Page 387 - Contactors_Catalogue

ABB MOTOR CONTROL AND PROTECTION FOR ROLLING STOCK APPLICATIONS 8/3

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Customer assembled motor starting solutions

ABB Expertise Website access:
ABB has acquired years of experience with respect to problems https://www.lowvoltage-tools.abb.com/soc
of coordination and is able to make a complete offer based on
tests performed in its qualified laboratories. This offer covers How to combine assemble and wire starter components
400 V AC, 500 V AC, 690 V AC networks. The section "customer assembled motor stating solutions" in
A complete database of coordination tables, according to this catalog gives the components lists and wiring diagrams to
IEC 60947-4-1 (EN 60947-4-1), and UL 60947-4-1 between the assemble the most typical motor starting solutions.
branch circuit protective device and the motor starter is avail- It covers direct-on-line Starters, reversing starters or star-delta
able on the ABB Website. starters protected with manual motor starters or with thermal
In the coordination tables the following short-circuit protection overload relays for Type I or type II coordination for normal
devices are recommended: starting time.
• Case circuit-breakers (MCCBs) Note:
• Miniature circuit-breakers (MCBs) In order to confirm your starter combination ratings according
• Switch-disconnector-fuses (aM, gG and BS) to ABB's lattest coordination test results, or to see other
• Manual motor starters (MMS). coordination of components please refer to the above
mentioned SOC tool. SOC tool get constant updates and
additions
Select Optimized Coordination tool (SOC)
Selected Optimized Coordination is a web tool for the selection General remarks applicable to all tables
of ABB products to be used in the following applications:
• Motor starting and protection • Each table is defined for a maximum ambient temperature
• Selectivity between protection devices of 40 °C. For higher temperatures, apply a derating factor
according to the following rules:
• Back-up protection • Fuses: factor of 0.8 applied to In for an ambient temperature
• Other devices protection. of 70 °C
• MCCBs and MCBs: factor of 0.8 applied to In for an ambient
In order to guarantee the best performance and the longest temperature of 60 °C
lifetime, devices involved into the applications mentioned • The starter derating factor depends on the operating
above (short-circuit protection devices, contactors, overload conditions of thermal overload relays:
relays, softstarters, …) need to be coordinated. • Factor of 0.9 applied to In for an ambient temperature of 70 °C.
• The coordination among devices cannot be determined • Each table is defined for motor currents: 3-phase motors,
directly: tests in power laboratories shall be carried out to 4-pole
qualify the coordination type at low fault and high fault • Normal starting means a starting time < 2 s. - Difficult
currents, according to IEC or UL standards. starting means an accelerating time 10 s < ts < 30 s
• ABB coordination tables are the results of such tests and • Tripping classes of thermal overload relays according to
represent the ABB offerings in terms of motor starting and IEC 60947-4-1 (EN 60947-4-1): 10A and 10
protection, selectivity, back-up and switch-disconnector • Tripping classes of electronic overload relays according to
protection. IEC 60947-4-1 (EN 60947-4-1): 10E, 20E, 30E selectable
• In Selected Optimized Coordination all available ABB • In the tables with MCCBs, these are fitted with the magnetic
coordination tables are stored and easily accessible. relay alone. Setting is always carried out at > 12.3 Ie AC-3 so
that the transient current peak occurring during starting does
not lead to tripping.

08

1SBC100497S0201 - Rev. B