TM 5-6625-2691-13&P
wye, 3 wire reconnect load in Delta. For 240/416 volts, 3
2-5. Starting the Equipment
phase wye, 4 wire and 240 volts, single phase, 2 wire in-
a. Perform the necessary daily preventive mainte-
nance checks and services (para 3-4).
sert plug in high voltage receptacle (fig. 2-2). The
voltage plug must be in the proper receptacle for the
b. Check load requirements.
unit to function properly.
c. Open all ventilating doors, clear away any obstruc-
e. Turn voltage selector switch (fig. 2-1) to "HIGH"
tions blocking air inflow, turn all load switches in
position for 240/416 volts, 3 phase, 4 wire and 240 volts, 1
"OFF" position, and turn variable control adjust full
phase. Turn voltage selector switch to "LOW" position
counterclockwise.
for 120/206 volts, 3 phase, 4 wire, 120 volts, 1 phase and
d. Connect voltage plug (fig. 2-2) to proper recepta-
240 volts, 3 phase.
cle. For 120/208 volts, 3 phase, 4 wire, 120 volts, single
f. Connect power leads to power terminals according
phase, 2 wire or 240 volts, 3 phase, 3 wire, insert plug in
to Table 2-1.
low voltage receptacle (fig. 2-2); for 240 volts, 3 phase
Table 2-1. Input Connections
Wiring
Connections
Single phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connect the L1, L2 and L3 using the copper shorting link. Con-
nect leads for tested equipment securely to L1 and LO.
Three phase, three wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connect leads from tested equipment to L1, L2 and L3.
Three phase, four wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connect leads from tested equipment to L1, L2 and L3. Connect neutral
line to LO.
Ground lead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connect ground lead (fig. 2-2) to an adequate ground.
WARNING
r e n t s may be present and injure
operating personnel.
Do not place hands or tools near the
resistive elements or the fan motor
2-6. Starting
while the bank is energized. High cur-
Refer to figure 2-3 and start the test set.
