DFW outdoor AC high voltage cable branch box is a new type of power supply equipment specially designed by our company to cooperate with cable users and branches in 10kV power network cable system. Applicable to urban streets, industrial and mining enterprises, residential areas, high-rise buildings, airports, terminals and other places. It has full insulation, full sealing, all weather; anti-flooding, anti-fouling, anti-condensation, anti-corrosion; compact structure, small size, convenient installation, maintenance-free; beautiful appearance, and consistent with the surrounding environment.

DFW outdoor AC high voltage cable branch box is a new type of power supply equipment specially designed by our company to cooperate with cable users and branches in 10kV power network cable system. Applicable to urban streets, industrial and mining enterprises, residential areas, high-rise buildings, airports, terminals and other places. It has full insulation, full sealing, all weather; anti-flooding, anti-fouling, anti-condensation, anti-corrosion; compact structure, small size, convenient installation, maintenance-free; beautiful appearance, and consistent with the surrounding environment.

The terminal of the secondary and converged SMS500 distribution network automation station is mainly used for monitoring the opening and closing station, switch station, cable dividing room, ring network cabinet and power distribution room, low voltage substation and other places.
1) High-precision, wide-range sampling, conforming to the Comtrade 1999 standard for high-precision 128-point recording.
2) Small current single-phase ground fault, using the transient algorithm to solve the single-phase ground fault location and isolation in situ.
3) Deepen the localized feeder automation application, compatible with recloser voltage time type, voltage and current time type, and adaptive integrated type.
4) Access the line loss measurement module to improve the level of management refinement.
5) Communication can be hard and soft encryption, built-in national network professional security chip.
6) The communication protocol is expanded, and it has the function of configuring the national remote unified parameter.
7) Complete cascade channel, 6 RS232/RS485 serial ports that can be switched on site, and 2 RJ45 networks, which can meet complex site requirements.
8) Relevant type tests, one-time integration professional inspection, special inspection of national network, and information security special items have been obtained.

The first-integrated SMS-FDR21 distribution network intelligent feeder terminal is mainly used in distribution network overhead lines to realize monitoring, fault judgment, resection, isolation of fault areas and restoration of power supply to non-fault areas of the feeder circuit column switch; Users need to use wireless, optical fiber and other communication methods to communicate with the power distribution master system for real-time communication.

Its technical features are:
1) Compatible with the requirements of one-time fusion, three-way, two-distance action, and two-distance standard type, and flexibly meet the occasions of off-site coincidence switch, line segmentation, line contact, user demarcation, etc. according to the configuration;
2) High-precision, wide-range sampling, conforming to the Comtrade 1999 standard for high-precision 128-point recording;
3) Small current single-phase ground fault, using transient algorithm, with ground fault local in-situ removal, line selection function and reclosing function, with the selection function based on centralized feeder automation;
4) Deepen the localized feeder automation application, compatible with recloser voltage time type, voltage and current time type, and adaptive integrated type.
5) Access the line loss measurement module to improve the level of management refinement.
6) Communication can be hard and soft encryption, built-in national network professional security chip.
7) The communication protocol is extended, and it has the function of configuring the national remote unified parameter.
8) Meet the requirements of the quality control system of the State Grid distribution equipment: type test, professional testing of distribution terminals, professional testing of one or two integrations, sample delivery before delivery, full inspection of arrival, on-site joint adjustment, and operation evaluation.

The SMS260 series of intelligent protection devices are specially developed for ring network cabinet system applications and can be integrated into circuit breaker cabinets. The device can simultaneously supply external power supply or can directly extract working and tripping energy from the current transformer. It can also achieve complete protection without auxiliary power supply. Overcurrent protection with multiple operating characteristic curves, zero sequence overcurrent Protection and external node direct trip function, it is very suitable for work and outdoor harsh environment, unattended transformer substation.
Technical features:
The high-integration, bus-free microprocessor handles the signal from the current transformer, and the output of the digital logic operation control device is compact. The sealed chassis is maintenance-free and has good anti-interference performance. It is suitable for the operating environment. Rigid, limited installation ring network cabinet system.
Product Features:
1) The whole machine adopts extremely low power design technology to ensure reliable and fast start of protection under any conditions.
2) The device structure is simple and compact, and the installation is convenient and flexible, which is suitable for the compact installation condition of the ring network cabinet.
The self-powered function (powered by the current transformer) can be selected to eliminate the additional burden of installing a DC screen or UPS.
3) The protection configuration is flexible and complete, and various protection functions can be freely invested through control.
4) A variety of IEC standard inverse time curve selection, with high current blocking protection function, suitable for use with a variety of circuit breakers, to solve the problem of power distribution system 扈 protection dead zone.
5) It adopts full Chinese LCD display interface, multi-layer menu display, and human-machine interface is extremely friendly.
6) The large-capacity memory of the device ensures that 200 historical event records are recorded, the recorded content is detailed, and data is not lost when power is lost.
7) The device has a complete dynamic and static self-checking function, and the working condition of each part of the online monitoring device ensures the reliability of the device.
8) High precision originals and processes ensure the accuracy, reliability and long service life of the device.
9) The device provides the RS-485 communication bus interface of the rear terminal, and provides an open communication protocol to the user to facilitate the implementation of the SCADA function.

