CN219349071U - Portable distributor thermal relay calibration device - Google Patents
Portable distributor thermal relay calibration device Download PDFInfo
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- CN219349071U CN219349071U CN202223558525.6U CN202223558525U CN219349071U CN 219349071 U CN219349071 U CN 219349071U CN 202223558525 U CN202223558525 U CN 202223558525U CN 219349071 U CN219349071 U CN 219349071U
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- thermal relay
- relay
- connector male
- plug connector
- protection tester
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model relates to the technical field of thermal relay verification, and particularly discloses a portable switchboard thermal relay verification device, wherein a relay protection tester is used for generating three-phase current required by thermal relay verification; the two ends of the cable are respectively connected with the primary plug connector male plug and the secondary plug connector male plug, and then the primary plug connector male plug and the secondary plug connector male plug are respectively connected with the switchboard drawer switch and the relay protection tester. The device has the advantages of small volume, convenient transportation and simple operation, can realize the thermal relay verification of the low-voltage alternating current switch without disassembling wires, and avoids the human error risk caused by the disassembling wires.
Description
Technical Field
The utility model belongs to the technical field of thermal relay verification, and particularly relates to a portable switchboard thermal relay verification device.
Background
At present, the maintenance of an alternating-current switchboard of a nuclear power plant needs to be verified, the number of the thermal relays related to the alternating-current switchboard is large, the types are complex, the thermal relays need to be removed in a traditional verification mode, because the arrangement of components inside a drawer switch of the switchboard is compact and the space is narrow, great inconvenience is brought to the removal and recovery work of the thermal relays, the maintenance efficiency of the switchboard is influenced, and meanwhile, the risk of equipment abnormality caused by the recovery error of the disassembly lines is introduced to the disassembly lines.
In the overhaul work of the AC distribution board during the overhaul of the nuclear power plant, the shutdown time is short and the number of thermal relays needing to be checked is large, so the thermal relay check is the key work of the overhaul of the distribution board during the overhaul, the requirement of the overhaul work cannot be met by using the traditional method for performing the thermal relay check, the traditional thermal relay check mode is improved for ensuring the smooth completion of the overhaul work of the AC distribution board during the overhaul, and the adverse influence of the thermal relay check work on the whole overhaul period and the overhaul quality is avoided.
Disclosure of Invention
The utility model aims to provide a portable switchboard thermal relay verification device, which can verify a thermal relay of an AC switchboard drawer switch without disconnecting.
The technical scheme of the utility model is as follows:
a portable switchboard thermal relay verification device comprises a relay protection tester and a connecting device;
the relay protection tester is used for generating three-phase current required by thermal relay verification;
the connecting device comprises a primary plug connector male plug and a secondary plug connector male plug and a cable;
the two ends of the cable are respectively connected with the primary plug connector male plug and the secondary plug connector male plug, and then the primary plug connector male plug and the secondary plug connector male plug are respectively connected with the switchboard drawer switch and the relay protection tester.
Also included are dummy fuses;
the fake fuse is made of solid copper columns, and the size of the fake fuse is consistent with that of a thermal relay.
The pseudo fuse is used for replacing the fuse of the thermal relay before verification, so that the fuse of the thermal relay is prevented from being burnt out in the verification process.
The relay protection tester has stable and adjustable output current.
The relay protection tester has the functions of timing and outputting direct-current voltage.
The relay protection tester is a relay protection tester of various types equipped for a nuclear power plant, and additional purchasing is not needed.
For different types of switchboard drawer switches, the wiring of the male plug side of the primary plug is not required to be changed, and only the secondary plug is required to be respectively connected with a control power supply and a feedback node to be connected with a relay protection tester.
The utility model has the beneficial effects that:
(1) The device has the advantages of small volume, convenient transportation and simple operation, can realize the thermal relay verification of the low-voltage alternating current switch without disassembling wires, and avoids the human error risk caused by the disassembling wires.
(2) The device can reduce the wire disassembling time and effectively improve the maintenance efficiency and the maintenance quality of the alternating-current distribution board.
(3) The core component connecting device and the pseudo fuse of the device have simple materials and low cost.
