CN201828641U - Portable and integral alternating-current/direct-current tester for high-voltage motor - Google Patents
Portable and integral alternating-current/direct-current tester for high-voltage motor Download PDFInfo
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- CN201828641U CN201828641U CN2010205731814U CN201020573181U CN201828641U CN 201828641 U CN201828641 U CN 201828641U CN 2010205731814 U CN2010205731814 U CN 2010205731814U CN 201020573181 U CN201020573181 U CN 201020573181U CN 201828641 U CN201828641 U CN 201828641U
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Abstract
The utility model relates to an apparatus for an insulation test of stator windings of a high-voltage motor, in particular to a portable and integral alternating-current/direct-current tester for the a high-voltage motor. The portable and integral alternating-current/direct-current tester is characterized in that the tester comprises a voltage regulator (TB); the input end of the voltage regulator (TB) is connected with a power supply by a switching circuit, and the an output end of the voltage regulator (TB) is connected with the an input end of a transformer (B); one of the output ends of the transformer (B) is connected with an alternating-current testing end and is also connected with a direct-current testing end by a high-voltage rectifying circuit, and the other one of the output ends is grounded by a milliampere meter (mA) and a microampere meter (MuA) which are connected in series; and the alternating-current testing end is grounded by a reactor (G). The portable and integral alternating-current/direct-current tester smartly utilizes the principle of parallel compensation, so that the weight of the testing apparatus is greatly reduced.
Description
Technical field
The utility model relates to Stator of HV Electromotor Insulation Test equipment, especially light integral type high-tension motor alternating current-direct current exerciser.
Background technology
High-tension motor means the asynchronous motor of stator rated voltage at 3000V, 6000V, 10000V.This serial motor is widely used in industries such as generating, chemical industry, cement, iron and steel, coal, and it is ten million platform quantitatively.High-tension motor is widely used in electric power, metallurgy, and chemical industry etc. the power-equipment of all trades and professions, is a kind of electromechanical equipment that has a large capacity and a wide range, and very vital role is arranged in the development of the national economy.According to electric handing-over and preventive trial rules, high-tension motor must carry out industrial frequency AC withstand voltage test and DC voltage withstand test.The industrial frequency AC withstand voltage test of motor stator winding is the mandatory test of carrying out according to national standard and industry standard (rules), is the necessary means that guarantees the safety and economic operation of electric system and electrical equipment.Wherein commissioning test, overhaul test, preventive trial can determine that can new clothes equipment put into operation, or find the hidden danger of the electrical equipment put into operation in advance, and prevention apparatus damages.
At present, all be to become the high voltage ac/dc test apparatus to realize with associated class components and parts assembled on site together during the withstand voltage test of high-tension motor alternating current-direct current temporarily, the overtension that these instruments have, the capacity that has is excessive, also will employ two cover instruments during test simultaneously, that is: HVDC TEST device and industrial frequency AC exerciser are tested to get up to take a lot of work, require great effort, also dangerous, bring a lot of inconvenience for the electrical test personnel.
The utility model content
The purpose of this utility model provides a kind of light integral type high-tension motor alternating current-direct current exerciser, and simple with the existing equipment structure compared, weight more significantly reduces, thereby has made things convenient for use.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of light integral type high-tension motor alternating current-direct current exerciser, its special feature is, comprise a pressure regulator, the input end of this pressure regulator is connected with power supply by on-off circuit, and the input end of output termination one transformer of this pressure regulator, end in the output terminal of this transformer also connects the DC test end by high-voltage rectifier when connecing the alternating-current measurement end, and the other end in this output terminal is by the milliammeter and the microampere meter ground connection of series connection; Above-mentioned alternating-current measurement end is also by reactor ground connection.
Wherein on-off circuit is the relay latching circuit.
Its repeat circuit latching circuit comprises two pairs of normally opened contacts in the A.C. contactor that is connected on respectively between pressure regulator input end and the power supply, another of this A.C. contactor often opened to connect with the coil of a normally closed button and A.C. contactor after the button parallel connection to normally opened contact and again and constituted on-off circuit, and this on-off circuit is connected in parallel on both ends of power.
Wherein the input end at transformer is equipped with current transformer, and this current transformer is connected with the coil of current relay, thereby and a pair of normally closed contact of this current relay is connected in the on-off circuit deenergization when electric current surpasses setting valve.
Wherein high-voltage rectifier is a high voltage silicon rectifier stack.
Wherein between high-voltage rectifier and DC test end, also be in series with current-limiting resistance.
