CN106371009A - Test device and test method of safety type relay - Google Patents
Test device and test method of safety type relay Download PDFInfo
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- CN106371009A CN106371009A CN201610847392.4A CN201610847392A CN106371009A CN 106371009 A CN106371009 A CN 106371009A CN 201610847392 A CN201610847392 A CN 201610847392A CN 106371009 A CN106371009 A CN 106371009A
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- Prior art keywords
- relay
- light emitting
- group
- supply circuit
- current supply
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
Abstract
The invention provides a test device and test method of a safety type relay. When synchronization testing is carried out, voltage provided for the coil of the relay is changed, so that the relay can pull in or release, whether the instantaneous synchronization of the turning on or turning off of corresponding light emitting diodes when four sets of normally-open contacts are switched on or switched off is consistent is observed, and whether the instantaneous synchronization of the turning off or turning on of corresponding light emitting diodes when two sets of normally-closed contacts are switched off or switched on is consistent is observed; contact resistance measurement is carried out, the switching of switches is selected through a knob, the connection points of corresponding light emitting diodes, which are connected with the contacts of the relay, are connected with resistance meters; and the values of the resistance of the connection points which are connected with the resistance meters are read through the resistance meters. With the test device and test method of the invention adopted, tests, such as coil resistance, maximum release voltage and minimum working voltage tests can be carried out, safety type relays such as Hoz-462 safety type relays can be detected reliably, a testing means can be provided for line personnel on duty to find out the cause of a fault, and the maintenance of the safety relays can be possible.
Description
Technical field
The present invention relates to a kind of test device of safety type relay and method of testing are it is adaptable to hoz-462 safety
The test of relay.
Background technology
Safety type relay (relay) is a kind of electric control device, is when the change of input quantity (energizing quantity) reaches regulation
During requirement, make controlled volume that a kind of electrical equipment of predetermined Spline smoothing occurs in electric output circuit, it have control system and
By the interactive relationship between control system.At present, the hoz-462 safety type relay that German Heng Shile produces is mainly used in city
The operation of city's rail line uses upper, by this safety type relay decision track circuit sender being arranged on machine cage rear
To, and undertake external equipment and the function of sending receipt signal in junction chamber.
Due to lacking suitable test device, current circuit operator on duty lacks reliable test to this safety type relay
Means, failure cause fails to understand, scrappage is higher.For such situation, it is badly in need of making corresponding relay test-device, to beat
Open this technical barrier, on the basis of ensureing detection meanss, attempt maintenance and extend its service life.
Content of the invention
For solving the problems, such as currently the safety type relays such as hoz-462 to be lacked reliable means of testing, the present invention provides one
Plant test device and the method for testing of safety type relay.
One technical scheme of the present invention is to provide a kind of method of testing of safety type relay:
Current supply circuit is made to obtain by the first switch of closure state electric, for being linked into the coil power supply of the relay of current supply circuit；
The first via Switching Power Supply that described current supply circuit provides, opens for the second of closure state through a neat degree display gear
Close, power for neat degree measure loop；
It is provided with two groups of light emitting diodes, wherein first group of multiple light emitting diodes and relay in described neat degree measure loop
One group of normally-closed contact corresponds to and connects；Second group of multiple light emitting diodes are corresponding with one group of normally opened contact of relay to be connected；
By changing the voltage that current supply circuit provides to relay coil, make relay energized or release, normally opened contact is closed
When disconnecting second group of light emitting diode light or the instantaneously neat degree that extinguishes whether consistent observation situation is recorded, Yi Jitong
When first group of light emitting diode extinguishes or whether the instantaneously neat degree lighted consistent when normally-closed contact is opened or closed observation feelings
Condition is recorded.
Preferably, after the pressure regulator zero of current supply circuit setting, current supply circuit is gradually increased to relay by pressure regulator
The voltage that coil provides, makes relay energized, second group of light emitting diode is lighted；
Again by being gradually reduced the voltage that current supply circuit provides to relay coil, relay is made to discharge, second group of light-emitting diodes
Pipe extinguishes, and when first group of light emitting diode is lighted, detects the numerical value of relay coil both end voltage by voltmeter, is recorded as
The maximum release voltage of relay；
After the pressure regulator zero of current supply circuit setting, the electricity that current supply circuit provides to relay coil is gradually reduced by pressure regulator
Pressure, until first group of light emitting diode extinguishes, and when second group of light emitting diode is lighted, detects relay coil by voltmeter
The numerical value of both end voltage, the minimum being recorded as relay picks up voltage；Described current supply circuit provides the second way switch power supply, for electricity
Pressure table is powered.
