CN103267904A - Phase checking method in process of cable installation - Google Patents
Phase checking method in process of cable installation Download PDFInfo
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- CN103267904A CN103267904A CN2013101513077A CN201310151307A CN103267904A CN 103267904 A CN103267904 A CN 103267904A CN 2013101513077 A CN2013101513077 A CN 2013101513077A CN 201310151307 A CN201310151307 A CN 201310151307A CN 103267904 A CN103267904 A CN 103267904A
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Abstract
The invention relates to a phase checking method in the process of cable installation. The phase checking method in the process of the cable installation comprises the steps that both sides firstly turn on work beginning warning lights on control boards of auxiliary devices, and the warning lights of the both sides are mutually light; the process that an A phase cable begins to be detected right now is confirmed; the fact that grounding is finished is told to workers on a near-end side; the near-end side tells a far-end side that grounding of a tramegger is finished; the far-end side tells the near-end side that operation can be begun; the near-end side firstly screws and twists a pressurizing knob corresponding to phase checking states and then begins to pressurize a cable. When phase is checked, a copper shielding layer of the cable is used as a communication medium of the workers at two ends of the cable, due to the fact that the workers work at the two ends of the cable, whether wireless communication signals exist or not, the cable shielding layer certainly can be connected with the two ends of the cable and used as the communication medium, and therefore the phenomena that errors easily occur due to the fact information is told step-by-step, if one worker does not understand the information or express the information clearly, tells the wrong information, the working errors can be caused, and even dangers are brought to the workers are avoided.
Description
Technical field
The invention belongs to the power construction technical field, check phase sequence, nuclear-phase method when especially a kind of cable is installed when relating to power cable and installing.
Background technology
Electric system is three-phase AC electrical supply system, and a fixing phase differential is arranged between its three-phase when normally moving, and three-phase current has fixing sequencing, and the people is for after providing phase sequence, and being electrically connected of all devices all must be according to this order.The effect of cable line in electric system is that the electrical equipment with certain part two ends in the system couples together, this just requires the phase place of the terminal device that cable line whenever is connected identical, for example the electrical equipment at A phase cable connection two ends also must be the A phase, if A phase cable near-end connects the A phase, what far-end connected is B phase equipment, is setup error.If threephase cable phase sequence setup error, can cause its corresponding low-pressure side phase sequence of when operation energising mistake too, might cause the motor counter-rotating when causing low pressure side joint threephase motor, also can cause when this part equipment and other charging equipments side by side or during cyclization, produce very big electric current, huge electric current can cause electrical equipment to damage, even blast causes personal injury.It is very important checking phase sequence when therefore, cable is installed.
The resistance to earth method is the most traditional nuclear-phase method, and operation steps is: 1, cable near-end personnel prepare to survey A resistance relatively with megger, inform the far-end staff with mobile phone or intercom; 2, the far-end personnel inform that the near-end personnel can begin operation, and personnel are away from cable end with a certain phase cable grounding; 3, the near-end personnel test A resistance relatively with megger: if resistance to earth is 0, determine that then the cable of opposite end ground connection is the A phase, at this moment stop test, and inform that the opposite end has stopped test, the opposite end phase sequence is correct, the far-end personnel make marks A phase cable; If resistance to earth is very big, not the A phase then, and inform that the opposite end has stopped test, opposite end phase sequence mistake that the far-end personnel are earlier this discharge of phase cable, wireline test of gravity treatment again.
Whole wireline test process need cable two ends staff links up at any time, and communication mode is mainly mobile phone or intercom, and the other side informed in staff's language.Yet along with the development of modern city, high building stands in great numbers, and cable machinery mainly all is placed in the basement of skyscraper at present, when airtight basement is installed, does not have wireless communication signals usually, and mobile phone can't use.The a plurality of intercoms of general use are as intermediate link now, and middle a plurality of staff pass on step by step, could realize that the staff at cable two ends communicates by letter mutually.The defective of doing like this is: 1, passing on step by step occurs mistake easily, if intermediate link has a staff to understand unclear or expresses unclearly, error understanding or pass on can cause the mistake in the work, even bring danger can for other staff.2, pass on step by step and reduce work efficiency greatly, lengthen working hours.3, the labor cost of finishing a job can increase, especially long apart from the time because the intercom speech range is limited, more to increase manpower.