First, the standard three-station design (optional two stations), in line with the requirements of "GB3804-2017 3 ~ 63kV AC high-voltage load switch"
Second, the mature arc-extinguishing grid design ensures that the closing and arc-extinguishing arc is stable and reliable.
Third, select the disc spring to ensure that the contact pressure is stable and reliable for a long time.
Fourth, the plastic arm is subjected to low temperature experiments to ensure that it does not rupture or crack under low temperature conditions.
5. Reserve the grounding circuit copper bus interface to strengthen the grounding circuit closing and current withstand capability as needed.
Sixth, the grounding switch form is optional

First, the standard three-station design meets the requirements of "GB3804-2017 3~63kV AC high-voltage load switch"
Second, the natural "five-proof" design (the load switch can be connected to the grounding switch after opening; the grounding switch can be combined with the load switch), mechanical and electrical double interlock
Third, the design has interlocking with the lower door panel (close the upper and lower door panels to separate the grounding switch; the grounding switch is closed to open the lower door panel), mechanical and electrical double interlocking
Fourth, the design has interlocking with the operating handle (the electric control loop is automatically cut off after the operating handle is inserted)
5. Redesigned door panel hard interlock, cancel the original steel wire (or plastic wire) design, interlocking is more reliable and stable

First, with reclosing design, in line with the operation timing of the national network breaker, in line with the requirements of "GB1984-2014 high voltage AC circuit breaker"
Second, energy storage, closing, opening logic, designed with mechanical interlocks to ensure correct operation sequence and prevent misuse.
Third, with mechanical interlocking of the isolating switch to ensure that the "five-proof" operation sequence (including forward and reverse interlocking) is met.
Fourth, optional opening operation hole
5. Reserve passive tripping, counters and other extended component positions, humanized design, convenient for retrofit
Sixth, miniaturized design. 325 wide cabinet can also accommodate
Seven, long-life design, stable and trouble-free closing and closing times ≥10,000 times

First, the standard station design, in line with the requirements of "GB1984-2014 high voltage AC circuit breaker"
Second, select Baoguang vacuum tube to ensure that the electrical life is in line with the national network E3 requirements.
Third, the cast human arm is carefully cast to ensure long-term operation and stable mechanical characteristics.
Fourth, large insulation board protection, electric field optimization design, to ensure the power frequency withstand voltage lightning impulse voltage qualified
5. All conductive parts and metal parts are rounded to optimize the electric field design and further improve the reliability of the switch.
Sixth, the grounding switch form is optional.

First, with reclosing design, in line with the operation timing of the national network breaker, in line with the requirements of "GB1984-2014 high voltage AC circuit breaker"
Second, energy storage, closing, opening logic, designed with mechanical interlocks to ensure correct operation sequence and prevent misuse.
Third, with mechanical interlocking of the isolating switch to ensure that the "five-proof" operation sequence (including forward and reverse interlocking) is met.
Fourth, optional opening operation hole
5. Reserve passive tripping, counters and other extended component positions, humanized design, convenient for retrofit
Sixth, miniaturized design. 325 wide cabinet can also accommodate
Seven, long-life design, stable and trouble-free closing and closing times ≥10,000 times

First, the standard three-station design meets the requirements of "GB16926-2009 high-voltage AC load switch fuse combination"
Second, the natural "five-proof" design (the load switch can be connected to the grounding switch after opening; the grounding switch can be combined with the load switch), mechanical and electrical double interlock
Third, the design has interlocking with the lower door panel (close the upper and lower door panels to separate the grounding switch; the grounding switch is closed to open the lower door panel), mechanical and electrical double interlocking
Fourth, the design has interlocking with the operating handle (the electric control loop is automatically cut off after the operating handle is inserted)
5. Redesigned door panel hard interlock, cancel the original steel wire (or plastic wire) design, interlocking is more reliable and stable
6. Shutdown energy storage during the closing process to avoid the over-level trip caused by pre-fault failure
Seven, optional overcurrent trip coil

First, the standard three-station design
Second, the natural "five-proof" design (the load switch can be connected to the grounding switch after opening; the grounding switch can be combined with the load switch), mechanical interlock
Third, the design has interlocking with the lower door panel (close the upper and lower door panels to separate the grounding switch; the grounding switch is closed to open the lower door panel), mechanical double interlocking
Fourth, the redesigned door panel hard interlock, cancel the original steel wire (or plastic wire) design, interlocking is more reliable and stable
5. Use with the circuit breaker mechanism