FIELD OF INVENTION
The present invention relates to a power back up system for off road vehicle for providing power to remote locations such as home, field.
BACKGROUND & PRIOR ART OF THE INVENTION
The use of power backup systems as a means for providing limited amounts of AC electrical power for use in sites, in remote locations or mobile use where AC power is not otherwise available are well known. These inverters range in size and capacity from smaller inverters which will deliver a full load current of up to about 1.1 watts or 15 amps while drawing a no-load current of 0.5 amps up to systems which will provide in excess of 2000 watts at a DC current draw of about 200 amps from a d.c. electrical power storage source. A battery of a vehicle may typically be used to provide about 50-100 DC amps to such an inverter for shorter time periods without draining the storage battery excessively.
Now- a- days it is possible to power household appliances with a 12V inverter from vehicle RV battery. This is made possible by a simple device called a 12 volt inverter. The vehicle uses 12 volt direct current (VDC) electricity and the house appliances need 120 volt alternating current (VAC) power. A 12v Inverter essentially takes the power from the vehicle battery, step it up to 120 volts and convert it to AC electricity. Low voltage DC power is converted through an oscillator to an equal voltage of AC power. The low voltage AC power is then set at a frequency of 60 Hertz. It implies that, the polarity (positive and negative) is switched back and forth at 60 cycles per second creating either the 'modified square wave' or 'pure sine wave'. The transformer steps up that low voltage AC to the utility standard 120 or 240 volts.
Now, reference may be made to the following known arts:-
US patent no 6,596,941 provides an AC electrical power delivery system for installation into a utility box attached to the bed of a pickup truck. This system

delivers AC electrical power for operating light-duty equipment including power hand tools and electrical equipment to an included AC outlet connectable to a side wall of the utility box. An electrical power inverter is provided of the type which converts incoming DC electrical power to AC electrical power. The inverter is installable into the utility box in proximity to, and having an AC power output in electrical communication with, the AC outlet.
US patent no 7,231,994 provides a hybrid vehicle includes an internal combustion engine coupled to a combined starter/motor/generator which is, in turn, coupled to a transmission of the vehicle. The starter/motor/generator is coupled to a high voltage battery pack via an inverter and to a deployable power output panel for serving loads external to the vehicle. Whenever external loads are to be powered, a control unit automatically places the vehicle in PARK, or alternatively activates an electrical parking brake system to hold the vehicle stationary.
US patent no 5,725,062 relates to solar power for vehicles and in particular to a solar-power generator that is attachable to a top of a vehicle such as a golf cart, motor home, car or boat to supplement electrical supply for powering the vehicle and electrical components of the vehicle or for powering electrical items that are not related to operation of the vehicle and are positioned close by in a home, office, recreational vehicle, boat or in the same vehicle or in another vehicle.
US publication no 20070252435 provides a high capacity mobile electric power source having a toolbox for attachment to a truck bed. A battery is connected to the toolbox bottom. An inverter is connected to and is in thermal communication with the toolbox rear-gate facing wall for enhanced thermal dissipation. The inverter is electrically connected to the battery positive pole connection.
US patent no 7,469,541 provides a remote and portable, hybrid power system comprising one or more of the following components: a solar system, batteries, a back-up generator, a wind energy system, and a communications system. The components are disposed on a platform that is portable and transportable to the remote

