CN106990377A - A kind of 10kV switch cabinet current transformers test fixture - Google Patents

A kind of 10kV switch cabinet current transformers test fixture Download PDF

Info

Publication number
CN106990377A
CN106990377A CN201710337397.7A CN201710337397A CN106990377A CN 106990377 A CN106990377 A CN 106990377A CN 201710337397 A CN201710337397 A CN 201710337397A CN 106990377 A CN106990377 A CN 106990377A
Authority
CN
China
Prior art keywords
current transformer
crank arm
clamp
test fixture
switch cabinet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710337397.7A
Other languages
Chinese (zh)
Other versions
CN106990377B (en
Inventor
崔朋
李洪金
王起琦
石磊
王安龙
吴志臣
庞天皓
王子路
刘妍
韩长杰
张旗
王楚琪
雷志鹏
孙思慧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Liaoning Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201710337397.7A priority Critical patent/CN106990377B/en
Publication of CN106990377A publication Critical patent/CN106990377A/en
Application granted granted Critical
Publication of CN106990377B publication Critical patent/CN106990377B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/02Testing 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

本发明涉及一种10kV开关柜电流互感器试验夹具,包括有拐臂,拐臂前端固定一个双臂式线夹,线夹头部设置有触头,触头连接试验电缆,拐臂后端安装螺杆手柄。本发明一种10kV开关柜电流互感器试验夹具采用倒U型结构,倒U型拐臂由绝缘性良好且容易加工的电木一体成型,既具有一定的机械强度,同时具有绝缘特性。拐臂前端为可旋转的双臂式线夹可同时夹住电流互感器的两个一次接线端,减少了试验接线次数。线夹为铜质多排触头,一端固定在活动轴上,另一端使用弹簧支撑,既增大了与电流互感器一次接线板的接触面积,使其接触良好,并且保证大电流通过,又能增加线夹的紧固性,能可靠固定,防止脱落。

The invention relates to a test fixture for a current transformer of a 10kV switch cabinet, which includes a crank arm, a double-arm clamp is fixed at the front end of the crank arm, a contact is arranged on the head of the clamp, the contact is connected to a test cable, and the rear end of the crank arm is installed. Screw handle. A 10kV switch cabinet current transformer test fixture of the present invention adopts an inverted U-shaped structure, and the inverted U-shaped crank arm is integrally formed of Bakelite with good insulation and easy processing, and has both certain mechanical strength and insulation properties. The front end of the crank arm is a rotatable double-arm clamp that can simultaneously clamp the two primary terminals of the current transformer, reducing the number of test connections. The wire clip is a copper multi-row contact, one end is fixed on the movable shaft, and the other end is supported by a spring, which not only increases the contact area with the primary wiring board of the current transformer, makes it in good contact, but also ensures the passage of large current, and It can increase the fastness of the wire clip, and can be fixed reliably to prevent falling off.

Description

一种10kV开关柜电流互感器试验夹具A 10kV switch cabinet current transformer test fixture

技术领域technical field

本发明涉及设计一种10kV开关柜电流互感器试验夹具。The invention relates to the design of a test fixture for a current transformer of a 10kV switch cabinet.

背景技术Background technique

随着10kV开关柜在国网电力系统和大型企业变电站中广泛应用,10kV电流互感器试验任务日益增加,传统的试验方法存在操作困难,效率低下等问题。所以如何提高10kV电流互感器试验效率和试验安全是急需解决的问题。传统试验的步骤为:一、试验人员将手伸进柜体内部探明一次侧螺丝位置;二、根据探明的位置将线夹伸进柜体进行盲夹;三、待线夹夹住桩头螺丝后,晃动夹具确定是否夹紧,如果夹线失败,则重复上述操作。柜体内部空间狭窄,只能允许手臂伸入,且螺丝处于视野盲区,导致夹线操作困难,线夹易脱落,存在安全隐患。又由于桩头螺丝露出较短,接触面接小,所以进行大电流试验时会因接触电阻大,升流困难,导致试验失败,需反复进行夹线操作,降低了试验效率。可见传统夹具的结构和操作受限是试验效率低下的主要原因,需要研制新型夹具代替传统夹具,从而提高试验效率。With the widespread application of 10kV switchgear in the national grid power system and large-scale enterprise substations, the test tasks of 10kV current transformers are increasing day by day, and the traditional test methods have problems such as difficult operation and low efficiency. So how to improve the test efficiency and test safety of 10kV current transformer is an urgent problem to be solved. The steps of the traditional test are as follows: 1. The tester puts his hands into the cabinet body to find out the position of the primary side screw; 2. Puts the wire clamp into the cabinet body for blind clamping according to the proven position; 3. Wait for the wire clamp to clamp the pile After tightening the screw, shake the clamp to check whether it is clamped. If the clamp fails, repeat the above operation. The internal space of the cabinet is narrow, only the arm can be extended in, and the screw is in the blind area of vision, which makes the clamping operation difficult, and the clamp is easy to fall off, posing a safety hazard. In addition, due to the short exposure of the pile head screw and the small contact surface, the high current test will cause the test to fail due to the large contact resistance and difficulty in raising the current. Repeated clamping operations are required, which reduces the test efficiency. It can be seen that the structure and operation limitation of the traditional fixture is the main reason for the low test efficiency, and it is necessary to develop a new fixture to replace the traditional fixture, so as to improve the test efficiency.

