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GN Electric Operations continued
Starting Up Dead Westinghouse Locomotive With No
Air in Reservoirs
Preliminary: Close all reservoir drains. Be sure that all
air hose between cabs are properly connected and cut in,
and line up three way cut out cocks on all brake valves
properly, as covered by full instructions in another section
of this book. Then proceed as follows:
(1) Close battery cut out switch, battery control switch,
main control switch in all cabs, cut in one compressor
governor and turn on compressor snap switch in the same cab.
Be sure all other compressor governors and snap switches
are cut out in all other cabs.
(2) Close the compressor cut out switch, (knife switch)
on only one compressor any cab, and wait until main reservoir
has pumped up to 130 lbs., or at whatever point compressor
is set to cut out. Look to be sure that switch control
air gauge on top of switch board shows 70 lbs., before
attempting to do anything else. Use one pump and all batteries
to pump up cab.
(3) Close main exciter field switch, regenerative exciter
field switch, main generator field switch. Raise pantographs
as per instructions. First ring bell or blow whistle
as warning. SAFETY FIRST. Before closing circuit
breaker, give warning as someone may be working on
locomotive circuits. Yell "juice." Then pause before closing
breaker.
(4) Push circuit breaker close button. Closing breaker
energized transformer, and line relay closes.
(5) Close M-G stop switch. Put reverse lever on starting
controller and move it either way from center. This
unlocks the starting controller.
(6) Take first notch on starting controller slowly to allow
starting switches to pick up. Then notch out to speed
up M-G set, at such a rate that battery amperes keep around
200 to 300 amperes and never notch out so fast that the D.C.
bus line volts are driven down below 75 volts. If M-G
set does not start turning by time you have got on fourth
notch, shut off and try again, or go to other cabs and
start them up, then come back and try again. In this way
you will avoid unnecessary delay.
Note: Starting controller notch indicator is on toe, or
front of handle and not on back under handle. That is a
stop block.
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(7) As starting controller is notched out and M-G set
reaches 250 R. P. M., relay SR1 closes. This connects
synchronous motor to transformer at about 950 volts and
accelerates M-G set up to 600 R. P. M., when relay SR2 closes,
exciting field of synchronous motor, and switching
synchronous motor to full voltage tap of transformer 1250 volts
through medium of time delay relay AR. The M-G set is
now synchronized and running at 750 R. P. M. full speed.
Check oil rings on all M-G bearings. Be sure they are
turning.
(8) Starting controller may be shut full off as soon as
SR1 relay closes, and reverse lever removed from it.
(9) Wait until M-G set is fully speeded up (when
synchronous field amperes show 100 to 150 amperes), then
start blowers by raising blower switch to start position,
pause there a couple seconds, and then move blower starting
switch to run position. Look to see all blowers are
running; also blower indicating light and overload indicating
light should be burning normally.
(10) Close traction motor cut out knife switches. There
are four in each cab. The 5004 and 5006 have two on each
side back in middle of cab near regenerative exciter, while
all the other Westinghouse cabs have four cut out switches
all grouped together back in cabinet at middle of left
aisle. Be sure to push these switches in as far as they will
go, as there is an interlock on all of them that must
contact.
(11) Release hand brakes on all cabs, and test air brakes,
both independent and automatic, for operation.
(12) Be sure all air hose are properly coupled and cut
in; also have all three way cut out cocks on brake valves
properly lined up. Both of these articles fully covered by
instructions in this book. Check train line pressure, and
adjust to proper pressure if necessary.
Testing Westinghouse Locomotives Before Leaving
Shop or Terminal
Set engine brake. Move reverse lever to forward position.
Push reset switch to reset position once or twice to
reset any D. C. overload relays that may be tripped, then
pull reset back to run position, (a) Take one notch or
speed controller. D. C. armature ammeter should show
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about 1000 amperes D. C. or one kilo ampere, (b) Move
meter changeover switch to read all the other cabs and
make sure you get a reading from each. (c) Notch out on
field lever until balancing voltmeter shows zero, then press
separate control button all the way in, and pull field lever
full open. The field kilo ampere meter should show around
2500 to 3000 amperes. Check other cabs with meter change-
over switch.
Note: Be sure speed lever is only on first notch all the
while tests are being made, or you will do plenty of
damage.
(d) Shut off both levers, reverse engine and repeat (a),
(b) and (c). If all readings are okay, engine is ready to
go out on run.
Shutting Down Westinghouse Locomotive
Note: Red button or circuit breaker multiple trip if used,
will drop out breakers on all cabs. This should never be
used unless M-G stop switches in all cabs are first pulled
open, except in emergencies.
To shut down a Westinghouse locomotive:
(1) Pull open M-G stop switch.
(2) Open control switch to drop out circuit breaker,
then re-close this switch. A. C. cab lights are extinguished
when breaker is out. Also line kilovolt meter shows zero
voltage.
(3) Repeat (1) and (2) in all cabs, then
(4) Lower pantographs with lowering or down button.
Any cab's down button will lower all pantographs, as long
as control switches are closed.
(5) Release pantograph lowering button to make sure
all pantographs are latched down.
(6) Pull all switches on all the cabs' control boards.
(7) Pull open all compressor cut out switches.
(8) Open all traction motor cut out switches.
(9) Set hand brake. Note: In cold weather also drain
all reservoirs.
(10) Turn out all lights that are burning, close all
windows and doors. Engine is now properly tied up.
Note: Red button on Westinghouse cabs is for
emergency only.
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Westinghouse Motor Generator Sets
Special precautions starting or restarting M-G sets.
(A) When an M-G set kicks out due to any cause whatever,
never touch the M-G starting controller at all while
M-G set is turning, but wait until M-G comes to rest.
(B) If M-G set is running, and a power kickout occurs
due to any cause as A. C. overload tripped, or C. B.
overload tripped, shut off master controller and work reset
switch several times. If it is just the A. C. overload tripped,
M-G will quickly re-synchronize, but in case circuit breaker
overload is tripped (1) first work reset switch. (2) Then
close C. B. trip relay by hand. (3) Pull M-G stop switch
and blower switch. (4) Close circuit breaker with C. B.
close button. (5) Then close M-G stop switch and M-G
set will immediately pick up and re-synchronize at full
speed, unless its speed was below 250 R. P. M., in which
case starting controller to be used as covered. (6) Blower
switch may then be closed and train gotten under way.
Westinghouse Locomotive Compressor Operation
Westinghouse locomotive compressors run from battery
power until after M-G set is started. To prevent running
down batteries while pumping up switch control and main
reservoir air, the following instructions will govern:
(1) In two or three cab locomotives, before starting up
air compressor, be sure all main and control reservoir drain
cocks are closed and that angle cocks of main reservoir
hose at each outside end of cabs are closed. Then place
automatic brake valve on lap position to prevent charging
up train line while operating pumps on battery, or you will
run down battery.
(2) Cut in any one convenient compressor governor cut
out cock under governor, and turn the compressor snap
switch of that cab on. All other cabs in the combination
must have their governor cut out cocks in cut out position,
and their compressor snap switches off.
(3) Close battery cut out, battery control and main
control switches in all cabs. Then close compressor cut
out switch on any one cab only. This is so that only one
pump will be running from all the batteries.
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