CN105044547A - Current transformer polarity tester - Google Patents
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- CN105044547A CN105044547A CN201510460028.8A CN201510460028A CN105044547A CN 105044547 A CN105044547 A CN 105044547A CN 201510460028 A CN201510460028 A CN 201510460028A CN 105044547 A CN105044547 A CN 105044547A
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Abstract
本发明涉及一种对电路元件进行不正确连接测试的装置，具体涉及一种电流互感器极性测试仪，包括上、下壳体，上、下壳体内设置测试电路，测试电路包括供电模块，供电模块并联放电电源，放电电源正负极之间串接启动开关、电位器和电流互感器一次侧正负接线端子，对应电流互感器一次侧正负接线端子设置电流互感器二次侧正负接线端子，测试元件串接在电流互感器二次侧正负接线端子之间，供电模块、放电电源、电位器、启动开关和电流互感器一次侧正负接线端子固定在下壳体上，测试元件和电流互感器二次侧正负接线端子设置在上壳体上。本发明结构简单，操作简便，测试直观，准确度高，安全可靠，省时省力。
The invention relates to a device for testing incorrect connection of circuit elements, in particular to a current transformer polarity tester, which includes upper and lower housings, and a test circuit is arranged in the upper and lower housings, the test circuit includes a power supply module, The power supply module is connected in parallel with the discharge power supply, and the start switch, the potentiometer, and the positive and negative terminals of the primary side of the current transformer are connected in series between the positive and negative poles of the discharge power supply, and the positive and negative terminals of the secondary side of the current transformer are set corresponding to the positive and negative terminals of the primary side of the current transformer. Terminals, the test element is connected in series between the positive and negative terminals of the secondary side of the current transformer, the power supply module, discharge power supply, potentiometer, start switch and the positive and negative terminals of the primary side of the current transformer are fixed on the lower case, the test element and the positive and negative terminals of the secondary side of the current transformer are arranged on the upper casing. The invention has the advantages of simple structure, convenient operation, intuitive testing, high accuracy, safety and reliability, and saves time and effort.
Description
技术领域technical field
本发明涉及一种对电路元件进行不正确连接测试的装置，具体涉及一种电流互感器极性测试仪。The invention relates to a device for testing incorrect connection of circuit elements, in particular to a polarity tester for a current transformer.
背景技术Background technique
目前测量电流互感器极性的试验方法主要是直流法；即用干电池将其正极接于电流互感器的一次侧L1，L2接负极，互感器的二次侧Kl接毫安表正极，负极接K2，电池接通瞬间毫安表指针正偏，断开后，毫安表指针负偏，说明互感器接在电池正极上的端头与接在毫安表正端的端头为同极性，如指针摆动与上述相反为减极性。试验时需要一人在互感器侧操作并呼唱，受到两人同步，干电池短路电流小造成电流表偏转幅度小及环境影响，很容易误判，而且两人都要几次更改接线，采用其它大容量电池直接短路又容易造成危险。At present, the test method for measuring the polarity of the current transformer is mainly the direct current method; that is, use a dry battery to connect its positive pole to the primary side L1 of the current transformer, L2 to the negative pole, and the secondary side K1 of the transformer to the positive pole of the mA meter, and the negative pole to the positive pole of the mA meter. K2, the pointer of the mA meter is positively biased when the battery is connected, and the pointer of the mA meter is negatively biased after the battery is disconnected, indicating that the terminal connected to the positive pole of the battery and the terminal connected to the positive terminal of the mA meter are of the same polarity. If the pointer swing is opposite to the above, it is depolarization. During the test, one person is required to operate and sing on the transformer side. Due to the synchronization of two people, the small short-circuit current of the dry battery causes the small deflection range of the ammeter and the impact of the environment. It is easy to misjudge, and two people have to change the wiring several times. A direct short circuit of the battery can easily cause danger.
