CN212379506U - Spare power automatic switching rapid testing device - Google Patents
Spare power automatic switching rapid testing device Download PDFInfo
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- CN212379506U CN212379506U CN202022357072.5U CN202022357072U CN212379506U CN 212379506 U CN212379506 U CN 212379506U CN 202022357072 U CN202022357072 U CN 202022357072U CN 212379506 U CN212379506 U CN 212379506U
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Abstract
The utility model relates to a spare power automatic switching test technical field is a spare power automatic switching quick testing arrangement, and it includes three testing arrangement, and every testing arrangement all includes combined floodgate return circuit, tripping display circuit and combined floodgate display circuit, combined floodgate return circuit, tripping circuit, position blocking circuit, tripping display circuit and the equal electricity in combined floodgate display circuit are connected between positive control bus and negative control bus. The utility model has the advantages of reasonable and compact structure, high durability and convenient use, simulate the main power supply respectively through three testing arrangement, section switch and stand-by power supply, and be connected three testing arrangement with the device of being tested fully automatic switching, the main operating fault of simulation, the test is tested the activestandby switching process of the device of being tested fully automatic switching, avoided using a plurality of simulation circuit breakers to carry out complicated wiring and tested, the time of the device test of being fully automatic switching has been reduced, the test procedure of the device of being fully automatic switching has been simplified, the cost of the device test of being fully automatic switching and the error incidence in the test procedure have been reduced.
Description
Technical Field
The utility model relates to a spare power automatic switching test technical field is a spare power automatic switching quick testing arrangement.
Background
With the continuous promotion of the strategic targets of 'three types, two networks and first class in the world' of the national power grid company, a strong intelligent power grid is particularly important to construct, and in the aspect of guaranteeing the safe and stable operation of a power system, a safety automatic device plays an important role, a backup automatic switching device is taken as a common safety automatic device in the power grid and is closely related to the maintenance work of the power grid by workers, when the export verification of a backup automatic switching function is not carried out, once a working power supply fails, a backup power supply cannot be put into operation in time, serious accidents such as voltage loss of a substation whole station and the like can be caused, the power failure of a user is caused, the stable operation of the power system is influenced, when the workers carry out the backup automatic switching test, due to the influence of the operation mode of the power grid, the operation mode of the backup automatic switching cannot be directly broken and separated to be verified, only the verification of a simulation circuit breaker can be carried, the verification cost of the spare power automatic switching test is increased, so that a large amount of time is consumed in the spare power automatic switching test, and the error occurrence rate in the test process is improved.
Disclosure of Invention
The utility model provides a spare power automatic switching quick testing arrangement has overcome above-mentioned prior art not enough, and it can effectively solve current spare power automatic switching test and can only verify through the analog circuit breaker, because circuit breaker contact figure is few to there is the problem that needs carry out complicated wiring through a plurality of analog circuit breakers and accomplish.
