CN112327016A - Current transformer test wire box - Google Patents
Current transformer test wire box Download PDFInfo
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- CN112327016A CN112327016A CN202011224905.9A CN202011224905A CN112327016A CN 112327016 A CN112327016 A CN 112327016A CN 202011224905 A CN202011224905 A CN 202011224905A CN 112327016 A CN112327016 A CN 112327016A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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Abstract
The invention belongs to the technical field of power systems, and particularly relates to a current transformer test wire box. The current transformer test line box is characterized by comprising a box body, a first change-over switch, a second change-over switch, a third change-over switch, a fourth change-over switch, a fifth change-over switch, a sixth change-over switch, a seventh change-over switch, an eighth change-over switch, a ninth change-over switch, a tenth change-over switch, an eleventh change-over switch and a lead; the first change-over switch, the second change-over switch, the third change-over switch, the fourth change-over switch, the fifth change-over switch, the sixth change-over switch, the seventh change-over switch, the eighth change-over switch, the ninth change-over switch, the tenth change-over switch and the eleventh change-over switch are respectively and fixedly arranged on a panel of the box body. According to the invention, by arranging the plurality of change-over switches, each phase and each winding can be freely switched at the end of the comprehensive tester of the mutual inductor, so that the test efficiency can be greatly improved, and the labor and the time can be saved.
Description
Technical Field
The invention belongs to the technical field of power systems, and particularly relates to a current transformer test wire box.
Background
At present, a current transformer (hereinafter referred to as CT) protection handover test process needs to frequently replace primary wiring and secondary wiring (wiring needs to be frequently replaced between each phase of windings of a terminal block and between each phase of CT), and frequent plugging and unplugging of the test wiring can lead to loose and poor contact of a wiring terminal, so that a test result is influenced, the efficiency of the whole test process is low, and manpower and time are wasted. At present, the protection handover test of the current transformer is schematically wired, as shown in fig. 1.
Disclosure of Invention
The invention aims to provide a current transformer test wire box which improves test efficiency and saves labor and time.
In order to achieve the purpose, the invention adopts the technical scheme that: the current transformer test wire box is characterized by comprising a box body, a first change-over switch K1, a second change-over switch K2, a third change-over switch K3, a fourth change-over switch K4, a fifth change-over switch K5, a sixth change-over switch K6, a seventh change-over switch K7, an eighth change-over switch K8, a ninth change-over switch K9, a tenth change-over switch K10, an eleventh change-over switch K11 and a lead; a first change-over switch K1, a second change-over switch K2, a third change-over switch K3, a fourth change-over switch K4, a fifth change-over switch K5, a sixth change-over switch K6, a seventh change-over switch K7, an eighth change-over switch K8, a ninth change-over switch K9, a tenth change-over switch K10 and an eleventh change-over switch K11 are respectively and fixedly arranged on a panel of the box body;
the input end of a first change-over switch K1 is connected with the P1 output end of the mutual inductor comprehensive tester through a lead, the first output end of the first change-over switch K1 is connected with the A phase P1 input end of the current mutual inductor body, the second output end of the first change-over switch K1 is connected with the B phase P1 input end of the current mutual inductor body, the third output end of the first change-over switch K1 is connected with the C phase P1 input end of the current mutual inductor body, and the fourth output end of the first change-over switch K1 is connected with the zero sequence P1 input end of the current mutual inductor body;
the P2 output end of the transformer comprehensive tester is respectively connected with the A-phase P2 input end, the B-phase P2 input end, the C-phase P2 input end and the zero-sequence P2 input end of the current transformer body through wires;
the input end of a second change-over switch K2 is respectively connected with the S1 output end and the M1 output end of the mutual inductor comprehensive tester through 2 leads, and the A-phase S1 output end of the second change-over switch K2 is connected with the input end of a fourth change-over switch K4 through leads; a first output terminal of the fourth changeover switch K4 is connected by a wire to the a-phase 1S1 input terminal of the terminal block, a second output terminal of the fourth changeover switch K4 is connected by a wire to the a-phase 2S1 input terminal of the terminal block, and a third output terminal of the fourth changeover switch K4 is connected by a wire to the a-phase 3S1 input terminal of the terminal block; the output end of the B phase S1 of the second change-over switch K2 is connected with the