OPERATION AND MAINTENANCE MANUAL TM-146 · 1997. 10. 3. · OPERATION AND MAINTENANCE MANUAL TM-146...
Transcript of OPERATION AND MAINTENANCE MANUAL TM-146 · 1997. 10. 3. · OPERATION AND MAINTENANCE MANUAL TM-146...
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OPERATION AND MAINTENANCE MANUAL TM-146
:. with
illustrated Parts List
for
PART NO. 430467
STATIC VOLTAGE REGULATOR
MOTOR GENERATOR DIVISION
HOBART BROTHERS COMPANY
TROY, OHIO 45373
U.S.A.
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OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
SUBJECT
OPERATION
DESCRIPTION
INSTALLATION
OPERATION
MAINTENANCE
DESCRIPTION/OPERATION
TROUBLE SHOOTING
REMOVAL/INSTALLATION
ADJUSTMENT/TEST
INSPECTION/CHECK
CLEANING/PAINTING
REPAIR
ILLUSTRATED PARTS LIST
TABLE DF CONTENTS
CHAPTER/SECTION
l-l
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2-i
2-2
2-3
2-4
2-5
2-6
2-7
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April 7/69 Contents
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Intro
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April 7/69
FOBART L a
QD
gMDTOR GENERATOR DIVISION :
‘c 2 HOBART BROTHu?S COMP.wY
a 4 . , ,‘d
OPERATION AND MAINTENANCE MANUAL TM- 146
STATIC VOLTAGE REGULATOR, PART NO. 430467
LIST OF EFFECTIVE PAGES
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Page I
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FOBARZ D I m “0 QD
EMOTOR GENERATOR DIVISION
2 HOEIAAT BROTHERS COMPANY % *. ,,,d
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430%'
CHAPTER I OPERATION
SECTION I - INTRODUCTION
I. Scope
Thi,s'manual contains information and instructions for a Static Voltage Regulator, manu-
factured by Motor Generator Division, Hobart Brothers Company, Troy, Ohio 45373, U.S.A.
An illustrated part list is contained in Chapter 3.
2. Purpose
The purpose of the manual is to provide operators and maintenance personnel with instruc-
tions and information which will guide and assist them in the efficient operation and
maintenance of this equipment.
April 7/69 I- I
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iMOTOR GENERATOR DlV?SlON
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OPERATION AND MAINTENANCE MANUAL TM-IQ6 STATIC VOLTAGE REGULATOR, PART NO. 430467
April 7/69
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FOBART
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;MOTOR GENERATOR DIVISION
a HOBART BROTHERS COMPANY % b . B ,, R
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER I OPERATION
SECTION 2 - DESCRIPTION
I. Unit Assembly
A. The 430467 voltage regulator (Figure I) is designed to provide 1% voltage regulation
#with .25-second recovery time for all loads up to 100% of rated load on a three-phase,
four-wire, l20/20B~volt, 400-cycle, brushless alternator. This regulator provides
field excitation power for a rotary exciter and regulates alternator voltage by varying
the exciter field power as required to meet varying alternato'r load conditions to hold
the alternator voltage constant. The maximum continuous rating of this regulator is
4.0 amperes at I25 volts dc.
B. The voltage regulator consists of seven (7) basic interconnected circuits. They are:
(I) Voltage detection circuit
(2) Voltage comparison circuit
ifier (3) Transistorized pre-amp1
(4) Power stage full-wave s
(5) Damping circuit
ingle-phase magnetic amplifier
(6) Line drop compensation circuit
(7) Voltage build-up circuit
C. Any deviation of the alternator voltage from its set, regulated level is sensed by the
voltage detection and comparison circuits. A signal is fed from the comparison circuit
into the transistorized pre-amplifier, amplified, and used to drive the magnetic
amplifier. The magnetic amplifier output changes in response to this signal, changing
the field power of the rotary exciter enough to return the alternator voltage to its
regulated value. The voltage at which the alternator is regulated may be adjusted with
the voltage adjustment rheostat (2).
April 7169
Rev. Ott 27/70
l-2
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I. Resistor
2. Regulator rheostat
3. Cable length compensation rheostat
4. Cable size compensation rheostat 5. On-off switch
6. Line drop compensation chassis assembly
7. Receptacle connector
8. Damping circuit gain potentiometer
9. Receptacle connector
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;MOTOR GENERATOR DIVISION a 5 z HOBART BROTHERS COMPANY %
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OPERATION AND MAINTENANCE MANUAL W-146.
STATIC VOLTAGE REGULATOR, PART NO. 430467
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8
9
15h.6 '14 12-13
IO.
I I.
12.
13.
14.
15.
16.
17.
18.
Damping circuit rate potentiometer
Receptacle connector
Fuse
Fuseholder
Receptacle connector
Sensing and pre-amplifier chassis
assembly
High-phase sensing board assembly
Reactor
Chassis
Static Voltage Regulator
Figure I
l-2
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April 7/69
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FOBART 2 I QD
;MOTOR GENERATOR DIVISION
“0 ,’ HOBART BROTHERS COMPANY
+c 4. ,,,lJ
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
2. Components (See Figure I)
Components of these basic circuits are mounted in two (2) major sub-assembles which
are the line drop compensation chassis assembly (6), and the sensing and pre-amplifier
chassis assembly (15). Receptacle connectors (7, 9, and Il)provide quick connect-
disconnect facilities for interconnecting wire leads. The two (2) sub-assembles are
mounted on a chassis (18) along with other main components of the regulator, which
include a resistor (I), voltage adjusting rheostat (2), fuse (12) and fuseholder (l3),
nineteen-pin receptacle connector (IQ), and reactor (17). (Field ballast resistors
and line drop current transformer loading resistors are located at a point remote from
the voltage regulator and are not supplied with the regulator.)
3. Detailed Circuit Descriptions (See Figure 2)
A. Voltage Detection Circuit
(I) This circuit consists of three (3) single-phase transformers (TI, T2, T3),
three (3) diodes (CRI, CR2, CR3) connected as a three-phase, half-wave
rectifier, six (6) diodes (CRu-CR-g) connected as three (3) single-phase,
full-wave center tap rectifiers, and four (4) blocking diodes (CRIO-CR13).
The transformer primaries are connected as a three-phase, four-wire Y to the
alternator output voltage. The transformer secondaries are center-tapped,
with the center taps joined together to form a common negative for the three
(3) single-phase rectifiers and the three-phase, half-wave rectifier. The
filtered output of each of the single-phase rectifiers is proportioned to a
given phase voltage. The output of the three-phase, half-wave rectifier is
proportional to the average of the three (3) generator-phase voltages. The
positive outputs of the three (3) single-phase rectifiers are connected to a
common point through blocking diodes (CRII, CRl3). Part of the three-phase,
half-wave rectifier voltage, as determined by the ratio of the resistors RI
and R2, is connected through blocking diode CRIO to this same point, The
blocking diodes prevent current flow from one of the four (4) rectifiers into
the filter circuit of any other rectifier.
