PV Array Combiner Box ( Monitor current as far as input array and display the value by RS485)

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In large PV system feeded in gridm, it is necessary to set a PV combiner box

between PV module and inverter for the purpose of lessening connecting wires

between PV modules and inverters, easy maintainance, enhancing reliablitity.

Exclusive Features

- Applicable to both indoor and outdoor.

- Numerous PV arrays could be connected in synchronously with fuse at each

circuit.

- With specialized voltage arrester for PV. And both positive and negative pole

have function of lightning protection.

- Use four-pole breaker series connected by postitive and negative pole

separately to enhance DC withstanding voltage value.

- Monitor current as far as input array and display the value by RS485.

- Monitor voltage after combination, and display the value by RS485.

Q: Would like to ask: railway communication, signal, power equipment installation related to mechanical and electrical engineering? If belong to, including specific aspects. Thank you: 3, in fact, including the power of the two professional: power and electrification. Including contact network infrastructure, post, wire rack, remote control, lightning protection system, station lighting intelligent control etc..Belong to the scope of the installation should be the station (communication station) equipment into the test, the basis of processing and installation, equipment installation, commissioning of the single body, the electrical subsystem Unicom debugging, the whole system of professional debugging unicom. And other railway professional with the commissioning test, etc..

Q: The problem of electric power equipment withstand voltageWhy does the pressure decrease when the altitude is high? The air is thin, is not easy to breakdown (vacuum breakdown is not very low atmospheric pressure): Because of the low air pressure in the air at high altitude, at the same voltage

Q: In what way is it confirmed that the destroyer is an electrical device? Identification or what.: Not yet installed agricultural low-voltage lighting circuit, not in the use of electrical equipment. Even if the person who took part in the erection of the wire, it will not cause harm to public safety, its behavior should be qualitative theft.

Q: What is the specific name of the double name of the equipment in the electric work sheet? Know please enlighten me.It would be better if you had a sample ticket.: The double name of equipment refers to the name and number of the equipment.The name of the equipment is Chinese, the number is Arabia. Together is a double name. The same station, will not appear the same name, or the same number, is the only. The only combination of the two can be more accurate.

Q: What is the good rate of equipment determined by the rating of substation equipment: The "system" can easily calculate the depreciation and repair costs of fixed assets in order to determine the economic life of the equipment, the best time to update. As a result of the "system" many functions of the set, so that enterprises can accurately grasp the technical status of the equipment, so as to determine the technical life of the equipment is very useful.

Q: Power transformers and other equipment are what units procurement bidding, all those procedures!: Power company or Power Grid CorpElectric power company refers to the local responsible for the sale of electricity companies, both widely regarded as the local authority.The Power Grid Corp is a company that is in charge of the construction of the power grid, and belongs to a group, but is a separate company.

Q: The company has a number of power equipment to be exported, need to go through the sea, the technical requirements of three, I would like to ask what is the three here? How to check whether the complete sets of components used to do three treatment? Please exhibitions, grateful!: Three refers to the anti moisture, salt spray, anti mildew.According to the complete set of electrical as well as five: (1) to prevent the wrong points, close circuit breaker;2) to prevent the pull and load isolation switch;3) to prevent the electrification (hanging) grounding switch (line);4) to prevent the ground wire (switch) with circuit breaker (isolation switch);5) to prevent straying into the charged interval.

Q: What is the amount of equipment used? Higher profits? Do you have any power generation companies in China?: If the grid equipment. There is a device: power transformers, switches, knife gate, bus, GIS, HGIS, voltage transformers, current transformers, high resistance, lightning arrester, bare wire, line hardware, insulators, towers, power cables, etc.

Q: I would like to ask the power experts, according to the annual additional electricity, installed capacity, how to calculate the amount of the necessary supporting power equipment, etc.?: The question you asked is too big, it belongs to the category of power planning

Q: In power system, the general conditions for the selection of electrical equipment are: Electrical equipment to be as reliable as possible, must be selected according to the normal working conditions and the short circuit conditions for a variety of checks (such as thermal stability check and dynamic stability check)For some equipment also need to check the special items, such as circuit breakers and fuses to check the ability to break the current, the current limiting reactor to check the normal voltage loss and bus residual voltage, etc..

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