CN201993444U - Relay testing device and system - Google Patents
Relay testing device and system Download PDFInfo
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- CN201993444U CN201993444U CN2010206496440U CN201020649644U CN201993444U CN 201993444 U CN201993444 U CN 201993444U CN 2010206496440 U CN2010206496440 U CN 2010206496440U CN 201020649644 U CN201020649644 U CN 201020649644U CN 201993444 U CN201993444 U CN 201993444U
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Abstract
The utility model discloses a relay testing device and a system. The device comprises a detection processing unit, a program-controlled direct-current power supply, a program-controlled alternating-current power supply, an analog load, a contact feedback device, a resistance measuring device and a relay connecting end. The detection processing unit is connected with the program-controlled direct-current power supply, the program-controlled alternating-current power supply, the analog load, the contact feedback device and the resistance measuring device, and the program-controlled direct-current power supply, the program-controlled alternating-current power supply, a power supply polarity switching device, the analog load, the contact feedback device and the resistance measuring device are connected with the relay connecting end; and the detection processing unit is used for controlling direct-current power provided by the program-controlled direct-current power supply for a relay to be tested, alternating-current power provided by the program-controlled alternating-current power supply for the relay to be tested and over current provided by the analog load for the relay to be tested according to received external control commands, the contact feedback device is used for returning contact feedback signals to the detection processing unit, and the detection processing unit is used for generating testing results and reading measurement results generated by the resistance measuring device.
Description
Technical field
The utility model about the measuring technology of electronic electric energy meter with magnetic latching relay, is a kind of relay test set and system particularly about the relay testing technique of electric system concretely.
Background technology
Magnetic latching relay has stronger magnetic hold facility, can move under the effect of pulse, and have low in energy consumption, highly sensitive, characteristics such as volume is little and the contact contact stabilization is good.In view of above advantage and characteristic, magnetic latching relay is introduced in the electronic electric energy meter power path, with reliability that increases the electric energy meter operation and the power consumption that reduces electric energy meter self.
At present, the magnetic latching relay that uses in the electronic electric energy meter is from different manufacturers both at home and abroad, properties of product differ greatly, problems such as can not reliably cut-off, power consumption is big appears in some relay, can not satisfy the requirement of electric energy meter actual motion, function and performance to electronic electric energy meter realize causing a hidden trouble, so must test the magnetic latching relay that electronic electric energy meter is used.
Though the present domestic correlation technique standard that has pair electronic electric energy meter to detect with magnetic latching relay, but during actual detected, unripe pick-up unit, the subject matter that present pick-up unit exists has: one, test item is single, can only carry out easy detection to the partial parameters of relay; Two, testing process can not realize robotization, and data need artificial treatment and analysis, and testing result has various randomnesss, artificial property, inefficiency; Three, in the testing process, voltage is higher, electric current is bigger, and people and equipment are lacked corresponding protection, therefore detects security and also can not get guaranteeing.
The utility model content
The utility model provides a kind of relay test set, by this equipment relay is carried out electric performance test, life test and security performance test.
One of the purpose of this utility model provides a kind of relay test set, and this equipment comprises: detect treating apparatus, programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus and relay link; Detect treating apparatus and be connected with programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus, programme-controlled dc power, program control AC power, electric power polarity switching device shifter, fictitious load, contact feedback assembly, electric resistance measuring apparatus are connected with the relay link; The external control order control programme-controlled dc power that detection processing unit basis receives offers the direct supply of measured relay, program control AC power offers the AC power of measured relay and the excess current that fictitious load offers measured relay, the contact feedback assembly detects the contact action of measured relay and returns the contact feedback signal to detecting processing unit, detect treating apparatus and generate test result, and read the measurement result that electric resistance measuring apparatus generates according to the contact feedback signal that receives.
