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

The invention discloses a junction box for a switch mechanical characteristic tester, comprising at least two test wire coils, test wire outlets corresponding to the test wire coils, a motor, a leakage protector, a direct current inlet wire plug and an alternating current inlet wire plug, wherein the test wire coils are provided with a clutch device for resetting wire coils; the clutch device is driven by the motor; the test wire coils are coiled with test connecting rods connected with the direct current inlet wire plug and the alternating current inlet wire plug by a change-over switch; and the circuits in the junction box are all arranged on a printed circuit board. The junction box is arranged between a middle switch cabinet and a mechanical property tester of a switch to protect an instrument, the damaging possibility of the test instrument is greatly lowered, and the test efficacy is obviously improved. Adverse factors, such as easiness of wrong wiring, short circuit, damages of instrument terminal blocks because of repeatedly disassembling and connecting and the like in the electrical test of the equipment can be eliminated. The junction box for the switch mechanical characteristic tester is convenient to carry, and is safe and correct to wire, and no test wire is left in the equipment.

The invention relates to a 220kV capacitive voltage transformer (CVT) electrified detector which comprises a current unit, a voltage unit and a laptop. The voltage unit is used for measuring the voltage UMW of a bus PT of the CVT. The current unit is used for measuring the voltage UCVT of the measuring end of the CVT, the current IC2 flowing through C2 and the current IT flowing through a middle transformer of the CVT. Power failure operation and earlier-stage modification work of any form are not required to be conducted on CVT devices in a transformer substation. A high-accuracy pincer-like current transformer is utilized, wiring is convenient and safe, and normal operation of the CVT devices to be detected is not affected during work. Various parameters of the CVT devices to be detected can be provided, multi-parameter evaluation can be conducted on the whole operation state of the CVT, and a special CVT state evaluation system is provided.

The invention discloses a ceiling lamp. The ceiling lamp comprises a lamp panel, a lamp cover, a light-emitting assembly, an installing disc and a lamp holder, the lamp holder is installed on the installing disc, and a first metal contact piece and a second metal contact piece are arranged on the lamp holder; at least two arc hanging holes are formed in the installing disc, and the arc length of each hanging hole is greater than or equal to the perimeter of 1 / 4 of the installing disc; a groove part is formed in the installing disc, the installing disc and the lamp panel are provided with clamping structures, and an installing groove is formed in the lamp panel; the lamp panel is fixed to the installing disc in a rotary clamping mode, the installing disc is partially embedded in the installing groove, and the lamp cover and the lamp panel adopt separating installing structures; the light-emitting assembly is located between the lamp panel and the lamp cover and fixed to the lamp panel and comprises a light-emitting body, a first contact head and a second contact head, and the first contact head and the second contact head are correspondingly connected with the positive pole and thenegative pole of the light-emitting body. The ceiling lamp not only is simple in operation and convenient to dismantle, but also can eliminate the hidden safety danger caused by the wiring problem.

A wiring fixing device comprises a connecting rod, a first fastener used for fixing a cable and a second fastener used for fixing the connecting rod, wherein the connecting rod is fixed between supports spanned by the cable. The wiring fixing device is convenient and fast to install, safe, reliable, firm and stable.

The invention relates to the technical field of forklift lithium batteries, particularly to a forklift lithium battery pack parallel topological structure, which comprises a high-voltage box, a firstbattery box and a second battery box, wherein the high-voltage box is provided with two battery positive interfaces, two battery negative interfaces, two charging positive interfaces, two charging negative interfaces connected in parallel, two charging communication ports, a discharging negative interface, a whole vehicle communication port, two discharging relays connected in parallel, two charging relays connected in parallel, two fuses connected in parallel and a DCDC module. According to the invention, a mode of first parallel connection, then series connection and then parallel connectionis adopted, and the control logic is adopted, so that forklift battery charging and discharging are more balanced, the difference between battery packs is reduced, only one set of management system is needed, the production cost is low, the system control logic is relatively simple, wiring is safe, the unbalanced sparking phenomenon does not exist, use is flexible and convenient, and large-current charging can be achieved; and by adopting the control method, the charging and discharging of the battery are more balanced.

