CN204375669U - Residual current circuit breaker is reported to the police and not to be tripped module - Google Patents
Residual current circuit breaker is reported to the police and not to be tripped module Download PDFInfo
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- CN204375669U CN204375669U CN201520001112.9U CN201520001112U CN204375669U CN 204375669 U CN204375669 U CN 204375669U CN 201520001112 U CN201520001112 U CN 201520001112U CN 204375669 U CN204375669 U CN 204375669U
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Abstract
Residual current circuit breaker is reported to the police and not to be tripped module, comprise signal input circuit, switching circuit and warning output loop, described signal input circuit comprises relay contact series unit and the first relay, and switching circuit comprises the second relay, the 3rd relay and the 4th relay; Relay contact series unit comprises the normally closed interlock of the second relay be connected in series and the normally open contact of the 4th relay, signal input circuit is connected with residual current circuit breaker, 4th relay is connected with external power source, the normally open contact of the first relay and the normally open contact composition paralleling switch of the second relay, second relay is connected with external power source by paralleling switch with the coil of the 3rd relay, the contact of the 3rd relay of switching circuit be serially connected in warning output loop.Residual current circuit breaker of the present utility model is reported to the police the warning that namely module can realize leaking electricity of not tripping, and can effectively avoid again terminal block mistake to cause module to burn out, structure is simple, and cost is low.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, particularly relates to a kind of residual current circuit breaker and reports to the police and not trip module.
Background technology
Residual current action breaker is widely used in directly contacting in the circuit networking of protection against electric shock and indirect contact protection against electric shock, can automatic shutoff circuit when human body touches electrified body or apparatus insulated damage formation earth fault.But there are equipment component and place can not direct automatic shutoff circuit, as emergency power supply, the pathway lighting of public place; Guarantee the equipment of public place safety; The power supply of fire-fighting equipment, as Fire lift, fire pump, fire fighting passageway illumination etc.; The power supply of burglar alarm; Other do not allow special installation and the place of power failure.For this reason, just require that residual current circuit breaker has residue and to report to the police not trip avoidance function, meet actual operation requirements.
The warning of residual current circuit breaker in the market is not tripped module, and generally with the module that semiconductor components and devices or midget relay are main components, the module of prior art installs and uses safeguard procedures improperly because of no user, easily causes module to burn out.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, provides a kind of structure is simple, cost is low residual current circuit breaker to report to the police the module that do not trip.
For achieving the above object, the utility model have employed following technical scheme:
A kind of residual current circuit breaker warning is not tripped module, comprise the signal input circuit be connected with residual current circuit breaker for receiving electric leakage signal, the switching circuit be connected with external power source and signal input circuit, the warning output loop of output alarm information is connected with switching circuit, described signal input circuit comprises relay contact series unit and the first relay K M1, and switching circuit comprises the second relay K M2, the 3rd relay K M3 and the 4th relay K M4, relay contact series unit comprises the normally closed interlock of the second relay K M2 be connected in series and the normally open contact of the 4th relay K M4, or comprises the normally closed interlock of the 3rd relay K M3 be connected in series and the normally open contact of the 4th relay K M4, relay contact series unit one end is connected with the first signal end L1 of residual current circuit breaker, and the other end is connected with one end of the coil of the first relay K M1, and the other end of the coil of the first relay K M1 is connected with the secondary signal end L3 of residual current circuit breaker, one end of the coil of the 4th relay K M4 is connected with the first input end P1 of external power supply, the other end is connected with the second input P2 of external power supply, the normally open contact of the first relay K M1 and the normally open contact composition paralleling switch of the second relay K M2, one end of the coil of one end of paralleling switch and one end of the coil of the second relay K M2 and the 3rd relay K M3 is connected, the other end of the coil of the second relay K M2 is all connected with one end of the coil of the 4th relay K M4 with the other end of the coil of the 3rd relay K M3, the other end of paralleling switch is connected with the other end of the coil of the 4th relay K M4, the contact of the 3rd relay K M3 is serially connected in the output realizing alarm signal in warning output loop and controls.