One of the purpose of this utility model provides a kind of relay test macro, and this system comprises: main control computer and relay test set, main control computer are used for relay test set is controlled; This relay test set comprises: detect treating apparatus, programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus and relay link; Detect treating apparatus and be connected with programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus, programme-controlled dc power, program control AC power, electric power polarity switching device shifter, fictitious load, contact feedback assembly, electric resistance measuring apparatus are connected with the relay link; The external control order control programme-controlled dc power that detection processing unit basis receives offers the direct supply of measured relay, program control AC power offers the AC power of measured relay and the excess current that fictitious load offers measured relay, the contact feedback assembly detects the contact action of measured relay and returns the contact feedback signal to detecting processing unit, detect treating apparatus and generate test result, and read the measurement result that electric resistance measuring apparatus generates according to the contact feedback signal that receives.
Can realize electric performance test, life test and security performance test by the utility model to magnetic latching relay, realized integration test to each test event, by with master cpu between communicate by letter, direct collecting test data, raise the efficiency, by master cpu control operation relay, exempted the manually operated process of staff, improved security.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The block diagram that Fig. 1 is connected with measured relay for the utility model relay test set;
Fig. 2 is the structured flowchart of the detection treating apparatus of the utility model relay test set;
The synoptic diagram that Fig. 3 is connected with remote computer by Ethernet for relay test set;
Fig. 4 is a structural representation of the present utility model;
Fig. 5 is the structured flowchart of relay link of the present utility model;
The process flow diagram of Fig. 6 for the operation voltage of relay is tested;
Fig. 7 is the structural representation of the utility model embodiment;
Fig. 8 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the block diagram that is connected with measured relay of the utility model relay test set.Among Fig. 1, relay test set of the present utility model comprises: detect treating apparatus 101, programme-controlled dc power 102, electric power polarity switching device shifter 103, relay link 104, contact feedback assembly 105, fictitious load 106, program control AC power 107 and electric resistance measuring apparatus 108.
Detect treating apparatus 101 and be used for corresponding device thereof being controlled, carry out corresponding functional test according to the control command of outside input.Programme-controlled dc power 102 is used to the Inside coil of measured relay that working power is provided; Electric power polarity switching device shifter 103, thus switch the folding of polarity of voltage control measured relay of the Inside coil of measured relay according to detecting control command that treating apparatus 101 receives; Relay link 104 is connected the utility model relay test set by relay link 104 with measured relay; Contact feedback assembly 105, whether move the contact that is used to detect measured relay, returns the contact feedback signal to detecting treating apparatus 101; Fictitious load 106 provides big electric current for relay when carrying out load testing; Program control AC power 107 is for measured relay provides AC driven power; Electric resistance measuring apparatus 108, the contact resistance of measurement measured relay contact.
Wherein, as shown in Figure 2, above-mentioned detection treating apparatus 101 comprises: detect command reception unit 1011, receive the detection control command that external unit sends; Detect power control unit 1012, control voltage, the current value that program control DC voltage 102, program control AC power 107 and fictitious load 108 are applied to measured relay according to the control command that receives; Detection signal collecting unit 1013 receives contact feedback signal that the contact feedback assembly returns, reads the resistance value that electric resistance measuring apparatus is measured according to control command; And testing result generation unit 1014, generate testing result returning to external opertaing device according to the contact feedback signal that receives, the resistance value that reads.
In the practical application, the utility model relay test set can be connected with a remote computer by Ethernet, as shown in Figure 3, by the work of remote computer pilot relay testing apparatus.As passing through configuration in advance, in remote computer, store different relay types and test events and corresponding relays parameter and test parameter are set, when adopting the utility model relay test set that relay is tested, select tested relay types and test event by remote computer, remote computer generates control command according to measured relay type and the test event that the user selects, and relay test set is controlled each device according to the control command that receives.With concrete test event the utility model relay test set is described in further details below.
Embodiment 1
In the actual application, when magnetic latching relay was carried out electric performance test, the connection diagram of relay test set inside as shown in Figure 4.Adopt master cpu 401 as detecting treating apparatus 101, ohmmeter 404 is as electric resistance measuring apparatus 108, and magnetic latching relay driving switch 406 is as electric power polarity switching device shifter 103, by the motion time measurement of time set 405 realizations to magnetic latching relay.Time set 405, magnetic latching relay driving switch 406, contact feedback assembly 105 and fictitious load 106 directly are connected with master cpu 401.Contact master cpu 401 is by electronic switch 409 control program control alternating voltage 107 of gating and programme-controlled dc powers 102, and program control alternating voltage 107, programme-controlled dc power 102 and ohmmeter 404 all are connected with electronic switch 409 by 232 interfaces.
As shown in Figure 5, relay link 104 of the present utility model comprises, resistance measurement link 1041, AC power link 1042, direct supply link 1043, fictitious load link 1044 and contact feedback link 1045.The ohmmeter test pencil that can adopt ohmmeter 404 in the present embodiment is as the resistance measurement link, the alternating current extension line of program control AC power 107 is as AC power link 1042, the voltage extension line of programme-controlled dc power is as direct supply link 1043, and the electric current line of fictitious load 106 is as fictitious load link 1044.Can the link of each device be connected to the terminals of measured relay coil in the present embodiment by lead with crocodile clip.Be that example is described in further details the utility model with the concrete operations that magnetic latching relay is tested below, wherein, magnetic latching relay carried out electric performance test comprise:
1, the contact contact resistance of magnetic latching relay is tested
At first tested magnetic latching relay contact is in closure state, magnetic latching relay is fixed on the proving installation, the test test pencil of ohmmeter 404 is connected to the two ends of measured relay exit point.
The user selects tested relay types by remote computer, according to preliminary election selection measured relay type is set and generates control command, master cpu 401 is according to control command gating electronic switch 409, realization is connected with ohmmeter 404, the ohmic value of ohmmeter 404 busy relay contacts, the measured value that master cpu 401 reads ohmmeter 404 generates test result, and just test result is uploaded to remote computer by Ethernet.
2, magnetic latching relay operation voltage value is tested
At first keep the magnetic latching relay contact to be in off-state, the direct supply link 1043 of programme-controlled dc power 102 is connected on the magnetic latching relay drive coil.The contact feedback link 1045 of relay test set is received on the contact of magnetic latching relay.
Concrete steps as shown in Figure 6, master cpu 401 is according to the external control order, communicate by letter with programme-controlled dc power 102, make magnetic latching relay voltage progressively raise (step S101), whether master cpu 401 detects receives contact feedback signal (step S102), when reaching actuating of relay voltage, relay contact closure, the action that contact feedback link 1045 detects relay contact generates the contact feedback signal, master cpu 401 reads the magnitude of voltage (step S103) of programme-controlled dc power 102 this moment, be the operation voltage value of relay, i.e. pickup value.Reach relay contact closure behind the actuating of relay voltage, master cpu is by magnetic latching relay driving switch 406 counter-rotating relay coil both end voltage polarity, progressively increase the voltage of programme-controlled dc power 102 once more, relay contact disconnects, the action that contact feedback link 1045 detects relay contact generates the contact feedback signal, master cpu 401 reads the magnitude of voltage of programme-controlled dc power 102 this moment, and this value is the counteragent magnitude of voltage of relay, i.e. release value.
3, magnetic latching relay is tested actuation time
Programme-controlled dc power 102 is received on the tested magnetic latching relay drive coil by electric power polarity switching device shifter 103, and the contact of relay test set feedback link 1045 is received on the contact of magnetic latching relay.The control command that master cpu 401 bases receive is determined the rated voltage of tested magnetic latching relay, and master cpu 401 is communicated by letter with programme-controlled dc power 102, the voltage of programme-controlled dc power 102 is elevated to the rated voltage of magnetic latching relay.There is the power supply fling-cut switch electric power polarity switching device shifter 103 inside, the input or the disconnection of control programme-controlled dc power and offer the polarity of the direct supply of measured relay.The power supply fling-cut switch of master cpu 401 control electric power polarity switching device shifter inside makes its closure, and master cpu 401 startup time sets 405 pick up counting simultaneously.The actuating of relay, the optocoupler conducting of feedback assembly inside, contact is sent relay action signal to master cpu 401.Master cpu 401 is received the contact feedback signal, makes time set 405 stop timing.The timing time of time set 405 is exactly the actuation time of magnetic latching relay.
Life test to magnetic latching relay comprises:
1, the electric life of magnetic latching relay is tested; 2, to testing the mechanical life of magnetic latching relay.
As follows to the concrete operations that the electric life of magnetic latching relay is tested:
Elder generation is connected to the extension line of the programme-controlled dc power 102 of proving installation on the magnetic latching relay drive coil through magnetic latching relay switch 406, and the link of fictitious load 106 and contact feedback assembly 105 is connected on the contact of relay.Fictitious load 106 is used to measured relay that operating load is provided, the duty of simulation magnetic latching relay.The control command that master cpu 401 sends according to the outside is determined contact rated voltage, the rated current of measured relay, action frequency and the action interval time, by master cpu 401 and programme-controlled dc power 102 and fictitious load 106, setting is loaded into the voltage of magnetic latching relay drive coil and the electric current of relay contact, master cpu 401 carries out the electric life test by controlling the action frequency of magnetic latching relay and actuation time at interval with communicating by letter of magnetic latching relay switch 406 to magnetic latching relay.
Equally, magnetic latching relay is carried out test mechanical life, at first the extension line with the programme-controlled dc power 102 of proving installation is connected on the magnetic latching relay drive coil through magnetic latching relay switch 406, and the contact of proving installation feedback link is received on the contact of relay.The control command that master cpu 401 sends according to the outside is determined contact rated voltage, the action frequency of measured relay and is moved interval time, set the voltage that is loaded into the magnetic latching relay drive coil by master cpu 401 and programme-controlled dc power 102, the magnetic latching relay driving switch is an electronic switch, two control ends are arranged, when two control ends alternately were high-low level, the electric power polarity of magnetic latching relay driving switch output also switched.Master cpu 401 by with the action frequency of the Control on Communication magnetic latching relay of magnetic latching relay driving switch 406 and actuation time at interval, magnetic latching relay is carried out test mechanical life.Can also realize the overload of magnetic latching relay is tested by relay test set of the present utility model, concrete operations are as follows:
At first the extension line with the programme-controlled dc power 102 of proving installation is connected on the magnetic latching relay drive coil through magnetic latching relay switch 406, and the end line that is connected of fictitious load 106 and contact feedback assembly is received on the contact of relay.Master cpu 401 is determined the rated voltage of measured relay according to control command, by being set at rated voltage with the voltage of communicating by letter the relay drive coil of programme-controlled dc power 102, applies the overload electric current by 106 pairs of measured relay contacts of fictitious load.The concrete scheme of test is as follows:
Scheme one: fictitious load 106 output currents are set at 1.5 times of relay contact rated current.By the external control device, set magnetic latching relay coil rating operation voltage, action frequency 100 times, operating frequency is per minute 10 times;
Scheme two: fictitious load 106 output currents are set at 30 times of relay contact rated current.By the external control device, set magnetic latching relay coil rating operation voltage, be 10ms actuation time, 2min acts on 3 times at interval.
When carrying out the overload test, can select above-mentioned testing scheme according to the test needs, in the action that the master cpu 401 control magnetic latching relay time intervals in accordance with regulations do not stop, finish the specified action number of times, or magnetic latching relay can not disconnect reliably or stop action when closed.At this moment, externally show the number of times that success is moved on the control device,,, then carry out contact damage situations inspection if action frequency equals the number of times of scheme regulation if action frequency is then pointed out " undesirable " less than the number of times of scheme regulation.
In the present embodiment, master cpu 401 is connected with remote computer, by remote computer test parameter can be set, and can receive the test result that master cpu 401 generates.By relay test set of the present utility model, can realize electric performance test, life test and security performance test to magnetic latching relay, by remote computer control operation relay, exempt the manually operated process of staff, improved processing safety and precision of test result.
Embodiment 2
As shown in Figure 7, relay test set of the present utility model also comprises 485 interfaces 701 and the carrier interface 702 that communicates with electric energy meter, utilize this communication interface to be connected and communicate, can realize life test and overload test the relay in the electronic electric energy meter with the electronic electric energy meter communication terminal.
When the electric energy meter by RS485 communication is carried out mechanical test, the RS485 communication interface 701 of proving installation is connected on 485 communication terminal of electric energy meter, the extension line of program control AC power 107 is connected on the voltage circuit of electric energy meter, apply rated voltage to electric energy meter, master cpu 401 communicates with electric energy meter, relay test mechanical life is carried out in not stopping, breaking of the interior magnetic latching relay contact of control electric energy meter.
When carrying out the electric life test, the RS485 communication interface of test board is connected on the RS485 communication terminal of electric energy meter, the RS485 communication interface of proving installation is connected on 485 communication terminal of electric energy meter, the extension line of program control AC power 107 is connected to the voltage circuit of electric energy meter, the extension line of fictitious load 106 is connected on the current return of electric energy meter, apply rated voltage to electric energy meter, rated current, master cpu 401 communicates with electric energy meter, not stopping of the interior magnetic latching relay contact of control electric energy meter is disconnected, realizes the electric life test to the magnetic latching relay of electric energy meter.
When the magnetic latching relay of electronic electric energy meter is carried out the overload test, the RS485 communication interface is connected on 485 communication terminal of electric energy meter, apply the overload electric current for the electric energy meter current return, master cpu and electric energy meter communicate, not stopping of the interior magnetic latching relay contact of control electric energy meter is disconnected, carries out relay overload test.
By the communication interface that communicates with electric energy meter, can directly test the relay in the electric energy meter, need not the dismounting of the relay in the electric energy meter is tested, can be used for the preceding detection of the on-the-spot installation of electronic electric energy meter, guarantee that the relay of electronic electric energy meter satisfies the requirement of relevant criterion, increase work efficiency, to laying the foundation smoothly of power marketing.
In the above-described embodiment, control by control magnetic latching relay driving switch realizes control that the contact of magnetic latching relay is cut-off, shown in 8, in proving installation of the present utility model, adopt AC relay driving switch 801, can realize some performance tests AC relay.
Proving installation of the present utility model not only can be finished electric performance test, life test and the security performance test of electronic electric energy meter with magnetic latching relay, can also carry out subtest with the environmental suitability of magnetic latching relay to electronic electric energy meter, thereby realize the integrated of multinomial test function; This device can also be by the action of cut-offfing of communicating by letter with magnetic latching relay in the control table of modes such as RS485, carrier wave and electronic electric energy meter, realization can be examined the cooperation of electric energy meter relay circuit and relay control circuit software and hardware simultaneously to the automatic test of magnetic latching relay life-span and overload capability in the electronic electric energy meter; This device is provided with test parameter and testing process by palm machine or computer, has realized whole robotizations of test process, has improved testing efficiency, has guaranteed tester's safety; This device can be realized automatic preservation, the processing of test result data, can also generate test report automatically according to masterplate, has guaranteed the reliability of data; This device can also be tested some common AC relay in addition.
