Starting the Equipment

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.

2-4