T1689 Technical Manual Rev 07 Specification
MV3000 Air Cooled DELTA DELTA Rectifier Module
Page 49
Power Terminals for GDR872 Rectifier Bridge Module
(GDR872-4401 & GDR872-4601)
When tightening connections support the copper to prevent twisting. Phase terminals (marked R, S and T)
appear at the right-hand side of the module and mate with busbar risers fitted to the DELTA frame.
See Figure 2–17.
Once the module is in place use M10 bolts with plain and spring washers to bolt through the terminals to the
threaded risers. The centre terminal may be rotated for cable connection – see Figure 2–19.
DC link terminals (marked + and -) appear at the front of the module and are connected with four M10 bolts in
to the threaded inserts in the terminal.
The earth (ground) terminal (M10 threaded insert) is located on the lower front face of the module. Protective
earthing of the busbar support bracket (part of the cubicle busbar assembly) is by direct metal contact to the
cubicle cross-rails. Ensure adequate earth continuity of this bracket to earth (ground).
Figure 2–17. – Terminals for GDR872 Rectifier Bridge Module
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