Back-up (stand-by)
Generators can
be set-up to go on
as soon as an
electric outage
occurs, giving you
uninterrupted
electrical service.
There are several
ways which your
system can make the
transfer ranging
from automatically
making the transfer
providing you with
uninterrupted
service to manually
making the transfer
where there would be
an interruption of
service. How you
choose to
make
the transfer depends
on you and your
needs.
Using only the Generator as a Grid Stand-by, to come on if your Utility Power fails. You would want to use a Transfer Switch or an Automatic Generator Start Relay (AGSR) which will allow you to have electric when there is a problem with your grid source. When the switch detects an outage it turns on the generator to provide you with electric and than shuts off the generator once your utility electric is restored. This method gives you basically uninterrupted service, meaning that once your electric source stops (no electric) the switch has to turn on the generator, the generator in turn has to stabilize before it can send electric to you. Meaning that you could be without electric for up to a minute or two. If you have equipment which need to have no interruption than you may want to consider using an inverter in place of the transfer switch.
Using the Generator
as a System Back-up,
to come on when
your system falls
below a certain
voltage and or when
there is no electric
from the Utility. In
this instance, your
system would include
a battery back-up
and your system
transfer would be
done by either an
Inverter or an
Automatic Generator
Start Relay.
Here, your main
source of electric
is the utility
company. When
you loose electric
from the grid, your
system switches to
the Inverter which
uses the batteries
to make your 120 VAC
electric. Once
your battery voltage
drops below a
certain voltage, the
Inverter or an AGSR
starts the
generator.
Once the batteries
reach a certain
voltage level or the
grid is back on
line, the generator
is shut off until it
may be required
again. With this
set-up, you could
incorporate Solar,
Wind and or
HydroElectric as
your main source of
electric, keeping
your batteries
charged and using
the inverter to
supply electric to
the house.
Using the Generator as a Back-up for your Solar, Wind and or HydroElectric System. This example can be used with or without a Utility connection. Your main source of electric comes from your own power plant, whether it be solar, wind or hydro. When your system has depleted your batteries to a certain level, your Inverter or AGSR turns on the generator and once the batteries are filled to a certain level, the generator is shut down. Some inverters will see if the Utility is available before it starts the generator.
When it comes to back-up / stand-by generators we prefer the stationary generators as oppose to the portable generators for a number of reasons. Mainly because they interface with both solar systems and with utility service and they can be started automatically as mentioned above. However, sometimes there are other considerations one must take into account and for this reason, I have attached an article by Bill Hoffman so that you can make up your own mind.
For Solar Electric System backup generators we have found that Kohler makes the best on the market. They run on either natural gas or propane by just making a few internal adjustments and can be started automatic so that there is no power outage. They are also the only generator on the market today, whose warranty isn't void if used with solar applications.
For Solar applications we recommend either the 8 or the 12 kilowatt models as they are large enough for most uses yet small enough to operate to conserve on fuel consumption. If you really require a larger generator please contact us and we will supply you with prices and sizes.
Our most popular unit is the Kohler 08RES that puts out 8 kW with an output of 110 and 220 volts. It comes with a pre-heater as does the 12RES for those colder areas. Both generators come on its own platforms which makes installing them easy as they can be simply placed on a bed of gravel. The gravel is used so that water can be shed away form the generator.
| IMAGE | MODEL | FUEL | ENGINE | RPM | OUTPUT |
PRE HEATER |
DIMENSIONS | LBS | SKU | PRICE | PURCHASE | |
| KW |
AC VOLTS |
|||||||||||
 SPECS |
8RES | LP/NAT | Kohler V-2 .62L, 38 CI | 3,600 | 8.5 | 110/220 | YES | 340 | 500-01001 | $3,800 |
 |
|
|
SPECS |
12RES | LP/NAT | Kohler V-2 .72L, 44 CI | 3,600 | 12 | 110/220 | YES | 500-01002 | $4,200 |
|
||
 SPECS |
15RES | LP/NAT | GM OHC 1.6L, 98 CI | 1,800 | 15 | 110/220 | 500-01003 | $8,995 |
|
|||
|
SPECS |
30RES | LP/NAT | GM OHC 1.6L, 98 CI | 1,800 | 30 | 110/220 | 500-01004 | $12,150 |
|
|||
 |
45RES | LP/NAT |
GM Vortec
4.3L V-6, 262 CI |
1,800 | 45 | 110/220 | 500-01005 | $15,450 |
|
|||
Replacement Parts --- Filters, Fuses, and Throttle Linkage Replacement Parts* for Kohler 8RES, 12RES, 15RES Generators
*Here's a helpful hint. We have found a that sloppy throttle linkage can lead to generator malfunctions. Symptoms may include over or under frequency shut downs as well as over and under speed shut downs. We recommend that you change your oil and filters as outlined in your maintenance schedule and that you replace these three plastic linkage parts about ever five hundred to a thousand hours to prevent a costly repair call and to keep your generator running smoothly.
