Subaru R650 Service Manual

PUB-GS0455 Rev. 8/98

CONTENTS

Section Title

1

.

SPECIFICATIONS

2

.

PERFORMANCE CURVES

2-1 AC Output 2-2 DCOutput

3

.

FEATURES

4

.

GENERAL DESCRIPTION

4-1 Component Identification

4-2 Location of Serial Number. Specification and

Specification Number

5

.

CONSTRUCTION AND FUNCTION OF THE GENERATOR

5-1 Construction 5-2 Function of Each Component 5-3 Description of Generator Operation 5-4 Electronic Ignition System

6 . SAFETY PRECAUTlONS

7

.

RANGE OF APPLICATIONS

7-1 ACOUtput 7-2 DC Output

............................................

........................................

................................

........................................

OF

THE GENERATOR

............................

................................

......................................

.........................

.....................

............................

.................................

..............................

........................................

Page

............

.....

12 14

15 16

16

18

1

2 2

2

3 4

4

7

8 8

9

8 . MEASURING PROCEDURES.

8-1 Measuring Instruments 8-2 Measuring AC Output 8-3 Measuring DC Output 8-4 Measuring Insulation Resistance

9 . CHECKING FUNCTIONAL MEMBERS

9-1 Control Panel 9-2 Stator

9-3 Rotor 9-4 Ignition Coil

9-5 Condenser 9-6 Diode Rectifier

9-7 Micro-Switch

10

.

DISASSEMBLY AND ASSEMBLY

10- 1 Preparation and Precautions 10-2 Special

10-3 Disassembly Sequence 10-4 Assembly Procedure

10-5 Carburetor 10-6 Frequency Changeover System

............................................

Tools

......................................

.......................................

........................................

.....................................

......................................

for Disassembly and Assembly

........................................

.............................

...............................

..........................

...........................

...............................

.................................

.........................

........................

......................

..............

20 20

22

22 22

24 24

26 28 29

29 29

30

31 31 31

32 47

58 61

Section Title

11

.

TROUBLESHOOTING

11

.

1 Engine does not

-2

11

11-3 11

Voltmeter does

No

AC output

No

DCOutput

-4

Output voltage

but generator won't work omload

...................................

start

or engine does not run normally

not

work

or

pilot

lamp

does not turn on

.......

.

....................................

.....................................

is

normal

at

no.load.

.....................

Page

63 63

66

69

12 . CIRCUIT

12- 1 50Hz/60Hz Variable Type 12-2 60Hz-120V Type

DIAGRAMS

....................................

............................

..................................

71 71

71

1

SPECIFICATIONS

c;

ENGINE

GENERATOR

Forced air-cooled, 4-stroke, side

gaso

I

i

ne engine

Displacement Fuel tank capacity

Oil

pan capacity

Ignition system

Starting system

.

Rated continuous

operating hours Type 2-pole revolving field type

Exciting system

Voltage regulating system

Maximum output Rated output

I

78

cc

(4.76 cu. in.)

I

2

lit.

(0.53

1

350

cc

(0.75 U.S. pints)

1

Solid

state

1

Recoil starter Approx. 4.5 hours (50Hz)

Approx. 4.0 hours (60Hz)

I

Self-exciting

Condenser type

I

550W/650W 45OW/550W

U.S.

gal.)

ignition

I

valve,

65oW

55oW

Dimensions

AC frequency AC voltage

DC output

AC receptacle

DC terminal Over current

protection

Voltmeter Pilot lamp

(L

x

W x H)

I

.

-

I

1

I

5OHz/6OHz

12V-1OOW (8.3A)

Standard: 2 (Special:

A

couple

Circuit breaker Standard

Standard

370

x 265 x 345 mm

(14.6 x

1

10.4

ea.

ea.)

x 13.6 in.)

~

I

60Hz

-1-

2.

