Alternating current load box

Abstract

The utility model discloses an alternating current load box, which comprises a binding post and a circuit breaker, the circuit breaker is connected with a starting loop and a load loop, the starting loop comprises a starting button and a relay coil, the load loop comprises a load, a capacitor and a normally open relay switch which are connected in series, and the relay coil is in inductive connection with the normally open relay switch. The alternating current load box has the following advantages and effects: the alternating current load box can be used for monitoring a switch-out area, so that remote monitoring of an electric power system is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of load boxes, in particular to an AC load box. Background Art

[0002] A load box (also known as "LOADBANK") is a power detection device, mainly used for load detection and maintenance of generators, uninterruptible power supplies (UPS), and power transmission equipment, and is a tool for periodic testing and maintenance of generator sets and UPS uninterruptible power supplies.

[0003] Under the call for energy conservation and emission reduction in recent years, power rationing has been carried out in an orderly manner in each factory area. After the power is cut off in the factory area, it is necessary to remotely control and monitor the power-off situation of the power system. However, there is no good debugging device that can provide a load in the existing technology, which affects the monitoring of the power rationing situation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an AC load box that can simulate the actual user load and facilitate the remote control and monitoring of the power system.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an AC load box, including a circuit breaker, a starting circuit and a load circuit are connected to the circuit breaker. The starting circuit includes a starting button and a relay coil. The load circuit includes a load, a capacitor and a normally open relay switch connected in series. The relay coil and the normally open relay switch are inductively connected.

[0006] It is further set as: there are two normally open relay switches, and they are respectively arranged at both ends of the load circuit.

[0007] It is further set as: a discharge circuit is arranged in parallel at both ends of the load and the capacitor. A discharge indicator light is arranged on the discharge circuit. Normally closed relay switches are arranged at both ends of the discharge indicator light. The normally closed relay switches are inductively connected to the relay coil.

[0008] It is further set as: an ammeter is arranged on the load circuit.

[0009] It is further set as: a live indicator light is arranged on the circuit breaker.

[0010] To sum up, the utility model has the following beneficial effects: through this AC load box, the power-off area can be monitored, thus facilitating the remote monitoring of the power system. Brief Description of the Drawings

[0011] Figure 1 It is the circuit diagram of the AC load box.

[0012] In the figure: 1. Circuit breaker; 2. Start button; 3. Relay coil; 4. Load; 5. Capacitor; 6. Normally open relay switch; 7. Discharge indicator light; 8. Normally closed relay switch; 9. Ammeter; 10. Live indicator light. Specific embodiments

[0013] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0014] An AC load box includes a box body, on which a terminal block is provided, and a circuit breaker 1 is arranged inside the box body. The circuit breaker 1 is connected with a start circuit and a load circuit. The start circuit includes a start button 2 and a relay coil 3 of the relay, and the load circuit includes a load 4, a capacitor 5 and a normally open relay switch 6 connected in series. The normally open relay switch 6 is inductively connected with the relay coil 3. When the start button 2 is pressed, the relay coil 3 is energized, so that the normally open relay switch 6 is closed by electromagnetic or other means, and then the load circuit is turned on. There are two normally open relay switches 6, which are respectively arranged at both ends of the load circuit.

[0015] As Figure 1 shown, the load 4 and the capacitor 5 are connected in series, and a discharge circuit is arranged in parallel at both ends thereof. A discharge indicator light 7 is arranged on the discharge circuit, and normally closed relay switches 8 are arranged at both ends of the discharge indicator light 7. The normally closed relay switches 8 are also inductively connected with the relay coil 3 by electromagnetic or other means, so as to cooperate with the normally open relay switch 6 and the relay coil 3.

[0016] When the start button 2 is pressed, the normally open relay switch 6 is closed. Due to the inductive connection between the relay coil 3 and the normally closed relay switch 8, the normally closed relay switch 8 is opened, so that the discharge circuit fails. When the start button 2 rebounds, the normally open relay switch 6 and the normally closed relay switch 8 are closed, so that the discharge circuit becomes effective and discharges the load 4 and the capacitor 5. The discharge circuit can release the charge by itself after the AC load box is used, so as to reduce the damage to each circuit in the AC load box.

[0017] An ammeter 9 is arranged on the load circuit. A live indicator light 10 is arranged on the circuit breaker 1.

[0018] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. AC load box, characterized by: It includes a terminal and a circuit breaker. The circuit breaker is connected with a start circuit and a load circuit. The start circuit includes a start button and a relay coil. The load circuit includes a load, a capacitor and a normally open relay switch connected in series. The relay coil and the normally open relay switch are inductively connected.

2. The AC load box according to claim 1, characterized in that: The normally open relay switches include two, which are respectively arranged at two ends of the load circuit.

3. The AC load box according to claim 1, characterized in that: A discharge circuit is arranged in parallel between the load and both ends of the capacitor, a discharge indicator light is arranged on the discharge circuit, both ends of the discharge indicator light are arranged with normally closed relay switches, and the normally closed relay switches are inductively connected to the relay coil.

4. The AC load box according to claim 1, characterized in that: An ammeter is provided on the load circuit.

5. The AC load box according to claim 1, characterized in that: The circuit breaker is equipped with a power indicator light.

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