Further, described signal input circuit also comprises the first anti-interference unit be arranged between relay contact series unit and the first relay K M1; First anti-interference unit comprises the first resistance R1, the 3rd resistance R3 and the first electric capacity C1; 3rd resistance R3 is connected with one end of the first resistance R1 with the one end after the first electric capacity C1 parallel connection, and the other end is connected with relay contact series unit, and the other end of the first resistance R1 is connected with the coil of the first relay K M1.
Further, signal input circuit also comprises the second electric capacity C2 and the first voltage stabilizing didoe VS1 that arrange with the first relay K M1 coils from parallel connection of coils respectively; One end of first relay K M1 coil is connected with the negative pole of one end of the second electric capacity C2 and the first voltage stabilizing didoe VS1, and the other end of the first relay K M1 coil is connected with the positive pole of the other end of the second electric capacity C2 and the first voltage stabilizing didoe VS1.
Further, described signal input circuit also comprises the first resistance R1, the diode VD8 be connected in parallel with the two ends of the coil of the first relay K M1 respectively and the first voltage stabilizing didoe VS1; First resistance R1 one end is connected with relay contact series unit, the other end is connected with one end of the coil of the first relay K M1, one end that the coil of the first relay K M1 is connected with the first resistance R1 is connected with the negative pole of the first voltage stabilizing didoe VS1 and the negative pole of diode VD8, and the other end of the coil of the first relay K M1 is connected with the positive pole of the first voltage stabilizing didoe VS1 and the positive pole of diode VD8.
Further, described switching circuit also comprises and is arranged on the 4th rectification circuit between relay K M4 and external power supply, and the second anti-interference unit between the first input end P1 being arranged on rectification circuit and external power supply, second anti-interference unit comprises the second resistance R2, the 4th resistance R4 and the 3rd electric capacity C3, and rectification circuit comprises rectifier bridge VD7; 4th resistance R4 is connected with one end of the second resistance R2 with one end of the 3rd electric capacity C3 parallel connection, the other end is connected with an input of rectifier bridge VD7, the other end of the second resistance R2 is connected with the first input end P1 of external power supply, another input of rectifier bridge VD7 is connected with one end of reset button SB, the other end of reset button SB is connected with the second input P2 of external power supply, an output of rectifier bridge VD7 is connected with one end of the coil of the 4th relay K M4, and another output of rectifier bridge VD7 is connected with the other end of the coil of the 4th relay K M4.
Further, described switching circuit also comprises the 4th electric capacity C4 and the second voltage stabilizing didoe VS2 that are arranged in parallel with the 4th relay respectively.
Further, described switching circuit also comprises light-emitting diode and the 5th resistance R5; The positive pole of light-emitting diode is connected to one end of the coil of the 4th relay K M4, and its negative pole is connected with one end of the 5th resistance R5, and the other end of the 5th resistance R5 is connected to one end that paralleling switch is connected with the coil of the second relay K M2.
Further, described warning output loop comprises alarm unit; The warning pin of described alarm unit is connected by the normally closed interlock of the 3rd relay with control pin.
Further, described warning output loop comprises normal signal display unit and alarm signal display unit, the normally closed interlock of the 3rd relay K M3 is connected in the loop of normal signal display unit, and the normally open contact of the 3rd relay K M3 is connected in the loop of alarm signal display unit.
The utility model realizes leakage-current alarm by the first ~ three relay; realize, to the protection of module of not tripping of reporting to the police, namely can realizing the warning of leaking electricity by the 4th relay, can effectively avoid again terminal block mistake cause the reporting to the police module that do not trip to burn out; structure is simple, and cost is low.
Accompanying drawing explanation
Fig. 1 adopts the utility model not trip the residual current circuit breaker electrical block diagram of module;
Fig. 2 is the structural representation of the signal input circuit of the utility model embodiment one;
Fig. 3 is the structural representation of the switching circuit of the utility model embodiment one;
Fig. 4 is the structural representation of the warning output loop of the utility model embodiment one;
Fig. 5 is the 3rd relay normally closed interlock schematic diagram in the warning output loop of the utility model embodiment one;
Fig. 6 is the structural representation of the signal input circuit of the utility model embodiment two.
Embodiment
Below in conjunction with the embodiment that accompanying drawing 1 to 6 provides, further illustrate residual current circuit breaker of the present utility model and to report to the police the embodiment of module of not tripping.The report to the police module that do not trip of residual current circuit breaker of the present utility model is not limited to the description of following examples.
Embodiment one
The electric leakage signal that present embodiment residual current circuit breaker is supplied to signal input circuit is alternating message source.
Be illustrated in figure 1 a kind of electrical block diagram of residual current circuit breaker, Fig. 2 ~ 5 are depicted as residual current circuit breaker and report to the police and not trip module, and the module that do not trip of reporting to the police is connected realization and reports to the police not trip avoidance function with signal end L1, L3 of residual current circuit breaker.
The residual current circuit breaker of the present utility model module that do not trip with reporting to the police comprises the signal input circuit be connected with residual current circuit breaker for receiving electric leakage signal, the switching circuit be connected with external power source and signal input circuit, is connected the warning output loop of output alarm information with switching circuit.Signal input circuit comprises relay contact series unit and the first relay K M1, and switching circuit comprises the second relay K M2, the 3rd relay K M3 and the 4th relay K M4, relay contact series unit comprises the normally closed interlock of the second relay K M2 be connected in series and the normally open contact of the 4th relay K M4, relay contact series unit one end is connected with the first signal end L1 of residual current circuit breaker, the other end is connected with one end of the coil of the first relay K M1, and the other end of the coil of the first relay K M1 is connected with the secondary signal end L3 of residual current circuit breaker, one end of the coil of the 4th relay K M4 is connected with the first input end P1 of external power supply, the other end is connected with the second input P2 of external power supply, the normally open contact of the first relay K M1 and the normally open contact composition paralleling switch of the second relay K M2, one end of the coil of one end of paralleling switch and one end of the coil of the second relay K M2 and the 3rd relay K M3 is connected, the other end of the coil of the second relay K M2 is all connected with one end of the coil of the 4th relay K M4 with the other end of the coil of the 3rd relay K M3, the other end of paralleling switch is connected with the other end of the coil of the 4th relay K M4, the contact of the 3rd relay is serially connected in the output realizing alarm signal in warning output loop and controls.Obviously, in relay contact series unit, the tandem of the normally closed interlock of the second relay K M2 and the normally open contact of the 4th relay K M4 can exchange.Certainly, what be connected in series with the 4th relay K M4 in relay contact series unit also can be the normally closed interlock of the 3rd relay K M3, now only needs a 3rd relay K M3 have two normally open contacts and two normally closed interlocks.
As shown in Figure 2, described signal input circuit also comprises the first anti-interference unit be arranged between relay contact series unit and the first relay K M1; First anti-interference unit comprises the first resistance R1, the 3rd resistance R3 and the first electric capacity C1; 3rd resistance R3 is connected with one end of the first resistance R1 with the one end after the first electric capacity C1 parallel connection, and the other end is connected with relay contact series unit, and the other end of the first resistance R1 is connected with the coil of the first relay K M1.Further, signal input circuit also comprises the second electric capacity C2 and the first voltage stabilizing didoe VS1 that arrange with the first relay K M1 coils from parallel connection of coils respectively; One end of first relay K M1 coil is connected with the negative pole of one end of the second electric capacity C2 and the first voltage stabilizing didoe VS1, and the other end of the first relay K M1 coil is connected with the positive pole of the other end of the second electric capacity C2 and the first voltage stabilizing didoe VS1.
As shown in Figure 3, described switching circuit also comprises and is arranged on the 4th rectification circuit between relay K M4 and external power supply, and the second anti-interference unit between the first input end P1 being arranged on rectification circuit and external power supply, second anti-interference unit comprises the second resistance R2, the 4th resistance R4 and the 3rd electric capacity C3, and rectification circuit comprises rectifier bridge VD7; 4th resistance R4 is connected with one end of the second resistance R2 with one end of the 3rd electric capacity C3 parallel connection, the other end is connected with an input of rectifier bridge VD7, the other end of the second resistance R2 is connected with the first input end P1 of external power supply, another input of rectifier bridge VD7 is connected with one end of reset button SB, the other end of reset button SB is connected with the second input P2 of external power supply, an output of rectifier bridge VD7 is connected with one end of the coil of the 4th relay K M4, and another output of rectifier bridge VD7 is connected with the other end of the coil of the 4th relay K M4.Described switching circuit also comprises light-emitting diode VL (E), 5th resistance R5, the 4th electric capacity C4 be arranged in parallel with the 4th relay K M4 and the second voltage stabilizing didoe VS2, the positive pole of light-emitting diode VL (E) is connected to one end of the coil of the 4th relay K M4, its negative pole is connected with one end of the 5th resistance R5, the other end of the 5th resistance R5 is connected to one end that paralleling switch is connected with the coil of the second relay K M2, the two ends of the 4th electric capacity C4 are connected with the two ends of the coil of the 4th relay K M4 respectively, the two ends of the second voltage stabilizing didoe VS2 are connected with the two ends of the coil of the 4th relay K M4 respectively.
As illustrated in figures 4-5, warning output loop is attached on breaker body D, and warning output loop comprises alarm unit; The warning pin of alarm unit is connected by the normally closed interlock of the 3rd relay K M3 with control pin; When the coil electricity of the 3rd relay K M3 in switching circuit, the normally closed interlock of the 3rd relay K M3 disconnects, normally open contact closes, and namely terminal B11, B14 of alarm unit block, and the alarm HL (red) in remote alarms loop is bright sends alarm signal.Certainly, according to the difference of alarm unit, the warning pin of alarm unit also can be connected by the normally open contact of the 3rd relay K M3 with control pin; When the coil electricity of the 3rd relay K M3 in switching circuit, the normally open contact of the 3rd relay K M3 closes, normally closed interlock disconnects, and namely terminal B11, B14 of alarm unit block, and alarm (long-range) HL (red) in remote alarms loop is bright sends alarm signal.And, warning output loop also can comprise normal signal display unit and alarm signal display unit, 3rd relay K M3 has two normally open contacts and two normally closed interlocks, the normally closed interlock of the 3rd relay K M3 is connected in the loop of normal signal display unit, and the normally open contact of the 3rd relay K M3 is connected in the loop of alarm signal display unit; When the coil electricity of the 3rd relay K M3 in switching circuit, its normally closed interlock disconnects, normally open contact closes, namely terminal B11, B14 of alarm unit block, terminal B11, B12 conducting of alarm unit, alarm HL (red) in remote alarms loop is bright, and HL (green) goes out and sends alarm signal.
Embodiment two
The electric leakage signal that present embodiment residual current circuit breaker is supplied to signal input circuit is DC signal source.
As shown in Figure 6, signal input circuit comprises relay contact series unit and the first relay K M1, relay contact series unit comprises the normally closed interlock of the second relay K M2 be connected in series and the normally open contact of the 4th relay K M4, relay contact series unit one end is connected with the first signal end L1 of residual current circuit breaker, the other end is connected with one end of the coil of the first relay K M1, and the other end of the coil of the first relay K M1 is connected with the secondary signal end L3 of residual current circuit breaker.Described signal input circuit also comprises and is arranged on the first resistance R1 between relay contact series unit and the first relay K M1, the diode VD8 be connected in parallel with the two ends of the coil of the first relay K M1 respectively and the first voltage stabilizing didoe VS1; First resistance R1 one end is connected with relay contact series unit, the other end is connected with one end of the coil of the first relay K M1, one end that the coil of the first relay K M1 is connected with the first resistance R1 is connected with the negative pole of the first voltage stabilizing didoe VS1 and the negative pole of diode VD8, and the other end of the coil of the first relay K M1 is connected with the positive pole of the first voltage stabilizing didoe VS1 and the positive pole of diode VD8.
The circuit structure such as signal input circuit, warning output loop of present embodiment can follow the general of embodiment one, does not repeat them here.Present embodiment is without the need to anti-jamming circuit, and circuit is simple, is conducive to reducing line cost.
Do not trip with the reporting to the police signal input circuit of module of the utility model residual current circuit breaker is connected with residual current circuit breaker, and when switching circuit is connected correct with external power source, the coil electricity of the 4th relay K M4, the normally open contact of the 4th relay K M4 is closed.When supply line does not have residual current signal, signal input circuit does not have residual current signal to input, and the coil of the first relay K M1 is not energized, and the normally open contact of the first relay K M1 disconnects, and warning output loop sends normal working signal.
When there is residual current signal in supply line and exceedes setting value (as 500mA), residual current circuit breaker outputs signal to warning and not to trip the signal input circuit of module, output signal after treatment (as rectification, voltage stabilizing etc.) exports direct current to the first relay K M1, the coil electricity of the first relay K M1, first relay K M1 closes at the normally open contact of switching circuit, switching circuit is connected, the coil of the second relay K M2, the 3rd relay K M3 is energized simultaneously, second relay K M2 closes at the normally open contact of switching circuit, switching circuit self-locking.Meanwhile, the normally closed interlock of the second relay K M2 in signal input circuit disconnects, the power-off of signal input circuit, the first relay K M1 coil blackout, and its normally open contact in signal switching loop also disconnects; 3rd relay K M3 disconnects at the normally closed interlock of warning output loop, and warning output loop sends alarm signal.After leak current fault is removed, press reset button SB, the second relay K M2 and the 3rd relay K M3 power-off, the normally open contact of the second relay K M2 disconnects, and removes self-locking, and the 3rd relay K M3 closes at the normally closed interlock of warning output loop, removes alarm signal.
When exact connect ion failed by switching circuit and external power source (when P1, P2 do not connect with the mains), the coil of the 4th relay K M4 is not energized, and the normally open contact of the 4th relay K M4 disconnects, and signal input circuit disconnects.After now user installation completes, when to carry out in functional test or use procedure with residual current and reach setting value, signal circuit is in off-state because of the normally open contact of the 4th relay K M4, cannot be energized, so all components and parts of signal input circuit would not, because of long-term energising, cause burning out.Switching circuit alarm free signal sends simultaneously, and user must be forced to go to check dependent failure, and till connecting P1, P2 power supply on request, thus serve protective action, alarm module occurs without burning phenomenon.
The utility model realizes leakage-current alarm by the first ~ three relay; realize, to the protection of module of not tripping of reporting to the police, namely can realizing the warning of leaking electricity by the 4th relay, can effectively avoid again terminal block mistake cause the reporting to the police module that do not trip to burn out; structure is simple, and cost is low.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.
Claims (9)
1. a residual current circuit breaker is reported to the police the module that do not trip, comprise the signal input circuit be connected with residual current circuit breaker for receiving electric leakage signal, the switching circuit be connected with external power source and signal input circuit, the warning output loop of output alarm information is connected with switching circuit, it is characterized in that: described signal input circuit comprises relay contact series unit and the first relay K M1, switching circuit comprises the second relay K M2, the 3rd relay K M3 and the 4th relay K M4, relay contact series unit comprises the normally closed interlock of the second relay K M2 be connected in series and the normally open contact of the 4th relay K M4, or comprises the normally closed interlock of the 3rd relay K M3 be connected in series and the normally open contact of the 4th relay K M4, relay contact series unit one end is connected with the first signal end L1 of residual current circuit breaker, and the other end is connected with one end of the coil of the first relay K M1, and the other end of the coil of the first relay K M1 is connected with the secondary signal end L3 of residual current circuit breaker, one end of the coil of the 4th relay K M4 is connected with the first input end P1 of external power supply, the other end is connected with the second input P2 of external power supply, the normally open contact of the first relay K M1 and the normally open contact composition paralleling switch of the second relay K M2, one end of the coil of one end of paralleling switch and one end of the coil of the second relay K M2 and the 3rd relay K M3 is connected, the other end of the coil of the second relay K M2 is all connected with one end of the coil of the 4th relay K M4 with the other end of the coil of the 3rd relay K M3, the other end of paralleling switch is connected with the other end of the coil of the 4th relay K M4, the contact of the 3rd relay K M3 is serially connected in the output realizing alarm signal in warning output loop and controls.
2. residual current circuit breaker according to claim 1 is reported to the police the module that do not trip, and it is characterized in that: described signal input circuit also comprises the first anti-interference unit be arranged between relay contact series unit and the first relay K M1; First anti-interference unit comprises the first resistance R1, the 3rd resistance R3 and the first electric capacity C1; 3rd resistance R3 is connected with one end of the first resistance R1 with the one end after the first electric capacity C1 parallel connection, and the other end is connected with relay contact series unit, and the other end of the first resistance R1 is connected with the coil of the first relay K M1.
3. residual current circuit breaker according to claim 2 is reported to the police the module that do not trip, and it is characterized in that: signal input circuit also comprises the second electric capacity C2 and the first voltage stabilizing didoe VS1 that arrange with the first relay K M1 coils from parallel connection of coils respectively; One end of first relay K M1 coil is connected with the negative pole of one end of the second electric capacity C2 and the first voltage stabilizing didoe VS1, and the other end of the first relay K M1 coil is connected with the positive pole of the other end of the second electric capacity C2 and the first voltage stabilizing didoe VS1.
4. residual current circuit breaker according to claim 1 is reported to the police the module that do not trip, and it is characterized in that: described signal input circuit also comprises the first resistance R1, the diode VD8 be connected in parallel with the two ends of the coil of the first relay K M1 respectively and the first voltage stabilizing didoe VS1; First resistance R1 one end is connected with relay contact series unit, the other end is connected with one end of the coil of the first relay K M1, one end that the coil of the first relay K M1 is connected with the first resistance R1 is connected with the negative pole of the first voltage stabilizing didoe VS1 and the negative pole of diode VD8, and the other end of the coil of the first relay K M1 is connected with the positive pole of the first voltage stabilizing didoe VS1 and the positive pole of diode VD8.
5. not trip module according to the arbitrary described residual current circuit breaker warning of Claims 1-4, it is characterized in that: described switching circuit also comprises and is arranged on the 4th rectification circuit between relay K M4 and external power supply, and the second anti-interference unit between the first input end P1 being arranged on rectification circuit and external power supply, second anti-interference unit comprises the second resistance R2, the 4th resistance R4 and the 3rd electric capacity C3, and rectification circuit comprises rectifier bridge VD7; 4th resistance R4 is connected with one end of the second resistance R2 with one end of the 3rd electric capacity C3 parallel connection, the other end is connected with an input of rectifier bridge VD7, the other end of the second resistance R2 is connected with the first input end P1 of external power supply, another input of rectifier bridge VD7 is connected with one end of reset button SB, the other end of reset button SB is connected with the second input P2 of external power supply, an output of rectifier bridge VD7 is connected with one end of the coil of the 4th relay K M4, and another output of rectifier bridge VD7 is connected with the other end of the coil of the 4th relay K M4.
6. residual current circuit breaker according to claim 5 is reported to the police the module that do not trip, and it is characterized in that: described switching circuit also comprises the 4th electric capacity C4 and the second voltage stabilizing didoe VS2 that are arranged in parallel with the 4th relay respectively.
7. residual current circuit breaker according to claim 6 is reported to the police the module that do not trip, and it is characterized in that: described switching circuit also comprises light-emitting diode and the 5th resistance R5; The positive pole of light-emitting diode is connected to one end of the coil of the 4th relay K M4, and its negative pole is connected with one end of the 5th resistance R5, and the other end of the 5th resistance R5 is connected to one end that paralleling switch is connected with the coil of the second relay K M2.
8. not trip module according to the arbitrary described residual current circuit breaker warning of Claims 1-4, it is characterized in that: described warning output loop comprises alarm unit; The warning pin of described alarm unit is connected by the normally closed interlock of the 3rd relay with control pin.
9. not trip module according to the arbitrary described residual current circuit breaker warning of Claims 1-4, it is characterized in that: described warning output loop comprises normal signal display unit and alarm signal display unit, the normally closed interlock of the 3rd relay K M3 is connected in the loop of normal signal display unit, and the normally open contact of the 3rd relay K M3 is connected in the loop of alarm signal display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001112.9U CN204375669U (en) | 2015-01-03 | 2015-01-03 | Residual current circuit breaker is reported to the police and not to be tripped module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001112.9U CN204375669U (en) | 2015-01-03 | 2015-01-03 | Residual current circuit breaker is reported to the police and not to be tripped module |
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| CN204375669U true CN204375669U (en) | 2015-06-03 |
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| CN201520001112.9U Active CN204375669U (en) | 2015-01-03 | 2015-01-03 | Residual current circuit breaker is reported to the police and not to be tripped module |
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| CN (1) | CN204375669U (en) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of utility model: Alarm non trip module for residual current circuit breaker Granted publication date: 20150603 License type: Common License Record date: 20201021 |
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| EE01 | Entry into force of recordation of patent licensing contract |