Preferably, in ohmmeter measure loop, ohmmeter is the second switch of closure state through resistance measurement gear, with
The input of one the 3rd switch connects；Described 3rd switch switches in multiple contact resistances detection gear, makes the 3rd to open
Close outfan with described neat spend measure loop multiple contacts one of contact be connected；Multiple contacts comprise first group and send out
The contact of optical diode connection corresponding with normally-closed contact, and second group of light emitting diode corresponding with normally opened contact connect connect
Point；
Described current supply circuit provides three-way switch power supply, is that described ohmmeter is powered；Resistance measurement in described second switch
Gear is closure state, and when neat degree display gear is off-state, described ohmmeter is connected with the 3rd output switching terminal
Contact is mutually connected and is detected, reads the resistance of connected contact resistance by ohmmeter.
Preferably, current supply circuit dead electricity is made by the first switch of off-state, using being adjusted to the ten thousand of resistance measurement gear
With table, are sampled in the coil two ends of relay, from the resistance of circuit tester read coil resistance.
Preferably, described relay is hoz-462 safety type relay.
Another technical scheme of the present invention is to provide a kind of test device of safety type relay, comprises:
Current supply circuit, it is connected with neat degree measure loop, and access has the coil of relay in this current supply circuit；
First switch；The closure state of first switch or off-state, each correspond to and make described current supply circuit with power supply even
Logical or disconnected state；The current supply circuit connecting with power supply, is that coil, the neat degree measure loop of relay supplies respectively
Electricity；
The neat degree of second switch setting shows the closure state of gear, obtains neat degree with described neat degree measure loop from current supply circuit
The state of test job power supply is corresponding；
Described neat degree measure loop is provided with two groups of light emitting diodes, wherein first group of multiple light emitting diodes and relay
One group of normally-closed contact corresponds to and connects；Second group of multiple light emitting diodes are corresponding with one group of normally opened contact of relay to be connected；
Described current supply circuit is provided with pressure regulator, to change the voltage that current supply circuit provides to relay coil so that relay
In the case of picking up or discharging, close by normally opened contact or disconnect to control second group of light emitting diode to light or extinguish,
And be opened or closed to control first group of light emitting diode to extinguish or light by normally-closed contact.
Preferably, described current supply circuit is also connected with ohmmeter measure loop, and the current supply circuit connecting with power supply
Power for the ohmmeter in ohmmeter measure loop further；
Described second switch also has resistance measurement gear；The neat degree display gear of second switch is closure and resistance measurement gear
For the state disconnecting, corresponding with the state that described neat degree measure loop obtains neat degree test job power supply from current supply circuit；The
The neat degree of two switches shows the state that gear is disconnection and resistance measurement gear is closure, with described ohmmeter measure loop from confession
The state that The electric loop obtains resistance measurement working power is corresponding；
Described ohmmeter is the second switch of closure state through resistance measurement gear, is connected with the input of one the 3rd switch；
Described 3rd switch switches in multiple contact resistances detection gear, so that the outfan of the 3rd switch and described neat degree is detected back
Multiple contacts on road one of contact connect, to read the resistance of connected contact resistance by ohmmeter；Multiple connect
Point comprises the contact of first group of light emitting diode connection corresponding with normally-closed contact, and second group of light emitting diode and normally opened contact
The corresponding contact connecting.
Preferably, the coil of described relay be connected to voltmeter；The current supply circuit connecting with power supply, also for this electricity
Pressure table is powered；
The voltage of described pressure regulator output from being zero to the state being gradually increased, with relay energized, second group of light emitting diode
The state lighted is corresponding；
In the case of relay energized, the state that the voltage of described pressure regulator output is gradually reduced, and relay release, second
The state that group light emitting diode extinguishes and first group of light emitting diode is lighted is corresponding, and with described voltmeter display relay
The state of big release voltage is corresponding；
The voltage of described pressure regulator output, from being zero to the state being gradually reduced, is extinguished and second group with first group of light emitting diode
The state that light emitting diode is lighted is corresponding, and corresponding with the state that voltmeter display relay minimum picks up voltage.