(4) For different types of drawer switches, the main loop wiring of the connecting device does not need to be changed, only the electric schematic diagram is required to be compared, the secondary plug connector is respectively connected with a control power supply and the feedback node is connected with the relay protection tester, so that the applicability is extremely strong, and the connecting device has larger popularization value.
Drawings
FIG. 1 is a schematic diagram of a practical thermal relay calibration apparatus;
in the figure: 1. a relay protection tester; 2. a connecting cable; 3. the primary plug connector is plugged; 4. the secondary plug connector is plugged; 5. a dummy fuse.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples.
A portable switchboard thermal relay verification device shown in fig. 1 comprises a relay protection tester 1, a connecting device and a pseudo fuse 5.
The relay protection tester 1 is used for generating three-phase current required by thermal relay verification, and requires stable and adjustable output current, and has the functions of timing and outputting direct-current voltage. The relay protection tester of various models, which is usually equipped in the nuclear power plant, can be used without additional purchasing.
The connecting device comprises a cable 2, a primary plug connector male plug 3 and a secondary plug connector male plug 4. The two ends of the cable 2 are respectively connected with a primary plug connector male plug 3 and a secondary plug connector male plug 4, and then the primary plug connector male plug 3 and the secondary plug connector male plug 4 are respectively connected with a switchboard drawer switch and a relay protection tester 1. For different types of switchboard drawer switches, the wiring of the male plug side of the primary plug connected to the primary loop of the switchboard drawer switches is not required to be changed, and only by comparing with an electrical schematic diagram, the control power supply is respectively connected to the male plug 4 of the secondary plug, and the feedback node is connected to the relay protection tester 1.
The dummy fuse 5 is made of a solid copper column, and the size of the dummy fuse is consistent with that of a thermal relay. When thermal relay verification is performed, the verification current is larger than the rated current of the switch, and the risk of fuse burning exists. Therefore, the fuse of the thermal relay is replaced by the pseudo fuse 5 before verification, so that the condition that the fuse is burnt out in the verification process can be avoided.
While the fundamental principles, principal features, and advantages of the present utility model have been shown and described, it will be apparent to those skilled in the art that the present utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A portable switchboard heat relay verifying attachment, its characterized in that: comprises a relay protection tester and a connecting device;
the relay protection tester is used for generating three-phase current required by thermal relay verification;
the connecting device comprises a primary plug connector male plug and a secondary plug connector male plug and a cable;
the two ends of the cable are respectively connected with the primary plug connector male plug and the secondary plug connector male plug, and then the primary plug connector male plug and the secondary plug connector male plug are respectively connected with the switchboard drawer switch and the relay protection tester.
2. A portable switchboard thermal relay verification device according to claim 1, characterized in that: also included are dummy fuses;
the fake fuse is made of solid copper columns, and the size of the fake fuse is consistent with that of a thermal relay.
3. A portable switchboard thermal relay verification device according to claim 2, characterized in that: the pseudo fuse is used for replacing the fuse of the thermal relay before verification, so that the fuse of the thermal relay is prevented from being burnt out in the verification process.
4. A portable switchboard thermal relay verification device according to claim 1, characterized in that: the relay protection tester has stable and adjustable output current.
5. A portable switchboard thermal relay verification device according to claim 4, characterized in that: the relay protection tester has the functions of timing and outputting direct-current voltage.
6. A portable switchboard thermal relay verification device according to claim 5, characterized in that: the relay protection tester is a relay protection tester equipped in a nuclear power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223558525.6U CN219349071U (en) | 2022-12-29 | 2022-12-29 | Portable distributor thermal relay calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223558525.6U CN219349071U (en) | 2022-12-29 | 2022-12-29 | Portable distributor thermal relay calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219349071U true CN219349071U (en) | 2023-07-14 |
Family
ID=87106170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223558525.6U Active CN219349071U (en) | 2022-12-29 | 2022-12-29 | Portable distributor thermal relay calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219349071U (en) |
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2022
- 2022-12-29 CN CN202223558525.6U patent/CN219349071U/en active Active
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