The technical scheme of the utility model is realized through following measure: a spare power automatic switching rapid testing device comprises three testing devices, wherein each testing device comprises a closing loop, a tripping loop, a position locking loop, a tripping display loop and a closing display loop, and the closing loop, the tripping loop, the position locking loop, the tripping display loop and the closing display loop are electrically connected between a positive control bus and a negative control bus;
the switching-on loop comprises a manual switching-on button, a switching-on relay coil, a first normally closed auxiliary contact of the circuit breaker and a spare power automatic switching-on switching-off outlet contact, the manual switching-on button, the switching-on relay coil and the first normally closed auxiliary contact of the circuit breaker are sequentially connected in series, and the spare power automatic switching-on switching-off outlet contact is connected to two ends of the manual switching-on button in parallel;
the tripping loop comprises a manual tripping button, a tripping relay coil, a first normally open auxiliary contact of the circuit breaker and a spare power automatic switching tripping outlet contact, the manual tripping button, the tripping relay coil and the first normally open auxiliary contact of the circuit breaker are sequentially connected in series, and the spare power automatic switching tripping outlet contact is connected in parallel at two ends of the manual tripping button;
the position locking loop comprises a first normally-open auxiliary contact of a closing relay, a circuit breaker coil, a second normally-open auxiliary contact of a circuit breaker and a normally-closed auxiliary contact of a tripping relay, wherein the first normally-open auxiliary contact of the closing relay is connected with the circuit breaker coil in series, and the second normally-open auxiliary contact of the circuit breaker is connected with the normally-closed auxiliary contact of the tripping relay in series and connected to two ends of the first normally-open auxiliary contact of the closing relay in parallel;
the tripping display circuit comprises a breaker second normally closed auxiliary contact and a tripping display unit, and the breaker second normally closed auxiliary contact and the tripping display unit are connected in series;
the closing display circuit comprises a third normally-open auxiliary contact of the circuit breaker and a closing display unit, and the third normally-open auxiliary contact of the circuit breaker and the closing display unit are connected in series.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the closing loop can also comprise a second normally-open auxiliary contact of the closing relay, and the second normally-open auxiliary contact of the closing relay is connected in parallel with two ends of the manual closing button.
The trip circuit may further include a trip relay normally open auxiliary contact connected in parallel to both ends of the manual trip button.
The trip display unit may include a trip voltage dividing resistor and a trip indicating lamp connected in series.
The closing display unit can comprise a closing divider resistor and a closing indicator lamp, and the closing divider resistor and the closing indicator lamp are connected in series.
The testing device also comprises a shell, and the three testing devices are all arranged on the shell.
The utility model has the advantages of reasonable and compact structure, high durability and convenient use, simulate the main power supply respectively through three testing arrangement, section switch and stand-by power supply, and be connected three testing arrangement with the device of being tested fully automatic switching, the main operating fault of simulation, the test is tested the activestandby switching process of the device of being tested fully automatic switching, avoided using a plurality of simulation circuit breakers to carry out complicated wiring and tested, the time of the device test of being fully automatic switching has been reduced, the test procedure of the device of being fully automatic switching has been simplified, the cost of the device test of being fully automatic switching and the error incidence in the test procedure have been reduced.
Drawings
Fig. 1 is the circuit structure schematic diagram of the middle closing loop, the opening loop and the position locking loop of the utility model.
Fig. 2 is the circuit structure schematic diagram of the middle trip display circuit and the closing display circuit of the utility model.
Fig. 3 is the circuit structure schematic diagram of the connection mode of the main power source, the section switch and the standby power source in actual operation.
The codes in the figures are respectively: + KM is a positive control bus; KM is a negative control bus; HA is a manual closing button; HJ is an outlet contact of the spare power automatic switching switch; HQ is a closing relay coil; the HQ1 is a first normally open auxiliary contact of the closing relay; the HQ2 is a second normally open auxiliary contact of the closing relay; TA is a manual tripping button; TJ is an outlet contact of the spare power automatic switching trip; TQ is the tripping relay coil; the TQ1 is a normally open auxiliary contact of the trip relay; TQ2 is the tripping relay normally closed auxiliary contact; DL is a breaker coil; DL1 is breaker first normally closed auxiliary contact; DL2 is the first normally open auxiliary contact of the breaker; DL3 is breaker second normally open auxiliary contact; DL4 is breaker second normally closed auxiliary contact; DL5 is breaker third normally open auxiliary contact; LD is trip indicator light; HD is a closing indicator light; r1 is a tripping voltage dividing resistor; and R2 is a closing divider resistor.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