Preferably, in the case of so that current supply circuit is not connected with power supply by the first switch of off-state, will adjust
Circuit tester to resistance measurement gear is attempted by the coil two ends of relay, shows the resistance of coil resistance by circuit tester.
Preferably, described relay is hoz-462 safety type relay；
Described relay passes through to insert testing base, makes the coil of relay access current supply circuit；Described current supply circuit is provided with electricity
Supply socket is connected with power supply, to connect with the coil of relay also by the pressure regulator of setting, transformator, bridge rectifier
Connect；
Described voltmeter is hf5135a-220v type；Described ohmmeter is mypin-0 ~ 9.99 type；
Described neat degree test job power supply is 12v；Described resistance measurement working power is 5v.
Compared with prior art, the invention has the beneficial effects as follows: the present invention can achieve to safety relays such as hoz-462
The reliable means of testing detecting, finding out failure cause for circuit operator on duty offer, and the maintenance to such relay for future
There is provided may.Whereby it can be found that the common failure problems of safety type relay, overhaul targeted specifically to extend this kind of relay
Service life, improve subway line operation security, there is good Social and economic benef@.
Brief description
Fig. 1 is the module frame chart of test device of the present invention；
Fig. 2 is the schematic diagram of method of testing of the present invention；
Fig. 3 is the principle schematic diagram. of test device of the present invention.
Specific embodiment
With specific implementation method, the present invention is described in further detail below in conjunction with the accompanying drawings:
As shown in figure 1, test device of the present invention, comprising: control with test module, power module, DC test module,
Data display unit；Wherein, described DC test module is connected with test module, data display unit with described control respectively
Connect；Described power module is respectively DC test module, data display unit is powered.Described control and test module, in order to root
According to corresponding test event, control the corresponding operation of other modules in test process.
Cooperation, referring to shown in Fig. 2, Fig. 3, by the test device of the present invention, can carry out electrical characteristics test, contact electricity
Resistance test and neat degree test, the coil resistance of measurement hoz-462 safety type relay, contact resistance, maximum release voltage, minimum
Running voltage and neat degree, are shown to test data by data display unit, carry out reference record according to video data.
Described DC test module comprises the testing base of relay, DC test connecting line, pressure regulator, 220v/12v change
Depressor, bridge rectifier.
Described data display unit comprises voltmeter, ohmmeter, 12v display lamp, six LED lamps.Preferably, described voltage
Table is hf5135a-220v；Described ohmmeter is mypin-0 ~ 9.99, and its accuracy is better than 0.1%.
Described power module comprises supply socket, 5v Switching Power Supply, 12v Switching Power Supply.
Wherein, the ac220v power supply of supply socket input, controls through electric fuse protection, power control switch k1, is connected to tune
The input of depressor, by isolating transformer secondary output AC 0 ~ 12v after pressure regulation 0 ~ 220v, rectified after output direct current 0 ~
12v is it is ensured that the stablizing of each test cell power supply supply.
Power supply indicator, 5v Switching Power Supply, 12v Switching Power Supply, are controlled by switch k1, a/ that is respective and being connected to supply socket
N1 two ends.Wherein, power supply indicator, whether the power supply for embodying described test device connects, and lights, break during switch k1 closure
Extinguish when opening.
After relay to be measured is inserted into testing base, the two ends of the coil j of relay are directly connected to bridge by electric wire
Formula commutator, is controlled by k1 and is powered for this relay coil j with the a/n1 two ends of the socket that switches on power.
Setting one switch k2, for controlling the neat working power break-make spending measure loop, and controls ohmmeter measure loop
Working power open close, through k2 switching make this two measure loop select a connection.12v Switching Power Supply is controlled, with 12v by switch k2
Display lamp and six LED lamps connect.The working power that the output of 12v Switching Power Supply is lighted as supply six lamps of led；Using
12v display lamp, to embody this working power connection situation.
