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: Power equipment are 10KV or less, there is a business license, will be issued by the electrical installation (repair, test) power facilities license five and above qualifications, you do not need a safety production license ah? Urgently needed: Install the network need to debug the SERC issued installation (repair, test) power facilities permit five level or above qualification this debugging can be tender, can be a one-time construction units and the tender requirements: business license qualification certificate (grade 3) safety production license, the SERC issued Denso (repair, test) power facilities permit five level or above qualification

Q: Maintenance of electrical equipment, security measures to ensure that what: 6, is strictly prohibited live moving, demolition, relocation and maintenance of electrical equipment and lines.7, all cables are not allowed to have a fire joint, tear, leakage phenomenon, such as cable break, should be used with equal effectiveness hot cold patch, allowed to send electricity.8, all electrical equipment is strictly prohibited fire operation, maintenance of electric equipment, should be properly protected, not smashed on the explosion-proof surface, ensure the explosion-proof surface finish and explosion-proof performance, and paint oil or vaseline to evenly.9, timely maintenance control, switch control must hit the "off" position, set off switch handle, and remove the clutch.

Q: Recently went out to do the test, do not know the difference between the two tests: Preventive testing is to test or test equipment periodically and regularly. For example, once a month, 3 months or a few times a year of preventive testing or testing, to exclude the existence of hidden dangers...

Q: When a fault occurs in power system, the circuit breaker tripping device near fault: When a fault occurs in power system, the circuit breaker tripping device near the fault, in order to reduce the power outage, this is the relay protection ().A, selective B, reliability C, sensitivity D, non selectivity

Q: No concentrator can be copied directly: Although no concentrator can directly meter reading, but reading efficiency, cost and data integrity rate and data sharing will be greatly affected, so the power metersreading general will use concentrators or negative control terminal equipment.

Q: Part of the rated voltage of the power equipment is marked 10.5kv, and this is similar to the label 10KV power equipment what is the difference?Consulted a lot of teachers, but it is said that this is the old and new two methods, I would like to ask what is the basis of this, it is best to have a national standard for reference: 4, the average rated voltageRegulations, average rated voltage is about 1.05 times the network voltage, and appropriate rounding

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: What are the customer groups faced by power intelligent equipment?Products such as electric capacitor reactive power control (capacitor module), reactive power compensation controller, the series of electric power meter, active filtering equipment, power monitoring system, energy management system, operating system and DC power system accessory products.: If the capacitor is connected in series on the line, the line reactance is compensated and the parameters of the circuit are changed. Series compensation can reduce the loss of line voltage, improve the terminal voltage level, reduce the power loss and power loss, and improve the transmission capability.4 power capacitors include phase shifting capacitors, electric heating capacitors, voltage equalizing capacitors, coupling capacitors, pulse capacitors, etc.. Phase shifting capacitor is mainly used for compensating reactive power to improve the power factor of the system; the electrothermal capacitor is used to improve the power factor of intermediate frequency power system; equalizing capacitor in parallel with the general circuit breaker on fracture pressure; coupling capacitor is mainly used in electric power communication, measurement, control and protection of transmission line the capacitor is used for pulse; pulse circuit and DC high voltage rectifier filter.

Q: Is there a warranty period for power equipment?: Warranty period is not specified, is determined by the relevant test standards

Q: In power system, the general conditions for the selection of electrical equipment are: Rated conditions, such as voltage and current, thermal stability, dynamic stability check, the most basic

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