YSA2 intelligent universal circuit breaker

2013041513120085205YSA2智能型万能式断路器
넳 넲

Product overview
YSA2 series intelligent universal circuit breaker has the characteristics of compact structure, small size, high reliability, short full breaking time and zero arcing. It selects the bus-type intelligent controller as the central component of the circuit breaker, which is used as power distribution, feed or motor protection, so that the line and power supply equipment are protected from overload, short circuit, undervoltage and grounding faults. In addition, it also has the functions of electrical parameter measurement, fault recording, self-diagnosis and equipment management and maintenance.
As the terminal element of the distribution automation system, YSA2 series intelligent universal circuit breaker can realize the "four remote" function on the background host computer through the field bus communication network. The controller power supply adopts the scheme of self-generated power supply and external auxiliary power supply. Even if the auxiliary working power supply fails and loses power, the circuit breaker can reliably start the protection function in case of overload or overcurrent fault. YSA2 series intelligent universal circuit breaker in the selection of ST-3 intelligent controller supporting can also achieve the following functions.
Regional interlock protection function;
Required value measurement and protection function;
Overvoltage/undervoltage protection, overfrequency/underfrequency protection, phase sequence protection, reverse power protection;
MCR and HSICS back-up protection function;
Load monitoring function (current, power);
Harmonic measurement analysis, voltage imbalance measurement, current imbalance measurement.
Leakage type small current grounding protection (in direct grounding system, setting current> 40A, in high resistance grounding system, setting current 1 ~ 5A).
The new undervoltage backup protection device, the action value and time can be set, and the intelligent controller is used as the protection of the circuit breaker, but also as the backup protection of the line short circuit fault. Using self-priming undervoltage scheme, with anti-misoperation function, when
When the grid voltage is lower than 80% Ue, the circuit breaker cannot be closed, and a combination process will not occur due to low voltage.
Support a variety of standard fieldbus communication protocol specifications;
Support USB interface data recording function.

Product Features
Complete specifications and varieties
YSA2 series circuit breakers are of fixed/drawer type, three-pole/four-pole type, with rated currents of 400A, 630A, 800A, 1000A, 1250A, 1600A, 2000A, 2500A, 3200A, 4000A, 5000A, 6300A and other specifications, and various accessories are complete.
High rated short-time withstand current and breaking capacity
contact system
Each phase contact is installed in the insulated chamber, and the contact system adopts the structure of multi-piece contact parallel type, which reduces the inertia of the contact system and improves the high breaking capacity of the circuit breaker.
Operating mechanism
Installed in the center of the circuit breaker, isolated from the main circuit, closed by the spring energy storage mechanism, the closing speed is fast.
Long service life
The number of on/off operations can be up to 10000 times.
No additional arcing distance
The circuit breaker is equipped with an arc extinguishing cover, and the deionization grid is used for double arc extinguishing, with good arc extinguishing effect and zero arcing distance.
Multiple wiring modes
In order to be suitable for wiring and installation of various distribution boards, the wiring mode is divided into horizontal wiring and front wiring behind the board.
Up and down into the line
The main circuit does not need to distinguish between the power supply and the load side, and both the upper and lower incoming lines are applicable.
Intelligent controller classification
Intelligent controller is divided into: ST-M/2M digital display type, ST-3M liquid crystal display type, ST-3H communication function type.

Function Configuration

Product Details

ꄴThe previous one： ST420 Series Microcomputer Line Protection Device
ꄲThe latter one： ST420M Series Intelligent Network Power Meter

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