The invention discloses a comprehensive relay protection experimental device and method for a power system. The device has the advantages of high integration level, small occupied area and cost saving; and the device comprises a PC, a switch, an industrial personal computer and a plurality of experimental platforms, each experimental platform comprises a time relay characteristic experimental device, a current relay characteristic experimental device, a voltage relay characteristic experimental device and a power relay characteristic experimental device, the time relay characteristic experimental device, the current relay characteristic experimental device, the voltage relay characteristic experimental device and the power relay characteristic experimental device respectively upload test data to the industrial personal computer through RS485 bus, and the industrial personal computer sends the received data to the PC through the switch.

The invention discloses a convenient wiring structure of an LED lamp, and relates to the technical field of illumination. According to the key technology that a lamp is provided with a wiring terminal, a pressing handle is organically matched with the wiring terminal, and wiring is convenient, a surface cover is connected with a lens in a glue bonding mode, the lower plate face of a double-face circuit board is fixedly connected with an LED lamp, and the upper plate face of the double-face circuit board is fixedly connected with the bottom face of the wiring terminal; and a button, a positivewiring hole, a negative wiring hole and a negative serial connection hole are formed in the wiring terminal, the pressing handle and a supporting column are arranged on a rear cover, a surface cover,the rear cover sleeved with a double-sided circuit board, the wiring terminal and an LED lamp assembly and an elastic piece are fixedly connected through screws, and a power source, a wire, the positive wiring hole, the negative wiring hole, the negative serial connection hole, the double-sided circuit board and the LED lamp are electrically connected. The convenient wiring structure of the LED lamp is used for lighting. The convenient wiring structure is scientific and reasonable in design, simple and ingenious in structure, stable and reliable in effect, low in cost and convenient to popularize.

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 adhesive wiring device. The wiring device comprises two wiring boards arranged in parallel. A conductive block capable of contacting each other is respectively arranged on the side faces of the two wiring boards. Each wiring board is coaxially and fixedly connected with the conductive block by a loop of self-adhesive tape, and the thickness of the self-adhesive tape is larger than the thickness of the conductive block. A conductor electrically connected to the conductive block is arranged inside each terminal block, and the conductor is electrically connected with ametal tube communicating with the outside. The wiring device has the advantages of quick wiring, safety and easy operation.

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 discloses an easy-to-plug thermochromic secondary wiring terminal, which comprises a wiring terminal, a shell, a plug plugged with the shell, a cable positioned in the plug, and a connecting piece connected with the cable. A plugging unit comprises a clamping seat located in the shell, a sliding block located in the clamping seat and a buckle abutting against the sliding block, and the buckle is connected to the outer side of the plug. Connection or disconnection of the secondary wiring terminal of the device only needs simple pressing. Pressing entry during connection is realized, popping out by slightly pressing in the case of disconnection is realized, wiring of the secondary wiring terminal is more reliable and safer; during connection, the plug is pressed into the shell;during disconnection, the plug can be pulled out by pressing the plug slightly, convenience and quickness are achieved, discoloration can be quickly perceived and connection of the terminal is disconnected when the temperature of the terminal is too high and dangerous, potential current open circuit and other hidden dangers can be found in time, a current transformer and other devices are prevented from being damaged due to open circuit, and then reliable operation of secondary devices is ensured.

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.

The invention discloses an emergency alarm button device with a fingerprint and RFID card swiping alarm releasing function, and relates to the technical field of safety protection of supervision places. The mobile terminal comprises a surface cover, an NFC antenna, a fingerprint module and a main control board, wherein a microswitch, the NFC antenna, the fingerprint module and the main control board are all arranged in the surface cover. The alarm eliminating tool is convenient to carry in places with low prevention requirements, is safer than a mechanical key, and can distinguish different permissions; an authorized operator swipes a fingerprint for alarm elimination in a place with a relatively high prevention requirement, so that identity discrimination is effectively carried out, and an alarm elimination tool does not need to be additionally carried; pOWERBUS two-wire system bus communication is adopted, so that the installation cost is reduced, the installation steps are simplified, and fault points are reduced; the rectifier is used for supplying power, so that a power line does not need to distinguish anodes and cathodes, and wiring is more convenient and safer; a red-green double-color state indicating lamp is used, red and green are turned on at the same time to be yellow, and more than ten states can be indicated in cooperation with normally-on, flickering, alternate flickering and quick-flash and slow-flash.

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.