| 24-083-09-S | Air Filter | $19.95 |
|
| 12-050-01-S | Oil Filter | $14.00 |
|
| KP-223316 | 10 Amp Fuse | $2.05 |
|
| 25-158-11-S | Bushing, Throttle Linkage | $2.05 |
|
| 25-158-08-S | Bushing, Linkage Retainer | $2.15 |
|
| 358359 | Governor Stepper Coupling | $13.85 |
|
Replacement parts are available for other Kohler generators. Call 575-751-0620
Onan offers generators for use in motorhomes, utility trucks, and crossc ountry haulers, and feels that it is okay to warranty this type of use but does not offer their warranty for solar back-up applications.
We keep this space available in hopes that Onan will someday come around and make their policy solar friendly
|
Filters for Onan HGJAD, GHJAE, HGJAF Generators |
|||
| 140-3116 | Air Filter | $15 |
|
| 122-0839 | Oil Filter | $14 |
|
|
Filters for Onan 6.5 NHE Generator |
|||
| 140-2379 | Air Filter | $15 |
|
| 122-0800 | Oil Filter | $14 |
|
These Kohler generators do not come with
a start battery. We recommend that you can purchase one locally or if
you want you can purchase one from us.
|
$76 |
|
CHARGE AND GENERATOR START CONTROLS
Generator Start Control Module
The GSCM is a micro-processor based generator starting controller that
receives start commands from the 12 volt output from an Outback FX inverter
aux relay, a user supplied switch, an auxiliary relay in an inverter, a
voltage controlled relay, a timer or any user-supplied contact closure and
automatically controls a gas/propane or diesel powered generator or pump. It
is totally sealed
for harsh environment operation.
The GSCM provides contact signal relays to start the engine and disconnect the starter when a minimum generator frequency output is measured. It monitors the generator operation, shutting it down if one of several fault conditions is detected. LEDs are flashed to indicate the cause of the shutdown. Manually resetting the GSCM removes the lockout and allows the generator to restart if called.
The GSCM is powered by 12 to 24V DC from a battery bank and will start generators for 12 to 48V systems.
For 48V systems the GSCM must be powered by a 24V or less tap on the 48V battery bank. The GSCM provides a 30 day exercise function which can be synchronized with a photovoltaic input to only start each 30 day period at the beginning of the solar charge day.
- Dimensions are 5.5" x 3.3" x 1.5"
2-year limited warranty.
This generator start controller is optimized for use with OutBack inverters. It supports three types of 3-wire gas-generator control: momentary, maintained or ignition. It has a fixed crank time and over and under frequency shutdown.
|
Model |
Description |
SKU |
MSRP |
Price |
Purchase |
|
GSCM |
Generator Start Control Module |
020-06341 |
$322 |
$2 90 |
|
| GSCM-mini | Generator start controller module | 020-06343 | $223 | $205 |
|
The Magnum AGS is compatible with most major generators, including Onan, Powertech, Generac, and Weterbeke. Please check with us for specific model compatibility. The Magnum Auto Generator Start (AGS) is designed to automatically start your coach generator based on low battery condition or the inside temperature of the coach.
You can set the battery start voltage from 10-12 VDC or 20-22 VDC, the start
temperature from 65°-85°F, the run time from one
to five hours, and the quiet time with an easy-to-set clock. Auto
Gen Start settings do not interfere with the manual start / stop
operation of the generator. Just use any existing start / stop
switch in your coach.
