beautypg.com

Cen n1450 alternator description and operation – C.E. Niehoff & Co. N1450 Troubleshooting Guides User Manual

Page 2

background image

Page 2

TG57B

Section A: Wiring Diagram

Figure 2 — N1450 Wiring Diagram

Figure 1 — N1450 Alternator Terminals

B+

1 primary

(high load)

output

terminal.

Battery must

be connected

to this terminal

for unit to be

energized.

CEN N1450 Alternator

Description and Operation

N1450 28 V (400 A) alternator is internally rectified.

There are no brushes or slip rings to wear out.

Energize switch activates regulator. Exciter stator

is then energized.
After engine is running, the regulator receives energize

signal. Regulator monitors alternator rotation and pro-

vides field current only when it detects alternator shaft

rotating at suitable speed.
N3227 or N3250 regulator used with some units:
• is negative temperature compensated.
• maintains alternator output voltage at regulated

settings as vehicle electrical loads are switched

on and off.

provides overvoltage cutout (OVCO). Regulator will

trip OVCO when system voltage rises above 32 V for

longer than 3 seconds. OVCO feature detects high

voltage and reacts by disconnecting field and turning

off alternator. Restarting engine or waiting until

system voltage drops below 24 V will reset OVCO

circuit.

B– terminal

B+2 secondary

(low load)

output

terminal