CN207882372U - Comprehensive protector of motor tester - Google Patents
Comprehensive protector of motor tester Download PDFInfo
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- CN207882372U CN207882372U CN201820349794.6U CN201820349794U CN207882372U CN 207882372 U CN207882372 U CN 207882372U CN 201820349794 U CN201820349794 U CN 201820349794U CN 207882372 U CN207882372 U CN 207882372U
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Abstract
The utility model is related to comprehensive protector of motor measuring technologies.The utility model solves current comprehensive protector of motor causes protector can not normal use due to sole mass is unqualified or long-distance transport is jolted, and cannot in time to protector whether can normal use detected in time, the problem of causing delay to produce, propose a kind of comprehensive protector of motor tester, its technical solution can be summarized as, it is integrated in the tester that corresponding leak(age) test circuit is set, overload test circuit and phase shortage hookup, electric leakage can be whether there is using it is preceding tested out in comprehensive protector of motor, the case where overload and phase shortage, greatly improve fault detection efficiency, it is avoided to there is electric leakage, overload and phase shortage etc. and be unable to normal use, so that delay production, suitable for comprehensive protector of motor.
Description
Technical field
The utility model is related to integrated protector for electric motor technologies, the more particularly to skill of comprehensive protector of motor tester
Art.
Background technology
Due to the particularity of underground coal mine environment, it is desirable that underground electrical equipment must use I class mine anti-explosion products.At present
The equipment such as drag conveyor, belt conveyor, winch, slusher machine, water pump used in coal mine are all made of the startup of QBZ series magnetic force
Device controls motor, and ZDB (JDB) comprehensive protector of motor used in the series startup device is vulnerable part, is often had
After ZDB (JDB) comprehensive protector of motor is replaced in unit reflection, protected due to being jolted product quality problem or long-distance transport
Device can not normal use, QBZ series magnetic starter can not normally start, and the case where influencing production occur.
Utility model content
The purpose of this utility model is to provide a kind of comprehensive protector of motor tester, solves current electromotor integrated protection
Device sole mass is unqualified or long-distance transport jolt due to cause protector can not normal use, and cannot in time it is right
Protector whether can normal use detected in time, cause delay produce the problem of.
The utility model solves its technical problem, the technical solution adopted is that：Comprehensive protector of motor tester, feature
It is, including strong current generator, transformer, ammeter, overload test switch, overload test contactor coil, multiple parallel connections
Overload test main noddle on contactor, phase shortage test switch, phase shortage experiment contactor coil, multiple parallel connection phase shortage experiment contact
Device main contact, leak(age) test resistance one, leak(age) test resistance two, leak(age) test switch one, leak(age) test switch two, indicator light,
The primary side of contact one, contact two, A column caps, B column caps, C column caps, D column caps, E column caps and F column caps, the transformer is used for and friendship
Galvanic electricity potential source connects, one end of secondary side be separately connected one end of leak(age) test switch one, leak(age) test switch two one end, tactile
One end of first, overload test switch one end and phase shortage test switch, the other end of overload test switch pass through overload test
Contactor coil connects the other end of Circuit Fault on Secondary Transformer, and the other end of phase shortage test switch tests contactor coil by phase shortage
The other end of Circuit Fault on Secondary Transformer is connected, contact two connects the other end of Circuit Fault on Secondary Transformer by indicator light, and leak(age) test is opened
The other end for closing one connects C column caps by leak(age) test resistance one, and the other end of leak(age) test switch two passes through leak(age) test electricity
Two connection C column caps of resistance, one end of ammeter with the Y output ends of strong current generator for connecting, and the other end is respectively by multiple
Overload test main noddle on contactor connection E column caps in parallel test main noddle on contactor with the phase shortage by multiple parallel connections and connect F
Column cap, for being connect with B column caps, contact one is used for and relay in comprehensive protector of motor the X output ends of strong current generator
One end connection, contact two with the other end of relay in comprehensive protector of motor for connect, and A column caps are used for and motor synthesis
A output ends connection in protector, for being connect with the B input terminals in comprehensive protector of motor, C column caps are used for and electricity B column caps
C output ends connection in machine comprehensive protection device, D column caps for being connect with the D input terminals in comprehensive protector of motor, use by E column caps
It is connect in the E output ends in comprehensive protector of motor, F column caps with the F input terminals in comprehensive protector of motor for connecting.
