Performance test device and method for temperature switch

A technology of temperature switch and testing equipment, applied in circuit breaker testing, measuring electricity, measuring devices, etc., can solve the problems of complicated heating and cooling devices, low testing efficiency, troublesome operation, etc., and achieve intuitive judgment, fast testing, The effect of high accuracy
CN105548868AInactive Publication Date: 2016-05-04LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
Publication Date
2016-05-04
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a performance test device and method for a temperature switch. The device comprises a heating circuit, a temperature detecting circuit and a temperature switch status indicating circuit. The heating circuit comprises a first power supply and a resistance heating band. The temperature switch status indicating circuit comprises an indicating device, a second power supply, and an interface which are in successive series connection, wherein the interface is used for connecting the temperature switch. The temperature detecting circuit comprises a platinum thermal resistor which is pasted on the resistance heating band, and a digital ohmmeter which is connected to the platinum thermal resistor. The digital ohmmeter is powered by the second power supply. According to the method, the heating circuit is used for heating; the temperature detecting circuit is used for determining whether a switching threshold of the temperature switch is reached; when the switching threshold is reached, the temperature switch status indicating circuit is used for determining whether the temperature switch is normal or not. The device and method are easy to operate; the detection is quick and efficient; the detection result is visual and has high accuracy; the device and the method are compatible with multiple types of temperature switches.
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Description

technical field

[0001] The invention belongs to the technical field of electronic testing, and in particular relates to a temperature switch performance testing device and method. Background technique

[0002] The temperature switch is a temperature switch that uses a bimetallic strip as a temperature sensing element. When the electrical appliance is working normally, the bimetallic strip is in a free state and the contacts are in a closed / open state. When the temperature rises to the operating temperature value, the bimetallic strip Metal elements are heated to generate internal stress and act quickly to open / close contacts, cut off / connect the circuit, and thus play a thermal protection role. When the temperature gradually drops to the specified temperature, the contact will automatically close / disconnect and return to normal working condition. Temperature switches are widely used in household appliance motors and electrical equipment, such as washing machine motors, air-...

Claims

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