CN113917372A - Method and device for checking cross-connection system in non-unpacking and charged mode - Google Patents
Method and device for checking cross-connection system in non-unpacking and charged mode Download PDFInfo
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- CN113917372A CN113917372A CN202111210825.2A CN202111210825A CN113917372A CN 113917372 A CN113917372 A CN 113917372A CN 202111210825 A CN202111210825 A CN 202111210825A CN 113917372 A CN113917372 A CN 113917372A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
Abstract
A method and a device for checking a cross-connection system with a non-unpacking charged core comprise the following steps: step 1, establishing a standard test feature table of a cross interconnection box, comprising the following steps: cross-interconnect format and its standard test features; step 2, applying a signal with a set frequency to a set cross interconnection box under the condition that the box is not opened and electrified, detecting the minimum phase of the amplitude of the coupling signal in a corresponding grounding box and recording the minimum phase; step 3, substituting the actual test characteristics in the step 2 into the cross interconnection box test characteristic table in the step 1, judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table or not, if so, obtaining a cross interconnection form, executing the step 4, and if not, executing the operation of opening the box and eliminating the defect; step 4, judging whether a complete cross interconnection section is finished or not, and if so, checking to pass; if not, opening any cross interconnection box and adjusting the transposition sequence. The invention simplifies the operation and maintenance procedures, reduces the time consumption and improves the operation safety.
Description
Technical Field
The invention belongs to the technical field of high-voltage power cables, and particularly relates to a method for checking a cross interconnection system by a non-unpacking electrified core.
Background
In the prior art, a high-voltage cable grounding system includes a grounding box, a cross-connection box, a sheath protector, a grounding wire, a cross-connection wire, and the like. The cross interconnection box is suitable for cross interconnection of metal shielding layers of single-core cross-linked cables with high voltage (35kV, 66kV, 110kV and 220kV), can limit the rise of overvoltage on two sides of a sheath and an insulating joint, limit the induction voltage of the metal sheath, and reduce and eliminate annular current on the sheath. Cross-connect wiring errors can cause the grounding system to fail, create a floating potential, or cause the metal sheath to induce excessive current, which can lead to cable failure in the severe cases. After the grounding system is damaged, the middle two sections of the cross-interconnected three-section cable are completely suspended due to the fact that the cross-interconnected wire is stolen, and the suspension voltage of the suspended section cable can reach 4-6 kV and even higher.
Prior art document 1(CN108680816B) discloses a method for checking the live line of a high-voltage cable cross-connection grounding system, which mainly comprises the following steps: 1) checking the wiring modes of two cross interconnection boxes in one cross interconnection section, and directly entering the next step if the wiring modes of the two cross interconnection boxes are consistent; otherwise, the wiring mode is rectified and then the next step is carried out; 2) respectively applying a signal with a specific frequency to each connecting plate of the cross-connection plates in the first cross-connection box, then receiving the signal in the adjacent grounding box, and recording the phase line with the highest received signal strength when the signal is applied every time; 3) listing theoretical values of signals when the correct cross transposition is carried out under the wiring mode according to the wiring mode of the first cross interconnection box; 4) matching the recorded result of the step 2) with the theoretical value obtained in the step 3), and if the matching is unsuccessful, modifying the coaxial cable connection mode; if the recorded result of the step 2) is just successfully matched with the theoretical value in the step 3), repeating the steps 2) to 4) to continuously test the second cross-connection box; 5) and comparing the test results of the first cross interconnection box and the second cross interconnection box, if the directions of the inner core and the outer core of the coaxial cable in the two cross interconnection boxes are not consistent, the wiring mode of the cross interconnection boxes is wrong, and if the directions of the inner core and the outer core of the coaxial cable in the two cross interconnection boxes are consistent, the wiring mode of the cross interconnection boxes is correct, and the test is finished. The prior art document 1 has the disadvantages that in the step 1, whether the wiring modes of the two cross interconnection boxes are consistent or not is checked, and the cross interconnection boxes need to be opened; on the basis of the above, step 2, when applying the specific frequency signal, it is also necessary to establish the basis of opening the cross-connection box. If the wiring is correct as a result of the checking after the step of checking the complete cross-connection grounding system with electricity is completed, the time consumption of operation and maintenance is increased by opening and closing the cross-connection box, and meanwhile, higher requirements are provided for safety measures due to the fact that the cross-connection grounding system is operated with electricity.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a method for checking a cross interconnection system by non-box-opening live line, which aims to judge whether the connection wires in 2# and 3# boxes are in a cross interconnection form or not and whether the cross interconnection matching between the 2# and 3# boxes completes a correct cross interconnection section or not under the condition of not opening the cross interconnection box, and open the cross interconnection box to adjust the transposition sequence only when the cross interconnection is dislocated.