PERFORMANCE CURVES

2-1

AC

OUTPUT

Hz

62 61

E

"I

3

K

LL

60 59

52 51 500 50

49 400

V

A

240 230 220 21

0

VIIIIIIIIIIIJo

0

0.5

1

1.5 2 2.5

CURRENT

-

A

W

I-

13

n

k

13

0

T

600

$

f

,"

300

200

k

100

t;

0

>

.i.-

Hz

162 61

60 59

120

110

600

w

500

400

1

300

I-

200

2

L

5

100

0

2-2

V

W

>

U

I-

50Hz/60Hz-220V

OUTPUT Max.

...

Rated

DC

. .

OUTPUT

Type

550W/50Hz, 650W/60Hz 450W/50Hz, 550W/60Hz

0

60

Hz-1

OUTPUT

Max.

Rated

Rated voltage

Rated current

Rated output

20V

Type

..............

.............

.650W .550W

.............

............

12V

8.3A

1OOW

-2-

3.

Exhaust Fan Cooling System for low body temperatures, low noise, longer engine life

and

reliable per-

formance.

0

Large

78

cc 4-Stroke Engine provides enough power for constant

Simple One-Touch Engine Control Switch with the engine and fuel on/off levers and choke

550W

(at

60

Hz)

rated output.

all

integrated

into one switch.

0

Easy and Reliable Starting with pointless ignition. This generator is also a brush-less type generator for

maintenance-free operation.

0

Simple Design

0

Compact and Lightweight with an easy one-hand carrying handle grip. This generator also offers a high

for

a clean appearance and easy maintenance.

power-to-weight ratio and economical operation.

0

Circuit Breaker Protection for safe operation. Replacement of fuses is not necessary in case

0

Unique Dual Output Design

so

that two separate

A.C.

and D.C. electrical appliances can be used at the

of

an overload.

same time.

0

Frequency Changeover Switch enables changing output frequency from

0

Optional Oil Warning System automatically stops the engine if the oil level drops below the lower limit.

50

Hz

to

60

Hz.

(Factory Option)

0

Resistor Spark Plug

0

Standard Tools are attached in the base plate for easy maintenance.

is

used as standard to prevent radio frequency noise.

0

AC Voltmeter is a standard equipment for monitoring output voltage.

-3-

4.

GENERAL DESCRIPTION

4-1

COMPONENT IDENTIFICATION

MUFFLER COVER

MUFFLER

OF

THE GENERATOR

HANDLE

.AIR

AIR

CLEANER

COVER

ENGINE

Fig.

4-

1

FUEL TANK

,GENERATOR

Fig.

-4-

4-2

Fig.

MUFFLER COVER

4-3

FREQUENCY ADJUSTING UNIT

(60Hzi120V TYPE)

FREQUENCYCHANGEOVERUNIT

(50Hz/60Hz VARIABLE TYPE)

Fig.

4-4

SPARK PLUG

-5-

FRONT HOUSING

/

RECOIL

STARTER

\

Fig.

4-5

RUBBER (FOR

AIR

I

CARBURETOR

PIPE

VENT)

BASE

PLATE

Fig.

-6-

4-6

4-2

LOCATION OF

SERIAL

NUMBER, SPECIFICATION AND

SPECIFICATION NUMBER

The serial number is stamped on the crankcase at the opposite side of the carburetor and also stamped on the label stuck above the oil filler cap. The specification and specification number are shown on the nameplate located on the rear cover. Always specify these numbers when inquiring about the generator or ordering parts in order to get correct

parts and accurate service.

SERIAL

NUMBER

Fig.

4-7

-7-

5.

CONSTRUCTION AND FUNCTION OF THE GENERATOR

5-1

CONSTRUCTION

FUEL TANK

SPARK PLUG

THROUGH BOLT CYLINDER

RECOIL STARTER

BALL BEARING

FIELD CORE STATOR

COIL

STATOR CORE COOLING FAN VIBRATION ISOLATOR

Fig.

5-

1

CRANKCASE

CRANKSHAFT

-a-

5-2

FUNCTION

OF

EACH COMPONENT

5-2-1

(1)

The stator consists of a laminated silicon steel sheet core, a main coil and condenser coil which are wound in the core slots.

AC and DC output are taken out from the main coil.

(DC output is taken out from the part of main coil which is in the middle of the main coil.) The condenser coil excites the stator field coil which generates AC output in the main coil.

(2)

The condenser is mounted on the rear housing and is connected to the condenser coil which is wound in the

stator. The condenser coil magnetizes the rotor which increases the density of magnetic flux.

(3)

The rectifier is also mounted on the rear housing and it converts AC current output from the main coil

DC current. The

(4)

GENERATOR

STATOR

CONDENSER

RECTlFlCER

DC

ROTOR

C

Fig.

5-2

output from the diode of this rectifier is connected to the DC terminal.

‘IFIER

to

The rotor consists of a lamination silicon steel sheet core and field coil which is wound over the core. DC current in the filed coil magnetizes the steel sheet core. Two permanent magnets are provided at from the poles for the primary exciting action. A securely mounted fan is pressure-fitted on the end

of

the rotor shaft to cool the individual coils, iron cores, rectifier, and other integral parts. Cooling air from the fan is drawn in lation vents in the rear housing, and is discharged from the exhaust port in the front housing.

(5)

CONTROL PANEL

The panel on the front of the housing has a receptacle with out with a male plug. DC output is taken out from the red (positive, and black (negative, Control switch, circuit breaker, voltmeter and pilot lamp are installed on the control panel.

a

ground terminal and AC output

-)

terminals.

from

90

degrees

the venti-

is

taken

+)

Fig.

5-3

I

-9-

Fig.

5-4

5-2-2

(1)

ENGINE

CYLINDER

and

CRANKCASE

The cylinder and the crankcase of the engine are of a one-piece aluminum die-cast design. The cast iron cylinder liner is molded inside the cylinder. Both the intake and exhaust ports are positioned at the lateral side of the cylinder and these parts are formed by using a mold with die-cast cores. The crankcase has its joint face located on the generator side.

(2)

MAIN BEARING COVER

The main bearing cover is aluminum die-cast and is mounted on the generator side. By removing the main bearing cover, the interior

(3)

CRANKSHAFT

of

the engine can be inspected.

The crankshaft is constructed of forged carbon steel. The crankpin is induction-hardened and has a pressfitted crank gear located on the generator side of the engine.

(4)

CONNECTING

ROD

and

PISTON

The connecting rod is constructed of forged aluminum alloy with both the large and small ends utilized as bearings. The oil scraper and large end cap are molded together. The aluminum alloy casting piston has two compression rings and one oil ring.

(5)

CAMSHAFT

The camshaft is constructed of special cast iron and has intake and exhaust valve drive cams, each of which

An

engages with the cam gear.

exclusive aluminum alloy is used on each end of the camshaft in the place of

bearings.

(6)

VALVE ARRANGEMENT

The intake valve is installed at the oil port side and the exhaust valve at the generator side.

(7)

CYLINDER HEAD

The cylinder head is die-cast aluminum and has Ricardo type combustion chamber featuring greater volume capacity for improved combustion efficiency. For easier spark plug maintenance, the cylinder head is positioned at an angle to allow greater access.

(8)

GOVERNOR

The centrifugal weight type governor ensures constant engine speed, regardless of load fluctuations (the governor is mechanically linked to the governor drive gear).

(9)

EXHAUST FAN COOLING SYSTEM

Instead of blowing outside air on the engine, the Exhaust Fan Cooling System

(See

Fig.

5-5.)

of

this generator intakes the

cool air and forces the hot air outside from one outlet.

This keeps the body temperature lower for greater safety and extends service life.

(10)

LUBRICATION SYSTEM

The moving and sliding parts inside the engine are lubricated with the oil scraper fitted on the connecting rod.

As

the crankshaft rotates, the connecting rod moves up and down and the oil scraper moves in conjunction with the connecting rod movements to scrape up oil in the crankcase and splash it over the surfaces of the moving and sliding parts.