April 7/69 l-2
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~OBA~ : B QD
iMOTOR GENERATOR DIVISION
b i HOBART BROTHERS COMPANY b . ,,,+*
OPERATION AND MAINTENANCE MANUAL TM-l'+6
STATIC VOLTAGE REGULATOR, PART NO. 430467
Voltage Regulator Schematic
Figure 2
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Paoe 4
April 7169
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pBAR’I, D f QD
~MOTQR GENERATOR DIVISION
,’ HOElARr BROTHERS COMPANY “0 48 4. BLJ
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
(2) The functions of the voltage detection circuit are to provide a filtered dc voltage
proportional to the alternator voltage and to sense the highest single alternator
phase voltage if the phase voltages are not balanced. The three-phase, half-wave
rectifier senses the average phase voltage and the three (3) single-phase, full-wave
rectifiers each sense a single phase. Resistors RI and R2 are scaled such that the
portion of the three phase half wave fed through blocking diode CR10 is slightly
higher than the three (3) single-phase outputs when the alternator phase voltages are
balanced. If the three-phase voltages are not equal, the rectifier voltage
corresponding to the highest phase voltage is higher than the average voltage signal.
The output of the voltage detection circuit is thus a filtered dc voltage proportional
to the average alternator phase voltage if the phase voltages are balanced and
proportional to the highest phase voltage if the voltages are not balanced.
B. The Voltage Comparison Circuit
(1) The comparison circuit is a simple voltage reference bridge consisting of three (3) fixed resistors (R6, R7, R9), a potentiometer (R8) and a voltage reference diode
(VRI). These components are connected to form a bridge in which the dc output of the
voltage detection circuit is compared to a fixed voltage reference. A voltage pro-
portional to the difference between the reference and the input voltage to the bridge
appears between the slider of the potentiometer and the positive side of the reference
diode. This voltage is a function both of the generator voltage and the position of
the potentiometer slider.
(2) The function of the voltage comparison circuit is to compare part of the dc output
voltage of the detection circuit with a fixed dc reference voltage and derive from
their difference a signal suitable for driving a dc amplifier. It is in this circuit
that the voltage at which the alternator regulates is established. Varying the
position of the slider on the potentiometer changes the fraction of the voltage
compared to the reference and varies the driving signal of the dc amplifier.
C. The Transistorized Pre-amplifier
(I) The pre-amplifier consists of two (2) transistors (Ql, Q2), two (2) resistors
(Rl2, Rl5), a zener diode (VR2), a "freerwheeling" diode (CRl4) and a filter capac-
itor (C5). These components are connected in a two-stage dc amplifier circuit
obtaining power from the three-phase, half-wave rectifier of the voltage detection
circuit and using the power to drive the control winding of the magnetic amplifier
in response to a signal from the voltage comparison bridge. Resistors RI2 and RI5
limit the transistor currents to safe levels, the filter capacitor keeps the ripple
low in the input signal, and the zener diode and "free-wheeling" diode protect the
output transistor from voltages spikes from the reactor control coil.
April 7/69 1-2
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HOBART
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iMOTOR GENERATOR DIVISION
‘0 d HOBART BROTHERS COMPAN”
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OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
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(2) The transistorized pre-amplifier amplifies the output signal from the voltage comparison
circuit and drives the magnetic amplifier with this amplifier output.
D. The Power Stage Full-Wave Single-Phase Magnetic Amplifier
(I) This circuit consists of a single-phase, full-wave reactor (SRI) and a full-wave
rectifie,r (CRl5-CRl8) connected as a self-saturating magnetic amplifier. The saturable
reactor has two (2) load windings (l-2, 3-4) on separate cores and three (3) control
windings (5-6, 7-8, 8-10) linking both cores. Only one of the control win.dings (7-8)
is used on this regulator.
(2) The load windings are connected with the rectifiers in such a manner that only one of
the load windings conducts for each half cycle of alternator voltage. This results in
a net dc voltage on each reactor load winding, causing the reactor cores to saturate in
the absence of a control signal. The control winding is driven with dc power in such
a manner to oppose this self saturation, partially or completely desaturating the
amplifier cores in response to the pre-amplifier output,
(3) The magnetic amplifier rectifies ac voltage from the alternator and uses the dc thus
obtained to excite the rotary exciter in response to a control signal from the dc pre-
amplifier. The impedance of the reactor load windings, in series with the magnetic
amplifier rectifier, is varied by the control signal to control the exciter field power.
E. The Damping Circuit
(I) The damping circuit includes a transformer (Tu), a limiting resistor (RII), a variable
resistor (Rlu), a potentiometer (RIO), and two (2) capacitors (C6 and C7). The
transformer primary is connected to the regulator output through resistors RII and R14.
The transformer secondary is connected across the potentiometer. That part of the
potentiometer between the slider and one end is in series with the input to the trans-
sistor pre-amplifier and is filtered by one of the capacitors. The other capacitor
connects from the positive side of the voltage comparison circuit to the potentiometer.
(2) The damping circuit detects changes in the regulator output and feeds energy pulses
opposing the changes into the transistor pre-amplifier. The damping circuit affects
the transient behavior of the regulated alternator system, preventing hunting,
oscillation, and excessive overshoot of the alternator voltage following load changes.
The damping rheostat affects mostly the amplitude of the damping signal. The rate
potentiometer affects both phasing and amplitude of the signal. Capacitor C7 serves
to shift the phase of the sensing signal, reducing the system response time.
.* : ;
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GENERATOR DIVISION HOBART BROTHERS COMPANY
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
F. The Line Voltage Drop Compensation Circuit
( 1)
(2)
The line voltage drop compensation circuit consists of a current transformer
(CTI, CT2, CT3) on each phase of the load circuit, a fixed inductance (L5, L6, L7)
and variable resistance (RI6 A,B,C) in series with each of the three (3) phase
lines leading to the voltage detection circuit, a toggle switch for by-passing the
line drop compensation, a variable resistance (RI6 A,B,C) in series with each
current transformer input to the regulator and a fixed resistance in parallel with
each current transformer. Each of the three (3) current transformer secondaries ar
are connected through a variable resistor to the fixed inductance and other va-
riable resistors.
The current transformers detect the magnitude and power factor of current flowing
through the power cables from the alternator to its load and feed a signal into
the resistance and inductance ahead of the voltage detection circuit opposing the
voltage sensed by that circuit. The voltage actually sensed by the voltage detec-
tion circuit is therefore lower than the actual alternator voltage by an amount
proportional to the magnitude and power factor of the load current and thus
proportional to the voltage drop between the alternator and its load. The reg-
ulator output increases slightly so that the alternator output voltage is equal
to the regulated voltage plus the voltage drop in the lines. The variable resist-
ances may be adjusted to match exactly the impedance of the power cables carrying
the load current.
G. The Voltage Build-Up Circuit
The voltage build-up circuit consists of a relay (K) with normally closed contacts
connected across the load windings of the power reactor and a resistor (R18) in series
with the relay coil. When the machine is first started, the alternator voltage from
residual magnetism is applied through the relay contacts and the magnetic amplifier
rectifier to the exciter field circuit. This causes the exciter voltage to increase
and makes the alternator voltage build up. When the alternator voltage rises high
enough to power the regulator, the relay coil, connected to the voltage detection cir-
cuit, is energized. This actuates the relay and opens the normally closed contacts
shunting the reactor load coils, allowing the magnetic amplifier to control the exciter
field power.