The invention adopts the following technical scheme. A first aspect of the invention provides a method for checking a cross-connect system with a non-unpacked live core, comprising the steps of:
Preferably, step 1 specifically comprises:
step 1.1, enumerating all cross interconnection forms of a 2# cross interconnection box and a 3# cross interconnection box, and numbering each cross interconnection form;
step 1.2, compiling standard test characteristics aiming at each cross interconnection form in the step 1.1, and forming a cross interconnection box standard test characteristic table by expected test results of each cross interconnection form of the 2# cross interconnection box and the 3# cross interconnection box.
Preferably, step 1.1 specifically comprises:
enumerating all cross-connect forms of the 3# cross-connect box, numbering each cross-connect form, including:
numbering 01, connecting an inner core of a coaxial cable with a No. 4 grounding box, connecting an outer core with a No. 2 cross interconnection box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the No. 3 cross interconnection box;
numbering 02, connecting an inner core of a coaxial cable with a No. 2 cross interconnection box, connecting an outer core with a No. 4 grounding box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the No. 3 cross interconnection box;
numbering 03, connecting an inner core of the coaxial cable with a No. 4 grounding box, connecting an outer core with a No. 2 cross interconnection box, connecting A phase and C phase, connecting B phase and a phase and connecting C phase and B phase of the No. 3 cross interconnection box;
the number is 04, the inner core of the coaxial cable is connected with a No. 2 cross interconnection box, the outer core is connected with a No. 4 grounding box, the A phase of the No. 3 cross interconnection box is connected with the C phase, the B phase is connected with the a phase, and the C phase is connected with the B phase;
enumerating all cross-connect forms of # 2 cross-connect box, numbering each cross-connect form, including:
numbering 05, connecting an inner core of the coaxial cable with a 3# cross interconnection box, connecting an outer core with a 1# grounding box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the 2# cross interconnection box;
numbering 06, connecting an inner core of the coaxial cable with a # 1 grounding box, connecting an outer core with a # 3 cross interconnection box, connecting phase A and phase B, connecting phase B and phase C and connecting phase C and phase a of the # 2 cross interconnection box;
numbering 07, connecting an inner core of the coaxial cable with a 3# cross interconnection box, connecting an outer core with a 1# grounding box, connecting A phase and C phase, B phase and B phase of the 2# cross interconnection box;
and the number 08 is that the inner core of the coaxial cable is connected with a No. 1 grounding box, the outer core is connected with a No. 3 cross interconnection box, the A phase of the No. 2 cross interconnection box is connected with C, the B phase is connected with a, and the C phase is connected with B.
Preferably, the cross-connect box standard test profile in step 1.2 is represented in the following table,
TABLE 13 coupled signal amplitude minimum phase detected at 4# box when signal is applied
TABLE 22 # BOX-ADDED SIGNAL-1 # BOX-DETECTED CONNECTED SIGNAL AMPLITUDE MINIMUM PHASE
Preferably, step 2 specifically comprises:
under the condition of not opening the box and charging, applying a signal with set frequency to a first coaxial cable at the lower end part of a 2# cross interconnection box, detecting and recording the minimum amplitude phase of a coupling signal in a 1# grounding box, applying a signal with set frequency to a second coaxial cable at the lower end part of the 2# cross interconnection box, detecting and recording the minimum amplitude phase of the coupling signal in the 1# grounding box, applying a signal with set frequency to a third coaxial cable at the lower end part of the 2# cross interconnection box, detecting and recording the minimum amplitude phase of the coupling signal in the 1# grounding box, combining the obtained three minimum amplitude phases of the coupling signals into the actual test characteristic of the 2# cross interconnection box,
applying a signal with set frequency to a first coaxial cable at the lower end part of a 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of a coupling signal in a 4# grounding box, applying a signal with set frequency to a second coaxial cable at the lower end part of the 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of the coupling signal in the 4# grounding box, applying a signal with set frequency to a third coaxial cable at the lower end part of the 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of the coupling signal in the 4# grounding box, and combining the obtained three phase with the minimum amplitude of the coupling signal into the actual test characteristic of the 3# cross interconnection box.
