OPERATION AND MAINTENANCE MANUAL TM-146 · 1997. 10. 3. · OPERATION AND MAINTENANCE MANUAL TM-146 STATIC VOLTAGE REGULATOR, PART NO. 430%' CHAPTER I OPERATION SECTION I - INTRODUCTION

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.

:!*,

:


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

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FOBART L a

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gMDTOR GENERATOR DIVISION :

‘c 2 HOBART BROTHu?S COMP.wY

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OPERATION AND MAINTENANCE MANUAL TM- 146


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FOBARZ D I m “0 QD

EMOTOR GENERATOR DIVISION

2 HOEIAAT BROTHERS COMPANY % *. ,,,d


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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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

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Page I

.

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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OPERATION AND MAINTENANCE MANUAL W-146.


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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

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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.

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iMOTOR GENERATOR DIVISION

b i HOBART BROTHERS COMPANY b . ,,,+*

OPERATION AND MAINTENANCE MANUAL TM-l'+6


Voltage Regulator Schematic

Figure 2

l-2

Paoe 4

April 7169

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~MOTQR GENERATOR DIVISION

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(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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(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



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


STATIC VOLTAGE REGULATOR, PART NO. MO'+67

, ,_ _*’

April 7/69

;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

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jMOTOR GENERATOR DIVISION

z 2 HOBART BROTHERS COMPANY B . ,,,d

OPERATION AN0 MAINTENANCE MANUAL TM-146


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gYOTOR GENERATOR DIVISION

3 z HOBART BROTHERS COMPANY

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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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~“OTOR GENERATOR DIVISION

2 HOBART BROTHERS COMPANY *c *. ,,,d


STATIC VOLTAGE REGULATOR, PART NO. 'WI467

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April 7/69

MOTOR GENERATOR DIVISION HOBART BROTHERS COMPANY



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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(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





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 ::

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OPERATION AND MAINTENANCE MANUAL Tt4;1@6


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

HOBART

D


d HOBART BROTHERS COMPANY ,,I+?


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

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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

HOBART 0 1

QD

;MOTORGENERATOR DIVISION l

c 2

HOBART BROTHERS COMPANY

4 * . 8,J

OPERATION AND MAINTENANCE MANUAL TM- 146



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 ::

QD

iMOTOR GENERATOR DIV1810N

‘: E HOBART EROTHERS COMPANY cc *. (I,,+*


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




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


OPERATION AND MAI NTENACNE MANUAL TM- 146


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+



(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

_, __ _ ^ . . _.

GENERATOR DIVISION HOBART BROTHERS COMPAN”


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




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


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, 500 mfd, l5v


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


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, 470 ohms, l/2 watt


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


DESCRiPTlON



Potentiometer, 2500 ohms,

2 watt

Potentiometer, 2500 ohms,

2 watt



Rheostat, 1500 ohms, 25 watt


Rheostat, 250 ohms, Triple

Tandem

Rheostat, IO ohms, Triple

Tandem

Resistor, 47 ohms, I watt

Saturable Reactor

Saturable Reactor

Saturable Reactor

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





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”


STATIC VOLTAGE REGULATOR, PART NO. '+3O'M7

VISION

-> ‘a,

-. -I

: ,’ __ ”

2-5

Dc.rrr c

April 7/69

rOBART e s

QD


“0 i HOBART BROTHERS COMPANY

*c Q. &?+




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 * . &


STATIC VOLTAGE REGULATOR, PART NO. WOQ67

2-6

Paae 2

_--I. . . .\

. ., .\ . ..\. 1

.._, . ../ -d

April 7/69

FOBART I I QB


“c 2 HOBART BROTHERS COMPANY

% 6 Q. &‘




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.(\ &-


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 &-



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-



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



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


. . 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


. . 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



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

Documents

OPERATION AND MAINTENANCE MANUAL TM-146 · 1997. 10. 3. · OPERATION AND MAINTENANCE MANUAL TM-146 STATIC VOLTAGE REGULATOR, PART NO. 430%' CHAPTER I OPERATION SECTION I - INTRODUCTION