April 7169 l-2
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GENERATOR DIVlS1DN HOBART BROTHERS COMPANY
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. MO'+67
, ,_ _*’
April 7/69
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;MOTOR GENERATOR DIVISION HOBART BROTHERS COMPANY
OPERATION AND MAINTENANCE MANUAL TM-L'+6
STATIC VOLTAGE REGULATOR. PART NO. 430467
CHAPTER I OPERATION
SECTION 3 - INSTALLATION AND PREPARATION
I. Installation
A. ,General
(3) This voltage regulator is designed primarily for drawer type mounting, however it
is not attitude sensitive and may be mounted in any position without affecting
its operation. In some installations it is mounted in what appears to be a back-
ward position which may make reading of the cable compensation adjusting, intruc-
tion plate somewhat difficult.
(2) The regulator does not dissipate large amounts of power, but certain components,
especially the line drop compensation rheostats, need a reasonable amount of air
for convection cooling. For this reason, the regulator should not be mounted in
a small airtight enclosure whi-ch would prevent air circulation around the line
drop chassis assembly.
(3) Four (II) mounting holes (one in each corner of the main chassis) are provided for
attaching the regulator.
(4) Position the regulator in its mounted location and attach with four (4) each
screws, washers and nuts.
B. Connections
(I) All electrical connections to the regulator are made through a nineteen (19) pin,
receptacle connector (l-2: 14, Fig. I) which is bracket mounted on the chassis.
(2) The connection diagram no. 430344, which accompanies each regulator, should be
consulted when connecting the regulator to a generator in all instances, except
when a regulator is being replaced.
2. Preparation for Use
A. No special preparation is necessary to place the regulator in service other than the
following checks and inspections:
(I) Check all terminal lug type connections for security.
(2) Check all plug and receptacle type connectors to make certain they are firmly
mated.
B. It will be necessary to adjust a new regulator at initial start-up after installation
(see Chapter 2, Section 4).
April 7/69 l-3
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HOBART
% CD
jMOTOR GENERATOR DIVISION
z 2 HOBART BROTHERS COMPANY B . ,,,d
OPERATION AN0 MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
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~OEAR~ 8 I
QD
gYOTOR GENERATOR DIVISION
3 z HOBART BROTHERS COMPANY
46 *. .&+
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 4SO'+67
CHAPTER 1 OPERATION
SECTION * - OPERATION
I. Operating Procedures
A. ,Operating procedures, as such, are not applicable to the static voltage regulator
because it requires no start, stop, or operating instructions. See Chapter 2, Section
4 for initial start-up adjustments and procedures.
B. Make certain the line drop compensation switch (l-i; 5, Fig. I) is in the ON position
when operating the generator.
April 7/69 l-4
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~OIIAR~ t ‘: 3 QB
~“OTOR GENERATOR DIVISION
2 HOBART BROTHERS COMPANY *c *. ,,,d
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 'WI467
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MOTOR GENERATOR DIVISION HOBART BROTHERS COMPANY
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 2 MAINTENANCE
SECTION 1 - DESCRIPTION AND OPERATION
I. Sequence and Theory of Operation
A description of the sequence of events, which occur when the static voltage regulator is in
operation, is presented here to give maintenance personnel a better understanding of how
and why the unit operates, and thus assist them in the adjustment, trouble shooting and
repair of the equipment.
A. When the machine is started, the rotary exciter is excited from alternator residual
magnetism through the starting relay and the magnetic amplifier rectifier. As the
rotary exciter voltage increases, alternator excitation increases and the alternator
voltage builds up. The voltage detection circuit of the regulator receives this volt-
age, rectifies and filters it, and feeds it into the voltage comparison circuit. When
the voltage becomes high enough, the build-up relay switches the reactor load windings
into the circuit. The magnetic amplifier reactor saturates from self saturation, pre-
senting a low impedance to the alternator voltage allowing the exciter field power to
increase as alternator voltage increases.
B. As the alternator voltage approaches its regulated value, the reference bridge voltage
increases. The voltage across the reference diode remains constant, clamping the
emitter of the NPN input transistor to a fixed voltage above negative. The base volt-
age of the transistor increases as the bridge voltage increases. The transistor be-
comes foward biased and conducts, turning on the PNP transistor in series with the
reactor control coil. This allows current to flow in the magnetic amplifier reactor
control winding in a direction opposing self saturation and the reactor core becomes
less saturated. As the reactor desaturates, the impedance to the alternator voltage
by the reactor load winding increases. The rectified current flowing in the exciter
field from the magnetic amplifier is limited by the increasing reactor impedance,
When the alternator voltage reaches the regulated value, the rectified three-phase
voltage of the sensing circuit is just enough to cause the magnetic amplifier output
to excite the exciter sufficiently to maintain the alternator voltage at its regulated
level.
C. The voltage at which the alternator is regulated may be varied by changing the position of the slider on the "Volts Adjust" potentiometer. This increases or decreases the
potential of the base of the pre-amplifier input transistor, changing that transistor's
driving siganl. Increasing the potential of the slider with respect to the detection
circuit negative causes regulated voltage to decrease. Decreasing the slider potential
causes the voltage to increase.
D. Voltage Regulation
April 7/69 2- I
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yOElART t
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;MOTOR GENERATOR DIVISION 0 2 G HOBART BROTHERS COMPANY % r, *. ,,,d
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
(I) Load applied
When the alternator is loaded, its terminal voltage decreases, lowering the rectified
three-phase voltage of the voltage detection circuit. The base potential of the pre-
amplifier input transistor is directly proportional to the detection circuit dc voltage,
which is, ,in turn, directly proportional to the alternator voltage. The potential of
the emitter is the constant potential of the reference voltage. When the alternator
voltage drops, the voltage from base to emitter of the transistor decreases. The
transistor collector current, flowing from the base of the second stage transistor,
decreases, lowering the output of the second stage transistor. The lower control cur-
rent in the reactor control winding allows reactor self saturation to make the reactor co
core more saturated. As the reactor saturates, its impedance decreases and the rec-
tified current flowing in the rotary exciter field increases. The alternator voltage
increases until the voltage returns to its regulated value.
(2) Load removed
When a load is removed from the alternator, the alternator voltage rises. The rectified
three-phase voltage in the sensing circuit also rises, while the emitter potential
clamped by the reference voltage, remains constant. The base to emitter voltage tends
to increase, turning the transistor further on. The second stage transistor turns on
more, increasing the control current of the magnetic amplifier. This causes a decrease
in the reactor core saturation, decreasing the regulator output power and lowering the
machine excitation until the alternator voltage returns to its regulated value.
April 7/69
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GENERATOR DIVISION HOBART BROTHERS COMPANY
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 2 MAINTENANCE
SECTION 2 - TROUBLE SHOOTING
I. General
Trouble shooting is an orderly process of checking and eliminating possible causes of
'trouble until the exact cause of a trouble is found. As a rule, the best place to start
looking for the cause of a trouble in a circuit is at the source of power. Continue
testing and checking the circuit, step-by-step, in an orderly manner, until the cause of
trouble is located.
2. Trouble Shooting Chart (See Figure I)
A. Description
The trouble shooting chart lists information under three (3) headings:
(I) Trouble
(2) Probable cause
(3) Remedy
B. Use of the Trouble Shooting Chart
(I) The trouble shooting chart is furnished to provide maintenance and repair per-
sonnel with a time-saving guide in locating troubles. The chart makes it possible
for the electrician to go directly to the source of trouble without checking an
entire circuit.
NOTE: See Figure 2, Schematic Diagram, for location of parts identified by
reference designation in the trouble shooting chart. Also see 3-1, Fig. I
for identification by part number.