Preferably, in step 2, the signal with the set frequency is an 8kHz signal.
Preferably, step 3 specifically comprises:
and (3) substituting the actual test characteristics of the 2# cross interconnection box and the actual test characteristics of the 3# cross interconnection box into the cross interconnection box test characteristic table in the step (1), judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table or not, if so, obtaining the cross interconnection form of the 2# cross interconnection box and the cross interconnection form of the 3# cross interconnection box, executing the step (4), and if not, executing the box opening and defect eliminating operation.
Preferably, if there is no match in step 3, the performing of the unpacking and deleting operation includes: if the standard test characteristics matched with the actual test characteristics of the 2# cross interconnection box do not exist in the cross interconnection box test characteristic table, performing box opening and defect eliminating operation on the 2# cross interconnection box;
and if the standard test characteristics matched with the actual test characteristics of the 3# cross interconnection box do not exist in the cross interconnection box test characteristic table, performing box opening and defect eliminating operation on the 3# cross interconnection box.
Preferably, step 4 specifically includes:
combining the cross interconnection form of the 2# cross interconnection box and the 3# cross interconnection box to judge whether the 2# cross interconnection box and the 3# cross interconnection box complete a complete cross interconnection section, if so, checking to pass; if not, opening any cross interconnection box and adjusting the transposition sequence.
The second aspect of the invention provides a device for checking a cross-connection system by using a non-unpacking charged core, which implements the method for checking the cross-connection system by using the non-unpacking charged core, and comprises the following steps: signal generating device, signal measuring device, memory device, input device and display device, characterized in that,
the signal generating equipment is used for generating a test signal with a set frequency and a set amplitude;
a signal measuring device for measuring a response signal at the time of test;
the storage equipment is used for storing a standard test characteristic table and test data of the cross interconnection box;
the input equipment is used for inputting a standard test characteristic table and test data of the fork interconnection box;
and the display equipment is used for displaying the test result and the operation prompt.
Compared with the prior art, the method has the advantages that under the condition that the cross interconnection box is not opened, whether the wiring in the 2# box and the 3# box is in a cross interconnection form or not and whether the cross interconnection matching between the 2# box and the 3# box completes a correct cross interconnection section or not are judged in an electrified mode, and the cross interconnection box is opened to adjust the transposition sequence only when the cross interconnection is wrong. The operation and maintenance procedures are simplified, the time consumption is reduced, and the operation safety is improved.
Drawings
FIG. 1 is a schematic diagram of a cross-connect system to which the method of the present invention for non-boxed live core cross-connect is directed;
FIG. 2 is a schematic diagram of a 3# cross connect box;
FIG. 3 is a schematic diagram of signals coupled at a first coaxial cable of the 3# cross connect box;
FIG. 4 is a schematic illustration of signals coupled at a second coaxial cable of the 3# cross connect box;
fig. 5 is a schematic diagram of signals coupled at the third coaxial cable of the 3# cross connect box.
