summary:

AB-3S-12 series circuit breaker is a column intelligent vacuum circuit breaker developed by our company by integrating domestic and foreign technologies, taking the advantages of many families, adopting new design concepts, and using scientific and technological means. This product can be used as a switch on the 10kV side and 10kV outgoing line of the main transformer of the 35kV substation, or as a switch on the pole of the distribution network. Combined with various control units produced by the company, it can easily realize control, protection, measurement and communication. It is a device to realize the automation and miniaturization of the distribution network.

Structural characteristics of AB-3S-12 series circuit breaker:

◆ The magnetic actuation (permanent magnet) mechanism is adopted to reduce the number of components and the closing power greatly, which is stable and reliable without regular maintenance. Ensure the operation sequence of recloser (min t1-

0.3s closing and opening t2-3s closing and opening t3-3s closing and opening - locking);

◆ External epoxy is used as external insulation material, with light weight, long service life, good weather resistance, no oil, no SF6, meeting environmental protection requirements;

◆ Adopt excellent DSP chip, which integrates control, protection, measurement and communication, so that the system has advanced design and super functions;

◆ Adopt integrated sensor technology to realize online monitoring of the device;

◆ Adopt synchronous closing technology to realize synchronous closing of circuit breaker and effectively suppress operating overvoltage and inrush current;

◆ Flexible communication mode, support general wireless packet service (GPRS), support Chinese and English SMS;

◆ The sampling and fast FFT transformation of up to 128 points per week provide high-speed and high-precision data from the fundamental wave to the 19th harmonic for line measurement and protection;

◆ With fast protection function, the distribution network can automatically complete the isolation and recovery of power supply without the cooperation of the main station, greatly improving the reliability of power supply;

◆ It is not necessary to add configuration to realize online judgment of single-phase grounding fault and give warning or trip as required;

◆ Temperature measurement and temperature correction technology are adopted to make the device achieve high accuracy under various temperature conditions;

◆ The specially designed power management module can provide automatic conversion of two auxiliary power incoming lines (AC110V or AC220V), monitor the battery and control the battery charging voltage and charging and discharging power supply;

◆ Friendly interface, full Chinese display and convenient setting;

◆ It is made of stainless steel, without rust, and is truly maintenance-free.