AFB arc-free ultra high-speed DC circuit breaker
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ARC-FREE CIRCUIT BREAKER PLUTOn AFB arc-free ultra high-speed DC circuit breaker

AFB AFB arc-free ultra high-speed DC circuit breaker PLUTON is one of the largest manufacturers of electrotechnical equipment in Europe. PLUTON holds key positions in electrical industry and has been successfully working over 25 years, implementing the strategy of intensive growth, development and continuous improvement of products and services quality. More than 70 different types of PLUTON equipment are supplied to various countries of the world and successfully applied in the field of transport, power industry and production sector. PLUTON Group has representative offices in 9 countries...

AFB AFB arc-free ultra high-speed DC circuit breaker AFB is an innovative ultra high-speed DC circuit breaker based on PLUTON experience and advanced technologies. AFB is provided for application in tram, trolleybus, light rail and metro traction substations power distribution systems. Application of arc-free interruption concept in DC circuit breaker provides the following significant benefits in comparison with a circuit breaker with standard switching and arc interruption: / adjustment of fine current interruption setting; / no need for circuit breaker tripping setting calibration; /...

free ultra high-speed DC circuit breaker Compliance with international and European standards AFB is developed and manufactured according to EN 50123-2/IEC 61992-2, EN 50123-3, IEC 60947-3 standards requirements. / high wear resistance / long lifetime / operational costs saving

AFB arc-free ultra high-speed DC circuit breaker Components Vacuum interrupter high switching wear resistance no open arc reduction of circuit breaker work space Electrodynamic tripping drive high-speed contacts opening system interruption speed does not depend on short circuit current value

AFB AFB arc-free ultra high-speed DC circuit breaker Double pole disconnector is applied for connection to switchgear busbar system and for circuit breaker visible galvanic interruption. Disconnector high dynamic stability long mechanical life maintenance-free

Thyristors controls countercurrent generation for secure arc interruption Overvoltage protection components effective overvoltage limitation up to max 2 kV level during even heaviest short circuit interrupting Control and internal monitoring system circuit breaker main units status monitoring line test fine and flexible parameters setting

AFB AFB arc-free ultra high-speed DC circuit breaker Control and internal monitoring system provides complete all-sufficient control of circuit breaker, and fulfills all necessary functions, including protection, as well as remote control and measurement, etc.: 1/ all circuit breaker components and parts operation control; 2/ continuous diagnostics of circuit breaker units; 3/ receipt of control signals from the upper level (via discrete signals and isolated RS-485 interface, Modbus RTU protocol); 4/ built-in power current and voltage measurement system; 5/ output of its own status data and...

AFB AFB arc-free ultra high-speed DC circuit breaker Structurally AFB control system consists of 3 modules: • processor module: provides all data processing intelligent functions; • measurement module: provides power voltage measurement and data transfer to processor module; Circuit breaker can be remotely measured and controlled via isolated RS-485 interface, Modbus RTU protocol. Besides, discrete signals control is available via isolated discrete inputs and outputs with external power supply. • thyristors control module: provides generation of thyristors control pulses.

AFB arc-free ultra high-speed DC circuit breaker current rate of rise (di/dt) exceeds 20 kA/ms setting limit short circuit current rate of rise is 15 kA/ms Protection functions di/dt interruption area time interval zone protection tripping zone overcurrent setting moment of overcurrent setting reaching time required for di/dt setting exceed detection di/dt protection Imax protection Control system has built-in adjustable protection functions: - Imax protection; - di/dt protection. Imax PROTECTION Overcurrent protection is activated upon exceeding of measured current value, setting di/dt...

AFB AFB arc-free ultra high-speed DC circuit breaker A. Switching vacuum interrupter with the main contact closing and opening control system. B. The main contact closing control coil is activated by switching via thyristor to a pre-charged capacitor. C. The main contact opening control coil is rated for operating voltage 1000 V and is activated by switching via thyristor to a pre-charged capacitor. The capacitor charge is constantly monitored by control system. D. The main switching capacitor is rated for operating voltage 1000 V and is activated by switching via power thyristors. The...

AFB AFB arc-free ultra high-speed DC circuit breaker Operating concept Before circuit breaker tripping control system tests: auxiliaries voltage, high-voltage opening and interrupting capacitors voltage, interrupting thyristors and shunt diodes proper functioning. Closing is possible both with preliminary line test and without it. Closing Pre-charged low-voltage capacitors battery provides circuit breaker closing by closing coil actuation with closing thyristor. Operational opening Circuit breaker control system actuates opening thyristor on receiving opening command. When thyristor opens,...

AFB arc-free ultra high-speed DC circuit breaker <25 kA SHORT CIRCUIT CURRENT LIMITATION WITH PEAK CALCULATED VALUE OPENING TIME AFB provides high-speed power contact opening and circuit breaker di/dt tripping before short-circuit current setting reaching. Opening time is < 1 ms. High-speed current circuit tripping under nearby short circuit (f mode according to EN 50123-2/IEC 61992-2) leads to current rate of rise (di/dt), amplitude and actual short circuit current values limitation. This reduces electrodynamic load on conductive parts. Power stored in circuit dissipates in load circuit...