The invention will be further described with reference to the following examples and drawings:
as shown in fig. 1 and 2, the spare power automatic switching rapid test device comprises three test devices, each test device comprises a closing loop, a tripping loop, a position locking loop, a tripping display loop and a closing display loop, and the closing loop, the tripping loop, the position locking loop, the tripping display loop and the closing display loop are electrically connected between a positive control bus + KM and a negative control bus-KM;
the switching-on loop comprises a manual switching-on button HA, a switching-on relay coil HQ, a first normally closed auxiliary contact DL1 of the circuit breaker and a spare power automatic switching-on switching-off outlet contact HJ, wherein the manual switching-on button HA, the switching-on relay coil HQ and the first normally closed auxiliary contact DL1 of the circuit breaker are sequentially connected in series, and the spare power automatic switching-on switching-off outlet contact HJ is connected in parallel at two ends of the manual switching-on button HA;
the trip loop comprises a manual trip button TA, a trip relay coil TQ, a first normally open auxiliary contact DL2 of the circuit breaker and a spare power automatic switching trip outlet contact TJ, the manual trip button TA, the trip relay coil TQ and the first normally open auxiliary contact DL2 of the circuit breaker are sequentially connected in series, and the spare power automatic switching trip outlet contact TJ is connected in parallel at two ends of the manual trip button TA;
the position locking loop comprises a first normally-open auxiliary contact HQ1 of a closing relay, a breaker coil DL, a second normally-open auxiliary contact DL3 of the breaker and a normally-closed auxiliary contact TQ2 of a tripping relay, wherein the first normally-open auxiliary contact HQ1 of the closing relay and the breaker coil DL are connected in series, and the second normally-open auxiliary contact DL3 of the breaker and the normally-closed auxiliary contact TQ2 of the tripping relay are connected in series and are connected in parallel at two ends of the first normally-open auxiliary contact HQ1 of the closing relay;
the trip display circuit comprises a breaker second normally closed auxiliary contact DL4 and a trip display unit, and the breaker second normally closed auxiliary contact DL4 and the trip display unit are connected in series;
the switch-on display circuit comprises a breaker third normally-open auxiliary contact DL5 and a switch-on display unit, and the breaker third normally-open auxiliary contact DL5 and the switch-on display unit are connected in series.
The manual closing button HA and the manual tripping button TA can adopt the prior known T523B to toggle the contact, and have the characteristics of small shape, reliable and stable output and durability; sending a closing signal to a closing loop by manually pressing a manual closing button HA; the trip signal is sent to the trip circuit by manually pressing the manual trip button TA.
In actual work, a main power supply, a section switch and a standby power supply are connected with a spare power automatic switching device, and the spare power automatic switching device performs main-standby switching, wherein the main power supply, the section switch and the standby power supply are connected in a mode shown in fig. 3, the section switch is connected with a first bus and a second bus, the main power supply is connected with the first bus, and the standby power supply is connected with the second bus.
The main power supply, the section switch, the standby power supply and the automatic bus transfer device share the following four operation modes:
1. the standby power supply is standby, and the main power supply runs with a first bus and a second bus;
2. the main power supply is standby, and the standby power supply is operated with a first bus and a second bus:
3. the main power supply and the standby power supply run, and the section switch is standby;
4. the main power supply and the standby power supply run, and the section switch is standby.
The utility model discloses a main power supply, section switch and stand-by power supply are simulated respectively to three testing arrangement, when carrying out the test of the spare power automatic switching device to be tested, three testing arrangements and three groups of contacts on the spare power automatic switching device to be tested are in one-to-one correspondence, wherein every group of contacts in the spare power automatic switching device to be tested all include spare power automatic switching closing contact, spare power automatic switching tripping contact and position switching-in contact; when the tested spare power automatic switching device is connected with the three testing devices, the spare power automatic switching closing contact and the spare power automatic switching tripping contact on each group of spare power automatic switching devices are correspondingly connected with the spare power automatic switching closing outlet contact HJ and the spare power automatic switching tripping outlet contact TJ of the corresponding testing device, and the position access contact on each group of spare power automatic switching devices is correspondingly connected with the second normally closed auxiliary contact DL4 of the breaker of the corresponding testing device.
