Chapter 1. FUNCTIONING OF EQUIPMENT

TM 11-6130-243-35

CHAPTER 1

F U N C T I O N I N G OF EQUIPMENT

1-1. Scope

plied to the input circuit consisting of circuit breaker

a. This manual contains direct support, general sup-

switch CB1, the tap board, VOLTAGE ADJUST switch

port, and depot maintenance instructions for Power

S2, indicator lamp DS1, and power transformer T1. The

Supply PP-4606/G (power supply). It includes instruc-

tap board connects the input powerlines to the primary

tions appropriate for troubleshooting, testing, and

windings of power transformer T1. Jumpers are con-

repairing the equipment. It also lists tools, materials,

nected between various terminals on the tap board to

and test equipment required for maintenance, Func-

permit operation of the power supply from either 220-

tional analysis of the equipment is covered in this

or 440-volt alternating current (at) power mains. With

chapter.

circuit breaker switch CB1 set to POWER ON, input

b. The complete technical manual for this equip-

power is applied through the jumpers on the tap board

ment includes TM11-6130-243-12.

and VOLTAGE ADJUST switch S2 to the primary

c. You can help improve this manual. If you find

windings of stepdown power transformer T1 and in-

any mistakes or if you know of a way to improve the

dicator light DS1. The input circuit to transformer Tl is

procedures, please let us know. Mail your letter or DA

wye-connected, the output circuit from the transformer

Form 2028 (Recommended Changes to Publications and

is delta-connected. VOLTAGE ADJUST switch S2 con-

Blank Forms) direct to Commander, US Army

trols application of input power to specific taps of the

Communications-Electronics Command, ATTN:

primary windings of transformer T1. The ac output

DRSEL-ME-MQ, Fort Monmouth, NJ 07703. In either

voltages from the secondary windings of the

case, a reply will be furnished direct to you.

transformer is converted to a pulsating direct current

NOTE

(dc) voltage by full-wave rectifiers CR1 through CR6

For applicable forms and records, see

and filtered by the network consisting of capacitors C1

paragraph 1-3, TM11-6130-243-12.

through C8 and inductor L1. Resistors R1 and R2 com-

prise a load network across the rectifiers. The power

1-2. Index of Technical Publications

supply current and voltage are monitored by DIRECT

Refer to the latest issue of DA Pam 310-4 to determine

CURRENT AMPERES meter M1 and DIRECT CUR-

whether there are new editions, changes, modification

RENT VOLTS meter M2. Resistor R3 is the ammeter

work orders (MWO'S) or additional publications per-

shunt resistor. Resistor R4 is the meter movement series

taining to the equipment.

resistor used to establish the deflection sensitivity of the

ammeter. AMMETER switch S1 (spring-loaded to the

1-3. Block Diagram

(fig. 1-1)

OFF position) connects the ammeter to the output cir-

cuit when depressed to the READ position.

Three-phase, wye-connected primary input power is ap-

Change1

1-1