location by a truck or other transportation vehicle. The portable assembly is transportable to locations where energy is needed, including remote locations. The assembly may include an electric output connector to connect the renewable energy power system to a structure or vehicle to supply electric energy to the structure or vehicle.
US publication no 20090026841 provides an electric power supply system which, in the event of a power failure, is capable of efficiently supplying electric power to household electric appliances in cooperation of a vehicle, including a mechanism supplying electric power outside the vehicle, with a stationary fuel cell system and also includes an electric power supply system using a power converter for converting direct current powers from a vehicle fuel cell and a stationary fuel cell into alternating current powers.
US patent no 6,104,160 relates to a household power supply system using an electric vehicle, comprising an external power system, a house with an indoor power line, an electric vehicle having a vehicle power system with vehicle batteries, a charger/discharger for connecting separably the indoor power line and the vehicle power system, and a controller for controlling power supply to the indoor power line. The power supply system is capable of supplying energy from the household power supply to the vehicle batteries at the normal state, and conversely supplying energy from the vehicle batteries to the indoor power line at the time of emergency, etc. to enable employment of indoor electric equipments.
US publication no 20080221746 discloses a vehicle and docking facility at a home or business structure, electric power derived from solar collectors formed on the surface of the vehicle, and the docking facility for receiving such power, or for providing electric energy to the vehicle, depending on a signal from the vehicle indicating whether the vehicle needs to buy electric energy from the docking facility, or can instead sell electric energy to the docking facility.

US patent no 7,550,861 discloses an automatic switching device that upon power failure of a commercial power source, switches to power supply from a hybrid vehicle. An ECU of the vehicle, when receiving a request for generation of a commercial AC voltage, sets an upper-limit power generation amount based on a remaining amount of fuel. The ECU transmits the upper-limit power generation amount via an antenna to an on-premises ECU, while controlling a power generation amount based on the upper-limit power generation amount.
Publication no JP2002353646 relates to a waterproof inverter constituted by forming a waterproofing chamber in the unopened inverter by providing partition walls between the parts attaching walls of a housing and the electric circuit, but not providing any partition wall between the walls of the housing other than the parts attaching walls and the electric circuit.
Publication no CN2592421 (Y) provides a vehicular solar energy supplying device (station), which is composed of a vehicle body, a solar battery bracket, a lithium ionic accumulator of a solar battery, a manostat, an inverter, and a voltage and current display. The utility model applies the solar energy technology to an automobile, a solar battery-board (monocrystalline silicon or polysilicon) is arranged on the top or surface of the automobile, a suit of electric-power system is additionally added on the basis of the existing automobile power, the modes of using electric power and internal combustion power can be exchanged at any time, and a large-capacity lithium ionic accumulator can be arranged. The solar battery can not only directly supply power to an automobile electric-power system, but also can indirectly supply power by charging the lithium ionic accumulator, namely, power supply is indirect; the solar battery can discharge an electric appliance, a digital camera, and a cellphone in a vehicle and other electric appliances out of the vehicle or directly supply power to the electrical appliances in and out of the vehicle by connecting lines.
Publication no 20090002903 provides an electrically-driven vehicle and an ECU that based on a voltage from an insulation resistance decrease detector determines whether the insulation resistance of a power supply device decreases or not. The electrically-

driven vehicle, comprising: a power storage device; an electric power conversion device configured to allow at least one of power feeding from said power storage device to a load external to the vehicle and charging from said load to said power storage device to be performed; and detection means for detecting a decrease in insulation resistance of the power supply device, said detection means, when said load is connected to said electric power conversion device, setting a determination threshold value for detecting the decrease in said insulation resistance to a value lower than the determination threshold value in a non-connected state of said load to said electric power conversion device.
Publication no 20080185197 provides an electrical system, hybrid vehicle and method of controlling hybrid vehicle. The electrical system is installed in a vehicle and prevents a communication error from occurring in the communication with an apparatus external to the vehicle through an electric power line for transmitting electric power to and from outside the vehicle. Hybrid vehicle can receive commercial electric power from house through electric power lines, and charge an electricity storage device. Hybrid vehicle can also generate electric power to supply it to house through electric power lines.
Publication no 20070189048 provides a small and highly vibration-proof inverter capable of detecting a phase current without requiring the development of complicated control software and without causing any current distortion is provided. The inverter in the present invention is to be used on board a vehicle. The inverters for use in such field of application are required to be compact in size and light in weight. The present inverter, which is compact in size, vibration-proof, and low in the operating noise/vibration, would be advantageous in this field of application.
US patent no 6,104,160 provides a charging and discharging device involving a charging and discharging connector set on a housing side, and a vehicle power system set on an electric vehicle side, which involves an inlet part, an inverter for AC/DC conversion and DC/AC conversion, and a vehicle battery. The vehicle power system is connected to the charging and discharging connector at the inlet part, receives