发明内容Contents of the invention
为解决上述技术中的不足，本发明的目的在于：提供一种电流互感器极性测试仪，结构简单，操作简便，测试直观，准确度高，安全可靠，省时省力。In order to solve the deficiencies in the above technologies, the object of the present invention is to provide a current transformer polarity tester, which has a simple structure, easy operation, intuitive testing, high accuracy, safety and reliability, and saves time and effort.
为解决其技术问题，本发明所采取的技术方案为：For solving its technical problem, the technical scheme that the present invention takes is:
所述电流互感器极性测试仪，包括壳体，壳体包括相互铰接的上壳体和下壳体，壳体内设置测试电路，所述测试电路包括供电模块，供电模块并联放电电源，放电电源正负极之间串接启动开关、电位器和电流互感器一次侧正负接线端子，电流互感器一次侧正负接线端子至少设有一组，对应电流互感器一次侧正负接线端子设置电流互感器二次侧正负接线端子，测试元件串接在电流互感器二次侧正负接线端子之间，所述供电模块、放电电源、电位器、启动开关和电流互感器一次侧正负接线端子固定在下壳体上，测试元件和电流互感器二次侧正负接线端子设置在上壳体上。The current transformer polarity tester includes a shell, the shell includes an upper shell and a lower shell hinged to each other, a test circuit is arranged in the shell, the test circuit includes a power supply module, the power supply module is connected in parallel with a discharge power supply, and the discharge power supply The positive and negative poles are connected in series with the start switch, the potentiometer and the positive and negative terminals on the primary side of the current transformer. At least one set of positive and negative terminals on the primary side of the current transformer is provided. The positive and negative terminals on the secondary side of the current transformer, the test element is connected in series between the positive and negative terminals on the secondary side of the current transformer, the power supply module, the discharge power supply, the potentiometer, the start switch and the positive and negative terminals on the primary side of the current transformer It is fixed on the lower casing, and the test element and the secondary side positive and negative terminals of the current transformer are arranged on the upper casing.
本发明使用时，将电流互感器一次侧接入电流互感器一次侧正负接线端子，首先开启启动开关，由供电模块向放电电源进行充电，放电电源通过电位器连接在电流互感器一次侧正负接线端子之间，输出可在1-30A调节，满足不同变比电流互感器的极性测试，同时可进行非电容式电压互感器的极性测试，测试元件连接在电流互感器二次侧正负接线端子之间，根据测试元件的测试结果判断电流互感器极性，一目了然，利用电子电路原理，将传统的至少两人测试电流互感器极性转换为一人单独操作，达到省力、省时、安全的目的，提高了工作效率，降低了操作成本。When the present invention is used, connect the primary side of the current transformer to the positive and negative terminal of the primary side of the current transformer, first turn on the start switch, charge the discharge power supply from the power supply module, and connect the discharge power supply to the positive terminal of the primary side of the current transformer through a potentiometer. Between the negative terminals, the output can be adjusted from 1-30A to meet the polarity test of current transformers with different ratios. At the same time, the polarity test of non-capacitive voltage transformers can be performed. The test element is connected to the secondary side of the current transformer. Between the positive and negative terminals, the polarity of the current transformer is judged according to the test results of the test components, which is clear at a glance. Using the principle of electronic circuits, the traditional at least two people test the polarity of the current transformer is converted into a single operation by one person to save labor and time. , Safety purposes, improve work efficiency and reduce operating costs.
其中，优选方案为：Among them, the preferred scheme is:
所述电流互感器一次侧正极接线端子串接试验开关，在存在多组电流互感器一次侧正负接线端子的情况下，可以根据测试需求导通合适的试验开关进行极性测试，也可进行三相交流互感器的极性测试。The positive terminal on the primary side of the current transformer is connected in series with the test switch. When there are multiple sets of positive and negative terminals on the primary side of the current transformer, a suitable test switch can be turned on according to the test requirements for polarity testing. Polarity test of three-phase AC transformers.