-

10-

(1

1)

IGNITION

A

flywheel/magneto igntion system is employed with the ignition timing set The magneto is composed of the flywheel and ignition coil with the flywheel mounted on the rotor shaft. The ignition coil is fitted to the front housing.

(12)

CARBURETOR

at

23'

before top dead center.

The horizontal draft type carburetor

celeration, low fuel consumption, and superior output. [For details concerning carburetor construction, see the paragraph dealing with carburetor construction and disassembly/assembly (Page

(13)

AIR CLEANER

The air cleaner

is

a semi-wet type and contains a sponge element.

is

installed

so

that the engine will provide excellent starting, good ac-

59).]

Fig.

-

5-5

11

-

5-3

DESCRIPTION

OF

GENERATOR OPERATION

INITIAL EXCITATION

PERMANENT MAGNETO

ROTOR

\

I

/t.

I

Y-"!

I

DIODE

5-3-1 GENERATION OF NO-LOAD VOLTAGE

When the generator starts turning the permanent magneto built-in to the flywheel, it generates 1 to

AC

voltage in the main coil and condenser coil.

The condenser coil is connected to a condenser.

@

minimum current magnetic force of the rotor's magnetic pole is intensified. When this magnetic force is intensified, the respective voltages in the main coil and condenser coil rise. Current increases, with the magnetic flux density of the rotor's magnetic pole increasing further. Also, the main coil voltage and condenser coil voltage increases. These voltage continue rising as this process is repeated.

flows

I

A

I""""l

in

the condenser coil. At this time, small flux is produced, with which the

Fig.

'

MAIN COIL

CONDENSER

5-6

So,

when a voltage

COIL

is

generated

@

flowing in the condenser coil

in

the condenser coil,

4V

of

As

current flows in the condenser coil, the magnetic flux density

duced in the field coil when the magnetic flux density varies. Successively,

DC

rectifiers connected to both ends of the field coil, and current, the rotor core is magnetized, allowing the generator to output steady voltage.

When generator speed reaches specification), the current in the condenser coil and field coil increases rapidly. This acts to stabilize the respective coil output voltages. If generator speed further rises to the rated value, the generator output voltage will reach the rated value.

5-3-2 VOLTAGE FLUCTUATIONS UNDER LOAD

When load current @ flows from the generator to the electrical equipment, the magnetic flux which duced as current @ flows in the main coil, this flux serves to increase current coil. With current flowing in the field coil increases, and the generator output voltage is prevented from decreasing.

@

increased, the magnetic flux density across the rotor core rises.

2000

to

2300

rpm

-

(50

12-

current @ flows in the field coil. With this

Hz specification) or

in

the rotor changes.

AC

current is rectified by the

3000

@

flowing in the condenser

AC

voltage is in-

to

3300

rpm

As

a result, the current

(60

is

Hz

pro-

5-3-3

DC

OUTPUT

DC output is taken out from the main coil and is fed to the diode at which time the output undergoes full-wave rectification prior to being supplied to the

to

load connnected

fier works

to

allow the current to flow in tion but does not allow the current to flow in direction as shown in Fig. Fig.

5-8

shows the DC output circuit of the genera-

the generator. The diode recti-

@

direc-

(@

5

-7.

tor.

in

DC voltage is generated

A

voltage in

is higher than that in

the main coil; when the

Cy

current

@

flows in the direction shown in the figure while no current flows between cut off by the diode tioned, if the voltage in current

@

flows in the direction figure, with no current flowing between This is because the diode between

A

and

B.

C

and B because current is

D2.

Contrary to the aforemen-

C

is higher than that in

as

shown in the

A

Dl

cuts off the current

As

a result, voltage generated be-

and

A,

B.

tween the DC terminals has a waveform with two

peaks in one cycle, as in the case of the output wave-

form with two peaks in one cycle, as in the case of the output waveform shown in Fig.

5-9.

MAIN COIL

A

B

-0

-@

Fig.

Dl

5-7

+

BETWEEN A AND

C

BETWEEN

AND

B

Fig.

CURRENT FLOWING FLOWING BETWEEN

A

AND

5-9

OUTPUT WAVEFORM

@

B C

CURRENT BETWEEN

Fig.

AND

5-8

@

B

-

13-

5-4

ELECTRONIC IGNITION SYSTEM

The electronic ignition system features a power transistor as the current control element. Therefore, the igni-

tion system is an electronic contact point-free type that operates with the power transistor impulses control-

TIC

ling the current. This system is also called

(transistor igniter circuit) and is virtually free of ignition failure which generally results from contamination of the contact points, a typical problem with contact type ignition systems. Because this ignition system has no contact points, it is not affected

As

nants. The wheel which is press-fitted on the rotor shaft

a result, this electronic ignition system ensures sure and positive ignition with reduced maintenance.

TIC

mechanism consists of a transistor-incorporated ignition coil and a permanent magneto built-in fly-

of

the generator.

I

//////

a

0

by

moisture, oil, dust, or other contami-

IGNITION COIL

"

IGNITION TIMING DETECTING CIRCUIT

(1)

When the permanenet magneto built-in flywheel starts rotating, power is generated in the primary coil of of the ignition coil and current flows to the resistor

a

I-

Fig.

5-

10

@

FLYWHEEL

COOLING FAN

.

>

a

*

SPARK PLUG

From the resistor, current flows to the power transistor. With this current, the power transistor turns on,

@

.

releasing current

(2)

As

the flywheel comes to the point of ignition, the ignition timing detecting circuit is activated while the

current

@

is flowing through the circuit.

This stage corresponds to the closing of contact points.

When the ignition timing detecting circuit is activated, the signal transmitter transistor actuates with cur-

@

rent d flowing. When current

As

cut quickly.

a result, high voltage is produced in the secondary coil and this voltage is applied simul-

taneously to the spark plug which ignites for ignition. This stage corresponds to the opening

starts flowing, current @ flowing through the power transistor is

of

points.

contact

-

14-

SAFETY

6.

1.

Use

extreme caution near gasoline. A constant danger

Do

not fill the fuel tank with gasoline while the engine is running.

PRECAUTIONS

of

explosion or fire exists.

Do

not smoke or use open flame near the fuel tank. Be careful not to spill fuel when refueling. If spilt, wipe it and let it dry before starting the engine.

2.

Do

not place inflammable materials near the generator.

Be careful not to put gasoline, matches, gunpowder, oil cloth, straw, trash and any other inflammables

near the generator.

0

Operate the generator at least 1 meter

3.

Do not operate the generator in a room, cave or tunnel. Always operate

(4

feet) away from a building or wall.

in

a

well-ventilated area.

Otherwise the engine may become overheated and also, the poisonous carbon monoxide contained in the

1

m

(4

exhaust gases will endanger human lives. Keep the generator at least

feet) away from structures or facilities during use, and always operate it with the exhaust pipe directed toward the open-air or where good ventilation is assured.

4.

Operate the generator on a level surface.

0

Do not operate the generator on a inclined surface.

0

Do not move or carry the generator while it is running.

5.

Do

not operate with wet hands or

in

the rain.

Severe electric shock may occur. If the generator is moistened by rain or snow, wipe it and fully dry it before starting.

0

Do not pour water over the generator directly nor wash it with water. If the generator is wet with water, the insulations will be adversely affected and may cause current leakage and electric shock.

6.

Do not connect the generator to the residential power source.

This could result in a malfunction of, or damge to the generator or appliance to which it is connected or could even lead to fire.

7.

Do

not cover the generator with a carton,

a

box

or other cover while

it

is running.

-15-

7.

