ABB Stykače a nadproudová relé

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Vydal: ABB s.r.o, ELSYNN Autor: ABB ELSYnn

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The risk contacts light welding acceptable.9 applied Infor ambient temperature °C. These two devices MUST coordinated with equipment capable providing protection against short circuit (SCPD: short-circuit protective device): typically circuit breaker with magnetic release only switch fuse. Type short-circuit conditions, the contactor starter does not endanger persons installations and will able operate afterwards. Complete coordination for combination includes the following points: - Selectivity test between the overload relay and the short-circuit protection device SCPD. A com plete data base coordination tables, according IEC 60947-4-1 (EN 60947-4-1), available the ABB Website. ill! I! 1SBC101001C0202 8 . The starter typically made switching device (contactor) and overload protection device (thermal overload relay TOR electronic overload relay EOR). For example: r 1kA for AC-3 A r for IeAC-3 A r for IeAC-3 125 etc. For higher temperatures, apply derating factor according the following rules: - Fuses: factor 0. This offer includes 400 500 690 networks.8 applied Infor ambient temperature °C. • Normal starting means starting tim Difficult starting means accelerating time s. Acceptable extreme dam­ age for the switchgear divided into two types.) General Remarks Applicable all Tables • Each table defined for maximum ambient temperature °C.3 AC-3 that the transient current peak occurring during starting does not lead tripping. • the tables with MCCBs, these are fitted with the magnetic relay alone. - Short-circuit condition tests: • prospective "r" currents These currents depend the rated operational current the starter (IeAC-3) and are given the standard (Table 11). These are not necessarily part the starter. - MCCBs and MCBs: factor 0. The Complete ABB Offer ABB has acquired years experience with respect problems coordination and able make complete offer based tests performed in its qualified laboratories.S. Type short-circuit conditions, the contactor starter does not endanger persons installations and will not able then operate without being repaired having parts replaced. • Each table defined for motor currents: 3-phase motors, 4-pole. Basic Functions Any starter designed to: - start motors, - ensure continuous functioning motors, - disconnect motors from the supply line, - guarantee protection motors against overloads. Setting always carried out 12. • the rated prospective short-circuit current "Iq" This the maximum current that the combination can withstand, for example kA. In the coordination tables, the following short-circuit protection devices are recommended: • Moulded case circuit-breakers (MCCBs) • Miniature circuit-breakers (MCBs) • Switch-disconnector-fuses (aM, and BS) • Manual Motor Starters (M.8 applied Infor ambient temperature °C. - The starter derating factor depends the operating conditions thermal overload relays: Factor 0. Types Coordination IEC 60947-4-1 (EN 60947-4-1) defines two types coordination according the expected level service continuity. Tripping classes thermal O/L relays according IEC 60947-4-1 (EN 60947-4-1): and for types and for types.General Information Coordination with Short-circuit Protection Devices In compliance with standards IEC 60947-4-1 and 60947-4-1, define for the contactors and starters the type, rating and characteristics of the short-circuit protection devices SCPD which allow selective protection against overloads and ensure protection against short circuits.M. Applicable Standards IEC 60947-4-1 (EN 60947-4-1) precisely defines the different points considered order carry out correct coordination