所述放电电源采用电容器，对应电容器串接限流电阻，单只5V10F法拉电容瞬时放电可以达到30A+，本装置6分钟9-11A放电可达100次，充电一次可进行1800次10A左右放电试验，满足试验需要。The discharge power supply uses a capacitor, and the corresponding capacitor is connected in series with a current-limiting resistor. The instantaneous discharge of a single 5V10F farad capacitor can reach 30A+, and the device can discharge 100 times at 9-11A in 6 minutes, and 1800 discharge tests at 10A can be performed once charged. Meet the test needs.
所述供电模块包括充电电源和升压模块，充电电源和升压模块之间设置充电开关，充电电源可采用充电电池，下壳体上对应充电电池设置充电接口，升压模块将充电电源电压转换为放电电源所需电压，并对其进行充电。The power supply module includes a charging power supply and a boost module, a charging switch is set between the charging power supply and the boost module, a rechargeable battery can be used as the charging power supply, a charging interface is set on the lower housing corresponding to the rechargeable battery, and the boost module converts the voltage of the charging power supply The voltage required to discharge the power supply and charge it.
所述上、下壳体分别对应设置上面板和下面板，上面板上嵌入测试元件和电流互感器二次侧正负接线端子，下面板上对应供电模块、电位器和启动开关分别设置充电按钮、电位器旋钮和启动按钮，充电按钮与充电开关相对应，使用时打开壳体，将待测电流互感器的相应接线端子接入上、下面板上，并通过设置的充电按钮实现充电电源向放电电源的充电，启动按钮按下用于开启放电电源的放电动作，电位器旋钮用于调节放电电源的放电电流。The upper and lower housings are respectively provided with an upper panel and a lower panel, the upper panel is embedded with test elements and the secondary side positive and negative terminals of the current transformer, and the lower panel is respectively provided with charging buttons corresponding to the power supply module, potentiometer and start switch , potentiometer knob and start button, the charging button corresponds to the charging switch, when in use, open the case, connect the corresponding terminals of the current transformer to be tested to the upper and lower panels, and realize the charging power supply to the battery through the set charging button. For the charging of the discharge power supply, press the start button to start the discharge action of the discharge power supply, and the potentiometer knob is used to adjust the discharge current of the discharge power supply.
所述上壳体和下壳体之间设置锁扣，上壳体外表面设置把手，上、下壳体合上后可以通过锁扣固定，并通过把手移动壳体，轻便易携。A lock is arranged between the upper shell and the lower shell, and a handle is set on the outer surface of the upper shell. After the upper and lower shells are closed, they can be fixed by the lock, and the shell can be moved by the handle, which is light and easy to carry.
所述测试元件采用电流表，根据电流表的指针偏转方向判断电流互感器极性，如果电流表正偏，电流互感器二次接线正确，反之，则不正确。The test element is an ammeter, and the polarity of the current transformer is judged according to the deflection direction of the pointer of the ammeter. If the ammeter is positively biased, the secondary wiring of the current transformer is correct, otherwise, it is incorrect.
所述测试元件采用发光二极管，根据发光二极管的亮、灭判断电流互感器极性，如果发光二极管亮，电流互感器二次接线正确，反之，则不正确。The test element adopts light-emitting diodes, and the polarity of the current transformer is judged according to the light-emitting diodes on and off. If the light-emitting diodes are on, the secondary wiring of the current transformer is correct, otherwise, it is incorrect.
与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
本发明结构简单，操作简便，测试直观，准确度高，安全可靠，省时省力。使用时，将电流互感器一次侧接入电流互感器一次侧正负接线端子，首先开启启动开关，由供电模块向放电电源进行充电，放电电源通过电位器连接在电流互感器一次侧正负接线端子之间，输出可在1-30A调节，满足不同变比电流互感器的极性测试，测试元件连接在电流互感器二次侧正负接线端子之间，根据测试元件的测试结果判断电流互感器极性，一目了然，利用电子电路原理，将传统的至少两人测试电流互感器极性转换为一人单独操作，达到省力、省时、安全的目的，提高了工作效率，降低了操作成本。The invention has the advantages of simple structure, convenient operation, intuitive testing, high accuracy, safety and reliability, and saves time and effort. When in use, connect the primary side of the current transformer to the positive and negative terminals of the primary side of the current transformer, first turn on the start switch, the power supply module charges the discharge power, and the discharge power is connected to the positive and negative terminals of the primary side of the current transformer through the potentiometer Between the terminals, the output can be adjusted from 1-30A to meet the polarity test of current transformers with different ratios. The test element is connected between the positive and negative terminals of the secondary side of the current transformer, and the current mutual inductance is judged according to the test results of the test element. The polarity of the current transformer is clear at a glance. Using the principle of electronic circuits, the traditional at least two people test the polarity of the current transformer is converted into one person to operate alone, so as to achieve the purpose of saving labor, time and safety, improving work efficiency and reducing operating costs.
附图说明Description of drawings
图1是本发明实施例1电路简图。Fig. 1 is a schematic circuit diagram of Embodiment 1 of the present invention.
图2是本发明实施例1壳体内部平面图。Fig. 2 is a plan view of the inside of the casing of Embodiment 1 of the present invention.
图中：1、上壳体；2、下壳体；3、放电电源；4、启动开关；5、电位器；6、测试元件；7、电流互感器二次侧正负接线端子；8、试验开关；9、限流电阻；10、上面板；11、下面板；12、充电按钮；13、电位器旋钮；14、启动按钮；15、充电电源；16、升压模块；17、充电开关；18、锁扣；19、电流互感器一次侧正负接线端子。In the figure: 1. Upper casing; 2. Lower casing; 3. Discharge power supply; 4. Start switch; 5. Potentiometer; 6. Test element; 7. Positive and negative terminals on the secondary side of the current transformer; 8. Test switch; 9. Current limiting resistor; 10. Upper panel; 11. Lower panel; 12. Charging button; 13. Potentiometer knob; 14. Start button; 15. Charging power supply; 16. Boost module; 17. Charging switch ; 18. Lock; 19. Positive and negative terminals on the primary side of the current transformer.
具体实施方式Detailed ways
下面结合附图对本发明实施例做进一步描述：Embodiments of the present invention are further described below in conjunction with the accompanying drawings:
实施例1：Example 1:
如图1-2所示，本发明所述电流互感器极性测试仪，包括壳体，壳体包括相互铰接的上壳体1和下壳体2，壳体内设置测试电路，所述测试电路包括供电模块，供电模块并联放电电源3，放电电源3正负极之间串接启动开关4、电位器5和电流互感器一次侧正负接线端子19，电流互感器一次侧正负接线端子19至少设有一组，对应电流互感器一次侧正负接线端子19设置电流互感器二次侧正负接线端子7，测试元件6串接在电流互感器二次侧正负接线端子7之间，所述供电模块、放电电源3、电位器5、启动开关4和电流互感器一次侧正负接线端子19固定在下壳体2上，测试元件6和电流互感器二次侧正负接线端子7设置在上壳体1上。As shown in Figures 1-2, the current transformer polarity tester of the present invention includes a housing, the housing includes an upper housing 1 and a lower housing 2 hinged to each other, and a test circuit is arranged in the housing, and the test circuit Including the power supply module, the power supply module is connected in parallel with the discharge power supply 3, the start switch 4, the potentiometer 5 and the positive and negative terminal 19 on the primary side of the current transformer are connected in series between the positive and negative poles of the discharge power supply 3, and the positive and negative terminal 19 on the primary side of the current transformer At least one set is provided, corresponding to the positive and negative terminals 19 on the primary side of the current transformer, the positive and negative terminals 7 on the secondary side of the current transformer are set, and the test element 6 is connected in series between the positive and negative terminals 7 on the secondary side of the current transformer. The power supply module, the discharge power supply 3, the potentiometer 5, the start switch 4 and the positive and negative terminals 19 on the primary side of the current transformer are fixed on the lower casing 2, and the test element 6 and the positive and negative terminals 7 on the secondary side of the current transformer are arranged on the on the upper case 1.
其中，电流互感器一次侧正极接线端子串接试验开关8，在存在多组电流互感器一次侧正负接线端子19的情况下，可以根据测试需求导通合适的试验开关8进行极性测试；放电电源3采用电容器，对应电容器串接限流电阻9，单只5V10F法拉电容瞬时放电可以达到30A+，本装置6分钟9-11A放电可达100次，充电一次可进行1800次10A左右放电试验，满足试验需要。Wherein, the positive terminal of the primary side of the current transformer is connected in series with the test switch 8, and when there are multiple sets of positive and negative terminals 19 of the primary side of the current transformer, the appropriate test switch 8 can be turned on according to the test requirements for polarity testing; The discharge power supply 3 uses a capacitor, and the corresponding capacitor is connected in series with the current-limiting resistor 9. The instantaneous discharge of a single 5V10F farad capacitor can reach 30A+. The device can discharge 100 times at 9-11A in 6 minutes, and can perform 1800 discharge tests at about 10A after charging once. Meet the test needs.
供电模块包括充电电源15和升压模块16，升压模块16采用现有电路结构，充电电源15和升压模块16之间设置充电开关17，充电电源15可采用充电电池，下壳体2上对应充电电池设置充电接口，升压模块16将充电电源15电压转换为放电电源3所需电压，并对其进行充电。The power supply module includes a charging power supply 15 and a boost module 16. The boost module 16 adopts an existing circuit structure. A charging switch 17 is arranged between the charging power supply 15 and the boost module 16. The charging power supply 15 can be a rechargeable battery. A charging interface is provided corresponding to the rechargeable battery, and the boost module 16 converts the voltage of the charging power source 15 into the voltage required by the discharging power source 3 and charges it.
上、下壳体分别对应设置上面板10和下面板11，为保护测试电路，在上壳体1和上面板10之间以及下壳体2和下面板11之间设置缓冲海绵，上面板10上嵌入测试元件6和电流互感器二次侧正负接线端子7，下面板11上对应供电模块、电位器5和启动开关4分别设置充电按钮12、电位器旋钮13和启动按钮14，充电按钮12与充电开关17相对应，使用时打开壳体，将待测电流互感器的相应接线端子接入上、下面板上，并通过设置的充电按钮12实现充电电源15向放电电源3的充电，启动按钮14按下用于开启放电电源3的放电动作，电位器旋钮13用于调节放电电源3的放电电流。The upper and lower housings are respectively provided with an upper panel 10 and a lower panel 11. In order to protect the test circuit, buffer sponges are arranged between the upper housing 1 and the upper panel 10 and between the lower housing 2 and the lower panel 11. The upper panel 10 The test element 6 and the positive and negative terminal 7 on the secondary side of the current transformer are embedded in the upper part, and the charging button 12, the potentiometer knob 13 and the starting button 14 are respectively set on the lower panel 11 corresponding to the power supply module, the potentiometer 5 and the starting switch 4, and the charging button 12 corresponds to the charging switch 17, when in use, open the housing, connect the corresponding terminals of the current transformer to be tested to the upper and lower panels, and realize the charging of the charging power source 15 to the discharging power source 3 through the provided charging button 12, The start button 14 is pressed to start the discharge action of the discharge power supply 3 , and the potentiometer knob 13 is used to adjust the discharge current of the discharge power supply 3 .
