User Manual

Prepower-up68P09255A57-2
Aug 2002
SC4812ET Optimization/ATP Manual Software Release R16.1.x.x
PRELIMINARY
2-5
Table 2-3: AC Voltage Measurements
Step Action
3 Measure the AC voltage from terminal L1 to ground. This voltage should be in the range of nominally
115 to 120 Vac.
4 Measure the AC voltage from terminal L2 to neutral. This voltage should be in the range of nominally
115 to 120 Vac.
5 Measure the AC voltage from terminal L2 to ground. This voltage should be in the range of nominally
115 to 120 Vac.
6 Measure L1 - L2 - should be from 208 to 240 Vac.
CAUTION
If the AC voltages are in excess of 120 V (or exceed 200 V)
when measuring between terminals L1 or L2 to neutral or
ground, STOP and Do Not proceed until the cause of the higher
voltages are determined. The power cabinet WILL be damaged
if the Main breaker is turned on with excessive voltage on the
inputs.
Figure 2-2: AC Load Center Wiring
G = Ground
N = Neutral
L1 = Line 1
L2 = Line 2
G
N
AC to Pilot Beacon
L2
L1
FW00305
2