Wherein microampere meter is also in parallel with a short circuiting switch.
The utility model is used for the industrial frequency AC withstand voltage test and the DC voltage withstand test of motor stator winding, the utility model utilizes the principle of shunt compensation cleverly, and the R sections core transformer of high magnetic conduction, alleviated the weight of testing equipment greatly, as: industrial frequency AC withstand voltage test and the DC voltage withstand test of making a 6000kw motor, the general assembly (TW) of test battery equipment from before hundreds of jin, be relieved to present 20kg, test required experiment power supply capacity big (10KVA) in the past, only need 1KVA just can finish experiment work now, and guaranteed frequency and waveform quality.
Description of drawings
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model exerciser comprises a pressure regulator TB, the input end of this pressure regulator TB is connected with power supply by on-off circuit, the input end of a transformer B of output termination, X end in this transformer B output terminal is by the milliammeter mA and the microampere meter uA ground connection of series connection, and high pressure output A termination alternating-current measurement end A1 and DC test end A2, obtaining of direct current is through high pressure silicon treadle-operated tilt hammer for hulling rice D rectification after DC test end A2 exports, and exchanging output is directly directly to export through alternating-current measurement end A1 from step-up side.Alternating current-direct current output test lead can be selected output level pressure type (being AC and DC) for different equipment and different requirements, and this exerciser has been realized two kinds of purposes, i.e. the industrial frequency AC withstand voltage test and the DC voltage withstand test of motor.
When carrying out the industrial frequency AC withstand voltage test (as shown in Figure 1), pressure regulator TB boosts from zero, at alternating-current measurement end A1 and connect one and just can finish the industrial frequency AC withstand voltage test work of motor with the reactor G that is complementary by test equipment.
As shown in Figure 1; wherein on-off circuit is the relay latching circuit that adopts in the aut.eq.; when when testing; the motor insulation is in case breakdown; current relay IJ action in the aut.eq.; can cut off the electricity supply automatically, protection motor Fault of Insulating Breakdown does not enlarge, and has also protected testing equipment not to be damaged simultaneously.
As shown in Figure 1, two of A.C. contactor C couples of main contacts C1 in the exerciser, C2 is serially connected in respectively between pressure regulator TB input end and the power supply, in the A.C. contactor another is to often leaving auxiliary contact C3, with connect with a pair of normally closed contact IJ1 of current relay IJ and the coil of normally closed button TN and AC relay IJ again after one is often opened button HN parallel connection, wherein often opening button HN also is connected in series with the normally opened contact XC of a travel switch, (travel switch is a little microswitch that is contained in the pressure regulator TB rotating shaft, in order to prevent the maloperation design, can guarantee that pressure regulator TB starts in zero position, if pressure regulator TB is not in zero-bit, open the travel switch contact, control loop is obstructed, and pressure regulator TB input end and power supply in the control device can't be connected).
As shown in Figure 1, wherein in the input end loop of transformer, sealed in the current transformer of current relay IJ, current relay IJ coil is connected on the secondary side of current transformer, and a pair of normally closed contact IJ1 of this current relay IJ is connected in the on-off circuit, the setting valve of current relay IJ can be according to being adjusted by the size of test equipment test electric current, when carrying out the withstand voltage test of motor industrial frequency AC, if overload or motor insulation breakdown, when current relay IJ coil current surpasses setting valve, electric current in current relay IJ action (starting) cut-off switch circuit A.C. contactor C coil, A.C. contactor C main contacts C1, C2 disconnects, thus deenergization.When carrying out the industrial frequency AC withstand voltage test, need the switch in parallel with microampere meter uA is changed to conducting state, in order to avoid burn out microampere meter uA, can disconnect this switch when carrying out DC voltage withstand test.
High-voltage rectifier is high voltage silicon rectifier stack D (as shown in Figure 1), carries out obtaining high-voltage DC power supply after the rectification, and the DC voltage withstand test usefulness of power supply motivation, resistance R 1 is used for current limliting.
In order to satisfy the test needs of heavy-duty generator and other electrical equipment, the utility model utilizes under the inductance state in parallel with electric capacity, the direction of inductive current and capacitance current differs the principles of electric and electronic engineering of 180 degree angles, employing is than the testing transformer of low capacity, according to generator nameplate parameter, manufactured the compensation reactor G corresponding, compensated capacitance current in the shunt circuit, made testing transformer and experiment power supply only bear very little real component with shunt reactor G with it.