Wherein, two LED lamps are corresponding with two groups of normally-closed contacts of relay connects；Four additional LED lamp and relay
Four groups of normally opened contacts correspond to and connect, and this four LED lamps can be made to show difference different from the color of the first two LED lamp.Carry out neat
During degree test, during relay energized and release, four red lights of the led3 ~ led6 on counter plate are instantaneously lighted and are extinguished
Whether consistent, and whether two green lights of led1 with led2 instantaneously light and extinguish consistent, is observed.
5v Switching Power Supply is connected with ohmmeter, is controlled by switch k2 and is connected with selecting switch k3 of a knob, by switching
K3 switches in six gears, with select connect to need to carry out contact resistance test six contacts one of.Switch k3
Six gears, circuit is connected to the above-mentioned two groups of normally-closed contact a b of relay and four groups of normally opened contact c d e f and respective led
The corresponding position connecting of lamp.In addition 5v Switching Power Supply is also connected with voltmeter, can be used to power for voltmeter.The present invention does not limit
Divide in the circuit connecting section of Fig. 3, other electronic circuits being had been widely used using prior art, this is no longer given and retouches in detail
State.
Test device of the present invention, when carrying out coil resistance measurement, is detected by high-precision circuit tester, surveys determining
In the case of the power-off (k1 disconnection) that trial assembly is put, circuit tester is adjusted to resistance measurement gear, by table rod insertion relay line
Circle j two ends sampled, directly from table sense coil resistance size (i.e. resistance target resistance), be accurate to 0.1 ω.
Test device of the present invention carry out contact resistance measurement when, using high-precision ohmmeter (digital resistance
Table mypin-0 ~ 9.99) detection, 0. 01 ω can be accurate to.Determine switch k1 closure, energising, power supply indicator are lighted, and will switch
K2 pulls out " resistance measurement " position and (that is, makes the switch k2 resistance measurement gear of lower left in Fig. 3 close, simultaneously top-right open
Close k2 and spend display gear linkage disconnection together), chosen switch k3 rotation is connected any one contact resistance that currently need to test and is entered
Row sampling, sampled result is sent to the input of ohmmeter, directly can be read the resistance size of this contact resistance by ohmmeter.
Similarly, other contact resistances are tested.
Wherein, when selecting switch k3 being adjusted respectively to a b contact, the contact resistance resistance of two groups of contacts of record；Slowly
Ground adjusts pressure regulator knob clockwise, and (knob is adjusted clockwise makes pressure regulator output voltage increase, and adjusting counterclockwise makes voltage subtract
Little), after relay picks up completely, then selecting switch k3 is adjusted respectively the contact recording four groups of contacts to c d e f contact
Resistance.
Test device of the present invention, when being spent test together, determines that pressure regulator makes switch k1 in the case of zero-bit
Closure is energized, and Switching Power Supply output 5v delivers to voltmeter, ohmmeter as its working power.Switch k2 is by " resistance measurement "
It is switched to " neat degree display " gear (k2 state as shown in Figure 3), adjust pressure regulator knob and (increase clockwise, subtract counterclockwise
Little) voltage should change between dc 0～12v, illustrate that instrument normally can work.
When pressure regulator knob is slowly adjusted clockwise, digital voltmeter numerical value is made slowly to increase therewith.Work as digital voltmeter
When being about shown in 5.4v, measured relay coil j obtain electric pick up the closing of contact, four groups of corresponding c d e f contact normally opened to touch
Point is connected, and so that corresponding four light emitting diode led3 ~ led6 is lighted, now observes when these diodes are instantaneously lighted
Qi Du whether consistent (if consistent is to meet the requirements).
Make timing under voltage when pressure regulator knob is adjusted counterclockwise, about in 2v, relay coil j releases digital voltmeter
Put, four groups of contacts of corresponding c d e f contact disconnect, whether consistent observe corresponding four led3 ~ led6 neat degree when extinguishing
If (consistent is to meet the requirements).Meanwhile, two groups of normally-closed contacts of corresponding a b contact reset and connect, and observe corresponding led1 ~ led2
Whether the instantaneously neat degree when lighting or extinguish is consistent (if consistent is to meet the requirements).