power supply from the housing side, and supplies power to the household side. A vehicle battery is provided on the housing side, and in the case of emergency such as power failure, it is possible to supply power to a housing electrical apparatus from the battery or the vehicle battery.
Publication no CN2540313 (Y) provides a loading vehicle, a direct-current generator fixed beside the output shaft of an engine of the loading vehicle, and a transmitter connected between the shaft of the direct-current generator and the output shaft of the engine of the loading vehicle. The engine of the loading vehicle can rotate the direct-current generator to generate electricity, the frame of the loading vehicle is provided with an accumulator, the cabin of the loading vehicle is arranged with an inverter as ZXC-I inversion power supply of China Beijing energy-couple company, the output shaft of the direct-current generator is connected with the electric connector of the accumulator while the connector is connected with the input of the inverter. The utility model uses the engine of loading vehicle to drive generation, while generator can avoid occupying the loading space of loading vehicle. The inverter has small volume, strong shockproof property, large input direct-current range, and completely insulated input and output circuits. The alternative-current output from the inverter is pure sine wave alternative current, to be applied on various 220V alternative-current appliance.
Aussie Inverters provide 8ZED power inverters that convert 12 Volt DC car / truck/ caravan and boat battery into 240 Volt AC that the appliances use. Cobra Electronics Corporation provides a CPI 2550-2500 Watt power inverter that has been designed and built to take low voltage DC power from automobile or other low voltage power supplies and convert it to standard 115 Volt AC power. This conversion process thereby allows using many of household appliances and electronic products in automobiles, RVs, boats, tractors, trucks and virtually anywhere else.
RET Power provide the XPower Inverter 1200 Plus and 1750 Plus that are compact and lightweight inverters. These inverters easily get connected to a 12 VDC battery and provide up to 1200 watts or 1750 watts of AC power respectively. The inverters

are ideal for long haul truckers who need to power home appliances, consumer electronic and office equipment on-board their vehicle. They are also suitable for small contractors to operate power tools from their van or pick-up truck, and for recreational users such as RV or automobile owners.
Power inverter by Charles Industries Ltd USA provides an all-in-one starter kit for boaters that want a simple means to add AC power to the boat. Easily installed and operated, the 1000 watt, true-sine wave inverter and accessories provide onboard AC power for electronics and appliances. It is designed for the marine environment with rugged, corrosion-resistant materials.
PowerVerter Ultra Compact PWM sine wave inverter PV3000HF by Tripp Lite harnesses vehicle's battery to efficiently power office equipment on the road or power tools at a work site. Continuously supplies up to 3000 watts of 120V AC power to 4 AC outlets from any 12V battery or automotive DC source. The inverter includes a PV remote and 25 feet of cable.
The SkyTronic range of inverters transform 12/24V battery voltage into 230V mains voltage thus enables to use domestic equipment everywhere e.g. on camping, on a boat, in car, etc. The regulated output voltage makes the inverters suitable for use with sensitive devices such as TV sets, video and audio devices, PCs or laptops and many more.
Reference may be made to an article by NKBJ InfoNet, LLC. 2009-11. The article talks about powering AC devices from DC energy sources in tractor trailers. Using a DC to AC power inverter in your truck allows you to run many appliances just as you would at or in your home. For professional truck drivers, the most common inverters are either those that plug directly into a 12-volt cigarette lighter or those that connect directly to one of the truck's batteries. The operating time for an appliance to run via battery-connected inverter power without the engine being on will vary by the amount of power drawn. Consider the various types of appliances that the driver may need or want to charge or operate in the truck.

