Alpha Technologies AMPS80 HP - Manual (Page 20)

Doc. #: 026-069-B0 Rev F 18
3. AC and DC Power Configurations
This section lists the power configurations available with the AMPS80 system and defines the terminology
used throughout this manual.
3.1 Power System Configuration Terminology
3.1.1 120Vac Single Phase
A single phase system is 120Vac from L1 to N (neutral).
3.1.2 120/208Vac 2-Pole
The term 120/208 2-POLE is used through-
out this manual to identify the “2-pole from a
3-phase supply” configuration such as L2 to
L3 shown in Figure 7.
3.1.3 3-Phase
Each phase conductor carries the same
current, 120 degrees out of phase with each
other as shown in Figure 7.
3.1.4 120/240Vac Split Phase
The term 120/240Vac SPLIT PHASE is used
throughout this manual to identify the “3-wire/
2 legs from a single phase supply” configura-
tion shown in Figure 6.
L2
N
L1
240V
12
0V
12
0V
L2
N
L3
L1
208V
208V
208V
12
0V
120V
120
V
Figure 6 —
Split Phase from a Single phase supply
Figure 7 —
2-Pole from a 3-phase supply
3.1.5 120/208Vac 3-Phase
Each phase conductor is 120 degrees out of phase with the other, as shown in Figure 7. All three phases (3-
pole) plus the neutral are in use.