(2) If the cause of a trouble is an uncommon one and cannot be located by use of the
chart, then the only alternative is to completely check the affected circuit(s).
(3) All of the troubles listed in the chart are not necessarily caused by a defective
voltage regulator. See the applicable ground power (or other) manual for addi-
tional trouble causes and remedies.
April 7/69 2-2
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HOBART 1 ::
QD
;MOTOR GENERATOR DIVISION
% d HOBART BROTHERS COMPANY
% . ,n%tG
OPERATION AND MAINTENANCE MANUAL Tt4;1@6
STATIC VOLTAGE REGULATOR, PART NO. 430467
TROUBLE I PROBABLE CAUSE REMEDY
VOLTAGE REGULATOR
I. Generator a. Fuse (Fi) open a. Replace fuse.
voltage will not
build up to normal b. Shorted diode, (CR15 thru b. Replace diode.
18)
c. Exciter field circuit c. Repai r.
shorted or grounded
d. Sensing and pre-amplifier d. Connect.
plug (2PL or 3PL) not
connected
e. Generator field circuit e. Restore continuity.
open
f. Generator field circuit f. Replace resistor.
ballast resistor open
9- Voltage build-up circuit g. Replace relay.
relay (K) normally closed
contacts open
h. Generator residual voltage h. "Flash" exciter fields with
too low, or reversed 12-volt dc from a storage
battery.
i. Shorted or open power i. Replace defective diode.
diode (CR15 thru CRl8)
2. Generator a. Voltage reference diode a. Replace diode.
voltage builds (VRI) shorted
up until relay
actuates: then b. Pre-amplifier transistor b. Replace transistor.
falls back (Ql) (Q2) shorted
c. Pre-aplifierr diode
(VR2) shorted
C. Replace diode.
d. Stability capacitor d. Replace capacitor.
(C7) shorted
3. Generator voltage a. Voltage build-up relay a. Replace relay.
builds to a (K)
dangerously high (I) Coil open
level. Flashing (2) Contacts "welded"
relay does not
actuate.
2-2 Trouble Shooting Chart (Sheet I of 3) April 7/69
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HOBART
D
;MOTOR GENERATOR DIVISION
d HOBART BROTHERS COMPANY ,,I+?
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. '430467
TROUBLE I PROBABLE CAUSE I REMEDY
VOLTAGE REGULATOR (Cont'D)
relay does not
actuate (Cont'd)
Replace diode and check sensing
transformers for damage.
age builds to a
relay actuates,
but voltage is
with voltage ad-
justing potentio-
meter
(SRI) winding open
Line drop coupling plug
(PL4) not in socket
Damping potentiometer
Voltage comparison
potentiometer (~8) circuit
Replace reactor.
Replace potentiometer.
Restore continuity.
Voltage comparison
resistor (R7) open
Replace resistor.
Voltage comparison Replace diode.
reference diode (VRI) open
Pre-amplifier capacitor Replace capacitor.
Replace transistor.
Pre-amplifier resistor
(RI5 or R12) open
Replace resistor.
Replace diode and check trans-
formers (TI, T2 and T3) for
damage.
5. Poor voltage a. Voltage comparison resistor a. Replace resistor.
regulation (R6 or R9) open
when generator
is loaded (droop b. Voltage sensing choke b. Replace choke.
at regulator in- (LI, L2, L3, or L4)
put terminals partially shorted
more than I$)
April 7/69 Trouble Shooting Chart (Sheet 2 of 3) 2-2
Figure I Page 3
-
. . . 1 . ‘. ., _ ,.._ ;.:
yOIl+AT
t I
QD
jMOTOR GENERATOR DIVISION
B HOBART BROTHERS COMPANY % +c * . ,,‘I~*
OPERATION AND MAINTENANCE MANUAL TM-i'+6
STATIC VOLTAGE REGULATOR, PART NO. '+301)67
TROUBLE I PROBABLE CAUSE I REMEDY
VOLTAGE REGULATOR (Cont'd)
5. Poor voltage c. Voltage sensing diode C. Replace diode.
regulation when (CR1 thru CR9) open
generator is
loaded (droop at d. Voltage comparison d. Replace diode.
regulator input reference diode (VRI) has
terminals more high dynamic resistance
than I%) (cond't)
e. Pre-amplifier transistor e. Replace transistor.
(Ql or 42) low gain
6. Generator a. Damping transformer a. Replace transformer.
voltage unstable (T4) open
b. Damping rheostat (Rl4) b. Adjust or replace rheostat.
incorrectly adjusted or
open
c. Damping resistor (RII)
open
C. Replace resistor.
d. Damping potentiometer d. Check continuity -- if good,
(RIO) incorrectly ad- adjust; if not, replace
justed or open potentiometer.
7. Voltage of one a. Voltage detection re- a. Replace resistor.
phase rises above sister (R2) open
130 volts, line
to neutral,, with b. Voltage detection trans- b. Replace transformer.
unbalanced load former (TI, T2, T3) coil
shorted or open
c. Voltage detection choke C. Replace choke.
(L2, L3, or L4) coil open
d. Voltage detection diode d. Replace diode.
(CRII, CR12 or CR13)
shorted
3. Generator volt- a. Voltage detection diode a. Replace diode and transformers
age becomes eratic; (CRI thru CR9) shorted (TI, T2 and T3)
smoke comes from
voltage detection b. Voltage detection b. Replace capacitor and trans-
transformers capacitor (Cl thru C4) formers (TI, T2 and T3):
shorted
2-2 Trouble Shooting Chart (Sheet 3 of 3) April 7/69
Page 4 Figure I
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HOBART 0 1
QD
;MOTORGENERATOR DIVISION l
c 2
HOBART BROTHERS COMPANY
4 * . 8,J
OPERATION AND MAINTENANCE MANUAL TM- 146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 2 MAINTENANCE
SECTION 3 - REMOVAL AND INSTALLATION
I. General
It is recommended that the voltage regulator be removed from its mounted position and
placed on a workbench before any removal of components is attempted, with the exception of
the fuse, fuseholder, etc., which are easily accessible.
2. Removal of Voltage Regulator
A. Disconnect the main nineteen (19) pin connector (l-2; 14, Fig. I).
B. Remove the regulator attaching hardware and exercise care to avoid dropping the unit.
C. Place the unit on a clean workbench.
3. Removal of Regulator Main Components and Sub-Assemblies
There are no special instructions required for removal of regulator main components. Use
standard electrical industry practices.
4. Installation of Regulator Main Components and Sub-Assemblies
Install regulator components in accordance with good industry practices, making certain
that all electrical connections are tight and all attaching hardware is securely installed.
April 7/69 2-3
Page I
-
. . . - _ ._.~. ̂
$lOBA~ t ::
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iMOTOR GENERATOR DIV1810N
‘: E HOBART EROTHERS COMPANY cc *. (I,,+*
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 'h30467 .:I -F-j /
/'
,
2-3
Page 2
April 7/69
-
HOBART z E
QD
!MOTOR GENERATOR DIVISION I
% z HOBART BROTHERS COMPANY
4F *. &te
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 2 MAINTENANCE
SECTION '+ - ADJUSTMENT AND TEST
I. Adjustment (See l-2, Fig. I)
A., General
(I) When a voltage regulator is first put in service, it may require up to five (5)
separate adjustemnts.