input end of a fifth change-over switch K5 by a lead, the first output end of the fifth change-over switch K5 is connected with the input end of the B phase 1S1 of the terminal row by a lead, the second output end of the fifth change-over switch K5 is connected with the input end of the B phase 2S1 of the terminal row by a lead, and the third output end of the fifth change-over switch K5 is connected with the input end of the B phase 3S1 of the terminal row by a lead; the output end of the C phase S1 of the second change-over switch K2 is connected with the input end of a sixth change-over switch K6 by a lead, the first output end of the sixth change-over switch K6 is connected with the input end of the C phase 1S1 of the terminal row by a lead, the second output end of the sixth change-over switch K6 is connected with the input end of the C phase 2S1 of the terminal row by a lead, and the third output end of the sixth change-over switch K6 is connected with the input end of the C phase 3S1 of the terminal row by a lead; the output end of the zero sequence S1 of the second change-over switch K2 is connected with the input end of a seventh change-over switch K7 by a lead, and the output end of the seventh change-over switch K7 is connected with the input end of the zero sequence S1 of the terminal block by a lead;
the input end of the third switch K3 is connected with the S2 output end of the mutual inductor comprehensive tester by 2 wires, m2, the output of phase a S2 of the third switch K3 is connected to the input of an eighth switch K8 by a wire, the first output of eighth switch K8 is connected to the input of phase a 1S2 of the terminal row by a wire, the second output of eighth switch K8 is connected to the input of phase a 1S3 of the terminal row by a wire, the third output of eighth switch K8 is connected to the input of phase a 2S2 of the terminal row by a wire, the fourth output of eighth switch K8 is connected to the input of phase a 2S3 of the terminal row by a wire, the fifth output of eighth switch K8 is connected to the input of phase a 3S2 of the terminal row by a wire, and the sixth output of eighth switch K8 is connected to the input of phase a 3S3 of the terminal row by a wire;
the output end of the B phase S2 of the third change-over switch K3 is connected to the input end of a ninth change-over switch K9 by a wire, the first output end of the ninth change-over switch K9 is connected to the input end of the B phase 1S2 of the terminal row by a wire, the second output end of the ninth change-over switch K9 is connected to the input end of the B phase 1S3 of the terminal row by a wire, the third output end of the ninth change-over switch K9 is connected to the input end of the B phase 2S2 of the terminal row by a wire, the fourth output end of the ninth change-over switch K9 is connected to the input end of the B phase 2S3 of the terminal row by a wire, the fifth output end of the ninth change-over switch K9 is connected to the input end of the B phase 3S2 of the terminal row by a wire, and the sixth output end of the ninth change-over switch K9;
the output end of the C phase S2 of the third switch K3 is connected to the input end of the tenth switch K10 by a wire, the first output end of the tenth switch K10 is connected to the input end of the C phase 1S2 of the terminal row by a wire, the second output end of the tenth switch K10 is connected to the input end of the C phase 1S3 of the terminal row by a wire, the third output end of the tenth switch K10 is connected to the input end of the C phase 2S2 of the terminal row by a wire, the fourth output end of the tenth switch K10 is connected to the input end of the C phase 2S3 of the terminal row by a wire, the fifth output end of the tenth switch K10 is connected to the input end of the C phase 3S2 of the terminal row by a wire, and the sixth output end of the tenth switch K10 is connected to the input end of the C phase 3S3 of the terminal row by a wire;
the output end of the zero sequence S2 of the third change-over switch K3 is connected with the input end of an eleventh change-over switch K11 by a lead, and the output end of the eleventh change-over switch K11 is connected with the input end of the zero sequence S2 of the terminal block by a lead.
The first change-over switch K1, the second change-over switch K2 and the third change-over switch K3 are positioned in a first row, and the first change-over switch K1, the second change-over switch K2 and the third change-over switch K3 are arranged from left to right; the fourth change-over switch K4, the fifth change-over switch K5, the sixth change-over switch K6 and the seventh change-over switch K7 are positioned in the second row, and the fourth change-over switch K4, the fifth change-over switch K5, the sixth change-over switch K6 and the seventh change-over switch K7 are arranged from left to right; the eighth change-over switch K8, the ninth change-over switch K9, the tenth change-over switch K10 and the eleventh change-over switch K11 are located in the third row, and the eighth change-over switch K8, the ninth change-over switch K9, the tenth change-over switch K10 and the eleventh change-over switch K11 are arranged from left to right; the first row, the second row and the third row are arranged in tandem, and the second row is positioned between the first row and the third row.
And neutral position contacts are arranged on the fourth change-over switch K4, the fifth change-over switch K5, the sixth change-over switch K6, the seventh change-over switch K7, the eighth change-over switch K8, the ninth change-over switch K9, the tenth change-over switch K10 and the eleventh change-over switch K11.
The invention has the beneficial effects that: according to the invention, by arranging the plurality of change-over switches, each phase and each winding can be freely switched at the end of the transformer comprehensive tester (or called as a transformer tester), and the wiring does not need to be frequently changed at the current transformer body and the terminal row winding wiring, so that the test efficiency can be greatly improved, and the labor and the time can be saved.
Drawings
Fig. 1 is a schematic diagram of a protection handover test wiring of a conventional current transformer.
Fig. 2 is a schematic structural diagram of the test wire box of the current transformer of the invention.
Fig. 3 is a schematic layout diagram of the switch of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 2 and 3, the current transformer test line box includes a box body (closed box), a first switch K1, a second switch K2, a third switch K3, a fourth switch K4, a fifth switch K5, a sixth switch K6, a seventh switch K7, an eighth switch K8, a ninth switch K9, a tenth switch K10, an eleventh switch K11, and a wire; a first change-over switch K1, a second change-over switch K2, a third change-over switch K3, a fourth change-over switch K4, a fifth change-over switch K5, a sixth change-over switch K6, a seventh change-over switch K7, an eighth change-over switch K8, a ninth change-over switch K9, a tenth change-over switch K10 and an eleventh change-over switch K11 are respectively and fixedly arranged on a panel of the box body;
the input end of a first change-over switch K1 (a change-over switch of 4-5 opening, a neutral gear contact is arranged when 5 opening) is connected with the P1 output end of a mutual inductor comprehensive tester (or a mutual inductor tester) by a lead, the first output end (a first single switch) of the first change-over switch K1 is connected with the input end of the A-phase P1 of the current mutual inductor body, the second output end (a second single switch) of the first change-over switch K1 is connected with the input end of the B-phase P1 of the current mutual inductor body, the third output end (a third single switch) of the first change-over switch K1 is connected with the input end of the C-phase P1 of the current mutual inductor body, and the fourth output end (a fourth single switch) of the first change-over switch K1 is connected with the zero sequence P1 input end of the current mutual inductor body;
the P2 output end of the mutual inductor integrated tester (or mutual inductor tester) is respectively connected with the A phase P2 input end, the B phase P2 input end, the C phase P2 input end and the zero sequence P2 input end of the current mutual inductor body by leads;
the input end of a second change-over switch K2 (a change-over switch with 4 switches, and a neutral gear contact point is arranged at 5 switches) is respectively connected with the output end of S1 and the output end of M1 of the mutual inductor comprehensive tester by 2 leads, and the output end of A phase S1 (a first output end and a first single switch) of the second change-over switch K2 is connected with the input end of a fourth change-over switch K4 by leads; a first output end of a fourth change-over switch K4 (which is a change-over switch with 3-switch and is provided with a neutral gear contact when the switch with 4-switch is switched on) is connected with an input end of A phase 1S1 of the terminal block by a lead, a second output end of the fourth change-over switch K4 is connected with an input end of A phase 2S1 of the terminal block by a lead, and a third output end of the fourth change-over switch K4 is connected with an input end of A phase 3S1 of the terminal block by a lead; the output end (second output end, second single switch) of the B-phase S1 of the second change-over switch K2 is connected with the input end of a fifth change-over switch K5 by a lead, the first output end of the fifth change-over switch K5 is connected with the input end of the B-phase 1S1 of the terminal row by a lead, the second output end of the fifth change-over switch K5 is connected with the input end of the B-phase 2S1 of the terminal row by a lead, and the third output end of the fifth change-over switch K5 is connected with the input end of the B-phase 3S1 of the terminal row by a lead; the output end (third output end, third single switch) of the C phase S1 of the second change-over switch K2 is connected with the input end of a sixth change-over switch K6 (a change-over