High performance, high reliability, intelligent, modular and green
high performance. The rated short-circuit breaking capacity and rated short-time withstand current are further improved, and Icu=Ics is realized. For example, Schneider's MT series products have a short-circuit breaking and ultimate short-circuit breaking capacity of up to 150kA.
High reliability. In addition to requiring high performance indicators, the product can be used without derating, and can be used for long-term use without full heat, thus achieving safe operation.
Intelligent. With the advent of ASICs and high-performance microprocessors, the circuit breaker realizes the intelligentization of the trip unit, which greatly enhances the protection function of the circuit breaker, and can realize overload long delay, short circuit short delay, short circuit transient, Grounding, undervoltage protection and other functions can also display system operating parameters such as voltage, current, frequency, active power, reactive power, and power factor on the circuit breaker, and can avoid malfunction under the influence of higher harmonics.
Fieldbus technology. The new generation of low-voltage electrical appliances has realized communication and networking, and can be connected with a variety of open fieldbuses for two-way communication to realize remote control, remote signaling, telemetry and remote adjustment of electrical products. The application of fieldbus technology can not only monitor the quality of power distribution, but also reduce losses. Moreover, the fieldbus technology can realize regional interlocking of multiple circuit breakers in the same regional power grid, realize automation of power distribution protection, and further improve the reliability of the power distribution system. The buses used in the field of industrial fieldbus include Profibus, Modbus, DeviceNet, etc., of which Modbus and Profibus have great influence.
Modular and modular. Combining modules with different functions into modular products according to different needs is the development direction of a new generation of products. For example, ABB's Tmax series, thermomagnetic, electronic, and electronic communicable trip units are interchangeable. The accessories are all modular in construction and can be installed without opening the lid.
Made of green material. The selection, manufacturing process and use process of the product materials do not pollute the environment of the low-voltage electrical equipment and comply with the EU environmental protection directive.
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