CN214122409U - Ship low-voltage air circuit breaker protection function testing device - Google Patents
Ship low-voltage air circuit breaker protection function testing device Download PDFInfo
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- CN214122409U CN214122409U CN202022536942.5U CN202022536942U CN214122409U CN 214122409 U CN214122409 U CN 214122409U CN 202022536942 U CN202022536942 U CN 202022536942U CN 214122409 U CN214122409 U CN 214122409U
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Abstract
The utility model discloses a boats and ships low pressure air circuit breaker protect function testing arrangement, including switch, 5 3x2.5mm2The outside connects cable, 5 external connection ports and control box, every the outside connects cable length 5 meters, just outside connection cable both ends set up in connecting, the outside connects cable connection control box's one end to be aviation formula plug, and with aviation socket phase-match on the control box, the outside connects the other end of cable to be the clamp formula and connects for the clamp connectsOn the interface of the test loop. The utility model provides a boats and ships low pressure air circuit breaker protect function testing arrangement, the structure is light, easy operation, measuring accuracy is high, application scope is wide, with low costs, security advantage such as high, for the circuit breaker maintenance of ship repair factory detects and provides very big facility, is showing to have reduced single ship cost of maintenance and improvement maintenance efficiency.
Description
Technical Field
The utility model relates to a boats and ships maintenance detects technical field, especially relates to a boats and ships low pressure air circuit breaker protect function testing arrangement.
Background
The air circuit breakers on the ship mainly refer to circuit breakers of the generator, and are all provided with protection functions of overcurrent, grading unloading, undervoltage, reverse power and the like so as to ensure that the fault generator can be timely cut off and isolated when the faults occur on the line, and ensure that normal electric equipment can continuously and reliably run. According to the relevant classification society standard requirements, the air circuit breaker needs to be inspected every year at regular intervals, so related cleaning, maintenance and related protection set value verification are needed at ordinary times, and the circuit breaker is disassembled to be maintained and maintained when necessary, such as replacement of parts which are worn and aged, so that reliable action of each part of the circuit breaker is ensured, and accurate execution of the protection function of the circuit breaker is finally realized.
The method is necessary for detecting the protection function of the repaired circuit breaker, and the existing shipyard has the following detection methods: firstly, a special breaker detection device is adopted. However, each brand of circuit breaker has a special detection device product, but the detection devices of the circuit breakers of different brands and different models cannot be shared; secondly, the circuit breaker is more fast to be updated and replaced, and dedicated detection device cost is higher, so shipyard generally can not purchase the detection device of each brand. And secondly, temporarily lapping a simulation test loop of the air circuit breaker on a ship, and sending signals such as voltage or current of the fault of the line to the air circuit breaker. The method is simple and low in cost, and due to the fact that construction environment is severe on the ship, such as noisy environment, sultry environment (poor ventilation), narrow space, messy stacking of various industrial repair facilities and the like, on-site lapping work of the circuit breaker testing circuit is influenced, risks of messy circuit arrangement, wrong lapping or poor contact are caused, and safety accidents are easily caused. This is a high quality requirement for operators, which requires careful, careful and strict procedures. The construction is complex, the efficiency is low, the error is high, the potential safety hazard is large, and the innovation and the improvement of the existing detection method are urgently needed aiming at the defects.
In order to solve the problems, a protection function testing device for a low-voltage air circuit breaker of a ship is provided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of boats and ships low pressure air circuit breaker protect function testing arrangement to solve the problem that the circuit breaker maintenance in the past that above-mentioned background art provided detected difficulty, numerous and diverse, inefficiency, error risk are big, with high costs and potential safety hazard.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a ship low-voltage air circuit breaker protection function testing device comprises a power switch and 5 pieces of 3x2.5mm2The test circuit comprises an external connecting cable, 5 external connecting ports and a control box, wherein each external connecting cable is 5 meters long, two ends of each external connecting cable are arranged on a connector, one end of each external connecting cable, which is connected with the control box, is an aviation plug and is matched with an aviation socket on the control box, and the other end of each external connecting cable is a clamp-type connector and is used for clamping and connecting an interface of a test circuit;
the utility model discloses a test device, including control box, port I, port II, port III, port IV, port V, 5, be provided with 5 external wiring ports on the box of control box, and it is port I, port II, port III, port IV, port V, 5 respectively the external wiring port is aviation socket, the external bank power supply of port I provides the power for whole testing arrangement, the external three-phase AC voltage regulator primary side of port II, the external three-phase AC voltage regulator secondary side of port III for the test voltage and the electric current of adjustment output, port IV is for exporting test voltage signal, port V is for exporting test current signal.
