CN203616444U - An arrearage trip switch detection apparatus - Google Patents

Abstract

The utility model discloses an arrearage trip switch detection apparatus. A power supply input terminal of the detection apparatus is in parallel connection with a power supply indication lamp via a double-pole single-throw switch. The power supply indication lamp and a node of the double-pole single-throw switch are connected with one end of a switch control connecting line sequentially via a wire pressing clamp and a trigger air switch. The other end of the switch control connecting line is suspended in midair. Each of the two ends of the power supply indication lamp is connected with a fixing contact pin. Each of the two ends of the switch state indication lamp is connected with a mobile contact pin through a conductive wire. The apparatus can detect whether an arrearage trip switch is qualified, so that the safety and the reliability of the usage of the arrearage trip switch are raised.

Description

Arrears trip switch detection device

technical field

The utility model relates to the technical field of switch detection devices, in particular to a detection device for an arrears trip switch.

Background technique

Air switch, also known as air circuit breaker, is a switch that will automatically disconnect as long as the current in the circuit exceeds the rated current. The air switch is a very important electrical appliance in the low-voltage power distribution network and electric drive system. It integrates control and multiple protection functions. In addition to completing the contact and breaking of the circuit, it can also protect the short circuit, severe overload and undervoltage of the circuit or electrical equipment, and can also be used to start the motor infrequently. When the line is generally overloaded, although the overload current cannot make the electromagnetic tripper operate, it can make the heating element generate a certain amount of heat, prompting the bimetal sheet to bend upward when heated, and push the lever to disengage the hook and the lock, and the main contact The head is broken and the power is cut off. When a short circuit or severe overload current occurs in the line, the short circuit current exceeds the instantaneous trip setting current value, and the electromagnetic tripper generates a large enough suction force to attract the armature and hit the lever, so that the hook rotates upward around the shaft seat and the lock is released , The lock will break the three pairs of main contacts under the action of the reaction force spring, and cut off the power supply.

The arrears trip switch, also known as the shunt delay circuit breaker, is an important part of the quantity control and fee control card meter billing system. During normal operation, the trip terminal of the electric energy meter is charged, and the switch is closed to supply power to the user. When the user's electricity bill is over, the trip control terminal of the electric energy meter loses power, and the arrears trip switch loses excitation and the trip coil loses excitation, so that the tripper trips, the switch trips, and the power supply to the user is stopped. Only when the paid power purchase card is inserted into the energy meter, the arrears trip switch can be closed again. The existing arrears trip switch has problems such as uneven quality, lack of detection means, and blank detection technology, which leads to a high failure rate of the arrears trip switch after installation, which brings great inconvenience to users.

Utility model content

The technical problem to be solved by the utility model is to provide an arrears trip switch detection device, which can detect whether the arrears trip switch is qualified, and improves the safety and reliability of the arrears trip switch.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: an arrears trip switch detection device, which is characterized in that: the power input end of the detection device is connected in parallel with the power indicator light through a double-pole single-throw switch, The power indicator light and a node of the double pole single throw switch are connected to one end of the switch control connection line through the pressure clamp and the trigger air switch in turn, the other end of the switch control connection line is suspended, and the two ends of the power indicator light are respectively connected to a The fixed contact pin is connected with a moving contact pin at both ends of the switch state indicator light with a wire respectively.

Preferably, the front end of the power input terminal is connected to an AC power supply.

Preferably, a leakage protector is provided between the power input end and the double pole single throw switch.

The beneficial effects produced by adopting the above-mentioned technical solution are: the detection device sends a trip signal to the arrears trip switch by simulating the power outlet of the user electric energy meter and the trip signal control, judges whether the action of the arrears trip switch is normal, and detects the arrears Whether the trip switch is qualified or not improves the safety and reliability of the use of the arrears trip switch. The detection device has the following characteristics: small size, easy to carry and use, modular structure, easy to expand, low cost, low maintenance difficulty; stable and reliable structure, long service life; simple operation, obvious detection results; built-in leakage protector , safe to use.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is a schematic diagram of the utility model;

Among them: 1. Double pole single throw switch 2. Power indicator light 3. Crimping clip 4. Fixed contact pin 5. Moving contact pin 6. Trigger air switch 7. Switch status indicator light 8. Switch control connection line 9. Leakage protection 10. AC power supply.

Detailed ways

As shown in Figure 1, a kind of arrears trip switch detection device, the power input end of described detection device is connected in parallel with power indicator light 2 through double-pole single-throw switch 1, and the power indicator light 2 and double-pole single-throw switch 1 One node is connected to one end of the switch control connection line 8 after the wire clamp 3 and the trigger air switch 6 in turn, the other end of the switch control connection line 8 is suspended, and the two ends of the power indicator light 2 are respectively connected with a fixed contact pin 4, The two ends of the switch state indicator light 7 are respectively connected with a moving contact pin 5 with a wire, and the device uses an AC power supply 10. In order to improve the safety of use, a Leakage protector 9.

When using the pre-installation detection device of the arrears trip switch, connect the two fixed contact pins and the two movable contact pins to the four terminals of the arrears trip switch respectively, and connect the floating end of the switch control connection line to the arrears trip switch. control terminal connection. Push the double-pole single-throw switch to the "on" position, start the test power supply, and the power indicator light is on at this time. Push the trigger air switch to the "on" position, and push the tested arrears trip switch to the "close" position. At this time, the status indicator light of the arrears trip switch is on. If the fee trip switch is changed from the "on" position to the "off" position, and the status indicator light of the arrears trip switch is off, it can be judged that the quality and function of the arrears trip switch are good, which meets the actual requirements of the site, and the arrears trip switch can be installed to the user. In other cases, it should be judged that the quality and function of the arrears trip switch is poor, which does not meet the actual requirements of the site, and the arrears trip switch should not be installed at the user.

The detection device is controlled by simulating the power outlet of the user electric energy meter and the trip signal, and sends a trip signal to the arrears trip switch to judge whether the action of the arrears trip switch is normal, detect whether the arrears trip switch is qualified, and improve the arrears trip switch. Safety and reliability of use. The detection device has the following characteristics: small size, easy to carry and use, modular structure, easy to expand, low cost, low maintenance difficulty; stable and reliable structure, long service life; simple operation, obvious detection results; built-in leakage protector , safe to use.

In this paper, specific examples are used to illustrate the principle of the utility model and its implementation. The description of the above embodiments is only used to help understand the method of the utility model and its core idea. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the claims of the utility model . the

Claims (3)

1. An arrears trip switch detection device, characterized in that: the power input end of the detection device is connected in parallel with the power indicator light (2) through the double pole single throw switch (1), and the power indicator light (2) is connected to the double One node of the pole single throw switch (1) is connected to one end of the switch control connection line (8) after passing through the pressure clamp (3) and the trigger air switch (6), and the other end of the switch control connection line (8) is suspended in the air. The two ends of the power indicator light (2) are respectively connected with a fixed contact pin (4), and the two ends of the switch state indicator light (7) are respectively connected with a moving contact pin (5) by wires. 2. The detection device for arrears trip switch according to claim 1, characterized in that: the front end of the power input terminal is connected to an AC power supply (10). 3. The detection device for arrears tripping switch according to claim 1, characterized in that: a leakage protector (9) is provided between the power supply input end and the double pole single throw switch (1).