Test device of the present invention, when carrying out voltage measurement, is mainly completed using pressure regulator, after switch k1 closure, right
Pressure regulator knob adjusts clockwise until voltage reaches maximum and magnetized, now correspond to four led3 of c d e f contact ~
Led6 red light is lighted；Slowly adjust pressure regulator knob counterclockwise, treat that four red lights go out entirely, two led1 of corresponding a b contact,
Led2 green light light after it was observed that voltmeter numerical value be relay release voltage (maximum release voltage).Pressure regulator is zeroed
Afterwards, slowly clockwise adjust pressure regulator knob to reduce voltage, treat that this two green lights of led1, led2 go out entirely, led3 ~ led6 this four
Small cup red light light after it was observed that voltmeter numerical value, the as running voltage (minimum picks up voltage) picking up of relay.
The test device of the present invention and method of testing, solve the technological gap of safety type relay detection, have stronger
Practicality and reliability, be easy to analysis and the data sampling of power transfer relay, be that provide can for the maintenance of safety type relay
Energy.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
Multiple modifications and substitutions all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of method of testing of safety type relay it is characterised in that
Current supply circuit is made to obtain by the first switch of closure state electric, for being linked into the coil power supply of the relay of current supply circuit；
The first via Switching Power Supply that described current supply circuit provides, opens for the second of closure state through a neat degree display gear
Close, power for neat degree measure loop；
It is provided with two groups of light emitting diodes, wherein first group of multiple light emitting diodes and relay in described neat degree measure loop
One group of normally-closed contact corresponds to and connects；Second group of multiple light emitting diodes are corresponding with one group of normally opened contact of relay to be connected；
By changing the voltage that current supply circuit provides to relay coil, make relay energized or release, normally opened contact is closed
When disconnecting second group of light emitting diode light or the instantaneously neat degree that extinguishes whether consistent observation situation is recorded, Yi Jitong
When first group of light emitting diode extinguishes or whether the instantaneously neat degree lighted consistent when normally-closed contact is opened or closed observation feelings
Condition is recorded.
2. method of testing as claimed in claim 1 it is characterised in that
After the pressure regulator zero of current supply circuit setting, the electricity that current supply circuit provides to relay coil is gradually increased by pressure regulator
Pressure, makes relay energized, second group of light emitting diode is lighted；
Again by being gradually reduced the voltage that current supply circuit provides to relay coil, relay is made to discharge, second group of light-emitting diodes
Pipe extinguishes, and when first group of light emitting diode is lighted, detects the numerical value of relay coil both end voltage by voltmeter, is recorded as
The maximum release voltage of relay；
After the pressure regulator zero of current supply circuit setting, the electricity that current supply circuit provides to relay coil is gradually reduced by pressure regulator
Pressure, until first group of light emitting diode extinguishes, and when second group of light emitting diode is lighted, detects relay coil by voltmeter
The numerical value of both end voltage, the minimum being recorded as relay picks up voltage；
Described current supply circuit provides the second way switch power supply, is that voltmeter is powered.
3. method of testing as claimed in claim 1 or 2 it is characterised in that
In ohmmeter measure loop, ohmmeter is the second switch of closure state through resistance measurement gear, opens with one the 3rd
The input closing connects；Described 3rd switch switches in multiple contact resistances detection gear, makes the outfan of the 3rd switch
With described neat degree measure loop multiple contacts one of contact be connected；Multiple contacts comprise first group of light emitting diode with
The corresponding contact connecting of normally-closed contact, and the contact of second group of light emitting diode connection corresponding with normally opened contact；
Described current supply circuit provides three-way switch power supply, is that described ohmmeter is powered；Resistance measurement in described second switch
Gear is closure state, and when neat degree display gear is off-state, described ohmmeter is connected with the 3rd output switching terminal
Contact is mutually connected and is detected, reads the resistance of connected contact resistance by ohmmeter.
4. method of testing as claimed in claim 3 it is characterised in that
Current supply circuit dead electricity is made by the first switch of off-state, using being adjusted to the circuit tester of resistance measurement gear to relay
Coil two ends sampled, from the resistance of circuit tester read coil resistance.
5. method of testing as claimed in claim 4 it is characterised in that
Described relay is hoz-462 safety type relay.