For example: the system operates in a first mode, namely a standby power supply is standby, and a main power supply operates with a first bus and a second bus; each group of spare power automatic switching closing contact and spare power automatic switching tripping contact of the tested spare power automatic switching device is correspondingly connected with a spare power automatic switching closing outlet contact HJ and a spare power automatic switching tripping outlet contact TJ of one corresponding testing device, and an opening contact at the position of the tested spare power automatic switching device is correspondingly connected with a second normally closed auxiliary contact DL4 of a breaker of one corresponding testing device. The specific test process is as follows:
1. simulating the operation of a main power supply with a first bus and a second bus, manually pressing a manual closing button HA in a testing device for simulating the main power supply to enable a closing loop to be conducted, exciting a closing relay coil HQ, closing a first normally open auxiliary contact HQ1 of the closing relay, exciting a breaker coil DL, and disconnecting a first normally closed auxiliary contact DL1 of the breaker to enable the closing loop to be disconnected; the second normally open auxiliary contact DL3 of the circuit breaker is closed, and the position locking loop is conducted, so that the second normally open auxiliary contact DL3 of the circuit breaker and the normally closed auxiliary contact TQ2 of the tripping relay form a self-holding loop; the breaker second normally closed auxiliary contact DL4 is disconnected, the breaker third normally open auxiliary contact DL5 is closed, so that the tripping display circuit is disconnected, the closing display circuit is connected, whether the closing display unit displays or not is checked, and if the display is performed, the operation success of the simulation main power supply with the first bus and the second bus is indicated; if the switching-on display unit does not display the switching-on display unit, the fact that the operation of the first bus and the second bus of the main power supply is simulated is represented as unsuccessful, the fact that a fault exists in the testing device is indicated, and a worker conducts fault troubleshooting on the testing device;
2. simulating a main power supply fault, namely manually pressing a manual trip button TA in a testing device for simulating a main power supply, conducting a trip circuit, exciting a trip relay coil TQ, disconnecting a normally closed auxiliary contact TQ2 of the trip relay, disconnecting a position locking circuit, demagnetizing a breaker coil DL, disconnecting a breaker third normally open auxiliary contact DL5, closing a breaker second normally closed auxiliary contact DL4, disconnecting a closing display circuit, conducting the trip display circuit, checking whether a trip display unit displays or not, and if so, indicating that the main power supply fault is simulated successfully; if the tripping display unit does not display the fault, the fault of the simulated main power supply is not successful, the fault exists in the testing device, and a worker carries out fault troubleshooting on the testing device;
3. simulating a section switch fault, namely manually pressing a manual trip button TA in a testing device for simulating the section switch, conducting a trip circuit, exciting a trip relay coil TQ, disconnecting a normally closed auxiliary contact TQ2 of the trip relay, disconnecting a position locking circuit, demagnetizing a breaker coil DL, disconnecting a breaker third normally open auxiliary contact DL5, closing a breaker second normally closed auxiliary contact DL4, disconnecting a closing display circuit, conducting the trip display circuit, checking whether a trip display unit displays or not, and if so, indicating that the section switch fault succeeds; if the tripping display unit does not display the fault, the fault of the analog section switch is not successful, the fault is shown in the testing device, and a worker checks the fault of the testing device;
4. the method comprises the steps that information for simulating a main power supply fault or a sectional switch fault, namely action information of a second normally closed auxiliary contact DL4 of a breaker in a testing device for simulating a main power supply or a testing device for simulating a sectional switch is sent to a tested spare power automatic switching device to participate in logic judgment, so that the tested spare power automatic switching device acts to switch on a spare power supply, namely a spare power automatic switching switch outlet contact HJ in the testing device for simulating the spare power supply is closed, a corresponding switch-on loop is switched on, a switch-on relay coil HQ is excited, a first normally open auxiliary contact HQ1 of a switch-on relay is closed, a breaker coil DL is excited, a first normally closed auxiliary contact DL1 of the breaker is disconnected, and the switch-on loop; the second normally open auxiliary contact DL3 of the circuit breaker is closed, and the position locking loop is conducted, so that the second normally open auxiliary contact DL3 of the circuit breaker and the normally closed auxiliary contact TQ2 of the tripping relay form a self-holding loop; the second normally closed auxiliary contact DL4 of the circuit breaker is disconnected, the third normally open auxiliary contact DL5 of the circuit breaker is closed, so that the tripping display circuit is disconnected, the closing display circuit is connected, whether the closing display unit displays or not is checked, if yes, the fact that the input of the simulated standby power supply is successful is shown, and the tested standby automatic switching device normally completes the main-standby switching; if the switching-on display unit does not display, the switching-on of the simulated standby power supply is not successful, namely the tested spare power automatic switching device does not normally complete the main-standby switching, the fault of the testing device or the fault of the tested spare power automatic switching device is indicated, and a worker carries out fault troubleshooting on the testing device or the tested spare power automatic switching device.
