CN201364817Y - Capacitor internally provided with fault output device - Google Patents

Abstract

The utility model discloses a capacitor with a built-in fault output device. The fault output device is arranged in the capacitor. The fault output device is composed of a sensing unit and an output unit. The sensing unit is connected with a fault detection device to collect a fault signal of the capacitor and output by the output unit. The sensor unit and the output unit are packaged as a whole; compared with the prior art, the utility model is installed on a device with NCS (neutral line unbalanced current detection) or NVS (neutral point unbalanced voltage detection) Inside the parallel capacitor of the detection device, it can directly determine which capacitor has an internal fault. The output unit is electrically connected to the sensing unit and installed inside the capacitor, which can reduce the detection components around the capacitor and bring convenience to production and use. At the same time, it greatly reduces the potential safety hazards when using the equipment.

Description

Capacitor with built-in fault output

technical field

The utility model relates to a capacitor, in particular to a capacitor with a built-in fault output device.

Background technique

In the prior art, when detecting internal faults in parallel capacitors, based on the capacitor itself, as shown in Figure 1: to detect the output of parallel capacitors, more than three parallel capacitors need to be combined for detection and output, and the detection results obtained in this way are not accurate To judge which of the shunt capacitors fails; at the same time, the above-mentioned fault detection output needs to be connected to the detection element and the output device on the periphery of the capacitor, which brings inconvenience to the use and also puts forward new requirements for the industry.

Utility model content

Aiming at the deficiencies in the prior art, the utility model provides a capacitor with a fault output device. When a fault occurs in a certain capacitor, the N.C.S (neutral line unbalanced current detection) or N.V.S (neutral point unbalanced current detection) or N.V.S (neutral point unbalanced Voltage detection) The detection device can quickly convert the detected current or voltage into a passive contact signal, so as to judge the failure of a specific capacitor.

The technical scheme that the utility model adopts is:

The capacitor with a built-in fault output device includes a fault detection device, which is characterized in that: a fault output device is provided in the capacitor, and the fault output device is connected to the fault detection device to collect a fault signal of the capacitor and output it.

The fault output device is composed of a sensing unit and an output unit, the sensing unit is connected to the fault detection device and the fault signal of the collecting capacitor is output by the output unit.

The sensing unit includes an inductor and a sensor, and the inductor and the sensor are electrically connected and packaged as a whole.

The output unit is composed of connecting wires, terminals and contacts and packaged as a whole.

The capacitor is equipped with a neutral line unbalanced current detection device or a neutral point unbalanced voltage detection device.

Compared with the prior art, the utility model can directly judge the occurrence of internal faults because the output device is installed inside the capacitor with N.C.S (neutral line unbalanced current detection) or N.V.S (neutral point unbalanced voltage detection) detection device. Which one is the specific capacitor? After the output unit is electrically connected with the sensing unit, it is installed inside the parallel capacitor, which can reduce the peripheral detection components of the capacitor and bring convenience to production and use.

Description of drawings

Fig. 1 is a schematic circuit diagram of capacitor detection fault output in the prior art.

Fig. 2 is the circuit schematic diagram of the utility model detection N.C.S;

Fig. 3 is the circuit schematic diagram of the utility model detection N.V.S;

Fig. 4 is another schematic diagram of a circuit for detecting N.V.S of the present invention.

Detailed ways

The utility model will be further described below according to the accompanying drawings:

The capacitor with built-in fault output device of the utility model mainly includes a capacitor, and a fault detection device and a fault output device are arranged in the capacitor, and the fault detection device is used to detect the state of the capacitor; after the fault detection device is connected with the fault output device, the fault output device will Signal output, the fault output device is composed of a sensing unit and an output unit. The sensing unit and the output unit are packaged as a whole and installed in a capacitor; the sensing unit collects the fault signal of the capacitor through the fault detection device and outputs it from the output unit.

As shown in FIG. 2 , the sensing unit includes an inductor 101 and a sensor 102 , and the inductor 101 is electrically connected to the sensor 102 . The fault output device is connected with the N.C.S (neutral line unbalanced current detection) detection device to output passive contact signals.

As shown in Figure 3, the sensing unit includes an inductor 101 and a sensor 102, the inductor 101 is electrically connected to the sensor 102, and the output unit is composed of a connecting wire 103, a terminal 104 and a contact 105; Balanced current detection) The detection device is connected to output a passive contact signal.

Figure 4 is another circuit schematic diagram for detecting N.V.S. The fault output device cooperates with the N.V.S (neutral line unbalanced current detection) detection device to output passive contact signals.

Since the output device is installed inside the capacitor with N.C.S (neutral line unbalanced current detection) or N.V.S (neutral point unbalanced voltage detection) detection device, the output signal can directly determine which capacitor has an internal fault. The output unit and the sensor unit are electrically connected and then packaged and installed inside the capacitor, which can reduce the peripheral components of the capacitor and bring convenience to production and use.

Claims (5)

1, the capacitor of built-in fault output device comprises failure detector, it is characterized in that: be provided with fault output device in the capacitor, fault output device connects to be exported after failure detector is gathered the fault-signal of capacitor.

2, according to the capacitor of the described built-in fault output device of claim 1, it is characterized in that: described fault output device is made up of sensing unit and output unit, and sensing unit connects the fault-signal of failure detector collection capacitor and exported by output unit.

3, according to the capacitor of the described built-in fault output device of claim 2, it is characterized in that: described sensing unit comprises inductor and transducer, inductor be packaged into an integral body after sensor electrical is connected.

4, according to the capacitor of the described built-in fault output device of claim 2, it is characterized in that: described output unit is made up of connecting line, binding post and contact and is packaged into an integral body.

5, according to the capacitor of the described built-in fault output device of claim 1, it is characterized in that: be provided with neutral line unsymmetrical current in the described capacitor and detect or neutral point unbalance voltage checkout gear.

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