Summary of the invention
The objective of the invention is to overcome the weak point of original technology, nuclear-phase method when providing a kind of cable to install, check phase sequence work in the time of can realizing cable installed and play effective help, help staff's efficient communication at cable two ends, confirm the other side's duty with the way of acousto-optic hint mutually.
The technical scheme that technical solution problem of the present invention adopts is:
Nuclear-phase method when a kind of cable is installed, step is:
⑴ both sides earlier begin the work on the console panel of servicing unit warning light and beat brightly, and both sides' warning light is bright mutually;
⑵ both sides' A phase relay indicating light knob of console panel separately open, and by opening A earlier in near-end side, far end party is also opened A after receiving signal.Confirm to begin now setup test A phase cable;
⑶ far end party is screwed nuclear phase state respective knob with a certain phase cable grounding, informs that near-end side's personnel's ground connection finishes;
⑷ near-end side at A phase cable, connects the megger wiring, screws nuclear phase state respective knob, informs that the wiring of far end party megger finishes;
⑸ far end party is withdrawn safe distance to, screws nuclear phase state respective knob, informs that near-end side can begin operation;
⑹ the corresponding pressurization knob of nuclear phase state is screwed earlier in near-end side, begins the cable pressurization is begun to take place following situation:
Situation 1: if resistance to earth is 0, determine that then the cable of far end party ground connection is the A phase, at this moment stop pressurization, screw the correct knob of phase sequence of nuclear phase state, and screw nuclear phase state respective knob, inform that far end party has stopped pressurization; Far end party is discharged cable, and this phase cable is done A phase mark, screws the nuclear phase state phase nuclear phase button that finishes;
Situation 2: if resistance to earth is very big, determine that then the cable of far end party ground connection is not the A phase, at this moment stop pressurization, screw nuclear phase state phase sequence mistake knob, and screw and stop pressurizing button; " far end party is changed a phase cable again to this cable discharge, repeats above-mentioned steps, proceeds A phase cable nuclear phase, up to finding A phase cable.
⑺ repeat above-mentioned steps, carries out B phase cable nuclear phase.
And, panel, machine plate are set on the described servicing unit, panel is provided with power switch, loudspeaker, our console panel, the other side's console panel and nuclear phase state set of knobs, electric wave carrier and power supply are installed on the machine plate, servicing unit adopts plug-in inductive coupler and cable under test socket by high frequency cable, this servicing unit uses the screen layer of cable under test as communication media, utilizes the electric wave carrier load signal to communicate.
And, described nuclear phase state set of knobs comprises eight knobs, is respectively: cable grounding the finish knob, personnel of knob, megger wiring that finish withdraws that safe distance knob, pressurization beginning knob, the correct knob of phase sequence, phase sequence mistake knob, pressurization stop knob, knob is finished in discharge to.
Advantage of the present invention and good effect are:
1, the present invention is when nuclear phase, utilize the copper shield of cable itself as cable two ends staff's telecommunication media, owing to be to work at the cable two ends, no matter have or not wireless communication signals, cable shield can serve as communication media in the stube cable two ends certainly, and avoiding passing on step by step occurs mistake easily, if intermediate link has a staff to understand unclear or represents unclear, mistake is pass on, and can cause the mistake in the work, even can bring danger to the staff.
The problem that intercoms mutually when 2, the invention solves the traditional cable nuclear phase and exist, no matter reach which kind of external condition, can both allow staff's direct communication at cable two ends, do not need intermediate link to pass on, and make cable two ends personnel can both see the instant duty that the opposite end personnel are present, show with sound and light signal, accomplish effective prompting, in order to avoid make mistakes.
Description of drawings
Fig. 1 is the panel construction synoptic diagram of servicing unit of the present invention;
Fig. 2 is principle of work synoptic diagram of the present invention.
Embodiment:
For further understanding content of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows.Need to prove that present embodiment is descriptive, is not determinate, can not limit protection scope of the present invention thus.