(2) The adjustments are for generator voltage control, damping, rate, line drop
compensation gain and line drop compensation rate.
(3) The generator must be running at rated rpm, under no load conditions, when volt-
age regulator adjustments are made. Adjust the regulator as follows:
B. Adjust Voltage Control
(I) The output voltage at which the generator is regulated is adjustable by this
rheostat control (2).
(2) Turn the rheostat knob clockwise to increase generator output voltage, and counter-
clockwise to decrease voltage.
(3) Observe the output voltage as indicated by the voltmeter which is located on the
control panel.
(4) It may be necessary to readjust the voltage control after other adjustments are
completed.
c. Adjust Line Drop Compensation Gain
Adjustment of the line drop compensation magnitude is made with the knob marked "Foot
Compensation" (3) on the line drop compensation module. The knob dial is calibrated
for approximate cable length in feet. The "Foot Compensation" knob controls a rheostat
which limits the current flowing in the compensation circuit. The setting of the
rheostat resistance determines the magnitude of the compensation. Rotating the knob
clockwise increases the magnitude of the compensation, and rotating counterclockwise
decreases the magnitude. To adjust the line drop compensation gain, proceed as follows:
(I) Connect the output cables to a load.
(2) Make certain that the line compensation switch (5) is in the ON position.
(3) Set the "Foot Compensation" knob to a dial setting corresponding to the length of
the output cables being used.
April 7/69 2-4
Page I
-
GENERATOR DIVISION HOBART BROTHERS COMPANY
OPERATION AND MAI NTENACNE MANUAL TM- 146
STATIC VOLTAGE REGULATOR, PART NO. 430467
D. Adjust Line Drop Compensation Phase
The compensation circuit must be adjusted to match not only the voltage drop in the
power cables to the load, but must be adjusted to match the phase of the voltage drop.
This is done by adjusting the relative magnitude of the reactor and resistive compen-
sation with the “cable size” knob (4). Thi s knob i s cal i brated in cab1 e si zes and con-
trol s a varied ‘resistance in series with a fi xed reactance. The power factor of the
compensation ci rcui t is varied by varying the resistance and 1 eaving the reactance
constant. Rotating the knob clockwise increases the resistive component of the compen-
sation circuit and simulates a smaller cable. Rotating the knob counterclockwise
decreases the resistive component of the compensation. Adjust the 1 ine drop compensation
phase as follows:
(I) Set the “cable size” knob (4) to a dial setting corresponding to the size of the
output cab1 es.
(2) Readjust the generator voltage control (2) to the desired value if the 1 ine drop
compensation adjustments have affected the no-load voltage output.
(3) Load the machine with the 1 argest avai 1 able three-phase load of rated power factor
not exceeding the maximum rating of the machine. If the load voltage rises or
drops more than one percent at the load end of the cables, decrease or increase
the setting of the load “Foot Compensation” knob uni tl the regulation is flat.
(4) Load the machine with the largest available three-phase unity power factor load
within the rating of the machine. I f the voltage rises or drops more than one
percent at full load, adjust the “cable size” setting until flat regulation is
obtained. if it is necessary to adjust the cable size setting, repeat step three
(3) above.
E. Adjust Damping Gain
The gain adjustment for the damping circuit is a l500-ohm variable resistance (Rl4) in
series with the primary winding of the damping transformers. Thi s resi stor is in the
form of a screwdriver adjustable potentiometer (8) with a locking nut, located on the
right side of the end of the sensing and pre-amp1 ifier assembly. Turning the potentio-
meter screw clockwise increases the resistance, decreasing the system damping and
making the regulator less stable. Turning the adjustment screw counterclockwise
decreases the resi stance, improving the regulator stability but slowing the regulator
response. This resistance is set at the factory for satisfactory response times and
should not ordinarily require additional adjustment, however i f adjustment becomes
necessary, p roceed as fol 1 ows:
(I) Loosen the potentiometer adjusting screw lock nut.
2- 4
Pane 7
April 7/69
-
HOBART
D
;hlOTOR GENERATOR DIVISION
z HOBART BROTHERS COMPANY 4. ,I+
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
(2) Turn the adjusting screw counterclockwise, with a screwdrive, to improve generator
output stability.
(3) Turn the adjusting screw clockwise to decrease regulator response time.
(4) Tighten the lock nut securely after the adjustment has been completed.
F. Adjust Damping Rate
The rate adjustment is a 2500-ohm potentiometer (IO) connected across the secondary of
the damping transformer. Both the amplitude of the damping signal and its phasing are
affected by this potentiometer. Because of this, a relatively large change in system
performance is obtained with a relatively small change in its setting. When the screw
is turned full counterclockwise, the amplitude of the damping signal fed into the tran-
sistor pre-amplifier is minimum. When the screw is set full clockwise, the signal is
maximum. The system may be unstable with this potentiometer set at either maximum or
minimum because of the phase shift. The potentiometer is set and locked at the factory
for good system transient response and should not need further adjustment. If the
potentiometer does need adjustment, proceed as follows:
(I) Loosen the adjusting screw locknut.
(2) Turn the adjusting screw to near its full counterclockwise position.
(3) Turn the adjusting screw slowly clockwise while observing the generator output
voltage on a lightly damped voltmeter. The generator output voltage will oscillate
until a certain point of adjustment is reached, at which it will abruptly become
steady.
The best adjustment for the system will usually be reached when the screw is turned
just slightly (5' to 19') beyond this point in a clockwise direction.
(4) Tighten the locknut.
2. Test the Voltage Regulator
After necessary adjustments have been camp
A. Connect a voltmeter at the load end of
B. Operate the machine at no load and obs
leted, test the voltage regulator as follows:
the generator output cables.
erve voltage reading.
C. Operate the machine under load and observe voltage reading.
D. Voltage under load and no load should vary no more than 1% at the load end of the
cables.
April 7/69 2-4
Page 3
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_, __ _ ^ . . _.
GENERATOR DIVISION HOBART BROTHERS COMPAN”
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NOa 430467 :.' '-%i i
NOTE: The panel mounted voltmeter will indicate a higher voltage than indicated by a
I es. The amount of variance will depend load end of the output cab
and size.
voltmeter at the
upon cable length
- ‘-7 .I .-3 : ‘_ -.1 . .._ :..;;/
2-4
Page 4
April 7/69
-
HOBART
I a “0
QD
;MOTOR GENERATOR DIVISION *
2 HOBART BROTHERS COMPANY
46 ‘+ 4. BhO
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 2 MAINTENANCE
SECTION 5 - INSPECTION AND CHECK
I. Inspection
A. General
Inspect the voltage regulator, periodically, at the same time other inspections of the
generating unit are made.
B. Inspect Connectors and Terminals
(I) Inspect connectors for full engagement.
(2) Inspect terminals for security.
C. Inspect Wiring
Inspect wire insulation for cracks and damage.
D. Inspect Attaching Parts
Inspect attaching hardware for security.
2. Check the Voltage Regulator
A. General
Figure I provides a list of electrical checks which may be performed to locate defec-
tive componenets in the voltage regulator. Use the chart in conjunction with l-2 Fig.
2.
B. Conditions for Check
(I) The generator must have no load (other than the regulator).
(2) The voltage regulator must be regulated at 120/208 volts, with four-wire, three-
phase voltage at 400 cycles per second.
(3) A Triplett No. 630 volt-ohmmeter is recommended for measuring the voltages.