This light integral type high-tension motor alternating current-direct current exerciser is checked by site test, has realized lightly really, and safety, ideal effect efficiently effectively replace heavy, loaded down with trivial details in the past testing equipment, bring great convenience for electrical test personnel and experiment work.
Claims (7)
1. light integral type high-tension motor alternating current-direct current exerciser, it is characterized in that: comprise a pressure regulator (TB), the input end of this pressure regulator (TB) is connected with power supply by on-off circuit, and the input end of output termination one transformer (B) of this pressure regulator (TB), end in the output terminal of this transformer (B) also connects the DC test end by high-voltage rectifier when connecing the alternating-current measurement end, and the other end in this output terminal is by the milliammeter (mA) and microampere meter (uA) ground connection of series connection;
Above-mentioned alternating-current measurement end is also by reactor (G) ground connection.
2. light integral type high-tension motor alternating current-direct current exerciser as claimed in claim 1, it is characterized in that: wherein on-off circuit is the relay latching circuit.
3. light integral type high-tension motor alternating current-direct current exerciser as claimed in claim 2, it is characterized in that: its repeat circuit latching circuit comprises two pairs of normally opened contacts in the A.C. contactor (C) that is connected on respectively between pressure regulator (TB) input end and the power supply, another of this A.C. contactor (C) often opened to connect with the coil of a normally closed button (TN) and A.C. contactor (C) after button (HN) parallel connection to normally opened contact and again and constituted on-off circuit, and this on-off circuit is connected in parallel on both ends of power.
4. light integral type high-tension motor alternating current-direct current exerciser as claimed in claim 1, it is characterized in that: wherein the input end at transformer (B) is equipped with current transformer, this current transformer is connected with the coil of current relay (IJ), and this current relay (IJ) thus a pair of normally closed contact be connected in the on-off circuit deenergization when electric current surpasses setting valve.
5. light integral type high-tension motor alternating current-direct current exerciser as claimed in claim 1, it is characterized in that: wherein high-voltage rectifier is high voltage silicon rectifier stack (D).
6. light integral type high-tension motor alternating current-direct current exerciser as claimed in claim 1 is characterized in that: wherein also be in series with current-limiting resistance between high-voltage rectifier and DC test end.
7. light integral type high-tension motor alternating current-direct current exerciser as claimed in claim 1, it is characterized in that: wherein microampere meter (uA) is also in parallel with a short circuiting switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205731814U CN201828641U (en) | 2010-10-22 | 2010-10-22 | Portable and integral alternating-current/direct-current tester for high-voltage motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205731814U CN201828641U (en) | 2010-10-22 | 2010-10-22 | Portable and integral alternating-current/direct-current tester for high-voltage motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201828641U true CN201828641U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205731814U Expired - Lifetime CN201828641U (en) | 2010-10-22 | 2010-10-22 | Portable and integral alternating-current/direct-current tester for high-voltage motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201828641U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738767A (en) * | 2012-06-11 | 2012-10-17 | 辽宁省电力有限公司沈阳供电公司 | Intelligent protection device for on-site withstand voltage equipment |
| CN109655645A (en) * | 2019-01-24 | 2019-04-19 | 山西晋缘电力化学清洗中心有限公司 | The pilot system of the dual-purpose high voltage power supply of AC and DC |
-
2010
- 2010-10-22 CN CN2010205731814U patent/CN201828641U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738767A (en) * | 2012-06-11 | 2012-10-17 | 辽宁省电力有限公司沈阳供电公司 | Intelligent protection device for on-site withstand voltage equipment |
| CN102738767B (en) * | 2012-06-11 | 2016-02-03 | 辽宁省电力有限公司沈阳供电公司 | Intelligent protection device for on-site withstand voltage equipment |
| CN109655645A (en) * | 2019-01-24 | 2019-04-19 | 山西晋缘电力化学清洗中心有限公司 | The pilot system of the dual-purpose high voltage power supply of AC and DC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZANG XU Free format text: FORMER OWNER: PENG FARONG Effective date: 20120203 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 753202 SHIZUISHAN, NINGXIA HUI AUTONOMOUS REGION TO: 101021 TONGZHOU, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120203 Address after: 101021, room 16, building 561, Barker street, two street, happy paradise, Beijing, Tongzhou District Patentee after: Cang Xu Address before: 753202 production technology department, the Ningxia Hui Autonomous Region Power Generation Corporation, Shizuishan power generation industrial zone, Shizuishan Patentee before: Peng Farong |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |