Input current signal device of low-voltage reactive power auto-compensation controller
A device and motor technology, applied in the field of input current signal devices, can solve the problems of lack of input current signal and inability to test the low-voltage reactive power automatic compensation controller, and achieve the effect of perfect power-on operation test
Inactive Publication Date: 2015-04-22
江苏龙源先锋电气有限公司
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Problems solved by technology
[0003] In the complete set of electrical equipment manufacturing enterprises, the power-on operation test in the factory test project of the low-voltage reactive power compensation device can only be manually operated because the low-voltage reactive power automatic compensation controller lacks the input current signal that meets the requirements. It is impossible to test the automatic switching working state of switching on or off the capacitor according to the power factor or reactive current lagging or leading in the actual running state
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[0010] The present invention will be further described below in conjunction with the accompanying drawings.
[0011] as attached figure 1 As shown, an input current signal device of a low-voltage reactive power automatic compensation controller is composed of a resistor R, a capacitor C, an inductance L, a universal switch QS and a protective device F. figure 1 The connection forms a unit, which is switched by a universal switch, and can form a series circuit of R and L, a series circuit of R and C, and a circuit composed of R alone. Specifically: if figure 1 The input current signal device composed of resistor R is 200W incandescent lamp, capacitor C is 4μF, 500V metallized capacitor, inductance L is 40W fluorescent lamp ballast, universal switch QS is LW38-16YH3 / 2, and protective device F is RT18- 32 / 4A. The above-mentioned devices are three in total, the input voltage is AC220V, respectively connected to three phases A, B, and C, and the output terminal is connected to a...
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The invention discloses an input current signal device of a low-voltage reactive power auto-compensation controller. The input current signal device is used for an auto-switching function test of a low-voltage complete reactive power compensation device, and comprises a resistor, a capacitor, an inductor, a universal change-over switch, a protective electrical appliance and a connecting conductor. A capacitor and resistor series circuit, a resistor circuit and an inductor and resistor series circuit are formed separately by switching operation of the universal change-over switch. After a power supply is connected, an output end sequentially obtains signal current of power factor lag, power factor 1.0 and power factor lead. According to the input current signal device, when the low-voltage complete reactive power compensation device is tested, an auto-switching function of the low-voltage reactive power auto-compensation controller can be tested, and the movement condition of a control loop is consistent with the actual operation condition, so that a power-on operation test is more perfect.
Description
[0001] technical field [0002] The invention mainly relates to a device for inputting current signals of a low-voltage reactive power automatic compensation controller, especially a device capable of inputting resistive load current, capacitive load current and inductive load current. Background technique [0003] In the complete set of electrical equipment manufacturing enterprises, the power-on operation test in the factory test project of the low-voltage reactive power compensation device can only be manually operated because the low-voltage reactive power automatic compensation controller lacks the input current signal that meets the requirements. It is impossible to test the automatic switching working state of putting in or cutting out the capacitor according to the power factor or reactive current lagging or leading in the actual running state. Contents of the invention [0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the ...
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IPC IPC(8): H02J3/18G01R31/00
CPCY02E40/30H02J3/18G01R31/00
Inventor 丁艺周长华郭燕谈海岗
Owner 江苏龙源先锋电气有限公司