Reference may be made to an article by Jasna Tomi6 and Willett Kempton, University of Delaware, Newark, USA, Journal of Power Sources; Volume 168, Issue 2, 1 Pages 459-468, June 2007. The article talks about using fleets of electric-drive vehicles for grid support. Electric-drive vehicles can provide power to the electric grid when they are parked (vehicle-to-grid power). We evaluated the economic potential of two utility-owned fleets of battery-electric vehicles to provide power for a specific electricity market, regulation, in four US regional regulation services markets. The two battery-electric fleet cases are: (a) 100 Think City vehicle and (b) 252 Toyota RAV4. Important variables are: (a) the market value of regulation services, (b) the power capacity (kW) of the electrical connections and wiring, and (c) the energy capacity (kWh) of the vehicle's battery. With a few exceptions when the annual market value of regulation was low, we find that vehicle-to-grid power for regulation services is profitable across all four markets analyzed. Assuming now more than current Level 2 charging infrastructure (6.6 kW) the annual net profit for the Think City fleet is from US$ 7000 to 70,000 providing regulation down only. For the RAV4 fleet the annual net profit ranges from US$ 24,000 to 260,000 providing regulation down and up. Vehicle-to-grid power could provide a significant revenue stream that would improve the economics of grid-connected electric-drive vehicles and further encourage their adoption. It would also improve the stability of the electrical grid.
Publication no CN201309445 discloses an emergency electric power supply vehicle including a tractor and an emergency electric power supply arranged on the tractor, wherein, the emergency electric power supply comprises a mobile box body, and an alternating current (AC) power supply input interface and an AC power supply output interface are arranged on the box body; a double-power-supply switching over device is arranged inside the box body; the AC power supply input interface is directly connected with the AC power supply output interface through a switching circuit of the switching-over device, and is connected with a rectifier so as to charge a storage battery through the rectifier; and the output terminal of the storage battery is connected with an inverter which is connected with another switching circuit of the switching-over device after inverting a direct current (DC) voltage output by the storage battery in an AC voltage, so as to be connected with the AC power supply output interface through the switching circuit.

US patent no 7,301,247 relates to a power supply device incorporated in a vehicle driven by an internal combustion engine including: a first power supply system for driving a vehicle load that converts an output of a generation coil provided in a generator driven by an internal combustion engine into a DC output to supply the DC output to an electrical load or electrical loads in the vehicle; and a second power supply system for driving an external load that converts an output of another generation coil provided in the generator into a DC output, then converts the DC output into an AC output at a commercial frequency with an inverter, and supplies the AC output to an external load, wherein the inverter is operated as a DC-DC converter to supply assisting power from the inverter through a switch to the first power supply system, when the output of the first power supply system is insufficient.
US patent no 7,839,020 relates to an electric power supply system which, in the event of a power failure, is capable of efficiently supplying electric power to household electric appliances in cooperation of a vehicle, including a mechanism supplying electric power outside the vehicle, with a stationary fuel cell system and also includes an electric power supply system using a power converter for converting direct current powers from a vehicle fuel cell and a stationary fuel cell into alternating current powers. The electric power supply system is constructed by a vehicle fuel cell provided on a fuel cell vehicle, a stationary fuel cell provided in a stationary power supply system and a power converter for converting direct current powers from the vehicle fuel cell and the stationary fuel cell into alternating current powers.
US publication no 20100207448 relates to a load management controller for a household electrical installation comprising a pair of electricity supplies, a grid supply and a micro-generator supply, providing electricity to a plurality if sub-circuits. The household electrical installation has means to monitor the amount of electricity being supplied by the micro-generator supply and the amount of electricity being consumed in the household.
US publication no 20080205086 relates to a vehicle system for use in powering an AC load. The system may included an inverter system operating in cooperation with a