上壳体1和下壳体2之间设置锁扣18，上壳体1外表面设置把手，上、下壳体合上后可以通过锁扣18固定，并通过把手移动壳体，轻便易携；测试元件6采用电流表，根据电流表的指针偏转方向判断电流互感器极性，如果电流表正偏，电流互感器二次接线正确，反之，则不正确。A lock 18 is set between the upper shell 1 and the lower shell 2, and a handle is set on the outer surface of the upper shell 1. After the upper and lower shells are closed, they can be fixed by the lock 18, and the shell can be moved by the handle, which is light and easy to carry The test element 6 adopts an ammeter, and judges the polarity of the current transformer according to the deflection direction of the pointer of the ammeter. If the ammeter is positively biased, the secondary connection of the current transformer is correct, otherwise, it is incorrect.
本发明使用时，将电流互感器一次侧接入电流互感器一次侧正负接线端子19，首先开启启动开关4，由供电模块向放电电源3进行充电，放电电源3通过电位器5连接在电流互感器一次侧正负接线端子19之间，输出可在1-30A调节，满足不同变比电流互感器的极性测试，同时可进行非电容式电压互感器的极性测试，测试元件6连接在电流互感器二次侧正负接线端子7之间，根据测试元件6的测试结果判断电流互感器极性，一目了然，利用电子电路原理，将传统的至少两人测试电流互感器极性转换为一人单独操作，达到省力、省时、安全的目的，提高了工作效率，降低了操作成本。When the present invention is in use, the primary side of the current transformer is connected to the positive and negative terminals 19 of the primary side of the current transformer, the start switch 4 is first turned on, and the power supply module charges the discharge power supply 3, and the discharge power supply 3 is connected to the current through the potentiometer 5. Between the positive and negative terminals 19 on the primary side of the transformer, the output can be adjusted from 1-30A to meet the polarity test of current transformers with different ratios. At the same time, the polarity test of non-capacitive voltage transformers can be performed. The test element 6 is connected Between the positive and negative terminals 7 on the secondary side of the current transformer, the polarity of the current transformer is judged according to the test results of the test element 6. It is clear at a glance, and the traditional at least two people test the polarity of the current transformer is converted to One person operates alone to achieve the purpose of saving labor, time and safety, improving work efficiency and reducing operating costs.
实施例2：Example 2:
本实施例在实施例1的基础上，将电流表更换为发光二极管，根据发光二极管的亮暗判断电流互感器极性，如果发光二极管亮，电流互感器二次接线正确，反之，则不正确。In this embodiment, on the basis of Embodiment 1, the ammeter is replaced with a light-emitting diode, and the polarity of the current transformer is judged according to the brightness of the light-emitting diode. If the light-emitting diode is bright, the secondary wiring of the current transformer is correct, otherwise, it is incorrect.
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| CN107741551A (en) * | 2017-10-11 | 2018-02-27 | 国网宁夏电力公司吴忠供电公司 | 110kV polarity testing device of current transformer |
| CN108226846A (en) * | 2018-04-10 | 2018-06-29 | 国家电网公司 | A kind of generic polar test circuit |
| CN109298280A (en) * | 2018-10-29 | 2019-02-01 | 国网新疆电力有限公司昌吉供电公司 | Current transformer polarity detection device with self-test loop |
| CN110764042A (en) * | 2019-12-03 | 2020-02-07 | 天津送变电工程有限公司 | Polarity tester for secondary circuit of remote multifunctional mutual inductor |
| CN114325507A (en) * | 2022-03-17 | 2022-04-12 | 国网山东省电力公司安丘市供电公司 | CT polarity test device |
| CN114675223A (en) * | 2022-02-22 | 2022-06-28 | 内蒙古送变电有限责任公司 | Portable chargeable type remote control polarity tester for current transformer |
| CN114879117A (en) * | 2022-06-20 | 2022-08-09 | 广东电网有限责任公司 | Polarity test circuit, tester and polarity test method |
| CN115267639A (en) * | 2022-07-25 | 2022-11-01 | 中国二十冶集团有限公司 | A transformer polarity tester |
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Application publication date: 20151111 |