Preferably, the three-phase alternating current voltage regulator is externally portable, is installed on the outer side of the control box, and is connected with the control box through a port II and a port III.
Preferably, the port I passes through 3x2.5mm2An external patch cable is connected to the shore power system onboard the vessel, and the shore power system power supply is accessible from a 440V backup breaker on the switchboard.
Preferably, switch one side sets up power indicator, just the switch opposite side is connected with the fuse, start button I, stop button I, contactor II are through 2.5mm2The internal connection line connects gradually, just be provided with operation pilot lamp I between stop button I and the contactor II.
Preferably, be connected with contactor I between fuse and the start button I, and the other end of contactor I has connected gradually start button II, stop button II, contactor III, be connected with operation pilot lamp II between stop button II and the contactor III.
Preferably, the contactor II, the voltmeter and the port IV are sequentially connected through internal connecting lines, and the contactor III, the single-phase alternating-current transformer, the ammeter and the port V are sequentially connected through the internal connecting lines.
Preferably, the internal components of the control box pass through 2.5mm2The connecting wires are connected into a control loop and assembled inside a control box of the testing device, and the control box is IP44 in protection grade and made of 1.5mm thick steel.
The utility model has the advantages that:
the portable breaker testing device is convenient to carry, and can be carried by one person to a ship for breaker testing; the wiring operation is simple, 5 external connecting wires are provided with cable joints in advance, and the wiring can be completed through the plugging and clamping of the interfaces without other tools; the operation is simple, and only 2 starting buttons, 2 stopping buttons and 1 voltage regulator can be operated by one person; the test data reading function is that 1 voltmeter and 1 ammeter can meet the requirement of on-site reading of all test data required by the test; the test precision is high, and the accuracy grade of the voltmeter and the ammeter is 0.5%, so that the accuracy of test data is guaranteed;
this boats and ships low pressure air circuit breaker protect function testing arrangement structure is light, easy operation, measuring accuracy is high, application scope is wide, with low costs, security advantage such as high, for the circuit breaker maintenance of ship repair factory detects and provides very big facility, is showing to have reduced single ship cost of maintenance and improvement maintenance efficiency.
Drawings
Fig. 1 is the utility model discloses the component connection diagram of boats and ships low pressure air circuit breaker protect function testing arrangement components and parts.
Fig. 2 is the utility model discloses boats and ships low pressure air circuit breaker protect function test analog control return circuit schematic diagram.
Reference numbers in the figures: 1. a power switch; 2. a power indicator light; 3. a contactor I; 4. a contactor II; 5. a contactor III; 6. a voltmeter; 7. an ammeter; 8. a three-phase ac voltage regulator; 9. a single-phase AC transformer; 10. a single-phase AC transformer; 11. operating an indicator light I; 12. operating an indicator light II; 13. starting a button I; 14. a stop button I; 15. a button II is started; 16. a stop button II; 17. a fuse; 18. a port I; 19. a port II; 20. port III; 21. a port IV; 22. port V; 23. and a control box.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a ship low-voltage air circuit breaker protection function testing device is formed by connecting the following electrical components: 1 power switch 1, 1 power indicator lamp 2, 3 contactors I3, contactors II 4, contactors III 5, 1 voltmeter 6, 1 ammeter 7, 1 three-phase AC voltage regulator 8, 1 single-phase AC transformer 9, 1 single-phase AC transformer 10, 2 running indicator lamp running indicator lamps I11, running indicator lamps II 12, 2 start buttons I13, start buttons II 15, 2 stop buttons I14, stop buttons II 16, 2 fuses 17, 5 external connection cables of 3x2.5mm2 (each length is 5 meters, connectors are needed to be prepared at two ends of the cable, the end connected with the control box is an aviation plug and matched with an aviation socket on the control box, the other end is a clamp connector and is clamped on an interface of a test loop), and a plurality of internal connection wires of 2.5mm2, except the three-phase AC voltage regulator 8, other components are connected into a control loop through a plurality of 2.5mm2 connection wires, the power supply is assembled in a control box 23 of a testing device, the protection grade of the control box 23 is IP44 required, the control box is made of 1.5mm thick steel, a power supply port 18 is connected to a shore power system on a ship through a 3x2.5mm2 external connecting cable, the power supply can be accessed from a 440V standby circuit breaker on a distribution board, therefore, a generator on the ship is in a shutdown maintenance state, a whole ship power supply system is provided by shore power, the interlocking control signal of the shore power on the distribution board and the generator needs to be disconnected at the moment, and otherwise, an air circuit breaker, namely the generator circuit breaker, is not switched on when the shore power exists;
be provided with 5 on control box 23's the box and to external wiring port, and it is port I18, port II 19, port III 20, port IV 21, port V22, 5 respectively the external wiring port is aviation socket, the external bank power supply of port I18 provides the power for whole testing arrangement, the external three-phase AC voltage regulator 8 primary side of port II 19, the external three-phase AC voltage regulator 8 secondary side of port III 20 for the test voltage and the electric current of adjustment output, port IV 21 is for exporting test voltage signal, port V22 is for exporting test current signal.
Port II 19 and port III 20 pass through 3x2.5mm, respectively2The external connecting cable is connected to the primary side and the secondary side of the three-phase alternating current voltage regulator 8;
when the power switch 1 is turned on, the power indicator lamp 2 is on, which indicates that the shore power is switched on;
when the undervoltage protection test is executed, the connection between the voltage signal acquisition port of the undervoltage tripping module of the original air circuit breaker and the original control loop is cut off and passes through 3x2.5mm2An external connecting cable is connected to a port IV 21 of the testing device, a starting button II 15 is pressed, a contactor III 5 is powered on to act, a corresponding contactor III 5 contact is closed, a contactor I3 is powered on to act, a power indicator lamp 12 is lightened to indicate that the overcurrent test is performed, and at the moment, the overcurrent test is performed slowlySlowly rotating the knob of the three-phase alternating-current voltage regulator 8 and observing the voltmeter 6, when the output voltage, namely the reading of the voltmeter, reaches 440V, closing the tested air circuit breaker, slowly adjusting the knob of the three-phase alternating-current voltage regulator 8, reducing the voltage to the tripping time of the air circuit breaker, recording a test undervoltage value, namely the undervoltage tripping voltage value of the air circuit breaker, pressing a stop button II 16 after the test is finished, finishing the test and connecting back to an undervoltage test circuit of the original air circuit breaker;
when the overcurrent protection test is executed, the current signal acquisition port of the overcurrent tripping module of the original air circuit breaker is disconnected and passes through 3x2.5mm2An external connection cable is connected to a port V22 of the testing device, meanwhile, in order to enable the air circuit breaker to be normally closed, a port IV 21 of the testing device is also connected to an original circuit breaker control loop, before starting a power-on test, a three-phase alternating current voltage regulator 8 needs to be adjusted to be in a '0' position, a starting button I13 is pressed, a contactor II 4 is powered on to operate, a contact of the corresponding contactor II 4 is closed, a contactor I3 is powered on to operate, an operation indicator lamp I11 is lightened to indicate that the overcurrent test can be carried out, at the moment, a stop button I14 is pressed when output current, namely reading of an ammeter reaches an overcurrent protection set value required by the test, the starting button I13 is pressed again, and meanwhile, a stopwatch is pressed to calculate protection delay time, after the test is finished, pressing a stop button I14, finishing the test and connecting back an overcurrent test circuit of the original air circuit breaker;
when the reverse power protection test is executed, the current signal acquisition port of the reverse power tripping module of the original air circuit breaker is disconnected, and one phase current acquisition port passes through 3x2.5mm2An external connection cable is connected to a port V22 of the testing device, meanwhile, in order to enable the air circuit breaker to be normally closed, a port IV 21 of the testing device is also connected to an original circuit breaker control loop, before starting the power-on test, the three-phase alternating current voltage regulator 8 needs to be adjusted to a position of 0, a starting button I13 is pressed, a contactor II 4 is powered on to act, a corresponding contactor II 4 contact is closed, a contactor I3 is also powered on to act, and an operation indicator lampI11 is lightened to show that the reverse work test can be carried out; at the moment, by slowly rotating a knob of the three-phase alternating current voltage regulator 8 and observing the voltmeter 6 and the ammeter 7 at the same time, when the reading of the ammeter 7 reaches the current value corresponding to the reverse power protection required by the test, the stop button I14 is pressed, then the start button I13 is pressed again, the tested air circuit breaker is switched on, and the stop time is calculated by pressing the stopwatch at the same time, at the moment, the power reading can be visually tested by means of a power meter in a power management system on the ship, the above test is only one-phase current reverse power protection test, the other two-phase current reverse power test is completed by repeated operation, the stop button I14 is pressed, the test is finished, and the reverse power test circuit of the original air circuit breaker is connected back.
To complete the reverse work test, reverse access may be achieved through port v 22.
The set of test is suitable for both 50HZ and 60HZ frequencies, and for other common voltages of a ship power station, such as 690V/480V and the like, the voltage can be changed into 440V through an additional external transformer.
The working principle is as follows: firstly, disconnecting power supply, voltage and current signal acquisition interfaces of an overcurrent tripping protection module, an undervoltage tripping module or a reverse power tripping module of an original air circuit breaker from a control loop of an original power distribution board;
secondly, according to each test step, the power supply, voltage or current signal acquisition interface of each protection module is connected to an external port IV 21 or a port V22 of the test device;
finally, a power port I18 of the testing device is connected with a shore power supply, and voltage or current signals required by the testing requirements are generated through the adjustment of the three-phase alternating current voltage regulator 8, namely, overcurrent, undervoltage or inverse function signals are simulated, so that the testing of the protection function of the air circuit breaker is realized.
As shown in table 1, the details of the electrical components of the test apparatus for the protection function of the low-voltage air circuit breaker for the ship are as follows:
TABLE 1 electric elements detail table
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A ship low-voltage air circuit breaker protection function testing device comprises power switches (1) and 5 pieces of 3x2.5mm2The test device comprises external connecting cables, 5 external connecting ports and a control box (23), and is characterized in that each external connecting cable is 5 meters long, two ends of each external connecting cable are arranged at connectors, one end of each external connecting cable, which is connected with the control box (23), is an aviation plug and is matched with an aviation socket on the control box (23), and the other end of each external connecting cable is a clamp-type connector and is used for clamping and connecting the external connecting cable on an interface of a test loop;
be provided with 5 on the box of control box (23) and to external wiring port, and it is port I (18), port II (19), port III (20), port IV (21), port V (22), 5 respectively the external wiring port is aviation socket, port I (18) external bank power supply provides the power for whole testing arrangement, port II (19) external three-phase AC voltage regulator (8) primary side, port III (20) external three-phase AC voltage regulator (8) secondary side for the test voltage and the electric current of adjustment output, port IV (21) is for exporting test voltage signal, port V (22) is for exporting test current signal.
2. The device for testing the protection function of the low-voltage air circuit breaker of the ship as claimed in claim 1, wherein the three-phase alternating-current voltage regulator (8) is externally portable, is installed on the outer side of the control box (23), and is connected with the control box (23) through a port II (19) and a port III (20).
3. Device for testing the protection function of a low-voltage air circuit breaker of a ship as claimed in claim 1, wherein the port I (18) passes through 3x2.5mm2An external patch cable is connected to the shore power system onboard the vessel, and the shore power system power supply is accessible from a 440V backup breaker on the switchboard.
4. The device for testing the protection function of the low-voltage air circuit breaker of the ship as claimed in claim 1, wherein a power indicator (2) is arranged on one side of the power switch (1), a fuse (17) is connected to the other side of the power switch (1), and the fuse (17), the start button I (13), the stop button I (14) and the contactor II (4) pass through 2.5mm2The internal connection line connects gradually, just be provided with operation pilot lamp I (11) between stop button I (14) and contactor II (4).
5. The device for testing the protection function of the low-voltage air circuit breaker of the ship as claimed in claim 4, wherein a contactor I (3) is connected between the fuse (17) and the starting button I (13), the other end of the contactor I (3) is sequentially connected with a starting button II (15), a stopping button II (16) and a contactor III (5), and an operation indicator lamp II (12) is connected between the stopping button II (16) and the contactor III (5).
6. The device for testing the protection function of the low-voltage air circuit breaker of the ship as claimed in claim 5, wherein the contactor II (4), the voltmeter (6) and the port IV (21) are sequentially connected through internal connecting wires, and the contactor III (5), the single-phase alternating-current transformer (9), the ammeter (7) and the port V (22) are sequentially connected through internal connecting wires.
7. The device for testing the protection function of the low-voltage air circuit breaker of the ship as claimed in claim 1, wherein the internal components of the control box (23) pass through 2.5mm2The connecting lines are connected into a control loop and assembled inside a control box (23) of the testing device, and the protection grade of the control box (23) is IP44 and the material is 1.5mm thick steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022536942.5U CN214122409U (en) | 2020-11-05 | 2020-11-05 | Ship low-voltage air circuit breaker protection function testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022536942.5U CN214122409U (en) | 2020-11-05 | 2020-11-05 | Ship low-voltage air circuit breaker protection function testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214122409U true CN214122409U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022536942.5U Active CN214122409U (en) | 2020-11-05 | 2020-11-05 | Ship low-voltage air circuit breaker protection function testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214122409U (en) |
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2020
- 2020-11-05 CN CN202022536942.5U patent/CN214122409U/en active Active
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