发明内容Contents of the invention

本发明要解决的技术问题是提供一种10kV开关柜电流互感器试验夹具,该夹具采用U型结构,属于通用型夹具,即可用于电流互感器变比、极性、伏安特性等试验,也可用于电流互感器升流试验。The technical problem to be solved by the present invention is to provide a 10kV switch cabinet current transformer test fixture, which adopts a U-shaped structure and belongs to a general-purpose fixture, which can be used for tests such as the transformation ratio, polarity, and volt-ampere characteristics of the current transformer. It can also be used for current transformer boosting test.

为了解决现有技术存在的问题,本发明采用的技术方案是:In order to solve the problems existing in the prior art, the technical solution adopted in the present invention is:

一种10kV开关柜电流互感器试验夹具,包括有拐臂, 拐臂前端固定一个双臂式线夹,线夹头部设置有触头,触头连接试验电缆,拐臂后端安装螺杆手柄。A 10kV switch cabinet current transformer test fixture, including a crank arm, a double-arm clamp is fixed at the front end of the crank arm, a contact is arranged on the head of the clamp, the contact is connected to the test cable, and a screw handle is installed at the rear end of the crank arm.

所述的拐臂前端与双臂式线夹之间通过螺栓连接。The front end of the crank arm and the double-arm clamp are connected by bolts.

所述的拐臂为倒U型。The crank arm is inverted U-shaped.

所述的拐臂由电木制成。Described crank arm is made of Bakelite.

所述的双臂式线夹是可旋转的。The double-arm clamp is rotatable.

所述的触头为多排触头,一端固定在活动轴上,另一端使用弹簧支撑。The contacts are multi-row contacts, one end is fixed on the movable shaft, and the other end is supported by a spring.

所述的触头为铜质的。The contacts are made of copper.

所述的螺杆底部加装绝缘垫。An insulating pad is added to the bottom of the screw.

本发明所具有的优点与效果是:Advantage and effect that the present invention has are:

本发明一种10kV开关柜电流互感器试验夹具采用倒U型结构,倒U型拐臂由绝缘性良好且容易加工的电木一体成型,既具有一定的机械强度,同时具有绝缘特性。拐臂前端为可旋转的双臂式线夹可同时夹住电流互感器的两个一次接线端,减少了试验接线次数。线夹为铜质多排触头,一端固定在活动轴上,另一端使用弹簧支撑,既增大了与电流互感器一次接线板的接触面积,使其接触良好,并且保证大电流通过,又能增加线夹的紧固性,能可靠固定,防止脱落。拐臂后端加装螺杆手柄,底部加装绝缘垫,增大摩擦力。本发明属于通用型夹具,既可用于电流互感器变比、极性、伏安特性等试验,也可用于电流互感器升流试验。此夹具的使用不需要作业人员进入开关柜内部,方便使用,可以大大提高电流互感器试验效率,节省试验时间,减少试验人员工作量,同时保证了人身安全。在夹线过程中具有安全系数高、工作强度低及工作效率高及减轻劳动强度的特点,能够使夹具的拆装简单方便,大幅减少夹具拆装时间,能有效提高10kV开关柜电流互感器试验效率,提高检修维护工作的质量,保障了供电可靠性。A 10kV switch cabinet current transformer test fixture of the present invention adopts an inverted U-shaped structure, and the inverted U-shaped crank arm is integrally formed of Bakelite with good insulation and easy processing, and has both certain mechanical strength and insulation properties. The front end of the crank arm is a rotatable double-arm clamp that can simultaneously clamp the two primary terminals of the current transformer, reducing the number of test connections. The wire clip is a copper multi-row contact, one end is fixed on the movable shaft, and the other end is supported by a spring, which not only increases the contact area with the primary wiring board of the current transformer, makes it in good contact, but also ensures the passage of large current, and It can increase the fastness of the wire clip, and can be fixed reliably to prevent falling off. A screw handle is installed at the rear end of the crank arm, and an insulating pad is installed at the bottom to increase friction. The invention belongs to a general-purpose fixture, which can be used not only for tests of transformation ratio, polarity, volt-ampere characteristics and the like of current transformers, but also for current transformer rising tests. The use of this fixture does not require operators to enter the inside of the switch cabinet, which is convenient to use, can greatly improve the test efficiency of current transformers, save test time, reduce the workload of test personnel, and ensure personal safety at the same time. In the clamping process, it has the characteristics of high safety factor, low work intensity, high work efficiency and reduced labor intensity. It can make the disassembly and assembly of the fixture simple and convenient, greatly reduce the time of fixture disassembly and assembly, and can effectively improve the current transformer test of 10kV switchgear. Efficiency, improve the quality of inspection and maintenance work, and ensure the reliability of power supply.