FIG. 6 is a flow chart of a method of non-boxed live core cross connect system of the present invention.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in fig. 6, embodiment 1 of the present invention provides a method for a non-unpacked live core cross-connect system for a cable grounding system, as shown in fig. 1, comprising: the 1# grounding box, the 2# cross-connection box, the 3# cross-connection box and the 4# grounding box are adjacent in sequence. In a preferred but non-limiting embodiment, the 1# ground tank and the 4# ground tank are direct ground tanks. The method is used for judging whether the wiring in the 2# cross interconnection box and the 3# cross interconnection box is in a cross interconnection form or not in an electrified mode and whether the cross interconnection matching between the 2# cross interconnection box and the 3# cross interconnection box completes a correct cross interconnection section or not under the condition that the 2# cross interconnection box and the 3# cross interconnection box are not opened.
The method for checking the cross-connection system by the non-unpacking electrified core comprises the following steps:
step 1.1, enumerating all cross-connect forms of the 3# cross-connect box, numbering each cross-connect form, as shown in fig. 2, comprising:
numbering 01, connecting an inner core of a coaxial cable with a No. 4 grounding box, connecting an outer core with a No. 2 cross interconnection box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the No. 3 cross interconnection box;
numbering 02, connecting an inner core of a coaxial cable with a No. 2 cross interconnection box, connecting an outer core with a No. 4 grounding box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the No. 3 cross interconnection box;
numbering 03, connecting an inner core of the coaxial cable with a No. 4 grounding box, connecting an outer core with a No. 2 cross interconnection box, connecting A phase and C phase, connecting B phase and a phase and connecting C phase and B phase of the No. 3 cross interconnection box;
the number is 04, the inner core of the coaxial cable is connected with a No. 2 cross interconnection box, the outer core is connected with a No. 4 grounding box, the A phase of the No. 3 cross interconnection box is connected with the C phase, the B phase is connected with the a phase, and the C phase is connected with the B phase;
enumerating all cross-connect forms of # 2 cross-connect box, numbering each cross-connect form, including:
numbering 05, connecting an inner core of the coaxial cable with a 3# cross interconnection box, connecting an outer core with a 1# grounding box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the 2# cross interconnection box;
numbering 06, connecting an inner core of the coaxial cable with a # 1 grounding box, connecting an outer core with a # 3 cross interconnection box, connecting phase A and phase B, connecting phase B and phase C and connecting phase C and phase a of the # 2 cross interconnection box;
numbering 07, connecting an inner core of the coaxial cable with a 3# cross interconnection box, connecting an outer core with a 1# grounding box, connecting A phase and C phase, B phase and B phase of the 2# cross interconnection box;
numbering 08, connecting an inner core of the coaxial cable with a # 1 grounding box, connecting an outer core with a # 3 cross interconnection box, connecting phase A and phase C of the # 2 cross interconnection box, connecting phase B and phase a, and connecting phase C and phase B;
step 1.2, compiling standard test characteristics aiming at each cross interconnection form of the step 1.1, wherein the standard test characteristics are formed by expected test results of each cross interconnection form of a 2# cross interconnection box and a 3# cross interconnection box,
when the 8kHz signal is coupled to the position of fig. 3, the 8kHz signal is collected at the 4# box, and the connection state of the inner core and the outer core of the scene number 01 is known as follows: two phases A, C at the 4# box will detect a larger oppositely directed coupled signal, while the coupled signal at phase B will have the smallest amplitude.
When 8kHz signals are coupled at the position of fig. 4, the signal 8kHz signals are collected at the 4# box, and the connection state of the inner core and the outer core of scenario number 01 shows that: two phases A, B at the 4# box will detect a larger oppositely directed coupled signal, while the magnitude of the coupled signal at phase C is the smallest.
When 8kHz signals are coupled at the position of fig. 5, the signal 8kHz signals are collected at the 4# box, and the connection state of the inner core and the outer core of scenario number 01 shows that: two phases B, C at the 4# box will detect a larger oppositely directed coupled signal, while the amplitude of the coupled signal at phase a is the smallest.
And so on, specifically as shown in the following tables 1 and 2,
TABLE 13 coupled signal amplitude minimum phase detected at 4# box when signal is applied
TABLE 22 # BOX-ADDED SIGNAL-1 # BOX-DETECTED CONNECTED SIGNAL AMPLITUDE MINIMUM PHASE
applying a signal with a set frequency to a first coaxial cable at the lower end part of a 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of a coupling signal in a 4# grounding box, applying a signal with a set frequency to a second coaxial cable at the lower end part of the 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of the coupling signal in the 4# grounding box, applying a signal with a set frequency to a third coaxial cable at the lower end part of the 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of the coupling signal in the 4# grounding box, combining the obtained three phase with the minimum amplitude of the coupling signal into an actual test characteristic of the 3# cross interconnection box,
and 3, substituting the actual test characteristics of the 2# cross interconnection box and the actual test characteristics of the 3# cross interconnection box into the cross interconnection box test characteristic table in the step 1, judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table or not, if so, obtaining the cross interconnection form of the 2# cross interconnection box and the cross interconnection form of the 3# cross interconnection box, executing the step 4, and if not, executing the box opening and defect eliminating operation. The method specifically comprises the following steps:
and if the standard test characteristics matched with the actual test characteristics of the 2# cross interconnection box do not exist in the cross interconnection box test characteristic table, performing box opening and defect eliminating operation on the 2# cross interconnection box. Similarly, if the standard test characteristics matched with the actual test characteristics of the 3# cross interconnection box do not exist in the cross interconnection box test characteristic table, the 3# cross interconnection box is subjected to unpacking and defect eliminating operation.
It should be noted that, although the above test method, the test result of scenario number 01 is the same as that of scenario number 04, the test result of scenario number 02 is the same as that of scenario number 03, the test result of scenario number 05 is the same as that of scenario number 08, and the test result of scenario number 06 is the same as that of scenario number 07, the above non-unpacking test method cannot distinguish between scenario number 01 and scenario number 04, scenario number 02 and scenario number 03, scenario number 05 and scenario number 08, and scenario number 06 and scenario number 07, the test method can still correctly judge the correctness of the whole cross-connection segment,
the method specifically comprises the following steps:
1) when the 3# cross interconnection box couples signals and the 4# grounding box detects the sequential BCA of the phase with the minimum signal amplitude, corresponding to the scene 1 and the scene 4; when the 2# cross interconnection box is coupled with signals and the 1# grounding box detects the sequence CAB of the minimum signal amplitude phase, corresponding to a scene 5 and a scene 8; in this case, two by two combinations, 4 cases may occur, but the 4 cases complete a complete cross-connect segment.
2) When the 3# cross interconnection box couples signals and the 4# grounding box detects the sequence CAB of the minimum signal amplitude phase, corresponding to the scene 2 and the scene 3; when the 2# cross-connection box couples signals and the 1# ground box detects the sequential BCA of the phase with the minimum signal amplitude, the scenes 6 and 7 are corresponding; in this case, two by two combinations, 4 cases may occur, but the 4 cases complete a complete cross-connect segment.
3) When the 3# cross interconnection box couples signals and the 4# grounding box detects the sequential BCA of the phase with the minimum signal amplitude, corresponding to the scene 1 and the scene 4; when the 2# cross-connection box couples signals and the 1# ground box detects the sequential BCA of the phase with the minimum signal amplitude, the scenes 6 and 7 are corresponding; at this time, 4 situations may occur when two are combined, but a cross interconnection transposition error occurs in all 4 situations, and any cross interconnection box needs to be opened and the transposition sequence needs to be adjusted.
4) When the 3# cross interconnection box couples signals and the 4# grounding box detects the sequence CAB of the minimum signal amplitude phase, corresponding to the scene 2 and the scene 3; when the 2# cross interconnection box is coupled with signals and the 1# grounding box detects the sequence CAB of the minimum signal amplitude phase, corresponding to a scene 5 and a scene 8; at this time, 4 situations may occur when two are combined, but a cross interconnection transposition error occurs in all 4 situations, and any cross interconnection box needs to be opened and the transposition sequence needs to be adjusted.
