35results about How to "Safe and reliable wiring" patented technology

The invention discloses a power supply connection box of an electric energy meter. The power supply connection box of the electric energy meter comprises an insulating fixed frame, a plurality of groups of connecting terminals are arranged on the insulating fixed frame, wherein the connecting terminals comprise upper fixed electrodes; a plurality of fixed screws which are twisted on the upper fixed electrodes; lower fixed electrodes; a plurality of inlet wire fixed screws which are twisted on the lower fixed electrodes; connecting pieces, upper through holes and lower through holes are formed in the connecting pieces; upper screws, the upper screws are inserted into the upper through holes and twisted into the fixed connecting pieces of the upper fixed electrodes; and lower screws, the lower screws are inserted into the lower through holes and twisted into the fixed connecting pieces of the lower fixed electrodes; insulation layers are arranged between the connecting pieces and the upper fixed electrodes and between the connecting pieces and the lower fixed electrodes, and the insulation layers and the insulating fixed frame are combined into one; and limit blocks which limit the connecting pieces from moving left and right are arranged on the insulating fixed frame. The upper through holes and lower through holes of the connecting pieces are larger than the diameters of the thread portions of the upper screws and the lower screws. The power supply connection box of the electric energy meter has the advantages of being reliable and secure in wire connection, high in working efficiency, and convenient to use.

The invention discloses an easy-plug temperature-sensitive and color-changing secondary terminal, which comprises a terminal, a housing, a plug plugged into the housing, a cable inside the plug, and the cable The connected connector; the plug-in unit, which includes a clamping seat located in the housing, a slider located in the clamping seat, and a buckle that interferes with the slider, and the buckle is connected to the plug Outer side; the connection or disconnection of the secondary terminal of this device only needs to be simply pressed. When the terminal temperature is too high, press the plug into the housing, and when the circuit is broken, you can pull it out by lightly pressing the plug, which is convenient and fast. When the terminal temperature is too high and dangerous, you can quickly detect the discoloration and disconnect the terminal connection, and you can find potential open circuits in time, etc. Hidden dangers, to avoid damage to equipment such as current transformers due to open circuits, and to ensure reliable operation of secondary equipment.

The invention relates to a 220kV capacitive voltage transformer (CVT) charged detector, comprising a current unit, a voltage unit, and a notebook computer, and the voltage unit is used for measuring the PT voltage U of the CVT bus bar MW , the current unit is used to measure the CVT measuring terminal voltage U CVT , flow through C 2 Current I C2 and the current I flowing through the CVT intermediate transformer T . The present invention does not need to perform any form of power failure operation and preliminary reconstruction work on the CVT equipment in the substation. Using high-precision clamp-type current transformers, the wiring is convenient and safe, and the normal operation of the CVT equipment to be tested will not be affected during operation. It can provide a variety of parameters of the CVT to be tested, and can perform multi-parameter evaluation of the overall operating state of the CVT. It has a professional CVT state evaluation system.

The invention relates to a multimedia intelligent sensor network system and a method based on a controller area network (CAN) bus. A multimedia sensor in a network has the action on monitoring audio and video, collecting temperature and humidity and intelligently analyzing data. The network node of the intelligent sensor and an upper computer are connected into a subnetwork system by the CAN bus; further, each upper computer and the server of a monitoring center are networked in an Ethernet mode to form an integral intelligent network system; and the requirements of wide and dispersive node distribution, distributed acquisition and real-time monitoring can be effectively satisfied. Each intelligent node comprises a power supply module, a data acquisition module, a data processing module and a network interface module. An implementation method is characterized in that the functions of setting and inquiring status parameters, monitoring the temperature and the humidity, collecting, coding and transmitting the audio and the video and intelligently analyzing the video according to the communication protocol and the relevant flow are realized according to the data communication protocol and the relevant flow. The multimedia intelligent sensor network with complete function and low cost is built by the small and efficient intelligent node with low cost and low energy consumption.

The invention relates to the photovoltaic generation equipment technology field, and discloses a distributed photovoltaic low voltage grid-connected device. The invention discloses a distributed photovoltaic low voltage grid-connected device, comprising a photovoltaic unit, a grid-connected inverter unit, a low voltage grid-connected cabinet, and an external power grid. The output terminal of the photovoltaic unit is connected to the input terminal of the grid-connected inverter unit; the AC output terminal of the grid-connected inverter unit is connected to the access terminal of the low voltage grid-connected cabinet; the output terminal of the low voltage grid-connected cabinet is connected to the external power grid; the access terminal comprises a housing, a wire clamping mechanism fixedly connected to the housing , a wire connection mechanism, a flipping switch, a wire-removing button installed on the external part of the housing, and a controller installed inside of the housing. The distributed photovoltaic low voltage grid-connected device has advantages of good stability, high firmness, high integration, and easy installation, and is flexible, convenient, safe and reliable in wire connection.

The invention discloses an adapter device for testing the mechanical characteristics of a switch, which comprises upper and lower shells and an adapter circuit arranged inside the shell; the upper and lower shells are connected by a hinge; the adapter circuit arranged inside the shell includes an input Test signal transfer circuit, closing test transfer circuit, two-way opening test transfer circuit and energy storage motor power transfer circuit; the input test signal transfer circuit is composed of the closing signal input jack H, the opening signal The input jack F and the common end jack G1 are composed; the closing test transfer circuit is composed of three jacks A, B, C and a common end jack G2. The two opening test transfer circuits have the same structure ; The wiring of the present invention is reliable, safe and fast, and effectively solves the potential safety hazards that may be caused by the original wiring method.

A cabling rack (10), purification modules (20), an air inlet grating (30), purification module groups (40, 50) and an air conditioner device. The cabling rack (10) comprises a framework (11) and conductive structure pieces (12); the conductive structure pieces (12) are disposed on skeletons (110) between a plurality of adjacent assembling windows of the framework (11); the conductive structure pieces (12) have a plurality of conductive ends which are disposed in the corresponding assembling windows respectively to electrically conduct the purification modules (20) assembled in the plurality of assembling windows; and the purification modules (20) have conductive contacts (201) fittingly assembled with the conductive ends of the conductive structure pieces (12). A plurality of adjacent purification modules (20) can share one electric wire so as to be power-supplied; the number of the electric wires is reduced; the routing and arrangement of the wires are facilitated; the housing of the wires becomes convenient; and the arrangement process of the power supply wires of the purification modules (20) is simplified, so that the installation of the purification modules (20) becomes easier and the potential safety hazard is reduced. All purification modules (20) can be power-supplied simultaneously, so that the purification functions of the respective purification modules (20) are guaranteed to be synchronized; and the purification effect is improved.

The invention discloses a rapid wiring device and an electric appliance accessory. The rapid wiring device comprises an electric appliance shell, a conductive connecting piece and a wire pressing mechanism, the electric appliance shell comprises a wire inserting opening, the conductive connecting piece is connected to the electric appliance shell adjacent to the wire inserting opening; the wire pressing mechanism comprises an elastic element, a wire pressing piece, a base piece and a guide piece, the elastic element is installed on the base piece, the wire pressing piece is pushed by the elastic element and guided by the guide inclined surface of the guide piece, and is moved in a wedge-shaped groove formed by the guide inclined surface and a wire inserted through the wire insertion opening, and the wire is pressed on the conductive connecting piece. The electric appliance accessory comprises an electric appliance body and a wiring device, and the wiring device adopts the rapid wiringdevice. The device is simple and rapid to operate, safe and reliable in wiring, convenient to use and capable of improving the use convenience of the electric appliance accessory.