CN216052152U - Voltage transformer characteristic test box - Google Patents
Voltage transformer characteristic test box Download PDFInfo
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- CN216052152U CN216052152U CN202122398762.XU CN202122398762U CN216052152U CN 216052152 U CN216052152 U CN 216052152U CN 202122398762 U CN202122398762 U CN 202122398762U CN 216052152 U CN216052152 U CN 216052152U
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Abstract
The utility model discloses a voltage transformer characteristic test box which comprises a box body, wherein one end of the box body is provided with a plurality of wiring ports, and wiring sockets are arranged in the wiring ports and are connected with test equipment; a primary switch mechanism and a secondary switch mechanism are arranged in the box body and are connected with the wiring socket; the two-stage switching mechanism includes an S1 switch and an S2 switch. The device solves the problems that in the prior art, the wiring needs to be frequently disconnected, restored and changed in different phases and different windings during wiring, and the working efficiency is low.
Description
Technical Field
The utility model belongs to the technical field of mutual inductor testing, and particularly relates to a voltage mutual inductor characteristic test box.
Background
The voltage transformer is one of common devices in power production, converts large voltage of primary equipment into small voltage, and is used for secondary circuits of relay protection or metering and the like. The voltage transformer characteristic test plays an important role in the selection of the voltage transformer, the design of a secondary circuit of the voltage transformer and the analysis of the operation condition of the voltage transformer. Because the field voltage transformer is mostly a three-phase multi-winding transformer, the current characteristic test needs operators to frequently disconnect, restore and change test wiring in different phases of the transformer and different windings, and frequently adjust the parameter setting of the transformer tester according to the test requirements, so that the workload of the operators is increased, and the test efficiency is seriously influenced.
In view of the above situation, it is necessary to design a voltage transformer characteristic test box to solve the above problems.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a voltage transformer characteristic test box, solves the problems that in the prior art, disconnection, connection recovery and connection change are frequently carried out on different phases and different windings during connection, and the operation efficiency is low, and has the characteristics of convenience in connection, capability of switching connection by direct switching and high efficiency.
In order to realize the technical effects, the utility model adopts the technical scheme that: a voltage transformer characteristic test box comprises a box body, wherein one end of the box body is provided with a plurality of wiring ports, and wiring sockets are arranged in the wiring ports and are connected with test equipment; a primary switch mechanism and a secondary switch mechanism are arranged in the box body and are connected with the wiring socket; the two-stage switching mechanism includes an S1 switch and an S2 switch.
Furthermore, the wiring terminal of the wiring socket is provided with a corresponding label for convenient operation and connection.
Preferably, the test equipment comprises a voltage transformer and a transformer tester.
Preferably, the primary switching mechanism comprises an AS1 diverter switch and an AS2 diverter switch; one end of the AS1 change-over switch is respectively connected with the S1 ends of different windings of the A phase of the voltage transformer, and the other end of the AS1 change-over switch is connected with the S1 change-over switch; one end of the AS2 change-over switch is respectively connected with the S2 ends of different windings of the A phase of the voltage transformer, and the other end is connected with the S2 change-over switch.
Preferably, the primary switching mechanism comprises a BS1 transfer switch and a BS2 transfer switch; one end of the BS1 change-over switch is respectively connected with the S1 ends of different windings of the B phase of the voltage transformer, and the other end of the BS1 change-over switch is connected with the S1 change-over switch; one end of the BS2 change-over switch is respectively connected with the S2 ends of different windings of the B phase of the voltage transformer, and the other end of the BS2 change-over switch is connected with the S2 change-over switch.
Preferably, the primary switching mechanism comprises a CS1 transfer switch and a CS2 transfer switch; one end of the CS1 change-over switch is respectively connected with the S1 ends of different windings of the voltage transformer C, and the other end is connected with the S1 change-over switch; one end of the CS2 change-over switch is respectively connected with the S2 ends of different windings of the C phase of the voltage transformer, and the other end is connected with the S2 change-over switch.
Preferably, the primary switching mechanism includes a P1 transfer switch and a P2 transfer switch; one end of a P1 change-over switch is respectively connected with the P1 end of the three phases of the voltage transformer, and the other end of the change-over switch is connected with the S1 and the M1 interfaces of the transformer tester; one end of the P2 change-over switch is respectively connected with the P2 end of the three phases of the voltage transformer, and the other end is connected with the S2 and M2 interfaces of the transformer tester.
Preferably, the secondary switching mechanism comprises an L1 transfer switch and an L2 transfer switch; one end of the L1 change-over switch is connected with the S1 change-over switch after short circuit, and the other end is respectively connected with an S1 interface, an M1 interface and a P1 interface of the mutual inductor tester; one end of the L2 change-over switch is connected with the S2 change-over switch after short circuit, and the other end is respectively connected with the S2 interface, the M2 interface and the P2 interface of the mutual inductor tester.
Preferably, the primary switching mechanism, the S1 change-over switch and the S2 change-over switch are three-gear free change-over switches; the L1 change-over switch and the L2 change-over switch are two-gear free change-over switches.
Preferably, the three-gear free change-over switch is switched to the 1-gear position to conduct the contacts 1 and 2, the 2-gear position contacts 3 and 4 are conducted, the 3-gear position contacts 5 and 6 are conducted, and zero gears are provided to make all the contacts not conducted; the second gear free change-over switch is switched to the 1 gear position to conduct the contacts 1 and 2, is switched to the 2 gear position to conduct the contacts 3 and 4, and has zero gear position to make all the contacts not conduct.
Further, the wire grouping between different phases is distinguished by different colors, so that the wire grouping is convenient to distinguish by appearance and carry out maintenance inspection.
The voltage transformer characteristic test box provided by the utility model has the following beneficial effects:
this patent is through change over switch, accomplishes the different looks of three-phase voltage transformer, the experimental wiring of secondary winding group class characteristic and switches, realizes the body and the secondary load characteristic test of three-phase voltage transformer different looks, different secondary winding, can increase substantially the operating efficiency, practices thrift manpower and material resources.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic wiring diagram of the present invention;
FIG. 2 is a schematic external view of the present invention;
the reference numbers in the figures are: the system comprises a box body 1, an AS1 change-over switch 6, an AS2 change-over switch 7, a BS1 change-over switch 8, a BS2 change-over switch 9, a CS1 change-over switch 10, a CS2 change-over switch 11, a P1 change-over switch 12, a P2 change-over switch 13, a S1 change-over switch 14, a S2 change-over switch 15, an L1 change-over switch 16, an L2 change-over switch 17, a voltage transformer A phase 21, a voltage transformer B phase 22, a voltage transformer C phase 23, a transformer tester 31, a wiring port 32 and a wiring socket 33.
Detailed Description
As shown in fig. 1-2, a characteristic test box for a voltage transformer comprises a box body 1, wherein one end of the box body 1 is provided with a plurality of wiring ports 32, and wiring sockets 33 are arranged in the wiring ports 32 and connected with test equipment; a primary switch mechanism and a secondary switch mechanism are arranged in the box body 1 and are connected with the wiring socket 33; the two-stage switching mechanism includes the S1 switch 14 and the S2 switch 15.
Further, the terminals of the connection socket 33 are provided with corresponding reference numerals for facilitating the operational connection.
Preferably, the test equipment includes a voltage transformer and transformer tester 31.
Preferably, the primary switching mechanism comprises AS1 diverter switch 6 and AS2 diverter switch 7; one end of the AS1 change-over switch 6 is respectively connected with the S1 ends of different windings of the A phase 21 of the voltage transformer, and the other end is connected with the S1 change-over switch 14; one end of the AS2 change-over switch 7 is connected with the S2 ends of the different windings of the A phase 21 of the voltage transformer, and the other end is connected with the S2 change-over switch 15.
Preferably, the primary switching mechanism comprises BS1 switch 8 and BS2 switch 9; one end of a BS1 change-over switch 8 is respectively connected with the S1 ends of different windings of the B phase 22 of the voltage transformer, and the other end is connected with the S1 change-over switch 14; one end of the BS2 change-over switch 9 is connected with the S2 ends of different windings of the B phase 22 of the voltage transformer, and the other end is connected with the S2 change-over switch 15.
Preferably, the primary switching mechanism comprises CS1 diverter switch 10 and CS2 diverter switch 11; one end of the CS1 change-over switch 10 is respectively connected with the S1 ends of different windings of the C phase 23 of the voltage transformer, and the other end is connected with the S1 change-over switch 14; one end of the CS2 change-over switch 11 is connected with the S2 ends of different windings of the C phase 23 of the voltage transformer, and the other end is connected with the S2 change-over switch 15.
Preferably, the primary switching mechanism includes a P1 switch 12 and a P2 switch 13; one end of the P1 change-over switch 12 is connected with the P1 end of the three phases of the voltage transformer, and the other end is connected with the S1 and M1 interfaces of the transformer tester 31; one end of the P2 change-over switch 13 is connected to the P2 ends of the three phases of the voltage transformer, and the other end is connected to the S2 and M2 interfaces of the transformer tester 31.
Preferably, the secondary switching mechanism includes an L1 switch 16 and an L2 switch 17; one end of the L1 change-over switch 16 is connected with the S1 change-over switch 14 after short circuit, and the other end is respectively connected with the S1 interface, the M1 interface and the P1 interface of the transformer tester 31; one end of the L2 change-over switch 17 is connected with the S2 change-over switch 15 after short circuit, and the other end is respectively connected with the S2 interface, the M2 interface and the P2 interface of the transformer tester 31.
Preferably, the primary switching mechanism, the S1 switch 14 and the S2 switch 15 are three-gear free switches; the L1 switch 16 and the L2 switch 17 are two-stage free changeover switches.
Preferably, the three-gear free change-over switch is switched to the 1-gear position to conduct the contacts 1 and 2, the 2-gear position contacts 3 and 4 are conducted, the 3-gear position contacts 5 and 6 are conducted, and zero gears are provided to make all the contacts not conducted; the second gear free change-over switch is switched to the 1 gear position to conduct the contacts 1 and 2, is switched to the 2 gear position to conduct the contacts 3 and 4, and has zero gear position to make all the contacts not conduct.