NOTE: The operating voltage listed in the chart were observed when the regulator
was supplying two (2) amperes of direct current to the generator exciter
fields. This current value may be different for some installations of the
regulator and, consequently, the voltage check values may vary slightly.
April 7/69 2-5
Page I
-
HOBART : B
QD
;MOTOR GENERATOR DIVISION z
% 2 HOBART BROTHERS COMPAN”
ZF *. #,,J
OPERATION AND MAINTENANCE MANUAL ~%+=I46
STATIC VOLTAGE REGULATOR, PART NO. 430467
REFERENCE
DESIGNATION
Cl
c2
c3
C4
c5
C6
c7
CRI
CR2
CR3
CR4
CR5
CR6
CR7
CR8
CR9
CR10
CRII
CR12
CR13
CR I4
CR15
CR16
CR17
2-5
Page 2
DESCRIPTION
Capacitor, 3 mfd, 5Ov
Capacitor, 3 mfd, 50~
Capacitor, 3 mfd, 5Ov
Capacitor, 3 mfd, 5Ov
Capacitor, 20 mfd, 3Ov
Capacitor, 500 mfd, l5v
Capacitor, 20 mfd, 3Ov
Diode, in 4820
Diode, in 4820
Diode, in 4820
Diode, in 4620
Diode, in 4820
Diode, in 4820
Diode, in 4620
Diode, in 4820
Diode, in 4820
Diode, in 4820
Diode, in 4820
Diode, in 4820
Diode, in 4820
Diode, in 4820
Diode S2040
Diode S2040
Diode S2040
Voltage Regulator Check
WHERE VOLTAGE
IS OBSERVED
Across Capacitor
Across Capacitor
Across Capacitor
Across Capacitor
Across Capacitor
Across Capacitor
Across Capacitor
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Across Diode
Chart (Sheet I of 4)
Figure I
VOLTAGE
16.0 Volts dc
12.5 Volts dc
12.5. Volts dc
12.5 Volts dc
. 58 Volts dc
Too Low To Read
5.4 Volts dc
16.8 Volts dc
16.8 Volts dc
16.8 Volts dc
13.0 Volts dc
--“-‘?b .,. -: ::..
,
‘. .j . . -P&.9
13.0 Volts dc
13.0 Volts dc
13.0 Volts dc
13.0 Volts dc
13.0 Volts dc
. 65 Volts dc
* 60 Volts dc
. 60 Volts dc
-60 Volts dc
3.8 Volts dc
33.0 Volts dc
33.0 Volts dc
33.0 Volts dc
April 7/69
-
~OEIAR~ e t
QD
;MOTOR GENERATOR DIVISION 2
“0 z HOBART BROTHERS COMPANY
s, d 4. a.0
REFERENCE
DESIGNATION
CR18
K
Li
L2
L3
L4
L5
L6
L7
Q'
QI
QI
42
42
42
RI
R2
R3
R4
R5
R6
R7
R8
R8
April 7/69
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR,
DESCRIPTION
Diode S2040
Relay, KHP l7D4l
Choke, ICZ-63
Choke, ICZ-63
Choke, ICZ-63
Choke, ICZ-63
Choke, ICZ-97
Choke, ICZ-97
Choke, ICZ-97
Transistor 2N3904
Transistor 2N3904
Transistor 2N3904
Transistor MMqOO7
Transistor MM4007
Transistor MM4007
Resistor, 150 ohms, 5 watt
Resistor, 1000 ohms, 5 watt
Resistor, 1000 ohms, 5 watt
Resistor, 1000 ohms, 5 watt
Resistor, 1000 ohms, 5 watt
Resistor, 470 ohms, l/2 watt
Resistor, 500 ohms, 5 watt
Voltage Adjust Potentiometer
Voltage Adjust Potentiometer
PART NO. 430467
WHERE VOLTAGE
IS OBSERVED
Across Diode
Across Relay Coil
Across Choke Coil
Across Choke Coil
Across Choke Coil
Across Choke Coil
Across Choke Coil
Across Choke Coil
Across Choke Coil
Emitter To Base
Base To Collector
Emitter To Collector
Emitter To Base
Base To Collector
Emitter To Collector
Across Resistor
Across Resistor
Across Resistor
Across' Res
Across Res
Across Res
stor
stor
stor
Across Resistor
R7 End To Slider
R9 End To Slider
Voltage Regulator Check Chart (Sheet 2 of 4)
Figure I
VOLTAGE
33.0 Volts dc
13.0 Volts dc
.60 Vols dc
. 60 Volts dc
. 60 Volts dc
.60 Volts dc
.70 Volts ac
. 70 Volts ac
-70 Volts ac
.55 Volts dc
9.2 Volts dc
9.8 Volts dc
. 55 Volts dc
12.0 Volts dc
12.6 Volts dc
.8 Volts dc
2.5 Volts dc
2.5 Volts dc
12.5 Volts dc
12.5 Volts dc
6.0 Volts dc
3.0 Volts dc
2.4 Volts dc
.7 Volts dc
2-5
Page 3
-
REFERENCE
DESIGNATION
R8
R9
RIO
RIO
RII
RI2
RI'4
RI5
Rl6, A, 8, C
Rl7,A. B. C
RI8
SRI
SRI
SRI
TI
TI
TI
T2
T2
2-5
Page 4
_ ., ._ _. -.-. -.._ _. . . ._. _
HOBART t
QD
fMOTOR QENERAT’OR DlVlSJON D :: cz t408ART 8ROTHo?S COMPANY s
% . ,,,R
OPERATION AND MAINTENANCE MANUAL m-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
DESCRiPTlON
Voltage Adjust Potentiometer
Resistor, 1000 ohms, 5 watt
Potentiometer, 2500 ohms,
2 watt
Potentiometer, 2500 ohms,
2 watt
Resistor, 1000 ohms, 25 watt
Resistor, 100 ohms, 5 watt
Rheostat, 1500 ohms, 25 watt
Resistor, 1000 ohms, 5 watt
Rheostat, 250 ohms, Triple
Tandem
Rheostat, IO ohms, Triple
Tandem
Resistor, 47 ohms, I watt
Saturable Reactor
Saturable Reactor
Saturable Reactor
Transformer, Sensing
Transformer, Sensing
Transformer, Sensing
Transformer, Sensing
Transformer, Sensing
WHERE VOLTAGE
IS OBSERVED
Across Potentiometer
Across Resistor
Slider To R8 End
Across Potentiometer
Across Resistor
Across Resistor
Across Rheostat
Across Resistor
Across Rheostat
Across Rheostat
Across Resistor
Across Winding 1-2
Across Winding 3-Y
Across Winding 5-6
Green To Black
Red To Orange
Red To Blue
Green To Black
Red To Orange
Voltage Regulator Check Chart (Sheet 3 of 4)
Figure I
VOLTAGE
3. I Volts dc
5.9 Volts dc
Too Low To Read
5.9 Volts ac
65 Volts ac
44 Volts dc
3.9 Volts dc
20 Volts ac
15 Volts dc
l I5 Volts dc
. 55 Volts ac
l I5 Volts ac
3.Y Volts dc
I40 Volts ac
. 4 Volts dc
I40 Volts ac
. 4 Volts dc
6.0 Volts ac
. 38 Volts dc
120 Volts ac
30 Volts ac
15 Volts ac
120 Volts ac
30 Volts ac
April 7/69
-
REFERENCE
DESIGNATION
T2
T3
T3
T3
T4
T4
VRI
MOTOR GENERATOR DIVISION HOBART BROTHERS COMPANY
OPtkATlON AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430'467
DESCRIPTION
Transformer, Sensing
Transformer, Sensing
Transformer, Sensing
Transformer, Sensing
Damping Transformer
Damping Transformer
Reference Diode
WHERE VOLTAGE
IS OBSERVED
Red To Blue
VOLTAGE
I5 Volts ac
Green To Black 120 Volts ac
Red To Orange
Red To Blue
30 Volts ac
15 Volts ac
Orange To Blue 6.0 Volts dc
Red To Brown II.0 Volts ac
I.1 Volts dc
Across Diode
April 7/69 Voltage Regulator Check Chart (Sheet 4 of 4)
Figure I
6. I Volts dc
2-5
Page 5
-
.-.. .--. . I. ., _:-.
