CN113629535A - Low-voltage bypass live-wire work control box - Google Patents

Low-voltage bypass live-wire work control box Download PDF

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Publication number
CN113629535A
CN113629535A CN202110870251.5A CN202110870251A CN113629535A CN 113629535 A CN113629535 A CN 113629535A CN 202110870251 A CN202110870251 A CN 202110870251A CN 113629535 A CN113629535 A CN 113629535A
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China
Prior art keywords
phase
low
circuit breaker
line
voltage circuit
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CN202110870251.5A
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Chinese (zh)
Inventor
邓代国
余涛
崔琳
王才永
谭业涛
黄琳榃
刘洪涛
李晨
邹彦
艾福洲
梁伟
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Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd
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Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd
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Priority to CN202110870251.5A priority Critical patent/CN113629535A/en
Publication of CN113629535A publication Critical patent/CN113629535A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/52—Mobile units, e.g. for work sites
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Physics & Mathematics (AREA)
  • Keying Circuit Devices (AREA)

Abstract

本发明属于电力系统技术领域，具体涉及一种低压旁路带电作业控制箱。低压旁路作业控制箱，包括箱体、刀闸、低压断路器；其特征在于：还包括报警器和3个继电器，第一个继电器的2个线圈端子分别对应连接刀闸的进线侧的A1相线路、刀闸的出线侧的A2相线路，第二个继电器的2个线圈端子分别对应连接刀闸的进线侧的B1相线路、刀闸的出线侧的B2相线路，第三个继电器的2个线圈端子分别对应连接刀闸的进线侧的C1相线路、刀闸的出线侧的C2相线路；3个继电器的辅助接点相并联后再与电池、报警器串联。该控制箱在接线错误时自动报警，可防止短路发生，防止带负荷开断、接入时产生电弧伤人，旁路供电区域故障时越级跳闸。

Figure 202110870251

The invention belongs to the technical field of electric power systems, and in particular relates to a low-voltage bypass live operation control box. The low-voltage bypass operation control box includes a box, a knife switch, and a low-voltage circuit breaker; it is characterized in that: it also includes an alarm and three relays, and the two coil terminals of the first relay correspond to the terminals on the incoming line side of the knife switch respectively. The A1 phase line, the A2 phase line on the outgoing side of the knife switch, the two coil terminals of the second relay correspond to the B1 phase line on the incoming side of the knife switch, the B2 phase line on the outgoing side of the knife switch, and the third The two coil terminals of the relay correspond to the C1-phase line on the incoming side of the switch and the C2-phase line on the outgoing side of the switch respectively; the auxiliary contacts of the three relays are connected in parallel and then connected in series with the battery and the alarm. The control box automatically alarms when the wiring is wrong, which can prevent the occurrence of short circuit, prevent the load breaking, the arc injury when the connection is connected, and the jump tripping when the bypass power supply area fails.