7-1

AC

OUTPUT

OF

APPLICATIONS

Generally, the rated power of it. The electric power required for operating an electrical appliance is not always equal to the amount work that can be done by it. Electrical appliances generally have a label showing their rated voltage, frequency, and power consumption (input power). The power consumption of an electrical appliance is the power necessary for using it. When using a generator for operating an electrical appliance, however, the power factor and starting current must also be taken into consideration.

Determine the capacity of your generator from the power required for operating electrical appliances referring to the followsings:

(1

)

Incandescent lamps, hot plates, etc. with a power factor

Total power consumption must be equal to or less than the rated output of generator.

A

Example:

(2)

Fluorescent lamps, mercury lamps, etc. with a smaller power factor

Select a generator with a rated output equivalent to Example:

NOTE:

generator with a rated output power

A

generator with a capacity of

A

generator with a rated output of

Wattage of the fluorescent lamp generally does not indicate the power consumption but indi-

cates the output of the lamp. Therefore, if the fluorescent lamp has no special indication as to

the power consumption of input power, efficiency should be taken into accounts as explained in

Item

5

on the following page.

an

electrical appliance often refers to the amount of work that can be done by

1

.O

of

500W can light five lOOW lamps.

1.2

1

OOW

to 2 times the power consumption

to

160W is necessary for lighting a 80W fluorescent lamp.

500W

can light three to five 40W fluorescent lamps.

of

the load.

of

(3)

Electric tools, etc. that are driven by a motor

1.2 to 3 times large power consumption of a motor-driven tool is required for starting. Select a generator

with a maximum output Example:

(4)

Water pumps, compressors, etc. that are driven by a motor and are initially

3

to 5 times large power is necessary for starting. Select a generator with

load. Example:

NOTE

A

300W motor-driven drill requires a generator with a maximum output of

more.

A

water pump with a power consumption

of

put

I:

Motor-driven appliances mentioned in capacities only when starting their motors. Once their motors are started, the appliances consume about by the generator can be used for other electrical appliances.

2:

Motor-driven appliances mentioned in er depending on the kind of motor and start-up load. If mum generator capacity, select a generator with a larger capacity.

1200 to 2000W or more.

1.2

to 3 times large

1.2

to 2 times their rated power consumption

to

the load.

Items

of

400W requires a generator with a maximum out-

3

and 4 required the aforementioned generator

3

and 4 vary in their required motor starting pow-

400

to 9OOW or

loaded

3

to

5

times large output of

so

that the excess power generated

it

is

difficult to determine the opti-

-

16

-

(5)

Appliances without any indication

Some appliances have no indication as to power consumption; but instead the work load (output) is indicated. In such a case, power consumption is to be worked out according to the numerical formula mentioned below.

as

to power consumption

(Output of electrical appliance)

(Efficiency)

Efficiencies of some electrical appliances are as follows:

Single-phase motor Three-phase motor Fluorescent lamp

Example

r

1

:

A

40W fluorescent lamp means that its luminous output is 40W. Its efficiency is cordingly, power consumption will be 40 power consumption value capacity of a generator. In other words, a generator with a rated output of 500W capacity can light four to seven 40W fluorescent lamps.

2:

Generally speaking, a 400W motor means that its work load is 400W. Efficiency of this me

tor is 0.7 and power consumption will be 400

motor-driven tool, the capacity of the generator should be multipled by

as explained in the

ELECTRIC DEVICES

Incandescent lamp, electric heater, etc.

...............

................

Item

~ ~

=

0.65

0.7

of

57W by 1.2

3.

(Power consumption)

0.6

-

0.9

Oa7'

-

0.8

+

The smaller the motor, the lower the efficiency.

0.7 = 57W.

-

2

and you will get the figure of the necessary

+

RANGE

50

Hz

As

explained in

0.7 = 570W. When this motor is used for a

OF

APPLICABLE LOADS

Up to 550W Up to 450W

60

Item

1.2

Hz

2,

multiply this

to 3 and 570W

0.7

and ac-

Fluorescent lamp, mercury lamp, etc.

Motor-driven tools etc.