GENERATOR DI HOBART BROTHERS COMPAN”
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. '+3O'M7
VISION
-> ‘a,
-. -I
: ,’ __ ”
2-5
Dc.rrr c
April 7/69
-
rOBART e s
QD
iMOTOR GENERATOR DIVISION
“0 i HOBART BROTHERS COMPANY
*c Q. &?+
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 2 MAINTENANCE
SECTION 6 - CLEANING AND PAINTING
Cleaning
Under normal operating conditions, very little cleaning is required; however, when operat-
ing under dusty conditions, it may be necessary to periodically clean the regulator with
compressed air.
CAUTION: A. MAKE CERTAIN THE COMPRESSED AIR IS CLEAN AND DRY.
B. EXERCISE CARE TO AVOID DAMAGE TO COMPONENTS.
Painting
A. General
Only the sheet metal components of the voltage regulator are painted. Electrical and
electronic components should never be painted.
B. Preparation for Painting
(I) Remove the regulator from the control box (or its mounted position) and place on
a clean workbench.
(2) Disassemble as required to remove the component(s) to be plated.
(3) Prepare the surface to be painted by sanding. Remove all rust.
(4) Use tape to mask any electrical componenets not removed in step (2) above.
(5) Prime all bare metal surfaces with red oxide primer, Hobart No. 903318, or
equivalent.
C. Painting the Unit
(I) Make certain that all surfaces are clean and dry.
(2) Paint all prepared surfaces with gray enamel paint, Hobart No. 903316, or
equivalent.
April 7/69 2-6
Page I
-
$lOBART P
QD
;MOTOR GENERATOR DOVISION s z 1 z
HOEART EROTHERS COMPANY
48 * . &
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. WOQ67
2-6
Paae 2
_--I. . . .\
. ., .\ . ..\. 1
.._, . ../ -d
April 7/69
-
FOBART I I QB
;MOTOR GENERATOR DIVISION
“c 2 HOBART BROTHERS COMPANY
% 6 Q. &‘
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 2 MAINTENANCE
SECTION 7 - REPAIR
I. Repair of the Unit
Repair of the voltage regulator will consist of parts replacement only
A. Use the trouble shooting chart, 2-2, Fig. I, and the electrical check chart, 2-5,
Fig. I, to locate defective parts.
B. If the defective part cannot be replaced while the regulator is in its mounted posi-
tion, remove the unit and place it in a clean workbench.
C. Disassemble as required to reach the part to be replaced.
D. Remove the part(s) found to be defective in step A. above, and install new part(s).
E. Reassemble and reinstall the unit.
F. Adjust, if required, in accordance with 2-4, paragraph I.
April 7/69 2-7
Page I
-
HOBART g iMOTOR GENERATOR DIVISION 0 ‘c QD E HOBART BROTHERS COMPANV %
4. ,,I.(\ &-
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. WY+67
;-..
. 3 ‘..
. . .‘..,l ;,.
2-7
Page 2
April 7169
-
HOBART I I QD
;MO?OR GENERATOR DIVISION
“c 2 HOBART BROTHERS COMPANY ?=
4.B.O &-
OPERATION AND MAINTENANCE MANUAL TM-196
STATIC VOLTAGE REGULATOR, PART NO. 430467
SUBJECT
ILLUSTRATED PARTS LIST
INTRODUCTION
TABLE OF CONTENTS
CHAPTER/SECTION PAGE
3-l I
3- I I
3- I I
3- I 2
3- I 5
EXPLANATION OF PARTS LIST FORM
MANUFACTURER'S CODES
PARTS LIST
April 7/69 Contents
Page I
-
FOBART e ;MOTOR GENERATOR DIVISION : z ‘0 QD z HOBART BROTHERS COMPANY
*ia . ,,d-
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
CHAPTER 3 ILLUSTRATED PARTS LIST
I. Introduction
A. Stop e
The Illustrated Parts List identifies, describes and illustrates all components of the
Static Voltage Regulator, part no. 430467, with the exception of attaching hardware.
8. Purpose
The purpose of the Illustrated Parts List is to provide maintenance and provisioning
personnel with identification and descriptive data for use in the provisioning, re-
quisitioning, storing and issuing of spare parts.
2. Explanation of Parts List Form
This form is divided into five columns. Beginning at the left side of the form and proceed-
ing to the right, columns are identified as follows:
A. "FIGURE ITEM NO." Column
This column lists the figure number of the illustration applicable to the list and also
identifies each part in the illustration by an item number which appears on the illus-
tration. Assemblies and sub-assemblies which are illustrated in their disassembled
state will not be identified by an item number.
B. "HOBART PART NUMBER" Column
ALL part numbers appearing in this column are Hobart numbers. In all instances where
the part is a purchased item, the vendor's identifying five-digit code and his part
number will appear in the "NOMENCLATURE" column. Vendor parts which are modified by
Hobart will be identified as such in the "NOMENCLATURE" co1 umn. In case Hobart does
not have an identifying part number for a purchased part, the "HOBART PART NUMBER" col-
umn will reflect "NO NUMBER" and the vendor's number will be shown in the v~~~~~~~~~~~~"
column. Parts manufactured by Hobart reflect no vendor code or part number in the
"NOMENCLATURE" column.
C. "NOMENCLATURE" Column
The item identifying name appears in this column. The indenture method is used to
indicate item relationship. Thus, componenets of an assembly are listed directly below
the assembly and indented one space. Vendor codes and part numbers for purchased
parts are shown in this column. Hobart modification to vendor items is also noted in
this column.
April 7/69 3- I
Page I
-
. -- ,,., ..* . -. _’ _ : _, ‘~ . : ‘.I_ _ _. :
.( . .._..
FOBAR? I s QD
:MOTOR GENERATOR DIVISION i
% z HOBART BROTHERS COMPANY
% . ,,J , --.
OPERATION AND MAINTENANCE MANUAL TM-146 P'\, '.
STATIC VOLTAGE REGULATOR, PART NO. 4301167 ,i
D. "EFF" (Effective) Column
This column is used to indicate the applicability of parts to different models of equipment.
ment. The column does not apply to this equipment.
E. "UNITS PER ASSY" Column
This column indicates the quantity of parts required for an assembly or sub-assembly in
which the part appears. This column does not necessarily reflect the total used in the
complete end item.
