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Обзор
 ОбзорInfeed systems for 3RA6The infeed system for 3RA6 compact feeders enables far less wiring in the main circuit and, thanks to the easy exchangeability of the compact feeders, reduces the usual downtimes for maintenance work during the plant's operating phase. The infeed system provides the possibility of completely prewiring the main circuit without a compact feeder needing to be connected at the same time. As the result of the removable terminals in the main circuit, compact feeders can be integrated in an infeed system in easy manner (without the use of tools). In addition, the integrated PE bar means it is optionally possible to connect the motor cable directly to the infeed system without additional intermediate terminals. The infeed system for 3RA6 compact feeders is designed for summation currents up to 100 A with a maximum 70 mm² conductor cross-section on the feeder terminal block. The infeed system can be mounted on a standard mounting rail or flat surfaces. 
Infeed system for 3RA6 with 3RA61 direct-on-line starter; 3RA62 reversing starter and 45 mm adapter for SIRIUS motor starter protectors (1) InfeedThe 3-phase infeed is available with screw connection (25/35 mm2 up to 63 A or 50/70 mm2 up to 100 A) and spring-loaded connection (25/35 mm2 up to 63 A). The infeed with spring-loaded terminal can be fitted on the left as well on as the right to an expansion module. The infeed with screw terminal is supplied only with a 3-socket expansion module and permanently fitted on the left side. The infeeds with screw connection enable connection of the main conductors (L1, L2, L3) either from above or from below. The infeed with screw connection is supplied complete with 1 end cover, the infeed with spring-load connection complete with 2 end covers. (2) Three-socket expansion modulesThe expansion module with 3 sockets for compact feeders is available with screw connection and with spring-loaded connection. Expansion modules enable the infeed system to be expanded and can be fitted to each other in any number. Two expansion modules are held together with the help of 2 connecting plates and 1 expansion plug. These assembly parts are included in the scope of supply of the respective expansion module. When the infeed system for 3RA6 is used, the compact feeders (plug-in modules) are easily mounted and removed even when live. Optional possibilities:
(3) Two-socket expansion modulesIf only 2 instead of 3 additional sockets are required, then the 2-socket expansion module is the right choice. It has the same functionality as the 3-socket expansion module. (4) Expansion plugsTwo expansion modules can be connected together using the expansion plug. Flexible expansion of the infeed system is thus possible. (5) PE infeedThis module enables a PE cable to be connected. The PE infeed can be ordered with screw connection and spring-loaded connection (35 mm2) and can be fitted on the right or left to the expansion block. (6) PE expansion plugsThe PE expansion plug is inserted from below and enables two PE bars to be connected. (7) PE pick-offThe PE pick-off is available with screw connection and spring-loaded connection (6/10 mm2). It is snapped into the infeed system from below. (8) Connecting platesTwo connecting plates are used to hold together 2 expansion modules. (9) End coversOn the last expansion module of a row, the socket provided for the expansion plug can be covered by inserting the end cover. (10) 45 mm adapters for SIRIUS motor starter protectorsSIRIUS motor starter protectors size S0 with screw connection can be fitted to the adapter, enabling them to be plugged into the infeed system. Terminal blocksUsing the terminal block the 3 phases can be fed out of the system; this means that single-phase, 2-phase and 3-phase components can also be integrated in the system. After the end cover is pulled out, the terminal block can be plugged onto an expansion module. Expansion plug for SIRIUS 3RV19 infeed systemsAfter the end cover is pulled out, the expansion plug for the SIRIUS 3RV19 infeed system can be plugged onto an expansion module. It connects the infeed system for 3RA6 with the SIRIUS 3RV19 infeed system. Maximum rated operational currentThe following maximum rated operational currents apply for the components of the infeed system for 3RA6:
In a row of several expansion modules, the maximum rated operational current from the 2nd expansion module to the end of the row is 63 A. Proposal for upstream short-circuit protection devicesThe following short-circuit data apply for the components of the infeed system for 3RA6:
1) To prevent the possibility of short-circuits, the cables on the terminal block must be installed so that they are short-circuit resistant according to EN 60439-1 Section 7.5.5.1.2. Заказные данные
Тех. данные
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