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SDTKKBS-12 Series
Ring Main Unit

SDTKKBS-12 Series Ring Main Unit


SDTKKBS-12 Series Ring Main Unit is a complete set of electrical equipment that integrates advanced technologies such as electromagnetic voltage/current transformer, electric energy metering module, high-speed fault transient filtering and so on. The SDTKKBS-12 series is composed of load switch unit, circuit breaker unit, bus equipment unit (PT) , centralized DTU, loop-in loop-out unit and etc., and those units are connected by military-grade circular connector. The SDTKKBS-12 series can collect active power, reactive power, power factor, frequency, zero sequence current and zero sequence voltage. The SDTKKBS-12 series also has the functions of line loss measurement, electric energy measurement, circuit voltage identification, voltage/load over limit alarm, short-circuit fault detection and processing, and single-phase grounding fault detection and processing. In addition, the SDTKKBS-12 series ring main unit unit also supports uploading of short circuit/ground fault events to meet the automation needs of the distribution network. The SDTKKBS-12 series can be customized according to your needs.

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Using voltage-time type electromagnetic mechanism or normal spring operating mechanism.

With normal protection, voltage-current, and distributed intelligent FA function.

Using centralized and decentralized network control terminal and clear distribution network automation system, which is intuitive and easy to use.

Using CVT electronic voltage sensing technology.

Using vacuum arc extinguishing, and built-in isolation fracture and vacuum arc extinguishing chamber series asynchronous linkage, which has strong switching ability, and high safety.

Using super capacitor backup power supply to avoid system instability caused by maintenance devices such as batteries.

The circuit breaker/load switch can be assembled in any cabinet, which is flexible and convenient.

The controller takes the line voltage as the criterion, and handles local fault handling through delayed closing and substation protection to realize the complete function of feeder circuit automation, without the need of batteries and relying on the communication and the master station.

Using frequently-operated load switches/circuit breakers to meet the economic operation requirements of distribution network automation.

Using three-phase common cabinet layout, porcelain sheathed cable and cast wire, fully sealed mechanism, military-grade circular connector, and overall fully sealed technology to ensure strong weather resistance, good anti-condensation performance, and maintenance-free for 15 years.

The shell is processed by mold drawing and one-time molding process, with IP67 protection level, easy to seal the box, high air tightness, and high mechanical strength.

The main circuit of the load switch/circuit breaker, the secondary components and the operating mechanism are all sealed in SF6 gas (zero gauge pressure), which is not affected by the external environment, and has stable, reliable, and maintenance-free performance.

* If you need to customize according to your special needs, please contact us.

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