3. Manufacturer's Codes
The following list is a compilation of vendor codes with names and addresses for SUPPI iers of
purchased parts listed in this publication. The codes are in accordance with the Federal
Supply Codes for Manufacturer's Cataloging Handbook H'I-I, and are arranged in numerical order.
CODE VENDOR'S NAME AND ADDRESS
'5605 Cutler-Hammer, Inc.
Milwaukee, Wisconsin
44655 Ohmite Manufacturing Company
Chicago, Illinois
58849 Syntron Company Homer City, Pennsylvania
75376 Kurz Kasch, Inc.
Dayton, Ohio
75915 Littlefuse, Inc.
Chicago, Illinois
76149 Mallory Electric Corporation
Detroit, Michigan
79500 Westinghouse Electric Corporation Pittsburgh, Pennsylvania
8021' Motorola, Inc.
Chicago, Illinois
84970 Sarkes Tarzian Bloomington, Indiana
8615'1 Chicago Electric Engineering, Inc.
Chicago, Illinois
April 7/69
-
CODE
88245
89265
89709
93790
96682
April 7/69
MOTOR GENERATOR DlVl&lON HOBART BROTHERS COMPANY
OPERATION AND MAINTENANCE MANUAL TM-l'+6
STATIC VOLTAGE REGULATOR, PART NO. '+30'+67
VENDOR'S NAME AND ADDRESS (COND~T)
U.S. Engineering Company
Glendale, California
Potter & Brumfield Sales Company
Chicago, Illinois \
Amphenol Electronics Corporation
New York, New York
Cornell Dubilier Electric Corporation
New Bedford, Massachusetts
Genisco, Inc.
Los Angeles, California
Page 3
-
... I ... ._ .... . .-_A ..... ..... ... --- .... . . ........
. : :.I&.^: ...... :.: ....... .... _. -. ...........
3-l
~OIBAR~ D J QD
;YOTOR GENERATOil DIVISION
s 2 HOBART BROTHERS COMPANI
b . ,,,@
OPERATION AND MAINTENANCE MANUAL M-146 I--- STATIC VOLTAGE REGULATOR, PART NO. 430467
y \, 0 0 \ \\ I’ I’ A\\ 2 \ Y
Regulator Assembly
Figure I April 7169
Paqe 4
-
FIGURE
ITEM NO.
I-
I
2
3
4
5
6
7
8
9
IO
I I
12
13
14
15
16
17 18
19
20
21
-22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
-41
-42
-43
44
45
HOBART P
QD
EMOTOR GENERATOR DIVISION a : z HOBART BROTHERS COMPANY “c b . I ,,R
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
HOBART NOMENCLATURE
PART NUMBER 1234567
430467
430472
430464
430465
430466
ICZ-188-O
400694
20RT-352-2
BTRY-IO-16
402302
w-10658-7
400760-2
400741-12
ICZ-93B
W-10658-8
400741-5
400741-6
400741-4
W-10827-8
BTRY-128-I
402461-l
400072- 16
400176-3
439471
430474
430341
430473
402358
401563-2
401563-3
W-9712-30
400698- I
ICZ-63
ICZ-60
402357
REGULATOR ASSEMBLY
.CHASSIS ASSEMBLY, SENSING & PRE AMP
..BOARD ASSEMBLY, HIGH PHASE SENSING
. . . BOARD SUB-ASSEMBLY, PlN
. ..BOARD
. . ..PIN. TERMINAL ~88245 2730C
. . . RELAY v89265 KHPl7D41
m . . DIODE, POSITIVE v58849 S2040
. . . DIODE v84970 VR-BOB
. . . TRANSISTOR ~80211 MM4007
. ..CAPACITOR. TUBULAR ~76149 MTA2OD30
. ..TRANSISTOR
. . . RESISTOR
0.. DIODE, SILICON V79500 IN4820
. . . CAPACITOR, TUBULAR vi'6149 MTA3D50
. . . RESISTOR
. . . RESISTOR
. . . RESISTOR
. ..RESISTOR
. ..DIODE
..m CAPACITOR v93790 BR250-50
. ..RESISTOR
.v.TERMINAL, TONGUE RING
..BRACKET, MOUNTING
. . BRACKET, MOUNTING
.-BRACKET, MOUNTING SENSING
= = PANEL, CHASSIS
..NAMEPLATE, ADJUST
..HOUSING, PIN CONNECTOR
..HOUSING, PIN CONNECTOR
. . RHEOSTAT V44655 H
..POTENTIOMETER ~44655 CLU-2521
430340
430470
402373
w- II597
ICZ-70
ICZ-97
401563-3
ICZ-105
ICZ-I28
430469
402342
. . REACTOR, FILTER ~86151 E3661-A
* . TRANSFORMER, DAMPING V86151 E3196-A
..TRANSFORMER, HIGH PHASE V86151
40-8587
.CHASSIS ASSEMBLY, LINE DROP COMP.
. . CHASSIS
. . NAMEPLATE, LINE COMPENSATION
..KNOB, POINTER ~75376 S-292-3L
. . SWITCH, ON-OFF ~15605 7610 K2
. . REACTOR, LINE DROP V86151 E-3963
..HOUSING, PIN CONNECTOR
. . RHEOSTAT, TRIPLE TANDEM ~44655
H- IO-F2-T3
. . RHEOSTAT, TRIPLE TANDEM ~44655 6610
.CHASSlS, REGULATOR
'REACTOR, REGULATOR v96682 70-8532
-ITEM NOT ILLUSTRATED
April 7/69
EFF
UNITS
per
ASSY
I
43
4
2
I4
4
6
4
4
2
3
I
I
3- I
Page 5
-
_ . T~.i .- _ - ^ -I
.; I :.
FOBART z
QQ
;MOTOR DENiRitOR DlVlSION a j
.: HOBART BROTHLRS COMPAW % I c
*. Ia+
FIGURE
ITEM NO.
l-46 430476
47 W-9746-9
48 ICZr74
49 30GH-734
50 W-9712-9
51 H F-745
52 l6DA-2162
53 370141
-54 25MS-328
55 402376
-56 W-l 1166-2
-57 HF-240 1
-58 401564-2
-59 401564-3
OPERATION AND MAINTENANCE MANUAL TM-146
STATIC VOLTAGE REGULATOR, PART NO. 430467
HOBART NOMENCLATURE
PART NUMBER 1234567
. INSULATOR, RESISTOR . RESISTOR, ~44655 0205
.INSULATOR, RESISTOR
. BRACKET, RHEOSTAT
*RHEOSTAT V44655 H
*NAMEPLATE
. KNOB7 RHEOSTAT ~44655 5150
.BRACKET, MOUNTING PLUG
*SPACER
. RECEPTACLE v89709 MS-1302A-22-14P
. FUSE, 5 AMP
, FUSEHOLDER V759 15 342001
.HOUSING, SOCKET CONNECTOR
.HOUSING. SOCKET CONNECTOR
-ITEM NOT ILLUSTRATED
3- I
Page 6
EFF
UNITS
per
ASSY
2
2
:. . : .,
April 7/69
Cover TM-146Table of ContentsList of Effective Pages1-1 Operation -Introduction1-2 Description1-3 Installation and Preparation1-4 Operation2-1 Maintenance -Description and Operation2-2 Trouble Shooting2-3 Removal and Installation2-4 Adjustment and Test2-5 Inspection and Check2-6 Cleaning and Painting2-7 Repair3-0 Table of Contents3-1 Illustrated Parts List