6. a kind of test device of safety type relay is it is characterised in that comprise:
Current supply circuit, it is connected with neat degree measure loop, and access has the coil of relay in this current supply circuit；
First switch；The closure state of first switch or off-state, each correspond to and make described current supply circuit with power supply even
Logical or disconnected state；The current supply circuit connecting with power supply, is that coil, the neat degree measure loop of relay supplies respectively
Electricity；
The neat degree of second switch setting shows the closure state of gear, obtains neat degree with described neat degree measure loop from current supply circuit
The state of test job power supply is corresponding；
Described neat degree measure loop is provided with two groups of light emitting diodes, wherein first group of multiple light emitting diodes and relay
One group of normally-closed contact corresponds to and connects；Second group of multiple light emitting diodes are corresponding with one group of normally opened contact of relay to be connected；
Described current supply circuit is provided with pressure regulator, to change the voltage that current supply circuit provides to relay coil so that relay
In the case of picking up or discharging, close by normally opened contact or disconnect to control second group of light emitting diode to light or extinguish,
And be opened or closed to control first group of light emitting diode to extinguish or light by normally-closed contact.
7. test device as claimed in claim 6 it is characterised in that
Described current supply circuit is also connected with ohmmeter measure loop, and the current supply circuit connecting with power supply is resistance further
Ohmmeter in table measure loop is powered；
Described second switch also has resistance measurement gear；The neat degree display gear of second switch is closure and resistance measurement gear
For the state disconnecting, corresponding with the state that described neat degree measure loop obtains neat degree test job power supply from current supply circuit；The
The neat degree of two switches shows the state that gear is disconnection and resistance measurement gear is closure, with described ohmmeter measure loop from confession
The state that The electric loop obtains resistance measurement working power is corresponding；
Described ohmmeter is the second switch of closure state through resistance measurement gear, is connected with the input of one the 3rd switch；
Described 3rd switch switches in multiple contact resistances detection gear, so that the outfan of the 3rd switch and described neat degree is detected back
Multiple contacts on road one of contact connect, to read the resistance of connected contact resistance by ohmmeter；Multiple connect
Point comprises the contact of first group of light emitting diode connection corresponding with normally-closed contact, and second group of light emitting diode and normally opened contact
The corresponding contact connecting.
8. test device as claimed in claims 6 or 7 it is characterised in that
The coil of described relay is simultaneously connected to voltmeter；The current supply circuit being connected with power supply, is also powered for this voltmeter；
The voltage of described pressure regulator output from being zero to the state being gradually increased, with relay energized, second group of light emitting diode
The state lighted is corresponding；
In the case of relay energized, the state that the voltage of described pressure regulator output is gradually reduced, and relay release, second
The state that group light emitting diode extinguishes and first group of light emitting diode is lighted is corresponding, and with described voltmeter display relay
The state of big release voltage is corresponding；
The voltage of described pressure regulator output, from being zero to the state being gradually reduced, is extinguished and second group with first group of light emitting diode
The state that light emitting diode is lighted is corresponding, and corresponding with the state that voltmeter display relay minimum picks up voltage.
9. test device as claimed in claim 8 it is characterised in that
In the case of so that current supply circuit is not connected with power supply by the first switch of off-state, resistance measurement shelves will be adjusted to
The circuit tester of position is attempted by the coil two ends of relay, shows the resistance of coil resistance by circuit tester.
10. test device as claimed in claim 9 it is characterised in that
Described relay is hoz-462 safety type relay；
Described relay passes through to insert testing base, makes the coil of relay access current supply circuit；Described current supply circuit is provided with electricity
Supply socket is connected with power supply, to connect with the coil of relay also by the pressure regulator of setting, transformator, bridge rectifier
Connect；
Described voltmeter is hf5135a-220v type；Described ohmmeter is mypin-0 ~ 9.99 type；
Described neat degree test job power supply is 12v；Described resistance measurement working power is 5v.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847392.4A CN106371009A (en) | 2016-09-23 | 2016-09-23 | Test device and test method of safety type relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847392.4A CN106371009A (en) | 2016-09-23 | 2016-09-23 | Test device and test method of safety type relay |
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| CN106371009A true CN106371009A (en) | 2017-02-01 |
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| CN201610847392.4A Pending CN106371009A (en) | 2016-09-23 | 2016-09-23 | Test device and test method of safety type relay |
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