C.E. Niehoff & Co. N1607/N1611/N3215B/N2013 Troubleshooting Guides - Manual (Page 2)

Page 2 TG56B
Section A: Component Description
CEN N1607 and N1611
Alternator Description and Operation
N1607 500 A 28 V and N1611 570 A 28 V alternators
are internally rectified. All windings and current-trans-
mitting components are non-moving, so there are no
brushes or slip rings to wear out. Energize switch
activates regulator. Field coil is then energized.
Alternator output current is self-limiting and will
not exceed rated capacity of alternator.
N3215B remote-mounted regulator used with these
units:
• regulates alternator voltage so that neither Battery A
signal nor Battery B signal exceeds 30.0 volts.
• is negative temperature compensated according
to switch-selected vehicle battery type. Switch is
factory-set to position 2. Customer selects position
per application
—Position 1 for 6TAGM
—Position 2 for 6TMF
Figure 3 — N1607 and N1611 Alternators with Regulator
Figure 1 — N1607 and N1611 Alternator
Figure 2 — N3215B Regulator Connections

B+ connections on alternator
Interconnect
cable
B– connections on alternator
Both ground cables must be connected to vehicle’s common
ground. An interconnect cable is required as shown if a single
cable to vehicle common ground is used.



Both positive cables must be connected together at alternator or
isolator input when alternator is installed in vehicle and during
operation. Interconnect cable is part of vehicle cabling.
Interconnect
cable

BATTERY ISOLATOR
(SEE PAGE 3 FOR DETAILS)