power distribution system. The power distribution system may be configured to provide a stabilized power output to the inverter system. The inverter system be configured to inverter the stabilized power output to an output suitable for powering the AC load.
US publication no 20100054010 relates to a method and system of inverting DC energy stored within a vehicle to AC energy sufficient for supplying appliances or other devices that traditionally receive AC energy from a wall outlet. The inverting may be executed without feedback control in that switching operations used to controller boosting and inverting the DC energy are controller solely from inputs and without regard to the actual output.
US patent no 6,788,504 relates to a mobile system for use in supplying AC power to different types of electrical loads including those having grounded neutrals as well as those having neutrals that are electrically isolated from ground. The system includes a GFCI circuit and can be switched between a first mode, in which the circuit provides AC power with ground fault protection for those loads having ungrounded (isolated) neutrals, and a second mode, in which the GFCI is deactivated so that it will not experience false tripping due to the intentional grounding of the neutral at the load. Both single and multi-phase systems are disclosed which can be incorporated into a vehicle, towed trailer, or portable generator. The system is useful for providing AC power to various types of electrical loads at locations where public utility power is not readily available.
Publication no JP2001224133 relates to a uninterruptible construction operation, without having to use a large engine generator vehicle and by using a power supply vehicle which is small, which is superior in terms of an environmental aspect and whose power is generated by an inverter, with reference to a house to which the construction operation is to be performed and whose load amount is large. A master power-supply vehicle and a slave power-supply vehicle, which electrify the house to which the construction operation as a distribution construction operation is to be performed, are provided with DC/ AC converters which convert DC power supplies

into AC power supplies by an inverter operation. The vehicles are provided with their drive and control devices. At the device in the power-supply vehicle, a means which forms phase information on the voltage control of the AC power supplies is installed, a means, which controls the output voltage of the converter in an own vehicle to the phase of the phase information is installed, and a means which outputs the phase information to the device in the power-supply vehicle via a wired or radio transmission line is installed.
Publication no CN101873088 relates to a solar electricity generating vehicle. The solar electricity generating vehicle comprises a vehicle body and a shelter and is characterized in that: the vehicle body comprises two functional parts, namely a front cabin and a chassis wherein the front cabin is an operating control room; an electric controller, an inverter, a battery rack and a solar component module are arranged in the shelter; a storage battery or a storage battery pack is arranged in the battery rack; the shelter is arranged on the chassis to form a fixed cabin body; the outer surface of the shelter is provided with a solar panel group and the solar panel group is connected with the framework of the shelter by a detachable fixing part and is unfolded by a telescopic supporter to form a telescopic unfolded shelter structure. The solar electricity generating vehicle can receive a large area of solar energy and provide electricity in the open air or in the surburb.
In order to overcome the above listed prior arts, the present invention provides a power back up system integrated to a vehicle for providing power to remote locations such as home, field or wherever the power is needed. Power back up system automatically takes care of the load disconnection at certain charge level of the battery so that vehicle can be restarted safely within certain time period.
None of the conventional system talks about a power backup system with automatic load disconnection by which one can ensure the restart of the vehicle safely within certain time period. Hence, a power backup system is required which has wrong connection protection, a circuit breaker for ease in operation and is easy to attach and detach with the vehicle for facilitating serviceability.

OBJECTS OF THE INVENTION
The principal object of the present invention is to provide a power back up system for off road vehicle for providing power to remote locations such as home, field.
Another object of the present invention is to provide a mobile AC electrical power for a variety of outdoor uses.
Yet another object of the invention is to provide a power back up system which automatically takes care of the load disconnection at certain charge level of the battery so that vehicle can restart safely with in certain time period.
Another object of the present invention is to provide a shock or vibration proof power back up system such as an inverter with a mobile charger.
Yet another object of the present invention is to provide power to the various load/appliances and for battery health monitoring.
Further another object of the present invention is to provide a power system that charges the battery of the vehicle during stall condition of the vehicle by using AC grid power.
Still further object of the present invention is to provide instantly available AC power.
Yet another object of the present invention is to provide a power back up system that eliminates the liquid fueled portable generators or the need for gas and diesel fuel to operate the generators.
Still another object of the present invention is to provide a power backup system for off road vehicle with protection.
Another object of the present invention is to provide a power backup system for off road vehicle which is easy to operate.

Yet another object of the present invention is to provide a power backup system for off road vehicle which is easy to attach and detach with the vehicle.
Another object of the present invention is to provide an inverter for off road vehicle/tractor wherein the dynamo-electric machine acts as charge generator for vehicle battery during normal running condition of vehicle.
Still another object of the present invention is to provide user interface so that the load conditions can be monitored and controlled through hand held device from remote location.
SUMMARY OF THE INVENTION
Accordingly, the present invention provides a power backup system for off road vehicle to supply electrical power from the off road vehicle to the house side at the time of emergency. The invention supplies power, wherever needed, to the load such as but not limited at home to run home appliances or at field to run loads. The battery charge level according to the invention does not goes below a predefined charge level so that the vehicle can be restart safely. The power backup system is designed to fit in the compact tractor cab without taking up a lot of space and is equipped with a circuit breaker/ power switch such that the inverter is on only when the circuit breaker/ power switch is on. The power backup system is user friendly as it has a reverse battery connection and back feed protection.
STATEMENT OF INVENTION
According to this invention, there is provided a power backup system for off road vehicle comprises an inverter housing accommodating first and second part, a power socket and renewable charger, wherein the first part comprises circuit assembly and the second part comprises the transformer assembly including a transformer, which gets fit onto the inverter body in which said first part is positioned on the top of the second part for increasing the ease in serviceability.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawings and wherein:
Figure 1 shows the power backup system mounted on the offroad vehicle
Figure 1 A shows extended screw tightened on the vehicle body
Figure 2A and B shows gasket sealing over the power backup system
Figure 3 shows slidable cover according to the present invention Figure 4 shows power socket according to the present invention
DETAIL DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS:
Reference may be made to figure 1, which shows the shock/ vibration proof backup power system for offroad vehicle according to the present invention. The power back up system is integrated to the off road vehicle such as but not limited to a tractor. It is a shock/ vibration proof power back up system with a mobile charger. It charges by dynamo, grid or any renewable power source such as but not limited to the solar or wind. The inverter housing has two main parts. The first part comprises circuit assembly and the second part comprises the transformer assembly. The said first part comprises the circuitry components which are sealed through the adhesive after soldering. The first part is on the top of the second part as shown in figure 1 which increases the ease in serviceability. The second part comprises transformer assembly which includes a transformer and gets fit onto the inverter body through the screws. The screw extends outward from the inverter body which gets tightened with the body of the tractor as shown in figure 1A. The inverter is mounted vertically on the tractor.

Thus the weight of the transformer is not on the body of the inverter instead it is on the tractor body. The position of the transformer is at the centre of gravity of the inverter so the weight of the transformer is negligible. During faulty condition, there is no need to replace/ open the whole inverter. As it is mounted vertical, and only top part comprises the circuitry, the service engineer needs to open the first part without detaching the whole inverter. The whole body has a gasket sealing as shown in figure 2 A and 2 B so that water seepage inside the inverter is avoided. On the backside of the inverter, as shown in figure 3, there is slidable cover which gets tighten with a screw so that it can be protected from mud, dust etc.
A power socket is provided in the system which supplies power (as shown in figure 4) upon requirements to the load such as but not limited at home to run home appliances or at field to run loads. The battery charge level does not go below a predefined charge level so that the vehicle can restart safely within a time period. The power backup system is designed to fit in the compact tractor cab without taking up a lot of space. Usersettable/ configurable and selectable predefined charge level can be made according to the present invention.
A renewable energy charger can be integrated (grid as well as solar charger) to charge the secondary power source of the vehicle. Where there is the requirement of power, the vehicle goes there and the power backup system is connected to supply the power. Even if the vehicle is not in use such as without limitation for three months or more, it can keep the secondary power source charged and the vehicle can start in one go when needed.
The power backup system may include an internal back-up power source, such as but not limited to a secondary power source, to provide limited emergency powering of the system. In this case, the controller of the backup system may be programmed to switch to the internal secondary power source if the external power source (such as but not limited to the vehicle's battery) falls too low or rises too high. Such a case may arise when a system is powered from a secondary powered source of the vehicle and the vehicle is started. On detecting a major voltage variation at the secondary