附图说明Description of drawings

图1为本发明一种10kV开关柜电流互感器试验夹具的整体结构示意图;Fig. 1 is the overall structure schematic diagram of a kind of 10kV switchgear current transformer test fixture of the present invention;

图2为局部结构放大图。Figure 2 is an enlarged view of the local structure.

图中主要零件:拐臂1,螺栓2,双臂式线夹3,触头4,电缆5,螺杆手柄6,绝缘垫7,活动轴8,弹簧9。Main parts in the figure: crank arm 1, bolt 2, double-armed clamp 3, contact 4, cable 5, screw handle 6, insulating pad 7, movable shaft 8, spring 9.

具体实施方式detailed description

下面结合附图对本发明作进一步详述:Below in conjunction with accompanying drawing, the present invention is described in further detail:

如图1所示,本发明一种10kV开关柜电流互感器试验夹具,包括有倒U型拐臂1,倒U型拐臂1材质选择绝缘性良好且容易加工的电木一体成型。拐臂前端以螺栓2固定一个可旋转的双臂式线夹3,线夹头部为多个铜质弹簧触头4。如图2所示,所述的触头为多排触头,一端固定在活动轴8上,另一端使用弹簧9支撑。触头可连接试验电缆5。拐臂后端加装螺杆手柄6,螺杆底部加装绝缘垫7。As shown in Figure 1, a 10kV switch cabinet current transformer test fixture of the present invention includes an inverted U-shaped crank arm 1, and the material of the inverted U-shaped crank arm 1 is integrally formed with Bakelite with good insulation and easy processing. A rotatable double-arm clamp 3 is fixed with a bolt 2 at the front end of the crank arm, and the head of the clamp is a plurality of copper spring contacts 4 . As shown in FIG. 2 , the contacts are multi-row contacts, one end is fixed on the movable shaft 8 , and the other end is supported by a spring 9 . The contact can be connected to the test cable 5 . A screw handle 6 is installed at the rear end of the crank arm, and an insulating pad 7 is installed at the bottom of the screw rod.

本发明在使用时,前端的铜制触头压在电流互感器的接线铝排上,后端置于开关柜构架上。通过旋转手柄上的手柄,使线夹可靠接触电流互感器的接线排,夹具通过电缆连接到试验仪器,方便快捷。When the present invention is in use, the copper contact at the front end is pressed on the wiring aluminum bar of the current transformer, and the rear end is placed on the frame of the switch cabinet. By rotating the handle on the handle, the wire clamp can reliably contact the terminal block of the current transformer, and the clamp is connected to the test instrument through the cable, which is convenient and quick.

Claims (8)

1.一种10kV开关柜电流互感器试验夹具,其特征在于:包括有1. A 10kV switch cabinet current transformer test fixture, characterized in that: comprising 拐臂, 拐臂前端固定一个双臂式线夹,线夹头部设置有触头,触头连接试验电缆,拐臂后端安装螺杆手柄。Knuckle arm, a double-arm clamp is fixed at the front end of the crank arm, and a contact is arranged on the head of the clamp, which is connected to the test cable, and a screw handle is installed at the rear end of the crank arm. 2.根据权利要求1所述的一种10kV开关柜电流互感器试验夹具,其特征在于:所述的拐臂前端与双臂式线夹之间通过螺栓连接。2. A 10kV switch cabinet current transformer test fixture according to claim 1, characterized in that: the front end of the crank arm and the double-arm clamp are connected by bolts. 3.根据权利要求1或2所述的一种10kV开关柜电流互感器试验夹具,其特征在于:所述的拐臂为倒U型。3. A 10kV switchgear current transformer test fixture according to claim 1 or 2, characterized in that: the crank arm is an inverted U shape. 4.根据权利要求3所述的一种10kV开关柜电流互感器试验夹具,其特征在于:所述的拐臂由电木制成。4. A 10kV switch cabinet current transformer test fixture according to claim 3, characterized in that: said crank arm is made of Bakelite. 5.根据权利要求1所述的一种10kV开关柜电流互感器试验夹具,其特征在于:所述的双臂式线夹是可旋转的。5. A test fixture for a 10kV switch cabinet current transformer according to claim 1, characterized in that: said double-arm clamp is rotatable. 6.根据权利要求1所述的一种10kV开关柜电流互感器试验夹具,其特征在于:所述的触头为多排触头,一端固定在活动轴上,另一端使用弹簧支撑。6. A 10kV switchgear current transformer test fixture according to claim 1, characterized in that: the contacts are multi-row contacts, one end is fixed on the movable shaft, and the other end is supported by a spring. 7.根据权利要求1或6所述的一种10kV开关柜电流互感器试验夹具,其特征在于:所述的触头为铜质的。7. A 10kV switchgear current transformer test fixture according to claim 1 or 6, characterized in that: said contacts are made of copper. 8.根据权利要求1所述的一种10kV开关柜电流互感器试验夹具,其特征在于:所述的螺杆底部加装绝缘垫。8. A 10kV switch cabinet current transformer test fixture according to claim 1, characterized in that: the bottom of the screw rod is equipped with an insulating pad.
CN201710337397.7A 2017-05-15 2017-05-15 10kV switch cabinet current transformer test fixture Active CN106990377B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710337397.7A CN106990377B (en) 2017-05-15 2017-05-15 10kV switch cabinet current transformer test fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710337397.7A CN106990377B (en) 2017-05-15 2017-05-15 10kV switch cabinet current transformer test fixture

Publications (2)

Publication Number Publication Date
CN106990377A true CN106990377A (en) 2017-07-28
CN106990377B CN106990377B (en) 2024-02-23

Family

ID=59420463

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710337397.7A Active CN106990377B (en) 2017-05-15 2017-05-15 10kV switch cabinet current transformer test fixture

Country Status (1)

Country Link
CN (1) CN106990377B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108594154A (en) * 2018-04-12 2018-09-28 广东电网有限责任公司 A kind of binding clip of verification transformer station direct current system leakage current mutual inductor
CN112345997A (en) * 2020-11-24 2021-02-09 天津市百利纽泰克电气科技有限公司 Secondary test fixture for current transformer

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11299022A (en) * 1998-04-14 1999-10-29 Fuji Electric Co Ltd Testing equipment for current transformers in gas-insulated switchgear
CN201548567U (en) * 2009-10-10 2010-08-11 安徽省电力公司滁州供电公司 One-time test clip for on-site verification of current transformers
CN202159893U (en) * 2011-07-19 2012-03-07 广东电网公司东莞供电局 A switchgear with a zero-sequence current transformer
CN202216980U (en) * 2011-09-07 2012-05-09 湖北省电力公司十堰供电公司 Special wire clamp for TA test
CN203148982U (en) * 2013-04-03 2013-08-21 国家电网公司 Test fixture for loop resistance of circuit breaker
CN103474797A (en) * 2013-09-03 2013-12-25 国家电网公司 Ground clip in switch cabinet
CN104142486A (en) * 2013-11-29 2014-11-12 国家电网公司 Voltage transformer testing tool
CN204439671U (en) * 2015-03-09 2015-07-01 国家电网公司 Novel high-pressure switch circuit resistance measured material
CN204666659U (en) * 2015-03-20 2015-09-23 云南电网有限责任公司西双版纳供电局 A kind of high-tension switch cabinet equipment test wiring new tool
CN204882617U (en) * 2015-06-30 2015-12-16 国网山东省电力公司淄博供电公司 Portable mutual -inductor reference test bar
CN205067534U (en) * 2015-10-27 2016-03-02 国家电网公司 High voltage circuit breaker return circuit resistance test anchor clamps
CN105425190A (en) * 2015-12-10 2016-03-23 国网四川省电力公司电力科学研究院 Strut-type current transformer field test primary wiring apparatus
CN205720326U (en) * 2016-06-23 2016-11-23 兴安供电公司 A kind of electrical equipment rising test auxiliary device
CN205787085U (en) * 2016-06-30 2016-12-07 温州大学 The transformer loading fixture of current transformer detection equipment
CN206710584U (en) * 2017-05-15 2017-12-05 国网辽宁省电力有限公司营口供电公司 A kind of 10kV switch cabinet current transformers test fixture