The embodiment 2 of the invention provides a device for checking a cross-connection system by a non-box-opening charged core, which is used for operating the method for checking the cross-connection system by the non-box-opening charged core in the embodiment 1, and comprises the following steps: signal generating device, signal measuring device, memory device, input device and display device, characterized in that,
the signal generating equipment is used for generating a test signal with a set frequency and a set amplitude;
a signal measuring device for measuring a response signal at the time of test;
the storage equipment is used for storing a standard test characteristic table and test data of the cross interconnection box;
the input equipment is used for inputting a standard test characteristic table and test data of the fork interconnection box;
and the display equipment is used for displaying the test result and the operation prompt.
Compared with the prior art, the method has the advantages that under the condition that the cross interconnection box is not opened, whether the wiring in the 2# box and the 3# box is in a cross interconnection form or not and whether the cross interconnection matching between the 2# box and the 3# box completes a correct cross interconnection section or not are judged in an electrified mode, and the cross interconnection box is opened to adjust the transposition sequence only when the cross interconnection is wrong. The operation and maintenance procedures are simplified, the time consumption is reduced, and the operation safety is improved.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. A method for non-unpacking, live-core cross-connect systems, comprising the steps of:
step 1, establishing a standard test feature table of a cross interconnection box, comprising the following steps: cross-interconnect format and its standard test features;
step 2, applying a signal with a set frequency to a set cross interconnection box under the condition that the box is not opened and electrified, detecting the minimum phase of the amplitude of the coupling signal in a corresponding grounding box and recording the minimum phase;
step 3, substituting the actual test characteristics in the step 2 into the cross interconnection box test characteristic table in the step 1, judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table or not, if so, obtaining a cross interconnection form, executing the step 4, and if not, executing the operation of opening the box and eliminating the defect;
step 4, judging whether a complete cross interconnection section is finished or not, and if so, checking to pass; if not, opening any cross interconnection box and adjusting the transposition sequence.
2. The method of claim 1 for a non-unpacking charged core cross-connect system, wherein:
the step 1 specifically comprises the following steps:
step 1.1, enumerating all cross interconnection forms of a 2# cross interconnection box and a 3# cross interconnection box, and numbering each cross interconnection form;
step 1.2, compiling standard test characteristics aiming at each cross interconnection form in the step 1.1, and forming a cross interconnection box standard test characteristic table by expected test results of each cross interconnection form of the 2# cross interconnection box and the 3# cross interconnection box.
3. The method of claim 2 for a non-unpacking charged core cross-connect system, wherein:
step 1.1 specifically comprises:
enumerating all cross-connect forms of the 3# cross-connect box, numbering each cross-connect form, including:
numbering 01, connecting an inner core of a coaxial cable with a No. 4 grounding box, connecting an outer core with a No. 2 cross interconnection box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the No. 3 cross interconnection box;
numbering 02, connecting an inner core of a coaxial cable with a No. 2 cross interconnection box, connecting an outer core with a No. 4 grounding box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the No. 3 cross interconnection box;
numbering 03, connecting an inner core of the coaxial cable with a No. 4 grounding box, connecting an outer core with a No. 2 cross interconnection box, connecting A phase and C phase, connecting B phase and a phase and connecting C phase and B phase of the No. 3 cross interconnection box;
the number is 04, the inner core of the coaxial cable is connected with a No. 2 cross interconnection box, the outer core is connected with a No. 4 grounding box, the A phase of the No. 3 cross interconnection box is connected with the C phase, the B phase is connected with the a phase, and the C phase is connected with the B phase;
enumerating all cross-connect forms of # 2 cross-connect box, numbering each cross-connect form, including:
numbering 05, connecting an inner core of the coaxial cable with a 3# cross interconnection box, connecting an outer core with a 1# grounding box, connecting A phase and B phase, connecting B phase and C phase and connecting C phase and a phase of the 2# cross interconnection box;
numbering 06, connecting an inner core of the coaxial cable with a # 1 grounding box, connecting an outer core with a # 3 cross interconnection box, connecting phase A and phase B, connecting phase B and phase C and connecting phase C and phase a of the # 2 cross interconnection box;
numbering 07, connecting an inner core of the coaxial cable with a 3# cross interconnection box, connecting an outer core with a 1# grounding box, connecting A phase and C phase, B phase and B phase of the 2# cross interconnection box;
and the number 08 is that the inner core of the coaxial cable is connected with a No. 1 grounding box, the outer core is connected with a No. 3 cross interconnection box, the A phase of the No. 2 cross interconnection box is connected with C, the B phase is connected with a, and the C phase is connected with B.
4. A method of non-unpacking, live audit and cross-connect systems as set forth in claim 3 wherein:
the cross-connect box standard test profile in step 1.2 is presented in the following table,
5. a method of non-boxed live checkup of a cross-connect system according to any of claims 2 to 4, in which:
the step 2 specifically comprises the following steps:
under the condition of not opening the box and charging, applying a signal with set frequency to a first coaxial cable at the lower end part of a 2# cross interconnection box, detecting and recording the minimum amplitude phase of a coupling signal in a 1# grounding box, applying a signal with set frequency to a second coaxial cable at the lower end part of the 2# cross interconnection box, detecting and recording the minimum amplitude phase of the coupling signal in the 1# grounding box, applying a signal with set frequency to a third coaxial cable at the lower end part of the 2# cross interconnection box, detecting and recording the minimum amplitude phase of the coupling signal in the 1# grounding box, combining the obtained three minimum amplitude phases of the coupling signals into the actual test characteristic of the 2# cross interconnection box,
applying a signal with set frequency to a first coaxial cable at the lower end part of a 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of a coupling signal in a 4# grounding box, applying a signal with set frequency to a second coaxial cable at the lower end part of the 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of the coupling signal in the 4# grounding box, applying a signal with set frequency to a third coaxial cable at the lower end part of the 3# cross interconnection box, detecting and recording the phase with the minimum amplitude of the coupling signal in the 4# grounding box, and combining the obtained three phase with the minimum amplitude of the coupling signal into the actual test characteristic of the 3# cross interconnection box.
6. The method of claim 5 for a non-unpacking charged core cross-connect system, wherein:
in step 2, the signal with the set frequency is an 8kHz signal.
7. A method of non-boxed live checkup of a cross-connect system according to any of claims 2 to 4, in which:
the step 3 specifically comprises the following steps:
and (3) substituting the actual test characteristics of the 2# cross interconnection box and the actual test characteristics of the 3# cross interconnection box into the cross interconnection box test characteristic table in the step (1), judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table or not, if so, obtaining the cross interconnection form of the 2# cross interconnection box and the cross interconnection form of the 3# cross interconnection box, executing the step (4), and if not, executing the box opening and defect eliminating operation.
8. The method of claim 7 for a non-unpacking charged core cross-connect system, wherein:
if not matched in the step 3, the operation of opening the box and eliminating the defect comprises the following steps: if the standard test characteristics matched with the actual test characteristics of the 2# cross interconnection box do not exist in the cross interconnection box test characteristic table, performing box opening and defect eliminating operation on the 2# cross interconnection box;
and if the standard test characteristics matched with the actual test characteristics of the 3# cross interconnection box do not exist in the cross interconnection box test characteristic table, performing box opening and defect eliminating operation on the 3# cross interconnection box.
9. A method of non-unpacking charged cores and cross-connect systems according to any one of claims 2 to 8, wherein:
the step 4 specifically comprises the following steps:
combining the cross interconnection form of the 2# cross interconnection box and the 3# cross interconnection box to judge whether the 2# cross interconnection box and the 3# cross interconnection box complete a complete cross interconnection section, if so, checking to pass; if not, opening any cross interconnection box and adjusting the transposition sequence.
10. An apparatus for non-open-box charged core cross-connect system, implementing the method of non-open-box charged core cross-connect system of any one of claims 1 to 9, comprising: signal generating device, signal measuring device, memory device, input device and display device, characterized in that,
the signal generating equipment is used for generating a test signal with a set frequency and a set amplitude;
a signal measuring device for measuring a response signal at the time of test;
the storage equipment is used for storing a standard test characteristic table and test data of the cross interconnection box;
the input equipment is used for inputting a standard test characteristic table and test data of the fork interconnection box;
and the display equipment is used for displaying the test result and the operation prompt.
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