Rockwell Automation 2364,2364E NRU DIODE REPLACEMENT - Manual (Page 5)

NRU Diode Replacement 5
Publication 2364E-5.11 - April 1998
Installing A Diode 1. Verify that the diode is of the correct rating:
2.
3. Apply two or three drops of silicone heatsink oil to each side of the
diode. Spread the oil evenly over the pole face of the diode.
4. Install the diode (with the correct polarity) onto the centering roll pin
on the back heatsink. Refer to Figure 2 for diode polarity informa-
tion. Refer to Table A and Figure 3 for installation polarity.
Important: Be careful not to scratch diode pole faces when installing
diode onto the centering roll pin.
Figure 2
Diode Polarity Details
Table A
Installation Polarity
NRU Output Current (A DC) Diode Rating
180 / 350 450A, 1800V
900 900A, 1800V
1500 / 2000 1960A, 1800V
2500 3000A, 1800V
3000 5000A, 1800V
If your NRU is rated at: Then:
2500A DC or 3000A DC Put the Lexan holder on the diode.
HS1 (-): Left Heatsink HS2 (+): Right Heatsink
Diode Symbol Diode Pole Facing Front
of MCC
Diode Symbol Diode Pole Facing Front
of MCC
D1 - (Cathode) D2 + (Anode)
D3 - (Cathode) D4 + (Anode)
D5 - (Cathode) D6 + (Anode)
-
(Cathode)
+
(Anode)