Modular functional plug suitable for plug-in type test junction box and use method

Abstract

The invention provides a modular functional plug suitable for a plug-in test junction box, and relates to the field of field operation and maintenance of an electric energy metering device applying a plug-in test junction box. The modular functional plug comprises a wiring module, a closing module, a current module, a voltage module, a partition module and a relay module, wherein the current module, the voltage module and the partition module are connected with a plug-in type test junction box through plugs arranged on the current module, the voltage module and the partition module, the current module, the voltage module, the partition module and the relay module are provided with the plugs and sockets, the wiring module is provided with a socket, the closing module is provided with a plug, at least one of the current module, the voltage module, the partition module and the relay module can be selected or not according to actual needs, and the current module, the voltage module, the partition module and the relay module are connected into a whole through the plugs and the sockets after being arranged according to the actual needs. According to the invention, through the separated design, the module arrangement sequence is selected as required, so that the requirements of different measurement scenes are met, the maintenance cost of the plug is reduced, the weight of equipment carried by workers is reduced, and the expandability and replaceability of the plug are improved.

Description

technical field [0001] The invention relates to the technical field of on-site operation and maintenance of electric energy metering devices using a plug-in test junction box, in particular to a modular functional plug suitable for a plug-in test junction box. Background technique [0002] The electric energy metering device, especially the electric energy metering device connected through the transformer, is the direct basis for large and medium-sized electric power customers to conduct electric energy transactions. Therefore, necessary on-site inspection and testing must be carried out to confirm its key performance, and the due metering device should be rotated according to certain rules. [0003] In order to avoid the impact of on-site testing and rotation work on customers' continuous and reliable power consumption, the current on-site inspection, voltage drop test, and power meter rotation are all carried out without power failure. To achieve this requirement, the curr...

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Problems solved by technology

[0003] In order to avoid the impact of on-site testing and rotation work on customers' continuous and reliable power consumption, the current on-site inspection, voltage drop test, and power meter rotation are all carried out without power failure. To achieve this requirement, the currently commonly used method is to install The test junction box includes two types of crimping type and plug-in type. The crimping type belongs to the traditional structure, which is complicated to operate and has high risks. The plug-in type has great advantages in safety and convenience, and has gradually been widely recognized. and application, but the existing plug-in test junction box needs to independently use three kinds of functional plugs for matching groups during on-site operation and maintenance work, thus causing the following problems or deficiencies:

[0004] ①The existing on-site inspection plugs, meter replacement plugs, and pressure drop test plugs are relatively similar in appearance, and the on-site staff are easy to confuse, and there are situations where they cannot work due to miscarrying plugs, and carrying them all will greatly increase on-site operation and maintenance Equipment burden;

[0005] ②Due to the characteristics of the structural design of the functional plug, its connecting piece lacks protection, and there is inevitably a risk of bending or breaking due to external forces during transportation, loading and unloading. However, the existing functional plug adopts an integral design. If a connecting piece is damaged, the entire plug needs to be replaced, which increases the difficulty and cost of equipment maintenance;

[0006] ③At present, electric energy metering devices are increasingly undertaking non-metering functions, so their work requirements and on-site operation and maintenance work tend to be diversified and expanded. Traditional integral functional plugs use built-in curing circuits, which are difficult to adapt to new tests The requirements for projects and new operation and maintenance work, the scalability and freedom are relatively low, and it is difficult to adapt to the new situation of electric energy metering operation and maintenance

[0007] To sum up, the integral functional plug used in combination with the plug-in test junction box currently has certain deficiencies in terms of ease of use, ease of maintenance, functional diversity, and scalability. In order to solve the above technical problems, this The invention provides a modular functional plug suitable for plug-in test junction boxes

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