Junction device for electric energy meter
A technology for a wiring device and an electric energy meter, applied in the field of electric energy meters, can solve the problems of being easy to fall off, unsuitable for batch use, reducing wiring efficiency, etc., and achieve the effects of increasing the wiring area, simple structure, and improving wiring efficiency.
Inactive Publication Date: 2014-09-10
深圳深宝电器仪表有限公司
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Problems solved by technology
Since the contact resistance is at the micro-ohm level, ordinary multimeters cannot measure it. For measurement, more complicated methods or high-precision testers such as digital bridges are required. This kind of test is not suitable for mass use on site.
In addition, due to the lack of a limiting structure for the lower screw in the prior art to cooperate with the fixed cover, it is easy to fall off during the installation process, which greatly reduces the wiring efficiency
Method used
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Embodiment Construction
[0021] Attached below figure 1 to attach Figure 4 The technical solutions of the present invention are further described through specific implementation methods.
[0022] A wiring device for an electric energy meter, comprising an end button box and a terminal 1, the end button box including a terminal base 11 and a fixed cover 2 matched with the terminal base 11, the terminal base 11 and the fixed cover 2 A connection terminal 1 is provided in the cavity between them, and the connection terminal 1 includes two adjacently arranged ring terminals 5, a conductive post 4 with one end axially penetrating through the cavity of the ring terminal 5, and a conductive post 4 arranged on the ring terminal. 5. The top is used to press the hexagon socket head screw 6 of the access wire 3 arranged at the bottom of the conductive column 4, and the outer peripheral surface of the head of the hexagon socket head screw 6 is provided with a first annular protrusion 7. The first annular protr...
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The invention discloses a junction device for an electric energy meter. A terminal box comprises a terminal base and a fixing cover, and wiring terminals are arranged in a cavity between the terminal base and the fixing cover. Each wiring terminal comprises annular terminals, a conductive column and an inner hexagonal fine thread screw, wherein the annular terminals are arranged adjacently, the inner hexagonal fine thread screw is arranged on the tops of the annular terminals and used for tightly pressing switching-in wires arranged at the bottom of the conductive column, and a first annular protrusion is arranged on the outer circumferential surface of the head of the inner hexagonal fine thread screw and matched with the inner bottom surface of the fixing cover. The wiring terminals arranged inside the cavity between the terminal base and the fixing cover are stable and reliable in wiring, the wiring area is increased, and wiring resistance is effectively lowered; meanwhile, the inner hexagonal fine thread screws are provided with the first annular protrusions and are not prone to disengagement after the first annular protrusions are matched with the fixing cover, and wiring efficiency is improved. The junction device is simple in structure, stable and reliable in wiring and convenient to install, the wiring area can be increased, and wiring resistance can be effectively lowered.
Description
technical field [0001] The invention relates to the technical field of electric energy meters, in particular to an electric energy meter wiring device. Background technique [0002] The electric energy meter is an instrument used to measure the accumulated value of electric energy in a certain period of time. It is an electric energy measuring and accumulative measuring instrument under the condition of low voltage (not exceeding 500 volts) and current below 100A. From the wiring mode, it can be divided into single-phase access and three-phase access. When the voltage or current range exceeds the requirements, it is necessary to use the conversion of the metering transformer to connect to the electric energy meter. Usually, the terminal button box of the electric energy meter adopts the double-screw embedded wiring method. The contact area between the terminal button box of the electric energy meter and the connected wire varies greatly in this design, and the resulting con...
Claims
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Inventor 张敏唐义锋魏兴龙于庭泽
Owner 深圳深宝电器仪表有限公司