Figure 202110870251

Description

Low-voltage bypass live-wire work control box
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a low-voltage bypass live-wire work control box.
Background
The low-voltage power supply of the power distribution network is the last ring of safe and reliable power supply, the low-voltage transformation of the power distribution network is realized, the user access amount is large, the low-voltage line faults are low, more than 80% of the work orders of the national network 95598 system are low-voltage faults, and part of the low-voltage line faults cannot be repaired in time. The low pressure live working environment is complicated relatively, and the live working risk is great, develops a low pressure bypass live working control box now and improves low pressure live working safety, reduces the low pressure and reforms transform the user power failure under the circumstances such as user's access, fault handling, improves the power supply reliability, increases the power supply volume, promotes the power consumption customer and obtains electric power happiness index.
Disclosure of Invention
The invention aims to provide a low-voltage bypass live working control box which can automatically give an alarm when a wiring error occurs.
In order to achieve the purpose, the invention adopts the technical scheme that: the low-voltage bypass operation control box comprises a box body 1, a disconnecting link 4 and a low-voltage circuit breaker 8; the disconnecting link 4 and the low-voltage circuit breaker 8 are respectively installed on a front side panel 9 of the box body 1, the front side panel 9 is provided with inlet side terminals 10 of an A1 phase, a B1 phase, a C1 phase and an N1 phase of an inlet side of the low-voltage circuit breaker 8, the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all located below the low-voltage circuit breaker 8, and the A1 phase, the B1 phase, the C1 phase and the N1 phase of the inlet side of the low-voltage circuit breaker 8 are respectively connected with the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase; the front panel 9 is provided with outlet side terminals 6 of a2 phase, a B2 phase, a C2 phase and an N2 phase on the outlet side of the low-voltage circuit breaker 8, the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker 8, and the a2 phase, the B2 phase, the C2 phase and the N2 phase circuits on the outlet side of the low-voltage circuit breaker 8 are respectively connected with the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase; the A1 phase line at the incoming line side of the disconnecting link 4 is connected with the A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, the B1 phase line at the incoming line side of the disconnecting link 4 is connected with the B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, and the C1 phase line at the incoming line side of the disconnecting link 4 is connected with the C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8; the A2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, the B2 phase line on the outgoing line side of the disconnecting link 4 is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, and the C2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8;
the method is characterized in that: the circuit also comprises an alarm 5 and 3 relays 11, wherein 2 coil terminals of the first relay are respectively correspondingly connected with an A1 phase circuit on the wire inlet side of the disconnecting link 4 and an A2 phase circuit on the wire outlet side of the disconnecting link 4, 2 coil terminals of the second relay are respectively correspondingly connected with a B1 phase circuit on the wire inlet side of the disconnecting link 4 and a B2 phase circuit on the wire outlet side of the disconnecting link 4, and 2 coil terminals of the third relay are respectively correspondingly connected with a C1 phase circuit on the wire inlet side of the disconnecting link 4 and a C2 phase circuit on the wire outlet side of the disconnecting link 4; the auxiliary contacts of the 3 relays 11 are connected in parallel and then connected in series with the battery and the alarm 5.
The alarm 5 is a voice alarm.
And the A2 phase, the B2 phase and the C2 phase circuits on the outgoing line side of the low-voltage circuit breaker 8 are respectively provided with a current transformer 13, the current transformer 13 is connected with an ammeter 7 through a lead, and the ammeter 7 is arranged on the front side panel 9.
4 universal traveling wheels 3 are mounted on the bottom panel of the box body 1.
And a pull rod 2 is arranged on the rear panel of the box body 1.
And the mechanical interlocking device 12 is arranged on the operating mechanism of the disconnecting link 4 and the operating mechanism of the low-voltage circuit breaker 8.
The invention has the beneficial effects that: the low-voltage bypass live-line work control box is popularized and applied to low-voltage live-line work, firstly, the safety of operators can be guaranteed, and live-line work can be switched to work in a power failure environment for a long time; the power supply reliability is improved, uninterrupted power supply is guaranteed through bypass power supply, the power supply reliability is improved, the electricity consumption of people is guaranteed, and the enterprise image and social benefits are improved; thirdly, when the wiring is wrong, the alarm is automatically given out, so that the short circuit can be prevented; fourthly, electric arcs generated when the load is cut off and connected are prevented from hurting people, and override tripping is prevented when a bypass power supply area fails; fifthly, the electricity selling quantity is increased, and the enterprise benefit is improved. The control box is simple and practical in structure, convenient to operate and maintain, low in investment, reusable and obvious in economic benefit.
Drawings
FIG. 1 is a perspective view of the housing of the present invention.
Fig. 2 is a front view of the case of the present invention.
Fig. 3 is a schematic diagram of the circuit of the present invention.
In the figure: the system comprises a box body 1, a pull rod 2, a traveling wheel 3, a disconnecting link 4, an alarm 5, an outgoing line side terminal 6, an ammeter 7, a low-voltage circuit breaker 8, a front panel 9, an incoming line side terminal 10, a relay 11, a mechanical interlocking device 12, a current transformer 13, an outgoing line side 14 and an incoming line side 15.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the low-voltage bypass live-working control box includes a box body 1, a disconnecting link 4 and a low-voltage circuit breaker (or switch) 8; the disconnecting link 4 and the low-voltage circuit breaker (or called as circuit breaker) 8 are respectively installed on a front panel 9 of the box body 1, the front panel 9 is provided with inlet side terminals 10 (corresponding to 4 inlet side terminals) of an A1 phase, a B1 phase, a C1 phase and an N1 phase at the inlet side of the low-voltage circuit breaker 8, the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all positioned below the low-voltage circuit breaker 8, and the A1 phase, the B1 phase, the C1 phase and the N1 phase at the inlet side of the low-voltage circuit breaker 8 are respectively connected with the inlet side terminals 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase; the front panel 9 is provided with outlet side terminals 6 of a2 phase, a B2 phase, a C2 phase and an N2 phase on the outlet side of the low-voltage circuit breaker 8, the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker 8, and the a2 phase, the B2 phase, the C2 phase and the N2 phase circuits on the outlet side of the low-voltage circuit breaker 8 are respectively connected with the outlet side terminals 6 of the a2 phase, the B2 phase, the C2 phase and the N2 phase; the A1 phase line at the incoming line side of the disconnecting link 4 is connected with the A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, the B1 phase line at the incoming line side of the disconnecting link 4 is connected with the B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, and the C1 phase line at the incoming line side of the disconnecting link 4 is connected with the C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8; the A2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, the B2 phase line on the outgoing line side of the disconnecting link 4 is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, and the C2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8;
the circuit also comprises an alarm 5 and 3 relays 11, wherein 2 coil terminals of the first relay are respectively correspondingly connected with an A1 phase circuit on the wire inlet side of the disconnecting link 4 and an A2 phase circuit on the wire outlet side of the disconnecting link 4, 2 coil terminals of the second relay are respectively correspondingly connected with a B1 phase circuit on the wire inlet side of the disconnecting link 4 and a B2 phase circuit on the wire outlet side of the disconnecting link 4, and 2 coil terminals of the third relay are respectively correspondingly connected with a C1 phase circuit on the wire inlet side of the disconnecting link 4 and a C2 phase circuit on the wire outlet side of the disconnecting link 4; the auxiliary contacts (normally open contacts and normally closed contacts) of the 3 relays 11 are connected in parallel and then are connected in series with the battery and the alarm 5.
The alarm 5 is a voice alarm (which can be composed of an alarm circuit and a loudspeaker, and the output end of the alarm circuit is connected with the loudspeaker); but may also be a speaker. When the phases at the two sides of the switch are not corresponding, the relay is driven to act, the auxiliary contact is closed, the alarm is switched on to alarm in time to inform of a wiring error, and workers can correct the wiring error in time.
A2 phase, B2 phase and C2 phase circuits on the outgoing line side of the low-voltage circuit breaker 8 are respectively provided with a current transformer 13, the current transformer 13 is connected with an ammeter 7 through a lead, and the ammeter 7 is arranged on the front side panel 9 (the ammeter 7 is 3, and is positioned below the outgoing line side terminal 6 and above the low-voltage circuit breaker 8).
4 universal traveling wheels 3 are mounted on the bottom panel of the box body 1.
And a pull rod 2 (a telescopic pull rod) is arranged on the rear panel of the box body 1.
And the mechanical interlocking device 12 is arranged on the operating mechanism of the disconnecting link 4 and the operating mechanism of the low-voltage circuit breaker 8.
The low-voltage bypass live-line work control box is a comprehensive control device integrating a low-voltage circuit breaker, a disconnecting link, an ammeter and an alarm, can be operated under the conditions of electrification and load, is automatically disconnected when a fault occurs, and avoids influencing the reliable power supply of related systems. The low-voltage bypass live-line work control box is convenient and flexible when being accessed, one control box can complete the access of three-phase four-wire and single-phase power supply modes, and the line length is flexibly and conveniently selected. The automatic alarm device has the function of automatic alarm of the wiring phase, and can automatically alarm when the wiring is wrong, so that the short circuit is prevented. The draw-bar box type structure is convenient to transport and simple to manage.
The low-voltage circuit breaker 8 and the disconnecting link 4 of the low-voltage bypass live working control box are connected in parallel, the disconnecting link cannot be operated when the low-voltage circuit breaker 8 is disconnected, and the disconnecting link can be pulled and closed only after the low-voltage circuit breaker 8 is closed, so that the disconnecting link is effectively prevented from being pulled and closed under load. When the phases on the two sides of the low-voltage circuit breaker 8 are connected in a wrong mode, a pressure difference is generated, the voice alarm acts to remind a worker that the circuit breaker cannot be closed due to a wiring error. When the operation line and the bypass are operated in parallel, the control box disconnecting link is closed, so that the condition that the low-voltage circuit breaker 8 is operated and the upper-level switch does not operate in the process of removing (accessing) the operation line by a worker to cause the electric arc of the line with load to cut off (access) to hurt the worker is prevented. Before the bypass power supply, the current protection of the low-voltage circuit breaker 8 is adjusted according to the load current, when the bypass power supply is carried out, the low-voltage circuit breaker 8 is closed, the disconnecting link is pulled open, the supplied load is tripped during the fault, and the power supply of a superior power supply is not influenced.

Claims (6)

1.低压旁路带电作业控制箱，包括箱体(1)、刀闸(4)、低压断路器(8)；刀闸(4)、低压断路器(8)分别安装在箱体(1)的前侧面板(9)上，前侧面板(9)上设有低压断路器(8)的进线侧的A1相、B1相、C1相、N1相的进线侧接线端(10)，A1相、B1相、C1相、N1相的进线侧接线端(10)均位于低压断路器(8)的下方，低压断路器(8)的进线侧的A1相、B1相、C1相、N1相线路分别与对应的A1相、B1相、C1相、N1相的进线侧接线端(10)相连；前侧面板(9)上设有低压断路器(8)的出线侧的A2相、B2相、C2相、N2相的出线侧接线端(6)，A2相、B2相、C2相、N2相的出线侧接线端(6)均位于低压断路器(8)的上方，低压断路器(8)的出线侧的A2相、B2相、C2相、N2相线路分别与对应的A2相、B2相、C2相、N2相的出线侧接线端(6)相连；刀闸(4)的进线侧的A1相线路与低压断路器(8)的进线侧的A1相线路由导线相连，刀闸(4)的进线侧的B1相线路与低压断路器(8)的进线侧的B1相线路由导线相连，刀闸(4)的进线侧的C1相线路与低压断路器(8)的进线侧的C1相线路由导线相连；刀闸(4)的出线侧的A2相线路与低压断路器(8)的出线侧的A2相线路由导线相连，刀闸(4)的出线侧的B2相线路与低压断路器(8)的出线侧的B2相线路由导线相连，刀闸(4)的出线侧的C2相线路与低压断路器(8)的出线侧的A2相线路由导线相连；1. The low-voltage bypass live operation control box, including the box body (1), the knife switch (4), and the low-voltage circuit breaker (8); the knife switch (4) and the low-voltage circuit breaker (8) are respectively installed in the box body (1) On the front side panel (9) of the low-voltage circuit breaker (8), the input side terminals (10) of the A1 phase, B1 phase, C1 phase and N1 phase of the incoming line side of the low-voltage circuit breaker (8) are arranged on the front side panel (9), The terminals (10) on the incoming side of the A1-phase, B1-phase, C1-phase and N1-phase are all located below the low-voltage circuit breaker (8). , N1-phase lines are respectively connected with the corresponding A1-phase, B1-phase, C1-phase, N1-phase incoming side terminals (10); the front panel (9) is provided with A2 on the outgoing side of the low-voltage circuit breaker (8). The outgoing side terminals (6) of phase, B2 phase, C2 phase and N2 phase, and the outgoing side terminals (6) of A2 phase, B2 phase, C2 phase and N2 phase are all located above the low-voltage circuit breaker (8). The A2-phase, B2-phase, C2-phase and N2-phase lines on the outgoing side of the circuit breaker (8) are respectively connected with the corresponding A2-phase, B2-phase, C2-phase and N2-phase outgoing-side terminals (6); ) on the incoming side of the A1 phase line is connected with the A1 phase line on the incoming side of the low-voltage circuit breaker (8) by wires, and the B1-phase line on the incoming side of the knife switch (4) is connected with the incoming The B1-phase line on the line side is connected by wires, the C1-phase line on the incoming side of the knife switch (4) is connected with the C1-phase line on the incoming side of the low-voltage circuit breaker (8) by the wire; the outgoing side of the knife switch (4) The A2-phase line on the outgoing side of the low-voltage circuit breaker (8) is connected by a wire, and the B2-phase line on the outgoing side of the knife switch (4) is connected with the B2-phase line on the outgoing side of the low-voltage circuit breaker (8) by a wire connected, the C2-phase line on the outlet side of the knife switch (4) is connected with the A2-phase line on the outlet side of the low-voltage circuit breaker (8) by a wire; 其特征在于：还包括报警器(5)和3个继电器(11)，第一个继电器的2个线圈端子分别对应连接刀闸(4)的进线侧的A1相线路、刀闸(4)的出线侧的A2相线路，第二个继电器的2个线圈端子分别对应连接刀闸(4)的进线侧的B1相线路、刀闸(4)的出线侧的B2相线路，第三个继电器的2个线圈端子分别对应连接刀闸(4)的进线侧的C1相线路、刀闸(4)的出线侧的C2相线路；3个继电器(11)的辅助接点相并联后再与电池、报警器(5)串联。It is characterized in that: it further comprises an alarm device (5) and three relays (11), and the two coil terminals of the first relay are respectively corresponding to the A1 phase line connected to the incoming line side of the knife switch (4), and the knife switch (4) The A2-phase line on the outgoing side of the switch (4), the two coil terminals of the second relay correspond to the B1-phase line on the incoming side of the knife switch (4), the B2-phase line on the outgoing side of the knife switch (4), and the third The two coil terminals of the relay are respectively connected to the C1 phase line on the incoming side of the knife switch (4) and the C2 phase line on the outgoing side of the knife switch (4); the auxiliary contacts of the three relays (11) are connected in parallel with each other. The battery and the alarm (5) are connected in series. 2.根据权利要求1所述的低压旁路带电作业控制箱，其特征在于：所述的报警器(5)为语音报警器。2 . The low-voltage bypass live operation control box according to claim 1 , wherein the alarm device ( 5 ) is a voice alarm device. 3 . 3.根据权利要求1所述的低压旁路带电作业控制箱，其特征在于：所述的低压断路器(8)的出线侧的A2相、B2相、C2相线路上分别安装有电流互感器(13)，电流互感器(13)通过导线与电流表(7)相连，电流表(7)安装在前侧面板(9)上。3. The low-voltage bypass live operation control box according to claim 1, characterized in that: current transformers are respectively installed on the A2-phase, B2-phase, and C2-phase lines on the outlet side of the low-voltage circuit breaker (8). (13), the current transformer (13) is connected with the ammeter (7) through a wire, and the ammeter (7) is installed on the front panel (9). 4.根据权利要求1所述的低压旁路作业控制箱，其特征在于：所述箱体(1)的底面板上安装有4个万向行走轮(3)。4. The low-pressure bypass operation control box according to claim 1, characterized in that 4 universal traveling wheels (3) are installed on the bottom panel of the box body (1). 5.根据权利要求1所述的低压旁路带电作业控制箱，其特征在于：所述箱体(1)的后面板上安装有拉杆(2)。5 . The low-voltage bypass live operation control box according to claim 1 , characterized in that: a pull rod ( 2 ) is installed on the rear panel of the box body ( 1 ). 6 . 6.根据权利要求1所述的低压旁路带电作业控制箱，其特征在于：所述刀闸(4)的操作机构与低压断路器(8)的操作机构上安装有机械联锁装置(12)。6. The low-voltage bypass live operation control box according to claim 1, wherein a mechanical interlocking device (12) is installed on the operating mechanism of the knife switch (4) and the operating mechanism of the low-voltage circuit breaker (8). ).
CN202110870251.5A 2021-07-30 2021-07-30 Low-voltage bypass live-wire work control box Pending CN113629535A (en)

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