Pump and compressor drive motors

NOTES: Wiring between generator and electrical appliances

Allowable current of cable

1.

Use a cable with an allowable current that

If

trical appliance).

cable will become excessively heated and deteriorate the insulation, possibly burins

7-2

Table Cable length

2,

If a long cable that the input voltage to the load (electrical product) decreases.

aged.

Trable

shows cables and their allowable current

7-2

shows voltage drops per

the input current

is

used, a voltage drop occurs due to the increased resistance in the conductors

100

Up to approx. 150W

Table

7-

1

is

higher than the rated input current

is

higher than the allowable current

for

meters

of

cable.

your reference.

As

a result, the load can be darn-

Up to approx. 450W Up to approx. 350W

Up to approx. 400W Up to approx. 350W

Up to approx. 180W

of

the load (elec-

of

the cable used, the

it

out.

so

-

17

-

Table

7-2

Voltage decrease indicates as V

R

means resistance

I

means electric current through the wire

2

means the length of the wire (m).

(5211

00

=

-

xRxIx!?

100

m)

on the above table.

(A).

The length of the wire indicates round length, it means twice the length from generator to electrical tools.

7-2

DC

OUTPUT

When the generator is employed to recharge batteries, care must be exercised about the specific gravity electrolyte in each battery case.

7-2-1

The specific gravity changes with temperature; therefore, it is converted to another, corresponding to

MEASURING THE SPECIFIC GRAVITY

S20

=

St

+

0.0007

(t

-

20)

OF

ELECTROLYTE:

20°C.

where

S20

=

7-2-2

Specific gravity corresponding to

St

=

Measured value

t

=

Temperature at time

REMAINING CAPACITY ESTIMATED WITH REFERENCE TO THE SPECIFIC GRAVITY ELECTROLYTE:

of

measurement

20°C

OF

of

SPECIFIC

GRAVITY

(2OOC)

1.260

1.240

1.220

1.200

1.180

1.160

1.140

REMAINING BATTERY

(%I

100

87

75

62

50

37

25

Table

7-3

-

18

-

REMARKS

Good charged condition

Charging

Immediate charging

is

necessary.

is

necessary.

7-2-3

BATTERY CAPACITY

The battery capacity is expressed in units of ampere-hour

of

providing one ampere

7-2-4

If

SIMULTANEOUS USE

you

use the

AC/DC

current for one hour.

OF

THE AC/DC OUTPUT

output simultaneously in this generator, be careful not

sumption.

50

60

NOTE:

Hz

Max.

output

of

DC

below below

is

lOOW

250W

350W

(12V

x

8.3A).

(AH).

One

AH

stands for the capacity capable of

to

exceed the total power con-

-

19-

8.

MEASURING PROCEDURES

8-1

MEASURING INSTRUMENTS

8-1-1

AC voltmeter is necessary. The approximate AC voltage ranges of the voltmeters to be used for various

types of generators are as follows:

0

8-1

AC ammeter is necessary. An AC ammeter with a range that can be changed according to the current rating of a given generator is most desirable. (About

1 OA, 20A,

VOLTMETER

to 150V : Type with an output voltage

or 12OV

to 300V : Type with an output voltage

230V

or 240V

-2

AMMETERS

1

OOA)

of

1

1OV

220V,

Fig.

8-

I

Prepare a DC ammeter which has a scale range

15A.

8-1-3

Frequency range: About 45 to

NOTE:

FREQUENCY METER

Be careful

voltage range.

of

the frequency meter's input

65

Hz.

of

9

Fig.

8-2

-

20

-

Fig.

8-3

8-1-4 CIRCUIT TESTER

Used for measuring resistance, etc.

8-1-5 MEGGER METER

Used for measuring generator insulation resistance.

Select one with testing voltage range of

500V.

I

Fig.

I'

8-4

8-5

,,

8-1

-6

TACHOMETER

Use a contact-less type tachometer.

-

21

CONTACTLESS TYPE

\

I

Fig.

8-6

I

-