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11299022A (en) * 1998-04-14 1999-10-29 Fuji Electric Co Ltd Testing equipment for current transformers in gas-insulated switchgear
CN201548567U (en) * 2009-10-10 2010-08-11 安徽省电力公司滁州供电公司 One-time test clip for on-site verification of current transformers
CN202159893U (en) * 2011-07-19 2012-03-07 广东电网公司东莞供电局 A switchgear with a zero-sequence current transformer
CN202216980U (en) * 2011-09-07 2012-05-09 湖北省电力公司十堰供电公司 Special wire clamp for TA test
CN203148982U (en) * 2013-04-03 2013-08-21 国家电网公司 Test fixture for loop resistance of circuit breaker
CN103474797A (en) * 2013-09-03 2013-12-25 国家电网公司 Ground clip in switch cabinet
CN104142486A (en) * 2013-11-29 2014-11-12 国家电网公司 Voltage transformer testing tool
CN204439671U (en) * 2015-03-09 2015-07-01 国家电网公司 Novel high-pressure switch circuit resistance measured material
CN204666659U (en) * 2015-03-20 2015-09-23 云南电网有限责任公司西双版纳供电局 A kind of high-tension switch cabinet equipment test wiring new tool
CN204882617U (en) * 2015-06-30 2015-12-16 国网山东省电力公司淄博供电公司 Portable mutual -inductor reference test bar
CN205067534U (en) * 2015-10-27 2016-03-02 国家电网公司 High voltage circuit breaker return circuit resistance test anchor clamps
CN105425190A (en) * 2015-12-10 2016-03-23 国网四川省电力公司电力科学研究院 Strut-type current transformer field test primary wiring apparatus
CN205720326U (en) * 2016-06-23 2016-11-23 兴安供电公司 A kind of electrical equipment rising test auxiliary device
CN205787085U (en) * 2016-06-30 2016-12-07 温州大学 The transformer loading fixture of current transformer detection equipment
CN206710584U (en) * 2017-05-15 2017-12-05 国网辽宁省电力有限公司营口供电公司 A kind of 10kV switch cabinet current transformers test fixture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108594154A (en) * 2018-04-12 2018-09-28 广东电网有限责任公司 A kind of binding clip of verification transformer station direct current system leakage current mutual inductor
CN112345997A (en) * 2020-11-24 2021-02-09 天津市百利纽泰克电气科技有限公司 Secondary test fixture for current transformer

Also Published As

Publication number Publication date
CN106990377B (en) 2024-02-23

Similar Documents

Publication Publication Date Title
CN106990377A (en) A kind of 10kV switch cabinet current transformers test fixture
CN203587748U (en) High-voltage insulating rod detecting table
CN203690798U (en) Universal tool for replacing suspension angle tower insulator string
CN202929093U (en) A multi-functional high-voltage electrical testing device
CN206710584U (en) A kind of 10kV switch cabinet current transformers test fixture
CN203800200U (en) Portable ground wire
CN103728540B (en) A kind of alternating-current voltage resistance test device of arc discharge monitoring
CN203205767U (en) Spring pin installer of insulating rod
CN203705482U (en) Dedicated wiring clamping tool for testing insulating property of lightning arrester
CN203759056U (en) AC voltage-resistant support of insulating rod
CN101807758A (en) Test electric connector of low voltage breaker
CN103808984A (en) Insulating support for high-voltage test
CN108693389A (en) A frame type circuit breaker withstand voltage test fixture
CN205720326U (en) A kind of electrical equipment rising test auxiliary device
CN201490621U (en) 35kV and above voltage level live working short circuit protection rope
CN205542534U (en) Switch static contact structure
CN205229395U (en) A pressure resistance test installation for insulator spindle or earth bar
CN209496774U (en) Detachable disconnecting switch
CN204165849U (en) Pin Flexing Apparatus
CN204142876U (en) A kind of Leakage Current of Zinc-oxide Lightning Arresters measures servicing unit
CN201765153U (en) Special device of great current impact test for flat-conductor welding sample
CN103926428B (en) A kind of VS1 type circuit breaker characteristic test sensor special support
CN204008734U (en) A kind of circuit breaker contact persistence test jointer
CN208805545U (en) A kind of loop resistance test device
CN107830999B (en) A kind of fatigue tester suitable for device clamp

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant