second end of the first normally open auxiliary contact of the vacuum circuit breaker auxiliary switch, the second end of the auxiliary contact of the anti-tripping relay and the first end of the current limiting resistor are connected in common, the second end of the current limiting resistor is connected with the first end of the coil of the anti-tripping relay, the second output end of the first rectifier bridge and the first end of the closing coil are connected in common, and the second end of the closing coil is connected with the first end of the first auxiliary normally closed contact of the vacuum circuit breaker auxiliary switch, the second end of the first normally closed auxiliary contact of the vacuum circuit breaker auxiliary switch is connected with the first end of the second normally closed auxiliary contact of the vacuum circuit breaker auxiliary switch, the second end of the second normally closed auxiliary contact of the auxiliary switch of the vacuum circuit breaker is connected with the third end of the auxiliary contact of the anti-tripping relay, the first input end of the second rectifier bridge is connected with the second end of the normally open contact of the travel switch, the second input end of the second rectifier bridge is connected with the first end of a second normally open contact of the auxiliary switch of the vacuum circuit breaker, the second end of the second normally open contact of the auxiliary switch of the vacuum circuit breaker is connected with the second output end of the miniature circuit breaker, and the first output end of the second rectifier bridge is connected with the first end of the tripping coil, and the second output end of the second rectifier bridge is connected with the second end of the tripping coil.
3. The inlet cabinet electrical interlock circuit of claim 2, wherein the vacuum circuit breaker further comprises a micro switch disposed between the second end of the second normally closed auxiliary contact of the vacuum circuit breaker auxiliary switch and the third end of the auxiliary contact of the anti-trip relay.
4. The inlet cabinet electrical interlock circuit of claim 2, wherein the vacuum circuit breaker further comprises an aerial socket, the aerial socket comprising four sockets, the four sockets being respectively disposed at the first switching signal terminal, the second switching signal terminal, the first switching signal terminal, and the second switching signal terminal of the vacuum circuit breaker.
5. The inlet cabinet electrical interlock circuit of claim 4, wherein the aircraft receptacle is of the type CZ-58.
6. The inlet cabinet electrical interlock circuit of claim 1, wherein the travel switch is of the type LXW 20-11.
7. The inlet cabinet electrical interlock circuit of claim 1, wherein the miniature circuit breaker is of type iC 65N-2P.
8. An inlet cabinet electrical interlock, comprising:
a first AC power supply port;
a second AC power port;
the inlet cabinet electrical interlock circuit of any one of claims 1-7, connected to the first ac power port and the second ac power port, respectively; and
and the grounding handcart is used for controlling the working state of the travel switch.
9. A PT cabinet, characterized by comprising a cabinet body, wherein the PT cabinet is internally provided with an incoming cabinet electric interlocking circuit according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921598770.5U CN210744593U (en) | 2019-09-24 | 2019-09-24 | Electrical interlocking circuit of inlet wire cabinet, electrical interlocking device of inlet wire cabinet and PT cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921598770.5U CN210744593U (en) | 2019-09-24 | 2019-09-24 | Electrical interlocking circuit of inlet wire cabinet, electrical interlocking device of inlet wire cabinet and PT cabinet |
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| CN210744593U true CN210744593U (en) | 2020-06-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821221A (en) * | 2021-02-22 | 2021-05-18 | 北京恒源利通电力技术有限公司 | Panel type switch operation controller |
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2019
- 2019-09-24 CN CN201921598770.5U patent/CN210744593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821221A (en) * | 2021-02-22 | 2021-05-18 | 北京恒源利通电力技术有限公司 | Panel type switch operation controller |
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