Westerbeke 4.5 KW BGC -60Hz Manual del operador Pagina 67
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GENERAL INFORMATION AND CARE OF THE GENERATOR
Use
of
Electric
Motors
The power required
to
start an electric motor is considerably more than
is
required
to
keep n running after
n
is
started. Some motors require much more current
to
start than others. Split-phase (AC) motors require
more current
to
start, under similar circumstances, than other types. These motors are commonly used on
easy-starting loads, such as washing machines, or where loads are applied after the
motor
is started, such
as small power tools. Because they require 5
to
7 times as much current
to
start as
to
run, their use should
be avoided, whenever possible, if the electric motor is
to
be driven
by
a small generator. Capacitor and
repulsion-induction motors require from 2
to
4 times as much current
to
start as
to
run. The current required
to start any
motor
varies with the load connected
to
n.
An
electric
motor
connected
to
an air compressor,
for example, will require more current than a
motor
to
which no load is connected.
In general, the current required
to
start 115-Volt motors connected
to
medium starting loads will be ap-
proximately as follows:
MOTOR
AMPS
FOR
AMPS FOR
SIZE RUNNING
STARTING
(HP)
(Amperes) (Amperes)
1/6
3.2
6.4
to
22.4*
1/4
4.6
9.2
to
32.2*
1/3
5.2
10.4
to
72.8*
1/2
7.2
14.4
to
29.2
3/4
10.2 20.4
to
40.8
1 13 26
to
52
* Note that in the above table the maximum "Amps for
Starting" is more
for
some small motors
than
for
larger ones. The reason for this
is
that the hardest starting types (spin-phase) are not
made in larger sizes.
Because the heavy surge
of
current needed for starting motors
is
required for only an instant, the generator
will not
be
damaged if n can bring the motor up
to
speed in a few seconds. If difficulty is experienced in
starting motors, turn off all other electrical loads and, if possible, reduce the load on the electric motor.
Required
Operating
Speed
Although individual units may vary slightly, the normal voltage and frequency
of
typical 6O-(50-)Hertz engine-
driven generators described in this manual are shown on the chart on the next page.
Run the generator
at
first with
no
load applied, then at half the generator's capacITy, and finally loaded
to
its
full capacity as indicated on the generator's data plate.
See the rpm/Hertz/frequency chart on the next page.
Westerbeke
Generators
64
- WESI'ERBEKE 1
- Engines & Generators 2
- SAFETY PRECAUTIONS 3
- I WESTERBEKE 5
- Generators 6
- Understanding 8
- Ordering 8
- Marine Gasoline Generator 12
- Pressure 12
- Westerbeke Generators 12
- & Stroke 17
- 90 - 125 (Ampere-Hours) 19
- ± 3 Hertz (5%) 20
- MOUNTING 23
- """u"i 24
- ." 25
- :' 26
- 35 Ib-in, or 0.27 27
- --"..::---~~-~~.:::.-.: 28
- -:::::=:~--:-d 28
- _'-'...\ 28
- ELECTRICALLY 29
- DEFLECTION 30
- Automatic Shutdown 31
- + ) battery connection 32
- 4.0KW, and page 17 for the 33
- (NORMRL 36
- C) before ap 37
- + path for voltage to 38
- SCREENED 41
- CLEANER 41
- IIPPIIOII£II 42
- ~~~::-t--Magnet 43
- IGNITION 44
- + and - 45
- O.C.Charge 46
- 't~ 47
- ;l' 48
- . " 49
- 1~~I~:r~25f~~2r~t~:t 50
- "r 52
- FUNCTION 53
- MANIFOLD 53
- PRESSURE 53
- CRAUSHAFT 55
- OVERHERT 56
- 44m#¥tlw*!2:o#i@> 57
- IlliI'III1T?" 58
- Westerbeke 59
- Crankcase 59
- '-'0 60
- 60
- 110v 50 Hz 61
- 220v 50 Hz 61
- '" 62
- ~WARNINGI 63
- "'" 64
- 1 b 4 3 65
- ,,--> 66
- 60 120 240 68
- + ) at overspeed switch 69
- H the bear 75
- -\--~~~ 76
- HuntinglBeculatjQo 77
- 75 Westerbeke Generators 78
- ~~~Yl~~~~~~~ 79
- 8(G Ii.SlW 80
- TIGMTEKIKG 80
- SEQUENCE 80
- 360'. The valves for 81
- 9.4 Ib·ft (0.7 - 1.3 kg-m) 81
- If batteries are 85
- 1.5 - 1.8 87
- YOUR NOTES 95
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