The second operation mode is that the main power supply is standby, and the standby power supply is provided with a first bus and a second bus for operation; the test process of the tested backup power automatic switching device when running in the second running mode is the same as the test process of the tested backup power automatic switching device when running in the first running mode, and details are not repeated here.
For example: the operation is carried out in a third mode or a fourth mode, namely, the main power supply and the standby power supply are both operated and are standby in sections; each group of spare power automatic switching closing contact and spare power automatic switching tripping contact of the tested spare power automatic switching device is correspondingly connected with a spare power automatic switching closing outlet contact HJ and a spare power automatic switching tripping outlet contact TJ of one corresponding testing device, and an opening contact at the position of the tested spare power automatic switching device is correspondingly connected with a second normally closed auxiliary contact DL4 of a breaker of one corresponding testing device. The specific test process is as follows:
1. simulating the operation of a main power supply, manually pressing a manual closing button HA in a testing device for simulating the main power supply to enable a closing loop to be conducted, exciting a closing relay coil HQ, closing a first normally open auxiliary contact HQ1 of the closing relay, exciting a breaker coil DL, and disconnecting a first normally closed auxiliary contact DL1 of a breaker to enable the closing loop to be disconnected; the second normally open auxiliary contact DL3 of the circuit breaker is closed, and the position locking loop is conducted, so that the second normally open auxiliary contact DL3 of the circuit breaker and the normally closed auxiliary contact TQ2 of the tripping relay form a self-holding loop; the breaker second normally closed auxiliary contact DL4 is disconnected, the breaker third normally open auxiliary contact DL5 is closed, so that the tripping display circuit is disconnected, the closing display circuit is connected, whether the closing display unit displays or not is checked, and if the display is displayed, the simulation main power supply is successfully operated; if the switching-on display unit does not display the fault, the switching-on display unit indicates that the operation of the simulated main power supply is unsuccessful, the fault exists in the testing device, and a worker checks and eliminates the fault on the testing device;
2. simulating the operation of a standby power supply, manually pressing a manual closing button HA in a testing device for simulating the standby power supply to enable a closing loop to be conducted, exciting a closing relay coil HQ, closing a first normally open auxiliary contact HQ1 of the closing relay, exciting a breaker coil DL, disconnecting a first normally closed auxiliary contact DL1 of the breaker and enabling the closing loop to be disconnected; the second normally open auxiliary contact DL3 of the circuit breaker is closed, and the position locking loop is conducted, so that the second normally open auxiliary contact DL3 of the circuit breaker and the normally closed auxiliary contact TQ2 of the tripping relay form a self-holding loop; the breaker second normally closed auxiliary contact DL4 is disconnected, the breaker third normally open auxiliary contact DL5 is closed, so that the tripping display circuit is disconnected, the closing display circuit is connected, whether the closing display unit displays or not is checked, and if the closing display unit displays, the operation success of the simulated standby power supply is indicated; if the switching-on display unit does not display the fault, the switching-on display unit indicates that the operation of the simulated standby power supply is unsuccessful, the fault exists in the testing device, and a worker checks and eliminates the fault on the testing device;
3. simulating the first voltage loss of a bus, namely the failure of the main power supply, manually pressing a manual trip button TA in a testing device for simulating the main power supply, conducting a trip circuit, exciting a trip relay coil TQ, disconnecting a trip relay normally closed auxiliary contact TQ2, disconnecting a position locking circuit, demagnetizing a breaker coil DL, disconnecting a breaker third normally open auxiliary contact DL5, closing a breaker second normally closed auxiliary contact DL4, disconnecting a closing display circuit, conducting the trip display circuit, checking whether a trip display unit displays or not, and if so, indicating that the first voltage loss of the bus is successful, namely the failure of the main power supply; if the tripping display unit does not display the voltage, the voltage of the simulation bus is not successful, namely the main power supply is not put into a fault, the fault is shown in the testing device, and a worker checks and eliminates the fault on the testing device;
4. simulating the second voltage loss of the bus, namely the standby power supply is put into failure, namely manually pressing a manual tripping button TA in a testing device for simulating the standby power supply, so that a tripping loop is conducted, a tripping relay coil TQ is excited, a tripping relay normally-closed auxiliary contact TQ2 is disconnected, a position locking loop is disconnected, a breaker coil DL is demagnetized, a breaker third normally-open auxiliary contact DL5 is disconnected, a breaker second normally-closed auxiliary contact DL4 is closed, a closing display loop is disconnected, a tripping display loop is conducted, whether a tripping display unit displays or not is checked, and if the voltage loss is displayed, the second voltage loss of the bus is successfully simulated, namely the standby power supply is put into failure; if the tripping display unit does not display the voltage, the voltage of the second simulation bus is not successfully lost, namely the standby power supply is not put into a fault, the fact that the fault exists in the testing device is indicated, and a worker checks and eliminates the fault on the testing device;
5. the method comprises the steps that information for simulating the first voltage loss or the second voltage loss of a bus, namely action information of a second normally closed auxiliary contact DL4 of a breaker in a testing device for simulating a main power supply or a testing device for simulating a standby power supply is sent to a tested standby automatic switching device to participate in logic judgment, so that the tested standby automatic switching device acts to switch on a section switch, namely a standby automatic switching switch outlet contact HJ in the testing device for switching on the simulation section switch is closed, a switch-on loop is switched on, a switch-on relay coil HQ is excited, a first normally open auxiliary contact HQ1 of a switch-on relay is closed, a breaker coil DL is excited, a first normally closed auxiliary contact DL1 of the breaker is switched off, and the switch-on loop is switched; the second normally open auxiliary contact DL3 of the circuit breaker is closed, and the position locking loop is conducted, so that the second normally open auxiliary contact DL3 of the circuit breaker and the normally closed auxiliary contact TQ2 of the tripping relay form a self-holding loop; the breaker second normally closed auxiliary contact DL4 is disconnected, the breaker third normally open auxiliary contact DL5 is closed, so that the trip display circuit is disconnected, the closing display circuit is connected, whether the closing display unit displays or not is checked, if yes, the fact that the analog section switch is successfully put into operation is shown, and the tested spare power automatic switching device normally completes the main-spare switching; if the switching-on display unit does not display the switching-on state, the fact that the analog section switch is not successfully switched is indicated, the tested spare power automatic switching device does not normally complete the main-standby switching, the fault of the testing device or the fault of the tested spare power automatic switching device is indicated, and a worker checks and troubleshooting the testing device or the tested spare power automatic switching device.
To sum up the utility model has the advantages of reasonable and compact structure, high durability and convenient use, simulate the main power supply respectively through three testing arrangement, section switch and stand-by power supply, and be connected three testing arrangement with being surveyed the device of hauling oneself willingly into fully, the main operation trouble of simulation, the test is surveyed the activestandby switching process of hauling oneself willingly into fully, avoided using a plurality of simulation circuit breakers to carry out complicated wiring and tested, the time of hauling oneself willingly into fully to have been reduced, the test procedure of hauling oneself willingly into fully has been simplified, the cost of hauled willingly into fully and the error incidence in the test procedure have been reduced.
The spare power automatic switching rapid testing device can be further optimized or/and improved according to actual needs:
as shown in fig. 1, the closing circuit further includes a second normally open auxiliary contact HQ2 of the closing relay, and the second normally open auxiliary contact HQ2 of the closing relay is connected in parallel to two ends of the manual closing button HA.
The manual switch-on button HA is manually pressed, a switch-on relay coil HQ is excited, a first normally-open auxiliary contact HQ1 of the switch-on relay is closed, when the first normally-open auxiliary contact HQ1 of the switch-on relay is restored to an off state from closed, a breaker coil DL is not electrified and excited, therefore, a switch-on loop is kept on by setting a second normally-open auxiliary contact HQ2 of the switch-on relay to be closed, and the breaker coil DL is electrified and excited conveniently.
As shown in fig. 1, the trip circuit further includes a trip relay normally open auxiliary contact TQ1, and the trip relay normally open auxiliary contact TQ1 is connected in parallel across the manual trip button TA.
The manual tripping button TA is manually pressed, the tripping relay coil TQ is excited, the normally closed auxiliary contact TQ2 of the tripping relay is disconnected, and in order to prevent the normally closed auxiliary contact TQ2 of the tripping relay from being restored to a closed state from disconnection, the coil DL of the circuit breaker does not lose power and lose magnetism, therefore, the normally open auxiliary contact TQ1 of the tripping relay is closed to keep a tripping loop on, so that the normally closed auxiliary contact TQ2 of the tripping relay is disconnected, and the coil DL of the circuit breaker is convenient to lose power and lose magnetism.
As shown in fig. 2, the trip display unit includes a trip voltage dividing resistor R1 and a trip indicating lamp LD, and the trip voltage dividing resistor R1 and the trip indicating lamp LD are connected in series.
The trip indicating lamp LD can use the existing known LED colored lamps, has small installation size, reliable quality and easy distinction, when the main power supply or the standby power supply or the sectional switch is in a trip state, the trip display loop of the main power supply or the standby power supply or the sectional switch is conducted, and the trip indicating lamp LD is lightened, so that a worker can visually judge the switching-in state of the main power supply or the standby power supply or the sectional switch from the state of the trip indicating lamp LD.
As shown in fig. 2, the closing display unit includes a closing divider resistor R2 and a closing indicator lamp HD, and the closing divider resistor R2 and the closing indicator lamp HD are connected in series.
The closing indicator lamp HD can use the existing known LED colored lamps, is small in installation size, reliable in quality and easy to distinguish, when the main power supply or the standby power supply or the section switch is in a closing state, a closing display loop of the main power supply or the standby power supply or the section switch is conducted, and the closing indicator lamp HD is turned on, so that a worker can judge the switching-on state of the main power supply or the standby power supply or the section switch visually from the state of the closing indicator lamp HD.
In order to facilitate the checking of the working personnel, the tripping indicator lamp LD and the closing indicator lamp HD can be set to different colors for displaying.
As shown in fig. 1 and 2, the testing device further comprises a shell, and the three testing devices are all arranged on the shell.