switch with 3-open, a neutral gear contact is arranged when 4-open), the first output end of the sixth change-over switch K6 is connected with the input end of the C phase 1S1 of the terminal row by a wire, the second output end of the sixth change-over switch K6 is connected with the input end of the C phase 2S1 of the terminal row by a wire, and the third output end of the sixth change-over switch K6 is connected with the input end of the C phase 3S1 of the terminal row by a wire; the zero sequence S1 output end (fourth output end, fourth single switch) of the second change-over switch K2 is connected with the input end of the seventh change-over switch K7 by a wire, and the output end of the seventh change-over switch K7 is connected with the zero sequence S1 input end of the terminal block by a wire;
the input end of a third change-over switch K3 (4-open change-over switch, provided with a neutral position contact when 5-open) is respectively connected with the S2 output end and the M2 output end of a mutual inductor comprehensive tester (or mutual inductor tester) by 2 leads, the A phase S2 output end (the first output end and the first single switch) of the third change-over switch K3 is connected with the input end of an eighth change-over switch K8 by leads, the first output end (the first single switch) of an eighth change-over switch K8 (6-open change-over switch and provided with a neutral position contact when 7-open) is connected with the A phase 1S2 input end of a terminal row by leads, the second output end of the eighth change-over switch K8 is connected with the A phase 1S3 input end of the terminal row by leads, the third output end of the eighth change-over switch K8 is connected with the A phase 2S2 input end of the terminal row by leads, the fourth output end of the eighth change-over switch K8 is connected with the A phase 2S3 input end of the terminal row by leads, a fifth output of the eighth switch K8 is connected by wire to the a-phase 3S2 input of the terminal block and a sixth output of the eighth switch K8 is connected by wire to the a-phase 3S3 input of the terminal block;
the output of the phase B S2 of the third change-over switch K3 (second output, second single switch) is connected by wire to the input of a ninth change-over switch K9, the first output (first single switch) of the ninth change-over switch K9 (6-open change-over switch, with a neutral contact at 7-open) is connected by wire to the input of the phase B1S 2 of the terminal row, the second output (second single switch) of the ninth change-over switch K9 is connected by wire to the input of the phase B1S 3 of the terminal row, the third output (third single switch) of the ninth change-over switch K9 is connected by wire to the input of the phase B2S 2 of the terminal row, the fourth output (fourth single switch) of the ninth change-over switch K9 is connected by wire to the input of the phase B2S 3 of the terminal row, the fifth output (fifth single switch) of the ninth change-over switch K9 is connected by wire to the input of the phase B3S 2 of the terminal row, a sixth output terminal (sixth single switch) of the ninth changeover switch K9 is connected to the B-phase 3S3 input terminal of the terminal block by a wire;
the output terminal of the C phase S2 of the third change-over switch K3 (third output terminal, third single switch) is connected by wire to the input terminal of a tenth change-over switch K10, the first output terminal (first single switch) of the tenth change-over switch K10 (6-open change-over switch, contact of a neutral position is provided at 7-open) is connected by wire to the input terminal of the C phase 1S2 of the terminal row, the second output terminal (second single switch) of the tenth change-over switch K10 is connected by wire to the input terminal of the C phase 1S3 of the terminal row, the third output terminal (third single switch) of the tenth change-over switch K10 is connected by wire to the input terminal of the C phase 2S2 of the terminal row, the fourth output terminal (fourth single switch) of the tenth change-over switch K10 is connected by wire to the input terminal row C phase 2S3, the fifth output terminal (fifth single switch) of the tenth change-over switch K10 is connected by wire to the input terminal row C phase 3S2, a sixth output terminal (sixth single switch) of the tenth changeover switch K10 is connected by a wire to the C-phase 3S3 input terminal of the terminal block;
the zero sequence S2 output terminal (fourth output terminal, fourth single switch) of the third switch K3 is connected to the input terminal of an eleventh switch K11 (single switch, with a neutral contact at 2-switch) by a wire, and the output terminal of the eleventh switch K11 is connected to the zero sequence S2 input terminal of the terminal block by a wire.
As shown in fig. 3, the first switch K1, the second switch K2 and the third switch K3 are located in a first row, and the first switch K1, the second switch K2 and the third switch K3 are arranged from left to right; the fourth change-over switch K4, the fifth change-over switch K5, the sixth change-over switch K6 and the seventh change-over switch K7 are positioned in the second row, and the fourth change-over switch K4, the fifth change-over switch K5, the sixth change-over switch K6 and the seventh change-over switch K7 are arranged from left to right; the eighth change-over switch K8, the ninth change-over switch K9, the tenth change-over switch K10 and the eleventh change-over switch K11 are located in the third row, and the eighth change-over switch K8, the ninth change-over switch K9, the tenth change-over switch K10 and the eleventh change-over switch K11 are arranged from left to right; the first row, the second row and the third row are arranged in tandem, and the second row is positioned between the first row and the third row.
And neutral position contacts are arranged on the fourth change-over switch K4, the fifth change-over switch K5, the sixth change-over switch K6, the seventh change-over switch K7, the eighth change-over switch K8, the ninth change-over switch K9, the tenth change-over switch K10 and the eleventh change-over switch K11.
The other end (the other side) of the terminal strip is connected with electrical equipment (a switch cabinet and the like).
The test wire box is of an enclosed box in the whole structure, a plurality of change-over switches and relevant loop wiring are installed on the surface of the box, all wires are connected in the box, and the wires need to be sleeved with protective sleeves to penetrate through the box after being punched. The test wire box can be opened (a box door is arranged), so that the test wire box is convenient to maintain in time when the wire is connected or the contact is out of the wire. The test wire box structure is schematically shown in figure 2.
Use of: and switching the plurality of change-over switches to realize free switching of each phase and each winding at the end of the transformer comprehensive tester.
The processing requirements of the test wire box are as follows:
(1) in order to prevent wiring errors in the test process, each conducting wire of the test wire box needs to be marked with striking phase color marks and winding mark marks.
(2) The maximum impact current passed by the lead in the test process is 3A, and the section of the lead can be selected to be 1mm2。
(3) The 8 secondary winding switches from the switch K4 to the switch K11 need at least one pair of neutral contacts in addition to the contacts shown in the figure.
The schematic layout of the diverter switch in the current transformer test line box is shown in fig. 3.
Claims (3)
1. The current transformer test wire box is characterized by comprising a box body, a first change-over switch (K1), a second change-over switch (K2), a third change-over switch (K3), a fourth change-over switch (K4), a fifth change-over switch (K5), a sixth change-over switch (K6), a seventh change-over switch (K7), an eighth change-over switch (K8), a ninth change-over switch (K9), a tenth change-over switch (K10), an eleventh change-over switch (K11) and a wire; a first change-over switch (K1), a second change-over switch (K2), a third change-over switch (K3), a fourth change-over switch (K4), a fifth change-over switch (K5), a sixth change-over switch (K6), a seventh change-over switch (K7), an eighth change-over switch (K8), a ninth change-over switch (K9), a tenth change-over switch (K10) and an eleventh change-over switch (K11) are respectively and fixedly arranged on a panel of the box body;
the input end of a first change-over switch (K1) is connected with the output end of a transformer comprehensive tester (P1) by a lead, the first output end of the first change-over switch (K1) is connected with the input end of the A-phase P1 of the current transformer body, the second output end of the first change-over switch (K1) is connected with the input end of the B-phase P1 of the current transformer body, the third output end of the first change-over switch (K1) is connected with the input end of the C-phase P1 of the current transformer body, and the fourth output end of the first change-over switch (K1) is connected with the input end of the zero-sequence P1 of the current transformer body;
the P2 output end of the transformer comprehensive tester is respectively connected with the A-phase P2 input end, the B-phase P2 input end, the C-phase P2 input end and the zero-sequence P2 input end of the current transformer body through wires;
the input end of a second change-over switch (K2) is respectively connected with the S1 output end and the M1 output end of the mutual inductor comprehensive tester through 2 leads, and the A-phase S1 output end of the second change-over switch (K2) is connected with the input end of a fourth change-over switch (K4) through leads; a first output terminal of the fourth changeover switch (K4) is connected by a wire to the a-phase 1S1 input terminal of the terminal block, a second output terminal of the fourth changeover switch (K4) is connected by a wire to the a-phase 2S1 input terminal of the terminal block, and a third output terminal of the fourth changeover switch (K4) is connected by a wire to the a-phase 3S1 input terminal of the terminal block; the output end of the B phase S1 of the second change-over switch (K2) is connected with the input end of a fifth change-over switch (K5) by a lead, the first output end of the fifth change-over switch (K5) is connected with the input end of the B phase 1S1 of the terminal row by a lead, the second output end of the fifth change-over switch (K5) is connected with the input end of the B phase 2S1 of the terminal row by a lead, and the third output end of the fifth change-over switch (K5) is connected with the input end of the B phase 3S1 of the terminal row by a lead; the output end of the C phase S1 of the second change-over switch (K2) is connected with the input end of a sixth change-over switch (K6) by a lead, the first output end of the sixth change-over switch (K6) is connected with the input end of the C phase 1S1 of the terminal row by a lead, the second output end of the sixth change-over switch (K6) is connected with the input end of the C phase 2S1 of the terminal row by a lead, and the third output end of the sixth change-over switch (K6) is connected with the input end of the C phase 3S1 of the terminal row by a lead; the output end of the zero sequence S1 of the second change-over switch (K2) is connected with the input end of a seventh change-over switch (K7) by a lead, and the output end of the seventh change-over switch (K7) is connected with the input end of the zero sequence S1 of the terminal block by a lead;
the input end of the third change-over switch (K3) is respectively connected with the S2 output end of the mutual inductor comprehensive tester by 2 leads, the M2 output terminal is connected, the a-phase S2 output terminal of the third change-over switch (K3) is connected by a wire to the input terminal of the eighth change-over switch (K8), the first output terminal of the eighth change-over switch (K8) is connected by a wire to the a-phase 1S2 input terminal of the terminal row, the second output terminal of the eighth change-over switch (K8) is connected by a wire to the a-phase 1S3 input terminal of the terminal row, the third output terminal of the eighth change-over switch (K8) is connected by a wire to the a-phase 2S2 input terminal row, the fourth output terminal of the eighth change-over switch (K8) is connected by a wire to the a-phase 2S3 input terminal row, the fifth output terminal of the eighth change-over switch (K8) is connected by a wire to the a-phase 3S2 input terminal row, the sixth output terminal of the eighth change-over switch (K8) is connected by a wire to the a-phase 3S3 input terminal;
the output end of the B phase S2 of the third change-over switch (K3) is connected by a wire to the input end of a ninth change-over switch (K9), the first output end of the ninth change-over switch (K9) is connected by a wire to the input end of B phase 1S2 of the terminal row, the second output end of the ninth change-over switch (K9) is connected by a wire to the input end of B phase 1S3 of the terminal row, the third output end of the ninth change-over switch (K9) is connected by a wire to the input end of B phase 2S 8657 of the terminal row, the fourth output end of the ninth change-over switch (K9) is connected by a wire to the input end of B phase 2S3 of the terminal row, the fifth output end of the ninth change-over switch (K9) is connected by a wire to the input end of B phase 3S2 of the terminal row, and the sixth output end of the ninth change-over switch (K9) is connected by a wire to;
the C-phase S2 output of the third change-over switch (K3) is connected by a wire to the input of a tenth change-over switch (K10), the first output of the tenth change-over switch (K10) is connected by a wire to the C-phase 1S2 input of the terminal row, the second output of the tenth change-over switch (K10) is connected by a wire to the C-phase 1S3 input of the terminal row, the third output of the tenth change-over switch (K10) is connected by a wire to the C-phase 2S2 input of the terminal row, the fourth output of the tenth change-over switch (K10) is connected by a wire to the C-phase 2S3 input of the terminal row, the fifth output of the tenth change-over switch (K10) is connected by a wire to the C-phase 3S2 input of the terminal row, the sixth output of the tenth change-over switch (K10) is connected by a wire to the C-phase 3S3 input of the terminal row;
the output end of the zero sequence S2 of the third change-over switch (K3) is connected with the input end of the eleventh change-over switch (K11) by a lead, and the output end of the eleventh change-over switch (K11) is connected with the input end of the zero sequence S2 of the terminal block by a lead.
2. The current transformer test line box of claim 1, wherein: the first change-over switch (K1), the second change-over switch (K2) and the third change-over switch (K3) are positioned in a first row, and the first change-over switch (K1), the second change-over switch (K2) and the third change-over switch (K3) are arranged from left to right; the fourth change-over switch (K4), the fifth change-over switch (K5), the sixth change-over switch (K6) and the seventh change-over switch (K7) are positioned in the second row, and the fourth change-over switch (K4), the fifth change-over switch (K5), the sixth change-over switch (K6) and the seventh change-over switch (K7) are arranged from left to right; the eighth change-over switch (K8), the ninth change-over switch (K9), the tenth change-over switch (K10) and the eleventh change-over switch (K11) are positioned in the third row, and the eighth change-over switch (K8), the ninth change-over switch (K9), the tenth change-over switch (K10) and the eleventh change-over switch (K11) are arranged from left to right; the first row, the second row and the third row are arranged in tandem, and the second row is positioned between the first row and the third row.
3. The current transformer test wire box according to claim 1, wherein neutral contacts are arranged on the fourth change-over switch (K4), the fifth change-over switch (K5), the sixth change-over switch (K6), the seventh change-over switch (K7), the eighth change-over switch (K8), the ninth change-over switch (K9), the tenth change-over switch (K10) and the eleventh change-over switch (K11).
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| CN202011224905.9A CN112327016A (en) | 2020-11-05 | 2020-11-05 | Current transformer test wire box |
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| CN202011224905.9A CN112327016A (en) | 2020-11-05 | 2020-11-05 | Current transformer test wire box |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387657A (en) * | 2008-07-09 | 2009-03-18 | 山西省电力公司电力科学研究院 | Standard current transformer integration apparatus for on-site detection |
| CN103278790A (en) * | 2012-11-29 | 2013-09-04 | 杭州凯达电力建设有限公司 | Fast testing instrument of variable ratio and polarity of current transformer and testing method thereof |
| CN204009039U (en) * | 2014-07-14 | 2014-12-10 | 国家电网公司 | A kind of current transformer error curve auxiliary testing system |
| CN107192975A (en) * | 2017-06-06 | 2017-09-22 | 国家电网公司 | A kind of test device of transformer |
| CN108414960A (en) * | 2018-04-13 | 2018-08-17 | 南京丹迪克电力仪表有限公司 | A kind of multichannel directly measures formula mutual-inductor tester and method of calibration |
| CN208044053U (en) * | 2018-03-02 | 2018-11-02 | 宁夏送变电工程有限公司 | Portable sound control mutual inductor experimental rig |
| CN111398869A (en) * | 2020-03-31 | 2020-07-10 | 贵州电网有限责任公司 | Mutual inductor handover test device and test method thereof |
-
2020
- 2020-11-05 CN CN202011224905.9A patent/CN112327016A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387657A (en) * | 2008-07-09 | 2009-03-18 | 山西省电力公司电力科学研究院 | Standard current transformer integration apparatus for on-site detection |
| CN103278790A (en) * | 2012-11-29 | 2013-09-04 | 杭州凯达电力建设有限公司 | Fast testing instrument of variable ratio and polarity of current transformer and testing method thereof |
| CN204009039U (en) * | 2014-07-14 | 2014-12-10 | 国家电网公司 | A kind of current transformer error curve auxiliary testing system |
| CN107192975A (en) * | 2017-06-06 | 2017-09-22 | 国家电网公司 | A kind of test device of transformer |
| CN208044053U (en) * | 2018-03-02 | 2018-11-02 | 宁夏送变电工程有限公司 | Portable sound control mutual inductor experimental rig |
| CN108414960A (en) * | 2018-04-13 | 2018-08-17 | 南京丹迪克电力仪表有限公司 | A kind of multichannel directly measures formula mutual-inductor tester and method of calibration |
| CN111398869A (en) * | 2020-03-31 | 2020-07-10 | 贵州电网有限责任公司 | Mutual inductor handover test device and test method thereof |
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