220-Volt, Three-Phase 60 Hz Power Connections

TM 11-6130-243-14-2

a. 220-Volt, Three-Phase 60 Hz Power Connections

(b) Connect lead T2 to terminal 12 of phase B

(fig. FO-1, B)

(TB2) and to terminal T2-C of CB1.

(1) Connect lead T1 to terminal 11 of phase A

(c) Connect lead T3 to terminal 12 of phase C

(TB3) and to terminal T3-C of CB1.

(TB1), and to terminal T1-C of CB1.

(2) Connect lead T2 to terminal 11 of phase B

(d) Using the six power transformer jumpers

that are supplied, connect a jumper between terminal 1

(TB2) and to terminal T2-C of CB1.

(3) Connect lead T3 to terminal 11 of phase C

and terminal 7; and a jumper between terminal 6 and

terminal 12 of phase A (TB1), phase B (TB2), and phase

(TB3) and to terminal T3-C CB1.

(4) Using thc six power transformer jumpers that

C (TB3).

(e) Connect terminal 1 of phase A (TB1) to ter-

are supplied, connect a jumper between terminal 1 and

minal 1 of phase B (TB2) and terminal 1 of phase C

terminal 7; and a jumper between terminal 5 and

terminal 11 of phase A (TB1), phase B (TB2), and phase

(TB3) to terminal 1 of phase B (TB2).

(3) 396-volt, three phase, 60 Hz input (fig.

C (TB3).

(5) Connect terminal 1 of phase A (TB1) to

FO-1, D).

(a) Connect lead T1 to terminal 10 of phase A

terminal 1 of phase B (TB2) and terminal 1 of phase C

(TB3) to terminal 1 of phase B (TB2).

(TB1) and to terminal T1-B of CB1.

(b) Connect lead T-2 to terminal 10 of phase B

b. 440-Volt, Three-Phase 60Hz Power Connections

(TB2) and to terminal T2-B of CB1.

(fig. FO-1, E)

(1) Connect lead T1 to terminal 11 of phase A

(c) Connect lead T3 to terminal 10 of phase C

(TB1) and to terminal T1-B of CB1.

(T133) and to terminal T3-B of CB1.

(d) Using the six power transformer leads that

(2) Connect lead T2 to terminal 11 of phase B

(TB2) and to terminal T2-B of CB1.

are supplied, connect a pair of jumpers between ter-

minal 4 and terminal 7 of phase A (TB1), phase B

(3) Connect lead 1-3 to terminal 11 of phase C

(TB3) and to terminal T3-B of CB1.

(TB2), and phase C (TB3).

(c) Connect terminal 1 of phase A (TB1) to ter-

(4} Using the six power transformer jumpers that

minal 1 of phase B (TB2) and terminal 1 of phase C

are supplied, connect a pair of jumpers between

terminal 5 and terminal 7 of phase A (TB1), phase B

(TB3) to terminal 1 of phase B (TB2).

(TB2), and phase C (TB3).

(4) 484-volt, three phase, 60 Hz input (fig.

(5) Conncct terminal 1 of phase A (TB1) 10 ter-

FO-1, F).

minal 1 of phase B (TB2) and terminal 1 of phase C

(a) Connect lead T1 to terminal 12 of phase A

(TB1) and to terminal T1-B of CB1.

(TB3) to terminal 1 of phase B (TB2).

c. Input Power Cable Connection. Connect the

(b) Connect lead T2 to terminal 12 of phase B

four-wire input power cable to the ac power input

(TB2) and to terminal T2-B of CB1.

source (green wire is ground).

(c) Connect lead T3 to terminal 12 of phase C

d. Course Tap Adjustment. The following pro-

(TB33) and to terminal T3-B of CB1.

cedures are provided for input power facilities that vary

(d) Using the six power transformer leads that

from standard 220 or 440, three phase, 60 Hz voltages.

are supplied, connect a pair of jumpers between ter-

(1) 198-volt, three phase, 60 Hz input (fig.

minal 6 and terminal 7 of phase A (TB1), phase B

FO-1, A).

(TB2), and phase C (TB3).

(a) Connect lead T1 to Terminal 10 of phase A

(e) Connect terminal 1 of phase A (TB1) to ter-

minal 1 of phase B (TB2) and terminal 1 of phase C

(TB1) and to terminal T1-C of CB1.

(b) Connect lead T2 to terminal 10 of phase B

(TB3) to terminal 1 of phase B (TB2).

(TB2) and to terminal T2-C of CB1.

e. Fine Tap Adjustment To Raise Output Voltage.

(c) Connect lead T3 to terminal 10 of phase C

If the output voltage is lower than the nominal 28 volts

(TB3) and to terminal T3-C of CB1.

dc and it is necesary to have a higher output voltage,

(d) Using the six power transformer jumpers

change the taps on TB1, TB2, and TB3 as follows:

that are supplied, connect a jumper between terminal 1

Move all taps connected to the fine tap terminals to the

and terminal 7; and a jumper between terminal 4 and

next higher number.

Example.

terminal 10 of phase A (TB1), phase B (TB2), and phase

To raise the output voltage when connected for

C (TB3).

(e) Connect terminal 1 of phase A (TB1) to

198-volt connection as shown in figure FO-1, A; change

terminal 1 of phase B (TB2) and terminal 1 of phase C

the fine tap connections as follows:

(TB3) to terminal of phase B (TB2).

(1) Move tap connected to terminal 7 of phase A

(TB1) to terminal 8 of TB1.

(2) 242-volt, three phase, 60 Hz input (fig.

FO-1,C).

(2) Move tap connected to terminal 7 of phase B

(a) Connect lead T1 to terminal 12 of phase A

(TB1) and to terminal T1-C of CB1.

2-3

Change 1