power source, the controller may switch to the internal secondary power source until the original source power stabilizes. The system also ensures the automatic recharging of the internal secondary power source which is powered by the external power source such as the vehicle's secondary power source or grid supply.
The power backup system takes the power from vehicle battery, step it up to the predefined voltage and convert it to AC electricity. During power failure, the present invention is capable of efficiently supplying electric power by internal DC to AC converter to household electric appliances in cooperation of a vehicle, including a mechanism supplying electric power outside the vehicle.
The present invention detects the electric power consumed by the connected load/ devices. An electromagnetic/ static switch is provided which automatically cuts off in the event of a power failure and thus, prevents the privately generated electric power from flowing reversely toward the system power source side. It makes the system more user friendly. If the user makes the wrong connections, the system goes in reverse feedback protection mode by keeping the current limited electronically or sensing output feedback before turning on the DC to AC conversion section and finally remains shuts down until the right connections are made. The system provides ease of serviceability as the connecting wire to connect the system and the off road vehicle is connected at the outside of the power backup system. This makes detachment or attachment of the power backup system easy, as only connecting wire needs to be pulled from the outside of the power backup system.
The present power backup system shuts down the output if no load/ device is connected at the output by sensing the AC or DC current. System will goes in sleep mode for a predefined time and gets automatically on permanently after sleep period is over and once the load/ device is connected.
The present power back system automatically disconnects the load and enters into the sleep mode or permanent off state at certain charge level of the battery so that vehicle can restart safely within certain time period. System automatically gets active once the battery is charged either through the vehicle or external power source.

The system has a user communication interface to monitor and control system/ connected load/ devices via wired or wireless media.
It is to be noted that the present invention is susceptible to modifications, adaptations and changes by those skilled in the art. Such variant embodiments employing the concepts and features of this invention are intended to be within the scope of the present invention, which is further set forth under the following claims:-

WE CLAIM
1. A power backup system for off road vehicle comprises an inverter housing accommodating first and second part, a power socket and renewable charger, wherein the first part comprises circuit assembly and the second part comprises the transformer assembly including a transformer, which gets fit onto the inverter body in which said first part is positioned on the top of the second part for increasing the ease in serviceability.
2. A power backup system as claimed in claim 1, comprising of slidable cover and gasket sealing for protection and the circuit assembly includes the circuitry components sealed through the adhesive after soldering.
3. A power backup system as claimed in claim 1 or 2, wherein the transformer is connected to the inverter through the screws in which the screw extends outward from the inverter body which gets tightened with the body of the tractor.
4. The power backup system for off road vehicle as claimed in any of the preceding claims wherein said inverter is mounted vertically on the tractor so that the weight of the transformer is on the body of the tractor.
5. The power backup system for off road vehicle as claimed in any of the preceding claims wherein said power socket supplies power upon requirement to the load such as but not limited at home to run home appliances or at field to run loads.
6. The power backup system for off road vehicle as claimed in any of the preceding claims wherein the transformer is positioned at the centre of gravity of the inverter.
7. The power backup system for off road vehicle as claimed in any of the preceding claims wherein the slidable cover is provided on the back side of the housing.
8. The power backup system for off road vehicle as claimed in any of the preceding claims wherein the inverter body has a gasket sealing on the outer side to prevent water seepage inside the inverter.

9. The power backup system for off road vehicle as claimed in any of the preceding claims wherein in case of the wrong connections, the system operates in reverse feedback protection mode by keeping the current limited electronically or sensing output feedback before turning on the DC to AC conversion section and finally remains shuts down until the right connections are made and after predefined time and said system automatically gets on permanently after sleep period is over and the load/ device is connected.
10. The power backup system for off road vehicle as claimed in any of the preceding claims wherein the system automatically disconnects the load and enters into the sleep mode or permanent off state at certain charge level of the battery so that vehicle can restart safely.
11. A power backup system for off road vehicle substantially as herein described with reference to the accompanying drawings.