Specifically, further include power switch and fuse, one end of the fuse is for one end with alternating-current voltage source
Connection, the other end connect one end of transformer primary side by power switch, and the other end of transformer primary side is used for and exchanges
The other end of voltage source connects.
Further, further include voltmeter, one end of one end connection transformer primary side of the voltmeter, the other end connects
Connect the other end of transformer primary side.
Specifically, the range of the voltmeter is 0-250V.
Still further, the input voltage of the transformer primary side is the voltage that voltage value is 220V, transformer secondary
The output voltage of side is the voltage that voltage value is 36V.
Specifically, the range of the ammeter is 0-300A.
Still further, the leak(age) test switch that it is 660V that the leak(age) test switch, which is voltage class, leak(age) test are opened
It is the leak(age) test switch that voltage class is 1140V to close two.
Specifically, the resistance value of the leak(age) test resistance one is 20K Ω, rated power 10W, the leak(age) test electricity
The resistance value of resistance two is 40K Ω, rated power 10W.
The utility model has the beneficial effects that by above-mentioned comprehensive protector of motor tester, the one in the tester
Change integrally disposed corresponding leak(age) test circuit, overload test circuit and phase shortage hookup, it can be in electromotor integrated protection
Device greatly improves fault detection efficiency, it is avoided to deposit using the case where it is with the presence or absence of electric leakage, overload and phase shortage is preceding tested out
It is unable to normal use in electric leakage, overload and phase shortage etc., so that delay production.
Description of the drawings
Fig. 1 is the electrical block diagram of the utility model embodiment.
Wherein, FU indicates that fuse, TC indication transformers, U indicate that voltmeter, I indicate that ammeter, L indicate indicator light, K
Indicate that power switch, K0 indicate that relay in comprehensive protector of motor, K1 indicate that overload test switch, K2 indicate phase shortage experiment opening
It closes, K3 expression leak(age) tests switch one, K4 expression leak(age) tests switch two, KM1 expression overload test contactor coils, KM11,
KM12, KM13 and KM14 indicate that four overload test main noddle on contactor in parallel, KM2 indicate that phase shortage tests contactor line respectively
Circle, KM21, KM22, KM23 and KM24 indicate four phase shortages experiment main noddle on contactor in parallel respectively, and 1 indicates contact one, 2
Indicate that contact two, X indicate that the X output ends of strong current generator, Y indicate that the Y output ends of strong current generator, 220V indicate transformation
The voltage value of the input voltage of device primary side, the voltage value of the output voltage of 36V indication transformer secondary sides, B indicate B column caps, D
Indicate that D column caps, F indicate that F column caps, A indicate that A column caps, C indicate that C column caps, E indicate E column caps.
Specific implementation mode
With reference to embodiment and attached drawing, the technical solution of the utility model is described in detail.
Comprehensive protector of motor tester described in the utility model, by strong current generator, transformer, ammeter, overload
Test switch, overload test contactor coil, the overload test main noddle on contactor of multiple parallel connections, phase shortage test switch, phase shortage
Test contactor coil, multiple parallel connection phase shortage test main noddle on contactor, leak(age) test resistance one, leak(age) test resistance two,
Leak(age) test switch one, leak(age) test switch two, indicator light, contact one, contact two, A column caps, B column caps, C column caps, D column caps, E
Column cap and F column caps composition, wherein for being connect with alternating-current voltage source, one end of secondary side is separately connected the primary side of transformer
One end of leak(age) test switch one, one end of leak(age) test switch two, contact one, one end of overload test switch and phase shortage experiment
The other end of one end of switch, overload test switch connects the another of Circuit Fault on Secondary Transformer by overload test contactor coil
The other end at end, phase shortage test switch tests the other end that contactor coil connects Circuit Fault on Secondary Transformer, contact two by phase shortage
The other end of Circuit Fault on Secondary Transformer is connected by indicator light, the other end of leak(age) test switch one is connected by leak(age) test resistance one
Connect C column caps, the other end of leak(age) test switch two connects C column caps by leak(age) test resistance two, one end of ammeter be used for
The Y output ends of strong current generator connect, and the other end connects E columns by the overload test main noddle on contactor of multiple parallel connections respectively
Head tests main noddle on contactor with the phase shortage by multiple parallel connections and connects F column caps, and the X output ends of strong current generator are used for and B
Column cap connects, and for being connect with one end of relay in comprehensive protector of motor, contact two is used to integrate with motor and protect contact one
Protect the other end connection of relay in device, A column caps for connect with the A output ends in comprehensive protector of motor, B column caps for
B input terminals connection in comprehensive protector of motor, C column caps with the C output ends in comprehensive protector of motor for connecting, D column caps
For being connect with the D input terminals in comprehensive protector of motor, E column caps are used to connect with the E output ends in comprehensive protector of motor,
F column caps with the F input terminals in comprehensive protector of motor for connecting.
