CN204758644U - Experimental quick termination of zero magnetic flow current transformer - Google Patents

Abstract

The utility model relates to a quick wiring device for zero-flux current transformer test, which comprises a power conversion module, a DC current generation module, a wiring mode conversion module, and a test line. The power conversion module is connected with the DC current generation module, and the power conversion module is It is connected with a DC power output plug and an AC power plug, and the DC current generation module is connected with a DC current lead wire; one end of the test line is provided with a primary equipment end plug, and the other end is provided with a secondary electronic module end plug; the wiring mode conversion module is equipped with a conversion The input end of the switch and the wiring mode conversion module is connected with a measuring instrument wiring plug, and the output end is connected with a zero magnetic flux CT secondary electronic module wiring plug. The advantages are: simple structure, convenient operation, so that the zero-flux CT test is not limited by the location, the test wiring is convenient, and it is not easy to damage the tested equipment, which overcomes the shortcomings of the previous zero-flux CT test, such as complicated wiring, long time-consuming, and limited by the test location .

Description

A fast wiring device for zero-flux current transformer test

technical field

The utility model belongs to the field of electric equipment test, in particular to a quick connection device for zero magnetic flux current transformer test.

Background technique

At present, the zero-flux current transformer CT is widely used in DC converter stations. For example, the primary equipment of CT needs to be connected to 3000A DC, and the secondary electronic module of CT needs 110V DC power supply. When testing equipment and secondary electronic modules, it is necessary to move the heavy equipment to be tested to the DC panel room, take the DC power from the DC panel, and at the same time take the AC power from the AC socket. The test wiring is complicated and the site is chaotic. Change the wiring The method is time-consuming, and it is easy to connect wrong wires or cause electric shocks. What is more serious is that this type of CT equipment is expensive, and repeated disconnection of the terminals of the tested equipment is likely to cause equipment damage. The zero-flux CT test device.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide a quick wiring device for zero-flux current transformer test, which is simple in structure and easy to operate, so that the zero-flux CT test is not limited by the location, the test wiring is convenient, and it is not easy to connect. damage to the equipment under test.

In order to achieve the above object, the utility model is realized through the following technical solutions:

A zero-flux current transformer test quick wiring device, including a power conversion module, a DC current generation module, a wiring mode conversion module, a DC power output plug, a DC current lead wire, and a test line, and the power conversion module is connected to the DC current generation module , the power conversion module is connected with a DC power output plug and an AC power plug, and the DC current generation module is connected with a DC current lead; one end of the test line is provided with a primary equipment end plug, and the other end is provided with a secondary electronic module end plug; the wiring mode is converted The module is provided with a changeover switch, the input end of the wiring mode conversion module is connected with a measuring instrument wiring plug, and the output end is connected with a zero magnetic flux CT secondary electronic module wiring plug.

The power conversion module is a WYK series DC stabilized voltage and stabilized current power supply.

Compared with the prior art, the beneficial effects of the utility model are:

The structure is simple and the operation is convenient, so that the zero-flux CT test is not limited by the location, the test wiring is convenient, and the tested equipment is not easy to damage, which overcomes the shortcomings of the previous zero-flux CT test, such as complicated wiring, time-consuming, and limited by the test location.

The test of the primary equipment and the secondary electronic module of the zero-flux CT can be completed at the same place, no need to look for a place with a DC power supply, and only one AC power supply can meet the test requirements; the test plug can be realized with the tested equipment The terminals are docked to avoid damage to the equipment caused by repeated disconnection of the wiring; the wiring mode conversion module can realize the plug connection between the tested equipment and the test instrument, and there is no need to cut off the power or change the wiring when measuring different parameters, just flip the switch on the module Switch to measure the required parameters. It overcomes the shortcomings of the previous zero-flux CT test, such as complicated wiring, long time-consuming, and limited by the test site.

Description of drawings

Figure 1 is a schematic diagram of the wiring of the power conversion module.

Figure 2 is a schematic diagram of the structure of the wiring mode conversion module.

Figure 3 is a schematic diagram of the test line structure.

In the figure: 1-Power conversion module 2-DC current generation module 3-Wiring mode conversion module 4-AC power plug 5-DC power output plug 6-Zero flux CT secondary electronic module wiring plug 7-Measuring instrument wiring plug 8 -Secondary electronics module side plug 9-Primary equipment side plug 10-DC current leads.

Detailed ways

The utility model is described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the utility model is not limited to the following embodiments.

See Fig. 1-Fig. 3, a zero-flux current transformer test quick wiring device, power conversion module 1, DC current generation module 2, wiring mode conversion module 3, DC power output plug 5, DC current lead 10, test line , the power conversion module 1 is connected with the DC current generation module 2, the power conversion module 1 is connected with a DC power output plug 5 and the AC power plug 4, and the DC current generation module 2 is connected with a DC current lead 10; one end of the test line is provided with a primary The equipment end plug 9 is provided with a secondary electronic module end plug 8 at the other end; a changeover switch is provided on the wiring mode conversion module 3, and the input terminal of the wiring mode conversion module 3 is connected with a measuring instrument wiring plug 7, and the output terminal is connected with a zero magnetic flux CT secondary electronic module wiring plug 6.

Among them, the power conversion module 1 is a WYK series DC stabilized voltage and stabilized current power supply, and a WYK100V100A DC stabilized voltage and stabilized current power supply is used here. DC current generating module 2 adopts DH1716A-13 constant voltage and constant current power supply.

A method for using a fast wiring device for a zero-flux current transformer test. The AC power plug 4 provides AC power for the power conversion module 1 and the DC current generation module 2. The power conversion module 1 converts the AC power into a DC power, and outputs the plug through the DC power supply. 5 provides 110V DC for the secondary electronic module of zero-flux CT, and the DC current generating module 2 provides analog current for the primary equipment of zero-flux CT through the DC current lead 10, that is, the DC current lead 1010 is wound around the primary zero-flux current transformer Simulate 3000A DC current on the device, plug 9 at the primary device end and plug 8 at the secondary electronic module end are respectively connected to the primary device and secondary electronic module of zero magnetic flux CT, and the wiring plug 6 of the secondary electronic module of zero magnetic flux CT converts the wiring mode Module 3 is connected to the zero-flux CT secondary electronic module, and the measuring instrument wiring plug 7 is connected to the measuring instrument; after the wiring is completed, the AC power plug 4 is inserted into the AC power supply to start the test, and the wiring mode conversion module 3 is operated during the test The changeover switch on the instrument can change the wiring mode and measure the required data.

Claims (2)

1. A zero-flux current transformer test fast wiring device, characterized in that, power conversion module, DC current generation module, wiring mode conversion module, test line plug, DC power output plug, DC current lead, test line, power supply The conversion module is connected with the DC current generation module. The power conversion module is connected with a DC power output plug and an AC power plug. The DC current generation module is connected with a DC current lead wire; The terminal plug of the secondary electronic module; a changeover switch is arranged on the wiring mode conversion module, the input end of the wiring mode conversion module is connected with a measuring instrument wiring plug, and the output end is connected with a zero magnetic flux CT secondary electronic module wiring plug. 2. A fast wiring device for zero-flux current transformer test according to claim 1, characterized in that, said power conversion module is a WYK series DC stabilized voltage and stabilized current power supply.