Used specific embodiment in the utility model principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a relay test set is characterized in that, described equipment comprises: detect treating apparatus, programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus and relay link;
Described detection treating apparatus is connected with described programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus, and described programme-controlled dc power, program control AC power, electric power polarity switching device shifter, fictitious load, contact feedback assembly, electric resistance measuring apparatus are connected with measured relay by described relay link;
Described detection processing unit is controlled the excess current that direct supply that described programme-controlled dc power offers measured relay, AC power that described program control AC power offers measured relay and described fictitious load offer measured relay according to the external control order that receives, described contact feedback assembly detects the contact action of measured relay and returns the contact feedback signal to detecting processing unit, described detection treating apparatus generates test result according to the contact feedback signal that receives, and reads the measurement result that electric resistance measuring apparatus generates.
2. relay test set as claimed in claim 1 is characterized in that, described equipment also comprises: the electric power polarity switching device shifter, and control the input or the disconnection of described programme-controlled dc power and offer the polarity of the direct supply of measured relay.
3. relay test set as claimed in claim 1 is characterized in that, described detection treating apparatus comprises:
Detect the command reception unit, receive the detection control command that external unit sends;
Detect power control unit, control voltage, the current value that program control DC voltage, program control AC power and fictitious load offer measured relay according to the control command that receives;
The detection signal collecting unit receives contact feedback signal that described contact feedback assembly returns, reads the resistance value that electric resistance measuring apparatus is measured;
The testing result generation unit generates testing result returning to external opertaing device according to the contact feedback signal that receives, the resistance value that reads.
4. relay test set as claimed in claim 1 is characterized in that, described relay link comprises:
The resistance measurement link is connected to measured relay with described electric resistance measuring apparatus;
The AC power link is connected to measured relay with described AC power;
The direct supply link is connected to measured relay with described direct supply;
The fictitious load link is connected to measured relay with described fictitious load;
Contact feedback link is connected to measured relay with described contact feedback assembly.
5. relay test set as claimed in claim 1, it is characterized in that, described equipment also comprises: electronic switch is connected with described detection treating apparatus according to the described programme-controlled dc power of external control command strobes, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus.
6. relay test set as claimed in claim 5 is characterized in that, described electronic switch is connected by 232 interface realizations and programme-controlled dc power, program control AC power and electric resistance measuring apparatus.
7. relay test set as claimed in claim 1 is characterized in that, described equipment also comprises:
The electric energy meter communication port is connected described relay test set with electric energy meter, the relay of electric energy meter is tested.
8. relay test set as claimed in claim 1 is characterized in that, described equipment comprises:
Time set, the actuation time of measuring measured relay.
9. a relay test macro is characterized in that, described system comprises: main control computer and relay test set, described remote computer are used for described relay test set is controlled; Wherein,
Described relay test set comprises:
Detect treating apparatus, programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus and relay link;
Described detection treating apparatus is connected with described programme-controlled dc power, program control AC power, fictitious load, contact feedback assembly, electric resistance measuring apparatus, and described programme-controlled dc power, program control AC power, electric power polarity switching device shifter, fictitious load, contact feedback assembly, electric resistance measuring apparatus are connected with the relay link;
Described detection processing unit is controlled the excess current that direct supply that described programme-controlled dc power offers measured relay, AC power that described program control AC power offers measured relay and described fictitious load offer measured relay according to the external control order that receives, described contact feedback assembly detects the contact action of measured relay and returns the contact feedback signal to detecting processing unit, described detection treating apparatus generates test result according to the contact feedback signal that receives, and reads the measurement result that electric resistance measuring apparatus generates.
10. relay test macro as claimed in claim 9 is characterized in that described relay test set is connected with remote computer by Ethernet.
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| CN2010206496440U CN201993444U (en) | 2010-12-09 | 2010-12-09 | Relay testing device and system |
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| CN2010206496440U CN201993444U (en) | 2010-12-09 | 2010-12-09 | Relay testing device and system |
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-
2010
- 2010-12-09 CN CN2010206496440U patent/CN201993444U/en not_active Expired - Lifetime
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