Two models are available. The standalone version of the AGS
works well for installation and operation without an inverter.
The network version of the AGS allows operation of the AGS
via the ME Series remote panel.
| Model | Description | SKU | MSRP | Price | Purchase |
| AGS-S | Automatic generator start standalone | 020-06375 | $299 | $287 |
|
| AGS | Automatic
generator start – Magnum network version – Use with Magnum inverters only |
020-06377 | $299 | $287 |
|
The Solar Converters GS2-AC automatically controls starting and stopping of generators used as back-power sources in off-grid systems. It starts the generator when battery voltage drops below the low set point. When the battery gets to the high set point the GS-2 stops the generator.
Supports
2, 3 and 4 wire systems as well as advanced control systems. The set points
can be
adjusted for 12, 24 or 48 volt battery systems. Circuitry can operate
between 10 and 63 volts DC. The generator may be remotely started by a
single pole switch or any dry contact closure.
A 5 second time delay on voltage sensing prevents false triggering during motor starting surges.
Circuit uses less than 20 mA when not starting generator.
Optional temperature sensor allows the voltage set points to be temperature compensated.
NEMA-3R rain tight enclosure 10" x 8" x 4".
1-year warranty
|
Solarcon Model |
Description |
SKU |
Price |
Purchase |
|
GS-2 |
Automatic Generator Start Control |
020-06239 |
$365 |
|
The Relay Driver is a logic module which provides control functions such
as high/low voltage alarms, load control and generator start for 12, 24 or
48 volt battery systems. It controls four independent relay driver outputs
by reading digital data inputs from Morningstar’s TriStar controller or by
reading battery voltage. Outputs can be used to operate any of the relays in
the next column or any other mechanical or solid
state relay with a coil voltage that is the same as the battery voltage
power the relay driver. Maximum current for each output channel is 750 mA.
The Relay Driver may be mounted to a DIN rail and is fully programmable with the included PC software via serial RS-232 port connection. Dimensions are 6.4" x 3.2" x 1.3" and weight is 0.4 lb. Terminals can accept 16 to 24 AWG wire. Self consumption is less than 20 mA and the unit will operate from 8 to 68 volts DC. 3 year warranty
|
Description |
SKU |
Price |
Purchase |
|
Morningstar Relay Driver RD-1 |
020-01255 |
$169 |
|
Wired between any 120 VAC inverter/charger, generator and load center, this unit allows you to bypass the inverter in the event of an inverter failure. After the bypass switch is thrown, the generator is connected directly to the load center.
The inverter can than be removed for repair. This is designed for inverters with built-in transfer switches. Maximum current is 60 amps.
Dimensions: 13.5" x 6.25" x 3.5".
All components are UL Listed.
|
Description |
Weight |
SKU |
Price |
Purchase |
|
Inverter Bypass Switch |
7 lbs |
053-07819 |
$110 |
|
Web Site
Safely connect an inverter and an AC generator to the same house wiring. These automatic transfer switches can be used with inverters that don't have built-in transfer switch capability. If the generator is not running, then the inverter is connected to the house wiring. When the generator is started, the house wiring is automatically disconnected from the inverter and connected to the generator. A time delay feature allows the generator to warm up before the transfer takes place.
These transfer switches are
particularly useful in RV and Marine installations where both the hot
and neutral terminals must be switched. They can be used between an
inverter and a generator, between an inverter and shore power, or a
generator and shore power. Two transfer switches can be used if
switching between all three
power sources is desired.
Indoor rated housings have conduit knockouts on all four sides.30A and 50A units have a plastic housing and 100A units have a metal housing.
ETL listed to UL1008
|
Model |
AC Volts |
Max Amps |
Generator max kW |
Dimensions |
Weight |
SKU |
Price |
Purchase |
|
120 |
30A |
4kW |
7.5"H x 8.5"H x 4"D |
2 lbs |
053-08041 |
$80 |
|
|
|
120/240 |
50A |
12kW |
7.5"H x 8.5"H x 4"D |
3 lbs. |
053-08053 |
$180 |
|
|
|
120/240 |
100A |
24kW |
10"H x 12"W x 4"D |
15 lbs. |
053-08056 |
$798 |
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