The shell is made of the existing well-known ABS plastic, and has the characteristics of reliable quality, safety, no toxicity, flame retardance, water resistance and the like.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (10)
1. A spare power automatic switching rapid testing device is characterized by comprising three testing devices, wherein each testing device comprises a closing loop, a tripping loop, a position locking loop, a tripping display loop and a closing display loop, and the closing loop, the tripping loop, the position locking loop, the tripping display loop and the closing display loop are electrically connected between a positive control bus and a negative control bus;
the switching-on loop comprises a manual switching-on button, a switching-on relay coil, a first normally closed auxiliary contact of the circuit breaker and a spare power automatic switching-on switching-off outlet contact, the manual switching-on button, the switching-on relay coil and the first normally closed auxiliary contact of the circuit breaker are sequentially connected in series, and the spare power automatic switching-on switching-off outlet contact is connected to two ends of the manual switching-on button in parallel;
the tripping loop comprises a manual tripping button, a tripping relay coil, a first normally open auxiliary contact of the circuit breaker and a spare power automatic switching tripping outlet contact, the manual tripping button, the tripping relay coil and the first normally open auxiliary contact of the circuit breaker are sequentially connected in series, and the spare power automatic switching tripping outlet contact is connected in parallel at two ends of the manual tripping button;
the position locking loop comprises a first normally-open auxiliary contact of a closing relay, a circuit breaker coil, a second normally-open auxiliary contact of a circuit breaker and a normally-closed auxiliary contact of a tripping relay, wherein the first normally-open auxiliary contact of the closing relay is connected with the circuit breaker coil in series, and the second normally-open auxiliary contact of the circuit breaker is connected with the normally-closed auxiliary contact of the tripping relay in series and connected to two ends of the first normally-open auxiliary contact of the closing relay in parallel;
the tripping display circuit comprises a breaker second normally closed auxiliary contact and a tripping display unit, and the breaker second normally closed auxiliary contact and the tripping display unit are connected in series;
the closing display circuit comprises a third normally-open auxiliary contact of the circuit breaker and a closing display unit, and the third normally-open auxiliary contact of the circuit breaker and the closing display unit are connected in series.
2. The automatic bus transfer rapid testing device according to claim 1, wherein the switching-on loop further comprises a second normally-open auxiliary contact of the switching-on relay, and the second normally-open auxiliary contact of the switching-on relay is connected in parallel with two ends of the manual switching-on button.
3. The automatic power switching quick test device according to claim 1 or 2, wherein the trip circuit further comprises a trip relay normally open auxiliary contact, and the trip relay normally open auxiliary contact is connected in parallel with two ends of the manual trip button.
4. The automatic power switching quick test device as claimed in claim 1 or 2, wherein the trip display unit comprises a trip voltage dividing resistor and a trip indicator lamp, and the trip voltage dividing resistor and the trip indicator lamp are connected in series.
5. The automatic power switching quick test device as claimed in claim 3, wherein the trip display unit comprises a trip voltage dividing resistor and a trip indicator light, and the trip voltage dividing resistor and the trip indicator light are connected in series.
6. The automatic bus transfer rapid testing device according to claim 1, 2 or 5, wherein the switch-on display unit comprises a switch-on voltage dividing resistor and a switch-on indicator lamp, and the switch-on voltage dividing resistor and the switch-on indicator lamp are connected in series.
7. The automatic bus transfer rapid testing device according to claim 3, wherein the switch-on display unit comprises a switch-on divider resistor and a switch-on indicator lamp, and the switch-on divider resistor and the switch-on indicator lamp are connected in series.
8. The automatic bus transfer rapid testing device according to claim 4, wherein the switch-on display unit comprises a switch-on divider resistor and a switch-on indicator lamp, and the switch-on divider resistor and the switch-on indicator lamp are connected in series.
9. The automatic power switching device rapid test device as claimed in claim 1, 2, 5, 7 or 8, characterized by further comprising a housing, and all three test devices are mounted on the housing.
10. The automatic power switching rapid test device as claimed in claim 6, further comprising a housing, wherein all three test devices are mounted on the housing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022357072.5U CN212379506U (en) | 2020-10-21 | 2020-10-21 | Spare power automatic switching rapid testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022357072.5U CN212379506U (en) | 2020-10-21 | 2020-10-21 | Spare power automatic switching rapid testing device |
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| Publication Number | Publication Date |
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| CN212379506U true CN212379506U (en) | 2021-01-19 |
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| CN202022357072.5U Active CN212379506U (en) | 2020-10-21 | 2020-10-21 | Spare power automatic switching rapid testing device |
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| CN (1) | CN212379506U (en) |
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