At first narrate nuclear phase servicing unit when cable of the present invention is installed, this servicing unit arranges panel 2, machine plate 7, panel is provided with power switch 6, loudspeaker 1, our console panel 3, the other side's console panel 5 and nuclear phase state set of knobs 4, electric wave carrier and power supply are installed on the machine plate, servicing unit adopts plug-in inductive coupler 9 and cable under test 10 sockets by high frequency cable 8, and concrete structure is referring to Fig. 1,2.This servicing unit uses the screen layer of cable under test as communication media, utilize the electric wave carrier load signal to communicate, the upper strata connects a servicing unit that overlaps when checking the cable phase sequence, the staff at cable two ends respectively holds a cover respectively, plays mutually the effect that intercoms, informs the other side's duty.Described nuclear phase state set of knobs comprises eight knobs, is respectively: cable grounding the finish knob, personnel of knob, megger wiring that finish withdraws that safe distance knob, pressurization beginning knob, the correct knob of phase sequence, phase sequence mistake knob, pressurization stop knob, knob is finished in discharge to.
This servicing unit is two that are complementary, and uses for respectively the staff at cable two ends.
The near-end staff is responsible for the distant cable of megger, and the opposite end staff is responsible for cable grounding; The A that indicates on each side's console panel, B, C indicate the three-phase of cable, and three letter belows are corresponding LED light, and respectively corresponding yellow, green, red led.
Nuclear-phase method when a kind of cable is installed, step is:
1, both sides earlier begin the work on the console panel warning light and beat brightly, and both sides' warning light is bright mutually;
2, both sides will be separately the A phase relay indicating light knob of console panel open, by opening A earlier in near-end side, far end party is also opened A after receiving signal.Confirm to begin now setup test A phase cable;
3, far end party is screwed nuclear phase state respective knob with a certain phase cable grounding, informs that near-end side's personnel's ground connection finishes;
4, near-end side at A phase cable, connects the megger wiring, screws nuclear phase state respective knob, informs that the wiring of far end party megger finishes;
5, far end party is withdrawn safe distance to, screws nuclear phase state respective knob, informs that near-end side can begin operation;
6, the corresponding pressurization knob of nuclear phase state is screwed earlier in near-end side, begins the cable pressurization is begun to take place following situation:
Situation 1: if resistance to earth is 0, determine that then the cable of far end party ground connection is the A phase, at this moment stop pressurization, screw the correct knob of phase sequence of nuclear phase state, and screw nuclear phase state respective knob, inform that far end party has stopped pressurization; Far end party is discharged cable, and this phase cable is done A phase mark, screws the nuclear phase state phase nuclear phase button that finishes;
Situation 2: if resistance to earth is very big, determine that then the cable of far end party ground connection is not the A phase, at this moment stop pressurization, screw nuclear phase state phase sequence mistake knob, and screw and stop pressurizing button; " far end party is changed a phase cable again to this cable discharge, repeats above-mentioned steps, proceeds A phase cable nuclear phase, up to finding A phase cable.
Repeat above-mentioned steps, carry out B phase cable nuclear phase.
Do not select that the copper core is because need it to do electric test in the cable, and when making electric test, because the frequency of carrier communication apparatus is selected, do not influence the use of screen layer.
Claims (3)
1. nuclear-phase method when a cable is installed, it is characterized in that: step is:
⑴ both sides earlier begin the work on the console panel of servicing unit warning light and beat brightly, and both sides' warning light is bright mutually;
⑵ both sides' A phase relay indicating light knob of console panel separately open, and by opening A earlier in near-end side, far end party is also opened A after receiving signal, confirm to begin now setup test A phase cable;
⑶ far end party is screwed nuclear phase state respective knob with a certain phase cable grounding, informs that near-end side's personnel's ground connection finishes;
⑷ near-end side at A phase cable, connects the megger wiring, screws nuclear phase state respective knob, informs that the wiring of far end party megger finishes;
⑸ far end party is withdrawn safe distance to, screws nuclear phase state respective knob, informs that near-end side can begin operation;
⑹ the corresponding pressurization knob of nuclear phase state is screwed earlier in near-end side, begins the cable pressurization is begun to take place following situation:
Situation 1: if resistance to earth is 0, determine that then the cable of far end party ground connection is the A phase, at this moment stop pressurization, screw the correct knob of phase sequence of nuclear phase state, and screw nuclear phase state respective knob, inform that far end party has stopped pressurization; Far end party is discharged cable, and this phase cable is done A phase mark, screws the nuclear phase state phase nuclear phase button that finishes;
Situation 2: if resistance to earth is very big, determine that then the cable of far end party ground connection is not the A phase, at this moment stop pressurization, screw nuclear phase state phase sequence mistake knob, and screw and stop pressurizing button; " far end party is changed a phase cable again to this cable discharge, repeats above-mentioned steps, proceeds A phase cable nuclear phase, up to finding A phase cable.
⑺ repeat above-mentioned steps, carries out B phase cable nuclear phase.
2. nuclear-phase method when cable according to claim 1 is installed, it is characterized in that: panel, machine plate are set on the described servicing unit, panel is provided with power switch, loudspeaker, our console panel, the other side's console panel and nuclear phase state set of knobs, electric wave carrier and power supply are installed on the machine plate, servicing unit adopts plug-in inductive coupler and cable under test socket by high frequency cable, this servicing unit uses the screen layer of cable under test as communication media, utilizes the electric wave carrier load signal to communicate.
3. nuclear-phase method when cable according to claim 1 is installed, it is characterized in that: described nuclear phase state set of knobs comprises eight knobs, is respectively: cable grounding the finish knob, personnel of knob, megger wiring that finish withdraws that safe distance knob, pressurization beginning knob, the correct knob of phase sequence, phase sequence mistake knob, pressurization stop knob, knob is finished in discharge to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310151307.7A CN103267904B (en) | 2013-04-27 | 2013-04-27 | Nuclear-phase method when a kind of cable is installed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310151307.7A CN103267904B (en) | 2013-04-27 | 2013-04-27 | Nuclear-phase method when a kind of cable is installed |
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| CN103267904A true CN103267904A (en) | 2013-08-28 |
| CN103267904B CN103267904B (en) | 2015-08-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569629A (en) * | 2015-02-03 | 2015-04-29 | 孙超 | Phase sequence tester of low-voltage cables |
| CN106226608A (en) * | 2016-08-02 | 2016-12-14 | 国家电网公司 | A kind of cable phase sequence determinator |
| CN107831376A (en) * | 2017-12-06 | 2018-03-23 | 国网宁夏电力有限公司宁东供电公司 | Intelligent nuclear phase meter and Intelligent nuclear phase method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08248083A (en) * | 1995-03-13 | 1996-09-27 | Toshiba Corp | Three phase main circuit testing apparatus |
| JP2938053B1 (en) * | 1998-07-30 | 1999-08-23 | 西日本電気システム株式会社 | Cable check device and cable checker |
| CN2916644Y (en) * | 2006-07-13 | 2007-06-27 | 江苏省电力公司苏州供电公司 | Intelligent nuclear phase instrument |
| CN201532437U (en) * | 2009-11-13 | 2010-07-21 | 徐天锡 | Cable number checking and phase checking device |
| CN101937028A (en) * | 2009-06-30 | 2011-01-05 | 武汉思威科技投资有限公司 | Wireless nuclear phase instrument |
-
2013
- 2013-04-27 CN CN201310151307.7A patent/CN103267904B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08248083A (en) * | 1995-03-13 | 1996-09-27 | Toshiba Corp | Three phase main circuit testing apparatus |
| JP2938053B1 (en) * | 1998-07-30 | 1999-08-23 | 西日本電気システム株式会社 | Cable check device and cable checker |
| CN2916644Y (en) * | 2006-07-13 | 2007-06-27 | 江苏省电力公司苏州供电公司 | Intelligent nuclear phase instrument |
| CN101937028A (en) * | 2009-06-30 | 2011-01-05 | 武汉思威科技投资有限公司 | Wireless nuclear phase instrument |
| CN201532437U (en) * | 2009-11-13 | 2010-07-21 | 徐天锡 | Cable number checking and phase checking device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569629A (en) * | 2015-02-03 | 2015-04-29 | 孙超 | Phase sequence tester of low-voltage cables |
| CN106226608A (en) * | 2016-08-02 | 2016-12-14 | 国家电网公司 | A kind of cable phase sequence determinator |
| CN107831376A (en) * | 2017-12-06 | 2018-03-23 | 国网宁夏电力有限公司宁东供电公司 | Intelligent nuclear phase meter and Intelligent nuclear phase method |
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| CN103267904B (en) | 2015-08-05 |
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