MFC Kit Instructions
4.0 Installation
20
In line reactors where current exceeds the terminal block capability, copper flag terminations
are used.
Figure 10: Copper Flag Terminations
In larger line reactors, all the terminals extend from the front of the reactor and are constructed from
copper bus bar terminals.
Figure 11: Larger Reactors with Copper Flag Terminations
Wiring
TCI does not recommend running drive input and output wires in the same conduit.
Wire Sizing
Wires need to be sized based on current to be carried, wire insulation temperature rating, panel
temperature rating, bundling of wires, and appropriate codes and standards. Wire size between
drive and filter reactor as well as the filter reactor and the load are based on line current. Wire size
in the branch circuit is based on rated capacitor circuit current. If the capacitor wiring is split into
separate capacitor branches, the current each branch carries is proportional to the value of
capacitance in each branch.
Additional Cooling Considerations
Reactors generate heat during operation due to harmonic currents in the coil wire and magnetic
fields in the core. Reactors constructed to Class R 220°C insulation system would be expected to
have surface temperatures as hot as 195°C. Cooling of reactors needs to be considered during
enclosure packaging design, otherwise these hot temperatures will get out of control and result in
filter failures due to overheated reactors.
Customers should use filter power dissipation values to ensure enclosure forced convection
capacity is sufficient to maintain maximum enclosure temperatures to 50°C or less. Sine wave
reactors with rated currents from small values up to 480 A have been successfully used with natural
convection cooling in TCI’s MotorShield product line. Natural convection designs require significant
Содержание MFC A
Страница 2: ......
Страница 5: ...2 Replacement Parts 56 Factory Contacts and Tech Support 56 ...
Страница 60: ......