Here, integrated in the comprehensive protector of motor tester that the application proposes that corresponding leak(age) test is set
Circuit, overload test circuit and phase shortage hookup can be whether there is in comprehensive protector of motor using preceding testing out it
The case where electric leakage, overload and phase shortage.
Embodiment
The utility model embodiment comprehensive protector of motor tester, including strong current generator, transformer TC, ammeter
I, overload test switch K1, overload test contactor coil KM1, the overload test main noddle on contactor of multiple parallel connections, phase shortage examination
Test switch K2, phase shortage tests contactor coil KM2, phase shortage experiment main noddle on contactor, the leak(age) test resistance one of multiple parallel connections
R1, two R2 of leak(age) test resistance, one K3 of leak(age) test switch, two K4 of leak(age) test switch, indicator light L, contact 1, contact two
2, A column caps A, B column caps B, C column caps C, D column caps D, E column cap E and F column cap F, electrical block diagram is referring to Fig. 1, wherein becomes
For the primary side of depressor TC for being connect with alternating-current voltage source, one end of secondary side is separately connected the one of one K3 of leak(age) test switch
End, one end of two K4 of leak(age) test switch, contact 1, one end of overload test switch K1 and phase shortage test switch K2 one end,
The other end of overload test switch K1 is lacked by the other end of overload test contactor coil KM1 connection transformer TC secondary sides
The other end of phase study switch K2 tests the other end of contactor coil KM2 connection transformer TC secondary sides, contact by phase shortage
22 pass through leak(age) test by the other ends of indicator light L connection transformer TC secondary sides, the other end of one K3 of leak(age) test switch
The other end of resistance one R1 connections C column cap C, two K4 of leak(age) test switch pass through two R2 connection C column cap C of leak(age) test resistance, electricity
For being connect with the Y output ends Y of strong current generator, the other end passes through the overload test of multiple parallel connections respectively for one end of flow table I
Main noddle on contactor connects E column caps E and connects F column cap F, high current hair with the phase shortage experiment main noddle on contactor by multiple parallel connections
For being connect with B column caps B, contact 1 is used to connect with one end of relay K0 in comprehensive protector of motor the X output ends of raw device
It connects, for being connect with the other end of relay K0 in comprehensive protector of motor, A column caps A is used to integrate with motor and protect contact 22
The A output ends connection in device is protected, for being connect with the B input terminals in comprehensive protector of motor, C column caps C is used for and electricity B column caps B
C output ends connection in machine comprehensive protection device, D column caps D with the D input terminals in comprehensive protector of motor for connecting, E column caps E
For being connect with the E output ends in comprehensive protector of motor, F column caps F is used to connect with the F input terminals in comprehensive protector of motor
It connects, in this example, the number of the overload test main noddle on contactor of multiple parallel connections is preferably four, respectively KM11, KM12, KM13
And KM14, it is in parallel by four overload test main noddle on contactor, can when it is closed at increasing circuit current-carrying capacity, it is more
The number of the phase shortage experiment main noddle on contactor of a parallel connection is preferably four, respectively KM21, KM22, KM23 and KM24, is passed through
Four phase shortages experiment main noddle on contactor are in parallel, can when it is closed at increasing circuit current-carrying capacity, this example is with model
It is described in detail for the comprehensive protector of motor of JDB-120.
It in foregoing circuit, preferably may also include power switch K and fuse FU, transformer TC primary sides can be realized
Overvoltage and overcurrent protection, wherein for being connect with one end of alternating-current voltage source, the other end is opened by power supply for one end of fuse FU
One end of K connection transformer TC primary sides is closed, the other end of transformer TC primary sides is used to connect with the other end of alternating-current voltage source
It connects；It is further preferred that this tester may also include voltmeter U, voltmeter U can monitor transformer TC primary sides in real time
Input voltage, one end of one end connection transformer TC primary sides of voltmeter U, the other end connect the another of transformer TC primary sides
End, here, the range of voltmeter U is preferably 0-250V, and the range of voltmeter U can be adjusted accordingly according to actual needs
It is whole；Here, the input voltage of transformer TC primary sides is preferably the voltage that voltage value is 220V, the output of transformer TC secondary sides
Voltage is preferably the voltage that voltage value is 36V, can ensure the normal work of corresponding assembly in comprehensive protector of motor, ammeter
The range of I is preferably 0-300A, can carry out the corresponding adjustment of the range according to actual needs；It is medium-sized in order to meet this example
Number for JDB-120 comprehensive protector of motor practical measurement need, in this example leakage tests part electric elements and lack
Phase study part electric elements are set as follows：One K3 of leak(age) test switch is the electric leakage examination that preferably voltage class is 660V
Switch is tested, two K4 of leak(age) test switch is preferably that the leak(age) test that voltage class is 1140V switchs, one R1's of leak(age) test resistance
Resistance value is preferably 20K Ω, and rated power is preferably 10W, and the resistance value of two R2 of leak(age) test resistance is preferably 40K Ω, specified
Power is preferably 10W.
During actual test, the overload test that is carried out to the comprehensive protector of motor of the model JDB-120 of this example lacks
Phase study and leak(age) test difference are as follows：
First, by Fig. 1 wiring, transformer primary side incoming transport power supply, by the A in A column caps A and comprehensive protector of motor
Output end connects, and B column caps B is connect with the B input terminals in comprehensive protector of motor, the C column caps C and C in comprehensive protector of motor
Output end connects, and D column caps D is connect with the D input terminals in comprehensive protector of motor, the E column caps E and E in comprehensive protector of motor
Output end connects, and F column caps F is connect with the F input terminals in comprehensive protector of motor, the X output ends X connections of strong current generator
In B column caps, the Y output ends Y of strong current generator is connected to one end of ammeter I, power turn-on switch K, 220V alternating current
After transformer TC decompressions, secondary side exports 36V alternating currents and powers to the comprehensive protector of motor of model JDB-120, and
Working power is provided to overload test contactor coil KM1, phase shortage experiment contactor coil KM2.When model JDB-120's
When comprehensive protector of motor works normally, relay K0 is closed in the protector, and indicator light L is lighted, and is phase shortage, overload and electric leakage
Experiment is got ready.
Overload test is specific as follows：
B input terminal B and A output terminals As in the comprehensive protector of motor of model JDB-120, D input terminal D and C output ends
C, F input terminal F and E output end E, this three groups of binding posts install corresponding installation in the protector, and there are three current transformers, do
When overload test, for power turn-on switch K, 220V alternating current after transformer TC decompressions, secondary side exports 36V alternating currents to model
It powers for the comprehensive protector of motor of JDB-120, if protector is intact, indicator light L is lighted.It is closed overload test switch K1,
Overload test contactor coil KM1 is attracted, four overload test main noddle on contactor KM11, KM12, KM13 and KM14 in parallel
It is closed, starts strong current generator at this time, keep adjustable high current comprehensive through its motors of X output ends X through model JDB-120
The B input terminals B in protector is closed to A output terminals As, then through D input terminals D to C output end C, then through F input terminals F to E output end E,
Again high current is returned to ammeter I through four overload test main noddle on contactor KM11, KM12, KM13 and KM14 in parallel
The Y output ends Y shape of generator is at circuit, and ammeter I has electric current to show, when the electromotor integrated protection model JDB-120
The setting valve of device is set in a certain gear, and when such as 40A, the output current for adjusting strong current generator reaches certain times of setting valve
Rate protector action, which uses inverse time lag operation principle, i.e., shorter more than the multiple more big-movement time of setting valve, should
Indicator light extinguishing illustrates protector action on tester, overload protection pass the test, is turned up when test electric current to adjusting electricity
Certain multiplying power of stream, reaches the actuation time of protector and protector is failure to actuate, and indicator light is always on the tester, illustrates to protect
Protect device damage.
Test electric current and the multiplying power of setting current and the actuation time of protector see the table below：
It, should by upper table it is found that when 1.05 times of the setting current that the actual current in the circuit of test is setting
Protector is failure to actuate, i.e., relay K0 is constantly in closed state in protector, and relay K0 is not required to reset；When this time of test
When actual circuit in road is 1.2 times of the setting current of setting, ranging from -20 minutes 5 minutes actuation time of the protector,
I.e. relay K0 just will disconnect in the protector within this time range, and relay K0 can automatically reset, resetting time model
Enclose is -3 minutes 1 minute；When 1.5 times of the setting current that the actual circuit in the circuit of test is setting, the protector
Ranging from -3 minutes 1 minute actuation time, i.e., relay K0 just will disconnect in the protector within this time range, and after
Electric appliance K0 can automatically reset, ranging from -3 minutes 1 minute resetting time；When the actual circuit in the circuit of test is setting
At 6 times of setting current, ranging from -16 seconds 8 seconds actuation time of the protector, i.e., within this time range in the protector after
Electric appliance K0 just will disconnect, and relay K0 can automatically reset, ranging from -3 minutes 1 minute resetting time.
Phase shortage experiment is specific as follows：
For power turn-on switch K, 220V alternating current after transformer TC decompressions, secondary side exports 36V alternating currents to model
The comprehensive protector of motor of JDB-120 is powered, and if the protector is intact, indicator light L is lighted.Close phase shortage test switch K2, phase
Experiment contactor coil KM2 obtains electric actuation, four phase shortage experiment main noddle on contactor KM21, KM22, KM23 and KM24 in parallel
It is closed, indicator light L is bright, starts strong current generator, makes adjustable high current through its X output ends X through model JDB-120
Comprehensive protector of motor in B input terminals B to A output terminals As, then through D input terminals D to C output end C, then extremely through F input terminals F
Four phase shortage experiment main noddle on contactor KM21, KM22, KM23 and KM24 in parallel return high current hair again to ammeter I
For the Y output ends Y shape of raw device at circuit, ammeter I has electric current to show, electric current is only by changing the B input terminals B-A of protector at this time
Output terminals A, D input terminal D-C output end C two-phase current mutual inductors, cause F input terminal F-E output end E phase shortages, in the protector
Relay K0 disconnect, indicator light L extinguishes, and illustrates that protector open-phase protection performance is qualified, otherwise illustrates that protector is abnormal or damage
It is bad.
Leak(age) test is specific as follows：
Leak(age) test does not use strong current generator, only need to select voltage class, and here, one K3 of leak(age) test switch is electricity
The leak(age) test that grade is 660V is pressed to switch, two K4 of leak(age) test switch is the leak(age) test switch that voltage class is 1140V.It will
One K3 of leak(age) test switch or two K4 of leak(age) test switch are respectively closed, if indicator light L extinguishes, illustrate the leakage of the protector
Electric protection function is qualified；Otherwise illustrate the leakage of the protector as long as one leak(age) test switch of closure and indicator light L do not extinguish
Electric protection disabler or protector damage.
Earth leakage search/lockout working value is 22K Ω, error+20%, so leak(age) test resistance one R1 selection electricity when due to 660V
Resistance value is the resistance of 20K Ω as test resistance；When due to 1140V earth leakage search/lockout working value be 40K Ω, error+20%, so
It is the resistance of 40K Ω as test resistance that two R2 of leak(age) test resistance, which selects resistance value, here the specified work(of two test resistances
Rate is 10W, its corresponding leak(age) test switch need to only be disconnected by releasing earth leakage search/lockout.
According to this example description as it can be seen that the utility model proposes comprehensive protector of motor tester could be applicable to other
The comprehensive protector of motor of model is not limited to the comprehensive protector of motor model that this example is pointed out, when the motor for testing other models
When comprehensive protection device, the resistance value of corresponding leak(age) test resistance only need to be adjusted, while using of being mentioned in this example is multiple
The phase shortage of overload test main noddle on contactor and multiple parallel connection in parallel test main noddle on contactor can according to actual needs into
The corresponding adjustment of row, is not tested main noddle on contactor number by overload test main noddle on contactor number used in this application and phase shortage
Limitation, while the primary side that can also adjust transformer as needed adapts to the comprehensive of corresponding model with the turn ratio of secondary side
The normal working voltage of protector is closed, every corresponding adjustment on the basis of the application is within the scope of protection of this application.
Claims (8)
1. comprehensive protector of motor tester, which is characterized in that including strong current generator, transformer, ammeter, overload test
Switch, overload test contactor coil, the overload test main noddle on contactor of multiple parallel connections, phase shortage test switch, phase shortage experiment
Contactor coil, the phase shortage experiment main noddle on contactor of multiple parallel connections, leak(age) test resistance one, leak(age) test resistance two, electric leakage
Test switch one, leak(age) test switch two, indicator light, contact one, contact two, A column caps, B column caps, C column caps, D column caps, E column caps
With F column caps, for being connect with alternating-current voltage source, one end of secondary side is separately connected leak(age) test and opens the primary side of the transformer
Close the one of one one end, one end of leak(age) test switch two, contact one, one end of overload test switch and phase shortage test switch
The other end at end, overload test switch connects the other end of Circuit Fault on Secondary Transformer, phase shortage examination by overload test contactor coil
The other end for testing switch tests the other end that contactor coil connects Circuit Fault on Secondary Transformer by phase shortage, and contact two passes through indicator light
The other end of Circuit Fault on Secondary Transformer is connected, the other end of leak(age) test switch one connects C column caps, leakage by leak(age) test resistance one
The other end of electric test switch two connects C column caps by leak(age) test resistance two, and one end of ammeter is used to occur with high current
The Y output ends of device connect, and the other end connects E column caps by the overload test main noddle on contactor of multiple parallel connections respectively and by more
The phase shortage experiment main noddle on contactor of a parallel connection connects F column caps, and the X output ends of strong current generator are touched for being connect with B column caps
First to be used to connect with one end of relay in comprehensive protector of motor, contact two is used for and relay in comprehensive protector of motor
Other end connection, A column caps with the A output ends in comprehensive protector of motor for connecting, and B column caps are used for and electromotor integrated protection
B input terminals connection in device, for being connect with the C output ends in comprehensive protector of motor, D column caps are used for comprehensive with motor C column caps
Close the D input terminals connection in protector, E column caps for connect with the E output ends in comprehensive protector of motor, F column caps for
F input terminals connection in comprehensive protector of motor.
2. comprehensive protector of motor tester according to claim 1, which is characterized in that further include power switch and fusing
Device, for being connect with one end of alternating-current voltage source, the other end connects transformer one by power switch for one end of the fuse
One end of secondary side, the other end of transformer primary side with the other end of alternating-current voltage source for connecting.
3. comprehensive protector of motor tester according to claim 1, which is characterized in that further include voltmeter, the electricity
One end of one end connection transformer primary side of table, the other end is pressed to connect the other end of transformer primary side.
4. comprehensive protector of motor tester according to claim 3, which is characterized in that the range of the voltmeter is 0-
250V。
5. comprehensive protector of motor tester according to any one of claims 1-4, which is characterized in that the transformer
The input voltage of primary side is the voltage that voltage value is 220V, and the output voltage of Circuit Fault on Secondary Transformer is the electricity that voltage value is 36V
Pressure.
6. comprehensive protector of motor tester according to claim 1, which is characterized in that the range of the ammeter is 0-
300A。
7. comprehensive protector of motor tester according to claim 1, which is characterized in that the leak(age) test switch one is
The leak(age) test that voltage class is 660V switchs, and leak(age) test switch two is the leak(age) test switch that voltage class is 1140V.
8. comprehensive protector of motor tester according to claim 7, which is characterized in that the leak(age) test resistance one
Resistance value is 20K Ω, and the resistance value of rated power 10W, the leak(age) test resistance two are 40K Ω, rated power 10W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820349794.6U CN207882372U (en) | 2018-03-14 | 2018-03-14 | Comprehensive protector of motor tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820349794.6U CN207882372U (en) | 2018-03-14 | 2018-03-14 | Comprehensive protector of motor tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207882372U true CN207882372U (en) | 2018-09-18 |
Family
ID=63497150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820349794.6U Expired - Fee Related CN207882372U (en) | 2018-03-14 | 2018-03-14 | Comprehensive protector of motor tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207882372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594053A (en) * | 2018-03-14 | 2018-09-28 | 四川川煤华荣能源股份有限公司 | Comprehensive protector of motor tester |
-
2018
- 2018-03-14 CN CN201820349794.6U patent/CN207882372U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594053A (en) * | 2018-03-14 | 2018-09-28 | 四川川煤华荣能源股份有限公司 | Comprehensive protector of motor tester |
| CN108594053B (en) * | 2018-03-14 | 2024-03-29 | 四川川煤华荣能源股份有限公司 | Tester for comprehensive protector of motor |
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Granted publication date: 20180918 Termination date: 20200314 |