CN220822625U - Two-in-one bus-tie control power supply protection circuit of generator - Google Patents

Abstract

The utility model discloses a two-in-one bus connection control power supply protection circuit of a generator, which comprises a connection control power supply protection mechanism, wherein the connection control power supply protection mechanism comprises a wire inlet frame, a control power supply output module, a control relay, a capacitor, a fuse and a break point, and the wire inlet frame is positioned at one end of the circuit. The utility model sets up through the power protection mechanism of the combined control, through setting up fuse and break point, control it through the control relay, form the time relay, therefore increase the time relay of the accessory on the control relay, the time delay contact of the time relay is strung into the protective circuit, when the generator starts the electricity generation, the protective circuit will not export the power immediately because of the time delay effect of the time relay, the time delay of the time delay relay can be set up, we can set up to above second, avoid the voltage fluctuation time break when the generator starts, when the generator steadily outputs the voltage, the time delay relay electric shock side switches on the power output.

Description

Two-in-one bus-tie control power supply protection circuit of generator

Technical Field

The utility model relates to the technical field of low-voltage complete switch equipment and control equipment, in particular to a two-in-one bus-tie control power supply protection circuit of a generator.

Background

In the existing low-voltage complete switch equipment and control equipment, a generator is often used for supplying power, and when the commercial power fails, the diesel generator is an important supplementary emergency power source under the condition that the UPS battery cannot work for a long time.

For important electric sites, such as data centers, in order to ensure reliable power supply of the generators, two groups of generators are backed up, and two-in-one bus-tie switches are used for supplying power to loads. At the moment, any group of generators are in fault, and the other group of generators can be automatically started to be put into operation. Since all automatic operations are realized by an automatic switching circuit, especially a mains power failure, the switching circuit must be powered by a generator output power supply carried by itself. The voltage of the generator is very unstable just after starting, and the voltage fluctuation is large, and the process takes about 5-10 seconds. The control power supply circuit generally adopted in the industry has no protection function and no delay function, the adopted components are intermediate relays, the bearing current is only 2A, and overcurrent adhesion is easy, so in order to solve the problems, the invention provides a two-in-one bus-tie control power supply protection circuit for a generator, and the circuit can effectively eliminate large impact current when the generator is started to stable voltage output, and often burns fuses or control components.

Disclosure of utility model

The utility model mainly solves the technical problems existing in the prior art and provides a two-in-one bus-tie control power supply protection circuit of a generator.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a two-in female control power protection circuit that allies oneself with of generator, includes allies oneself with control power protection mechanism, allies oneself with control power protection mechanism and includes inlet wire frame, control power output module, control relay, condenser, fuse and break point, the inlet wire frame is located the one end of circuit, control power output module sets up the other end at the circuit, and the inlet wire frame is the main power inlet wire part in this circuit, and it is the important component part that is arranged in receiving main power supply in the electric power system.

Preferably, two circuits are provided, the tail ends of the two circuits are electrically connected, and the power supply output module is controlled to output power to the two circuits through the arrangement of the two circuits in an electrical connection mode.

Preferably, two control relays are arranged to control the two circuits respectively, and the control relays are arranged on the two circuits respectively to replace an intermediate relay and improve the current carrying capacity of the contacts.

Preferably, the capacitor is arranged inside the control relay, the capacitor is electrically connected with the control relay, and the capacitor is arranged in a parallel circuit of the relay and is used for providing auxiliary energy or a filtering function when the relay is operated.

Preferably, the fuse is arranged outside the breaking point, the fuse is electrically connected with the breaking point, the fuse is an automatic power-off switch and is used for protecting a circuit and electrical equipment from being damaged by overcurrent, the fuse needs to be connected with the breaking point of the circuit so as to disconnect the circuit when the overcurrent is detected, prevent the current from flowing, and the fuse core of the A is changed into the A in the prior art, so that the overcurrent protection capability is improved.

Preferably, the break point is arranged at the tail end of the circuit, a control relay safety is arranged in the control relay, a coil and a contact are usually arranged in the control relay, when the coil is activated, the contact can switch states and is used for opening or closing other circuits, namely, the control relay safety is increased, and the time relay break point is added in the circuit, so that the output time of the generator power supply is prolonged, the delay setting is not achieved, and the power supply is not output.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model sets up through the power protection mechanism of the combined control, through setting up fuse and break point, control it through the control relay, form the time relay, therefore increase the accessory time relay on the control relay, the time delay contact of the time relay is strung into the protective circuit, when the generator starts the electricity generation, the protective circuit will not export the power immediately because of the time delay effect of the time relay, the time delay of the time delay relay can be set up, we can set up to above 8 seconds, avoid the voltage fluctuation time break when the generator starts, when the generator steadily outputs the voltage, the time delay relay electrocutes the power output.