Further, the wire grouping between different phases is distinguished by different colors, so that the wire grouping is convenient to distinguish by appearance and carry out maintenance inspection.
The working principle of the voltage transformer characteristic test box provided by the utility model is as follows:
the implementation of related primary and secondary safety measures of the voltage transformer is completed, the voltage transformer is reliably disconnected from primary equipment, one optional end of P1 or P2 is reliably grounded, and a secondary circuit of the voltage transformer connected with an operation device is sealed, so that the misoperation caused by adding the voltage transformer to the operation device in the test process is avoided; dismantling a cable at the S1 end of a secondary wiring terminal of a voltage transformer body, and connecting all primary and secondary test wires of the three-phase voltage transformer into a corresponding wiring socket 33 at the three-phase input end of the voltage transformer of a voltage transformer characteristic test box according to the phase and secondary winding groups as shown in figure 1; various tests such as a voltage transformer excitation characteristic test, a voltage transformer transformation ratio characteristic test and the like can be performed by rotating the related change-over switch.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (8)
1. The utility model provides a voltage transformer characteristic test case which characterized in that: the testing device comprises a box body (1), wherein one end of the box body (1) is provided with a plurality of wiring ports (32), and wiring sockets (33) are arranged in the wiring ports (32) and connected with testing equipment; a primary switch mechanism and a secondary switch mechanism are arranged in the box body (1) and are connected with a wiring socket (33); the two-stage switch mechanism includes an S1 switch (14) and an S2 switch (15).
2. A voltage transformer characteristic test chamber according to claim 1, wherein: the testing apparatus includes a voltage transformer and a transformer tester (31).
3. A voltage transformer characteristic test chamber according to claim 1, wherein: the primary switch mechanism comprises an AS1 change-over switch (6) and an AS2 change-over switch (7); one end of an AS1 change-over switch (6) is respectively connected with the S1 ends of different windings of the A phase (21) of the voltage transformer, and the other end is connected with an S1 change-over switch (14); one end of the AS2 change-over switch (7) is respectively connected with the S2 ends of different windings of the A phase (21) of the voltage transformer, and the other end is connected with the S2 change-over switch (15).
4. A voltage transformer characteristic test chamber according to claim 1, wherein: the primary switch mechanism comprises a BS1 change-over switch (8) and a BS2 change-over switch (9); one end of a BS1 change-over switch (8) is respectively connected with the S1 ends of different windings of the B phase (22) of the voltage transformer, and the other end of the BS1 change-over switch is connected with an S1 change-over switch (14); one end of a BS2 change-over switch (9) is respectively connected with the S2 ends of different windings of the B phase (22) of the voltage transformer, and the other end is connected with an S2 change-over switch (15).
5. A voltage transformer characteristic test chamber according to claim 1, wherein: the primary switching mechanism comprises a CS1 change-over switch (10) and a CS2 change-over switch (11); one end of a CS1 change-over switch (10) is respectively connected with the S1 ends of different windings of the C phase (23) of the voltage transformer, and the other end is connected with an S1 change-over switch (14); one end of a CS2 change-over switch (11) is respectively connected with the S2 ends of different windings of the C phase (23) of the voltage transformer, and the other end is connected with an S2 change-over switch (15).
6. A voltage transformer characteristic test chamber according to claim 1, wherein: the primary switch mechanism comprises a P1 change-over switch (12) and a P2 change-over switch (13); one end of a P1 change-over switch (12) is respectively connected with the P1 end of the three phases of the voltage transformer, and the other end is connected with the S1 and the M1 interface of a transformer tester (31); one end of a P2 change-over switch (13) is respectively connected with the P2 end of the three phases of the voltage transformer, and the other end is connected with the S2 and the M2 interface of the transformer tester (31).
7. A voltage transformer characteristic test chamber according to claim 1, wherein: the secondary switching mechanism comprises an L1 change-over switch (16) and an L2 change-over switch (17); one end of the L1 change-over switch (16) is connected with the S1 change-over switch (14) after short circuit, and the other end is respectively connected with an S1 interface, an M1 interface and a P1 interface of the transformer tester (31); one end of the L2 change-over switch (17) is connected with the S2 change-over switch (15) after short circuit, and the other end is respectively connected with the S2 interface, the M2 interface and the P2 interface of the transformer tester (31).
8. A voltage transformer characteristic test chamber according to claim 1, wherein: the primary switch mechanism, the S1 change-over switch (14) and the S2 change-over switch (15) are three-gear free change-over switches; the L1 change-over switch (16) and the L2 change-over switch (17) are two-gear free change-over switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122398762.XU CN216052152U (en) | 2021-09-30 | 2021-09-30 | Voltage transformer characteristic test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122398762.XU CN216052152U (en) | 2021-09-30 | 2021-09-30 | Voltage transformer characteristic test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216052152U true CN216052152U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122398762.XU Active CN216052152U (en) | 2021-09-30 | 2021-09-30 | Voltage transformer characteristic test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216052152U (en) |
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2021
- 2021-09-30 CN CN202122398762.XU patent/CN216052152U/en active Active
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