The production and use of electric power are divided into six parts: power generation, transmission, substation, power distribution, power consumption and dispatching. Among them, the power distribution link is the closest to daily life except the power supply. Distribution transformers, such as box-type substations, on-pillar substations and other power distribution equipment, will reduce the voltage of 35KV, 10KV, 6KV and other voltage levels to 400V for ordinary users (400V for line voltage and 220V for phase voltage). As the city expands, the distribution network continues to expand, and the connections between power distribution equipment are increasingly complex. Building a safe, reliable, and easy-to-maintain distribution network and reducing power outages have been put on the agenda by grid companies.
How to ensure the safety of power supply? Intelligent grid, which is known as the smart grid is the solution. By adding automatic terminal cabinets in the traditional power distribution network, real-time understanding of the use of power equipment and the power grid can timely solve the load transfer under fault conditions and greatly reduce the power outage time. The development of this technology means a shift from a central control station to a virtual control station solution with the ultimate goal of optimizing, monitoring and maintaining the power system.
First, it is more safe and reliable for HDC anti-open connectors in various scenarios.The Weidmüller HDC anti-opening connector is a product specially developed for grid intelligent customers for power transmission in the secondary circuit of the power system current transformer (CT). In the power system, when the CT is in operation, its secondary circuit is not allowed to open. In other words, when working in CT, the secondary circuit must have measures to prevent open circuit. Once the secondary circuit is opened during operation, a high induced potential is generated on the windings of the secondary equipment, which may cause personal injury or electrical breakdown of the equipment, causing serious safety accidents. At the same time, it may cause the CT core to be overheated and damaged.
In the intelligentization of the power grid, the HDC open-circuit connector can be directly applied to the power distribution or substation automation terminal device body, or can be installed as a transfer terminal on the cabinet or the cabinet. The distribution automation terminal device includes a power distribution terminal (FTU) on the feeder, a distribution transformer distribution terminal (TTU), a ring network cabinet, a power distribution room, an opening and closing station, and a box-type substation remote monitoring terminal (DTU). When the plug and socket of the anti-opening connector are changed from the plugged state to the separated state, the short circuit mechanism is automatically shorted to ensure that the CT secondary circuit does not open, thereby ensuring personal and equipment safety.
The HDC anti-opening connector is mainly used for the application of the CT loop, and solves the automatic short circuit of the CT loop under the condition of the secondary circuit equipment maintenance, as follows:
1. During the insertion process, the female jack on the plug is first connected to the male plug. At this time, the action mechanism has not been touched, and the plug end is kept in a short circuit state.
2. During the further insertion process, the action mechanism triggers the action, and the plug end is internally open. At this time, the male and female pins are completely inserted, and the current forms an electrical circuit through the male and female pins, and the whole circuit has no open state.
3. Finally, the plug is inserted into the locked position and the device works normally.
4. The separation timing action is the opposite.
Based on Weidmüller's mature and widely used RockStar® heavy-duty connector technology, HDC anti-opening products can be customized for 6-core, 4-core and 2-core anti-opening according to customer's special requirements; the normal working current is 40A. Short-time withstand current up to 480A, high reliability. It adopts screw connection and connection mode, and is equipped with special secondary shielding connection points. The field wiring efficiency is high; the rectangular structure is used, the wiring is clear, the error-proof insertion coding is easy and the maintenance is convenient, and it has won unanimous favorable comments from customers in the power industry. In the customer's transformation project, the secondary wiring is reduced by more than 90%, the time of on-site maintenance and replacement is greatly shortened, and the quality and quantity of the customer transformation project are ensured and delivered on time.
Plug-in Terminal Block
It is made of two parts of plug-in connection. One part compresses the wire and then plugs it into the other part, which is welded to PCB. The mechanical principle of the connection bottom and the anti vibration design ensure the long-term airtight connection of the product and the use reliability of the finished product. The two ends of the socket can be equipped with lugs, which can protect the lug to a large extent and prevent the poor arrangement of the lug.
At the same time, this kind of socket design can ensure that the socket can be inserted into the matrix correctly.
The socket can also have assembly and locking positions. The assembly buckle can play a more stable role in fixing to the PCB, and the lock buckle can lock the mother body and the socket after the installation. Various socket designs can be matched with different insertion methods of the parent, such as: horizontal, vertical or inclined to printed circuit board, etc., and different ways can be selected according to the requirements of customers. Either metric wire gauge or standard wire gauge can be selected, which is the most popular terminal type in the market at present.
Plug-in Terminal Block
ShenZhen Antenk Electronics Co,Ltd , https://www.atkconnectors.com