2. According to the utility model, through setting the control relays, the conventional common intermediate relays are replaced by two control relays, the bearing current of the contacts is increased to 10A from original 2A, according to professional tests, when the starting time of the generator is about 5-10 seconds and the low voltage is about 120V (line voltage), the magnetic coil load such as an energy storage motor, an opening and closing coil and the like is arranged in a loop, the current can reach about 8A instantly, the intermediate relay of the 2A of the traditional circuit can not bear the current, the adhesion phenomenon often occurs, the rated value of the novel circuit 10A can completely resist the current, the melting core in the circuit is changed to 10A from the traditional 2A, and the tolerance of the original 2A of the whole protection circuit is increased to 10A.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of a time relay time delay closed contact structure of the present utility model;

FIG. 2 is a schematic diagram of a circuit protection fuse of the present utility model;

Fig. 3 is a schematic diagram of a relay structure for controlling on-off of a loop according to the present utility model.

In the figure: 1. a wire inlet frame; 2. a control power supply output module; 3. a control relay; 4. a capacitor; 5. a fuse; 6. the break point.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, a two-in-one bus-bar control power protection circuit of a generator comprises a bus-bar control power protection mechanism, wherein the bus-bar control power protection mechanism comprises a wire inlet frame 1, a control power output module 2, a control relay 3, a capacitor 4, a fuse 5 and an opening point 6, the wire inlet frame 1 is positioned at one end of the circuit, the control power output module 2 is arranged at the other end of the circuit, and is controlled by the control relay 3 through the arrangement of the fuse 5 and the opening point 6 to form a time relay, so that an accessory time relay is added on the control relay 3 of fig. 1, a delay contact of the time relay is connected in series into the protection circuit, when the generator starts to generate power, the protection circuit cannot output power immediately due to the delay action of the time relay, the delay of the delay relay can be set to be more than 8 seconds, the voltage fluctuation time break when the generator starts is avoided, and when the generator stably outputs voltage, and the delay relay is connected with the power output in an electric shock mode.

In one aspect of the embodiment, two control relays 3 replace the conventional intermediate relay, the current born by the contacts is increased from original 2A to 10A, according to professional tests, when the starting time of the generator is about 5-10 seconds and the low voltage is about 120V (line voltage), the load of a magnetic coil is arranged in a loop, such as an energy storage motor, an opening and closing coil and the like, the current can reach about 8A instantly, the intermediate relay of the 2A of the traditional circuit can not bear the current, the adhesion phenomenon often occurs, the rated value of the novel circuit 10A can completely resist the current, the melting core in the circuit is changed from the traditional 2A to 10A, and the tolerance of the original 2A of the whole protection circuit is increased to 10A.

The working principle of the utility model is as follows: when the generator is used, the wire inlet frame 1 enables a main power supply wire inlet part in the circuit to be an important component part for receiving power supply of the main power supply in a power system, the main power supply can be connected to the power system through the wire inlet frame 1, the control power supply output module 2 is used for controlling and regulating output voltage or current of the power supply, the control relay 3 is usually composed of a coil and one or more contacts by regulating the output voltage or current to meet the requirements of different devices or circuits, the coil is an input part of the control relay 3, when the coil receives a current or voltage signal, a magnetic field is generated, the contacts are an output part of the control relay 3, when the coil is activated, the contacts are closed or opened respectively corresponding to the opening and closing of other devices in the circuit, a passive electronic element for storing charge, which is composed of a dielectric medium (called a dielectric medium or a dielectric body) between two conductors (4) is connected to the power supply, when the capacitor 4 is connected to the power supply, the electrode is connected to the power supply, the current is formed in the current-carrying circuit, the current is a fuse wire 5 is formed in the current-carrying circuit, the current-carrying circuit is opened or the current-carrying circuit is broken, the current is normally in a fuse-carrying state, the fuse-carrying state is formed in the current-carrying circuit is broken, the fuse-carrying state is opened, the fuse state is broken, and the fuse state is broken current is normally occurs in the fuse state is broken, and the current is in the circuit is broken, the circuit is in the current state is broken, and the current is broken, the current is broken is in the circuit is broken. While when the break point 6 is in the open state, current cannot flow, and the circuit is in the open state. All the electric equipment in this scheme all carry out the power supply through external power supply.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. Two-in-one bus-tie control power protection circuit of generator, including alliing control power protection mechanism, its characterized in that: the combined control power supply protection mechanism comprises a wire inlet frame (1), a control power supply output module (2), a control relay (3), a capacitor (4), a fuse (5) and an opening point (6), wherein the wire inlet frame (1) is positioned at one end of a circuit, and the control power supply output module (2) is arranged at the other end of the circuit.

2. The generator two-in-one bus-tie control power protection circuit of claim 1, wherein: the circuit is provided with two, and the tail ends of the two circuits are electrically connected.

3. The generator two-in-one bus-tie control power protection circuit of claim 1, wherein: the control relays (3) are arranged in two, and are used for controlling the two circuits respectively.

4. The generator two-in-one bus-tie control power protection circuit of claim 1, wherein: the capacitor (4) is arranged in the control relay (3), and the capacitor (4) is electrically connected with the control relay (3).

5. The generator two-in-one bus-tie control power protection circuit of claim 1, wherein: the fuse (5) is arranged outside the break point (6), and the fuse (5) is electrically connected with the break point (6).

6. The generator two-in-one bus-tie control power protection circuit of claim 1, wherein: the break point (6) is arranged at the tail end of the circuit, and a control relay safety is arranged in the control relay (3).