CN217606035U

CN217606035U - Automatic testing device for residual current operated protector for street lamp

Info

Publication number: CN217606035U
Application number: CN202220824606.7U
Authority: CN
Inventors: 赵悦
Original assignee: CSCEC Aecom Consultant Co Ltd
Current assignee: CSCEC Aecom Consultant Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-10-18
Anticipated expiration: 2032-04-11

Abstract

The utility model provides an automatic testing device of residual current operated protective device for street lamp, residual current operated protective device test module contains relay, resistor, and the relay has the contact switch, and relay contact switch and resistor are connected into the switch primary loop, and the switch primary loop is connected to the power cord, and the relay passes through control cable connection control module; the electric operating device is connected with the control module through a control cable; the residual current operated protective circuit breaker is connected with the electric operating device through a connecting rod, so that the same action position is ensured; the control module is connected to the communication module and outputs a switching value signal. Has the beneficial effects that: the remote test can be carried out regularly, and a large amount of operation and maintenance workload is reduced.

Description

Automatic testing device for residual current operated protector for street lamp

Technical Field

The utility model belongs to the technical field of outdoor lighting equipment, concretely relates to automatic testing arrangement of residual current operated protective device.

Background

A TT type power distribution system for road lighting is characterized in that residual current protection circuit breakers are arranged at a tail end street lamp and a starting end power distribution source, and the residual current protection circuit breakers with proper rated current can be selected to play a reliable protection role in ground faults and personal safety. However, the residual current protection circuit breaker needs to be tested for effectiveness every month, a large amount of manual investment is needed, and the residual current protection circuit breaker is huge in use amount at present and cannot be tested according to the specified month and month.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic testing device of a residual current operated protector, aiming at the defects in the prior art; the residual current protection circuit breaker can avoid the management pain point which can not be realized due to the fact that the residual current protection circuit breaker needs regular manual maintenance, and meanwhile, the effect of improving the power distribution distance can be achieved.

The technical scheme of the utility model is that: an automatic testing device for a residual current operated protector for a street lamp comprises a residual current operated protector testing module, an electric operating device, a residual current operated protective circuit breaker and a control module, wherein the residual current operated protector testing module comprises a relay and a resistor, the relay is provided with a contact switch, the relay contact switch and the resistor are connected into a primary switch loop, the primary switch loop is connected to a power line, and the relay is connected with the control module through a control cable; the electric operating device is connected with the control module through a control cable; the residual current operated protective circuit breaker is connected with the electric operating device through a connecting rod, and the residual current operated protective circuit breaker and the electric operating device have the same action position; the control module is connected to the communication module and inputs and outputs switching value signals.

The residual current operated protective circuit breaker contains test button, test resistor, current transformer, circuit breaker relay, and test button and test resistor connect to the power cord and constitute the return circuit, and current transformer encircles the power cord, and current transformer and circuit breaker relay are connected through secondary circuit, and the residual current operated protective circuit breaker contains tripping device, and tripping device and circuit breaker relay are connected.

Preferably, the testing device is arranged in a street lamp door or at a street lamp power distribution source.

Preferably, the resistor value is less than 7333 ohms.

Preferably, the residual current operated protector testing module is installed on the side surface of the residual current operated protection circuit breaker. The electric operating device is arranged on the side surface of the residual current operated protective circuit breaker.

The beneficial effects of the utility model are that: the device reduces a large amount of operation and maintenance workload by carrying out remote periodic test on the residual current operated protective circuit breaker of the street lamp, so that the residual current operated protective circuit breaker can be widely applied, the functional module can be configured at a low price in the application of road lighting, the distribution distance can be effectively increased, the number of box-type substations is reduced, and the investment of engineering is greatly reduced.

Drawings

FIG. 1 is a schematic block diagram of the present invention;

FIG. 2 is a schematic view of the installation of each functional module of the present invention;

figure 3 the utility model discloses an external wiring picture.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings:

as shown in the figure, an automatic testing device for a residual current operated protector for a street lamp; the device comprises a residual current operated protector testing module 1, an electric operating device 2, a residual current operated protective circuit breaker 3 and a control module 4.

The residual current operated protector testing module 1 comprises a relay 1-1 and a resistor 1-2, the relay 1-1 is provided with a contact switch, the contact switch of the relay 1-1 and the resistor 1-2 are connected into a switch primary loop, the switch primary loop is connected to a power line, the relay 1-1 is connected with a control module 4 through a control cable, and receives a control instruction of the control module 4 to realize the switching-on and switching-off operation of the relay contact switch.

The electric executive device 2 is an electric executive device of the residual current operated protective circuit breaker 3 and is connected with the control module 4 through a control cable; the residual current operated protective circuit breaker 3 is connected with the electric operating device 2 through a connecting rod, and the residual current operated protective circuit breaker 3 is the same as the electric operating device 2 in action position. Control module 4 inserts communication module and input, output switching value signal, and electric actuator 2 receives control module 4's control command, realizes the executing device action, drives residual current action protection circuit breaker 3 action through the connecting rod simultaneously, realizes residual current action protection circuit breaker 3's automatic divide-shut brake action. The electric actuator 2 uploads the action position state of the electric actuator 2 to the control device 4 through a control line.

The residual current operated protective circuit breaker 3 comprises a test button 3-1, a test resistor 3-2, a current transformer 3-3 and a circuit breaker relay 3-5, wherein the test button 3-1 and the test resistor 3-2 are connected to a power line to form a loop, the current transformer 3-3 surrounds the power line, and the current transformer 3-3 and the circuit breaker relay 3-5 are connected through a secondary loop 3-4. The residual current operated protective circuit breaker 3 has the function of automatically opening the brake after passing through the residual current, plays a protective role, but can not automatically recover the closing state.

The utility model discloses a theory of operation and process are:

the residual current operated protective circuit breaker is provided with a manual test button 3-1, the button is required to be pressed once every month, residual current is generated after the button is pressed, and the residual current operated protective circuit breaker 3 can execute brake separating action, which shows that the residual current operated protective circuit breaker 3 can break the brake and cut off the power after passing through the residual current, and the function is effective.

The residual current operated protective circuit breaker 3 is arranged in a lamp door of each street lamp and can also be arranged at a power distribution power supply of the street lamps, and the using quantity is huge. Although the test button is pressed, the operation is simple, the workload is large, and a manager cannot press the test button every month, so that the protection effectiveness of the residual current operated circuit breaker cannot be confirmed, the possibility of circuit man electric shock exists, and potential safety hazards are brought to the circuit man.

This device control module is connected with current city street lamp management system's communication module, and the control module exports switching value signal, and the action of control residual current operated protective device test module 1 divide-shut brake and electric actuator 2, and electric actuator 2 drives residual current operated protective circuit breaker 3 actions through the connecting rod simultaneously, realizes the automatic divide-shut brake action of residual current operated protective circuit breaker.

In practical application, the testing time of the residual current operated protective circuit breaker 3 at each street lamp position or street lamp power distribution source position is set in the street lamp management system, the testing instruction of the residual current operated protective device testing module 1 for switching on is transmitted to the control module through the communication function in the street lamp management system, the control module receives the instruction to control the switching on of the contact switch in the residual current operated protective device testing module 1, the passing current cannot be very large due to the effect of the resistor 1-2, and the requirement for switching off of the residual current operated protective circuit breaker 3 can be met. The residual current action protection circuit breaker electric loop carries out the separating brake action after passing through the residual current, and the street lamp will extinguish after separating brake and electric actuator 2 can upload the status signal to control module 4 simultaneously, and control module 4 accessible communication module uploads to street lamp management system. At this time, the closing instruction of the residual current operated protector testing module 1 disappears, and the residual current operated protector testing module 1 is in the opening state.

The extinguishing state of the street lamp and the state of the electric actuating device 2 can be checked in a street lamp management system, at the moment, the automatic test action of the residual current operated protective circuit breaker is completed, but the residual current operated protective circuit breaker cannot automatically recover the original state after being opened, namely, the closing action is carried out. At the moment, the command of the electric actuating device for switching on is transmitted to the control module through the communication function in the street lamp management system, the control module receives the command of the electric actuating device for switching on, the electric actuating device executes actions, and the connecting rod drives the residual current operated protective circuit breaker to act, so that the switching on function is realized. The street lamp resumes the power supply and is lighted again, has accomplished once long-range automatic test and has resumed the action of power supply, realizes remote monitoring's function, the function that this patent will realize promptly.

Claims

1. An automatic testing device of a residual current operated protector for a street lamp is characterized by comprising a residual current operated protector testing module (1), an electric operating device (2), a residual current operated protective circuit breaker (3) and a control module (4), wherein the residual current operated protector testing module (1) comprises a relay (1-1) and a resistor (1-2), the relay (1-1) is provided with a contact switch, the contact switch of the relay (1-1) and the resistor (1-2) are connected into a primary switch loop, the primary switch loop is connected to a power line, and the relay (1-1) is connected with the control module (4) through a control cable; the electric operating device (2) is connected with the control module (4) through a control cable; the residual current operated protective circuit breaker (3) is connected with the electric operating device (2) through a connecting rod, and the residual current operated protective circuit breaker (3) and the electric operating device (2) are in the same action position; the control module (4) is connected with the communication module and inputs and outputs switching value signals.

2. The automatic testing device of the residual current operated protector for the street lamp according to claim 1, characterized in that the residual current operated protective circuit breaker (3) comprises a test button (3-1), a test resistor (3-2), a current transformer (3-3) and a circuit breaker relay (3-5), wherein the test button (3-1) and the test resistor (3-2) are connected to a power line to form a loop, the current transformer (3-3) surrounds the power line, the current transformer (3-3) is connected with the circuit breaker relay (3-5) through a secondary loop (3-4), and the residual current operated protective circuit breaker (3) comprises a tripping mechanism which is connected with the circuit breaker relay (3-5).

3. The automatic testing device for the residual current operated protector of the street lamp as claimed in claim 1, wherein the testing device is arranged in a street lamp door or at a street lamp power distribution source.

4. The automatic testing device of the residual current operated protector for the street lamp as claimed in claim 1, wherein the resistance value of the resistor (1-2) is less than 7333 ohms.

5. The automatic testing device of the residual current operated circuit breaker for the street lamp as claimed in claim 1, characterized in that the residual current operated circuit breaker testing module (1) is installed at the side of the residual current operated circuit breaker (3).

6. The automatic testing device of the residual current operated circuit breaker for the street lamp as claimed in claim 1, characterized in that the electric operating device (2) is installed at the side of the residual current operated circuit breaker (3).