FORM 2 THE PATENT ACT, 1970 (39 OF 1970) AND THE PATENT RULES, 2003 COMPLETE SPECIFICATION (See section 10; rule 13) 1. TITLE OF THE INVENTION MONITORING SYSTEM FOR ELECTRICAL DISTRIBUTION NETWORK 2. APPLICANTS: (a). Name: Ashida Electronics Pvt. Ltd. (b). Nationality: Indian Company (c). Address: Ashida House, A-308, Road No 21, Wagle Industrial Estate, Thane-400 604, India 3. PREAMBLE TO THE DESCRIPTION The following specification particularly describes the invention and the manner in which it is to be performed: BACKGROUND OF THE INVENTION FIELD OF THE INVENTION The invention relates to a monitoring system (100) for Electrical distribution networks comprising at least one configured ring-main-unit (110); at least one configured feeder remote terminal unit (120) coupled to the ring-main-unit (110) over a wireless network to send and receive SMS from the configured Ring main unit (110); a server grade computer (150) coupled to the configured feeder remote terminal unit (120) and a supervisory control and data acquisition system (SCADA)(160) connected to the server grade computer (150) via at least one communication protocol; the configured feeder remote terminal unit (120) being enabled to determine real time of the SMS receipt by sending a query to a network time protocol server. The invention further relates to a process of monitoring electrical distribution networks. DESCRIPTION OF THE RELATED ART Electrical Distribution Networks are formed by interconnecting a number of ring shaped grids. Distribution transformers are connected to the electrical distribution networks by T-offs. Instead of specifying and selecting individual components required for a T-off, the required components are frequently available in an integrated package known as a ring main unit (RMU). These Ring main units are located throughout the city wherein each ring main unit serves a group of 3-4 buildings. Monitoring systems are known to be used in Electrical distribution networks especially at the Ring Main Unit level. Such monitoring systems provide for fault analysis and for communicating alarm conditions to a central control station using communication links. These monitoring systems use either GPRS for communication or use Short messaging service (SMS) based communication wherein the SMS is received by humans for further processing. Monitoring systems enabled to monitor and control distribution transformers and sub-station feeders useful in fault analysis are known. Such systems communicate alarm conditions to a central control station wherein the events are sent through short messaging service (SMS) received by humans. Automated monitoring systems with the central system programmed to receive short messages from different units and perform desired actions are also known. Remote monitoring and control systems using wireless MESH technology for monitoring and control of utility grids which does not involve human intervention for its operation and which involves the use of SMS as one of the modes of communication are also known in the art. Machine to machine (M2M) communication systems for automated decision and communication processes between two or more entities are known. They provide for an M2M interface involving multiple communication means and use of short messaging service to communicate with the external M2M applications. US7760650 discloses a Supervisory Control and Data Acquisition (SCADA) system comprising a remote terminal unit (RTU) associated with a site; a SCADA hub in communication with the remote terminal unit; and at least one user station. The remote terminal unit identifies and initiates communication of data regarding the changed property of the user station to the SCADA hub which responds to the communication by transmitting data regarding the changed property to the user station by instant messaging. The marketed product D01-FEP relates to a Front End Processor (FEP) which communicates through different networks with Remote Terminal Units, Data Loggers, SCADA and interfaces with multiple host systems for mimics, data storage and data processing. The FEP also take care of time synchronization of all RTUs or outstations connected to the unit. Further, alarms or measurements are transmitted by RTU through SMS via the Front End Processor. However, these prior art systems suffer from inefficiencies, particularly when there is a fault in the system. In the SMS based prior art systems, it has been observed that the time of delivery of the SMS with the fault details, from the remote unit to the SCADA master, may be delayed by up to one second. This delay in identifying the fault further delays the fault retification. The timely restoration of such faults is highly critical in electrical distribution networks and this renders such prior art systems highly inefficient. Further the prior art systems do not provide for secured SMS communication which is vital in electrical distribution networks. It is possible to hack into such monitoring systems by sending short messages to the SMS Gateway or to the Feeder Remote Terminal unit. Hence these systems are not reliable for use in the electrical distribution networks, especially when monitoring a remote station with no other connectivity other than GSM. Moreover, there are several other drawbacks observed in using these prior art systems which involves SMS based communication. The time in the remote terminal units of such systems does not have a reference and is therefore liable to drifting. Due to this drawback, the events recorded by the system cannot be used for time based analysis which is important in Electrical Distribution networks. There is also a probability of losing the short message in the use of these monitoring systems. These monitoring systems are thus not secure and do not provide for time based analysis of any faults or alarm conditions arising in electrical distribution networks. Hence there is a need to develop a monitoring system which is efficient and provides for a time based analysis with greater accuracy of detection and restoration of any fault or alarm conditions in electrical distribution networks. There is a further need to develop a monitoring system which uses short messaging service in a highly secure and a feasible manner by providing enhanced security features in order to prevent hacking and mal-operations in the system. SUMMARY OF THE INVENTION The invention relates to a monitoring system (100) for electrical distribution networks. The monitoring system (100) comprises at least one configured ring-main-unit (110); at least one configured feeder remote terminal unit (120) coupled to the configured ring-main-unit (110) over a wireless network and enabled to send and receive SMS from the configured Ring main unit (110). The system further includes a server grade computer (150) coupled to the at least one configured feeder remote terminal unit (120) over a wireless network and enabled to send and receive SMS from the configured feeder remote terminal unit (120); and a supervisory control and data acquisition system (SCADA)(160) connected to the server grade computer (150) via at least one communication protocol to send and receive SMS from the server grade computer (150). The configured feeder remote terminal unit (120) is enabled to determine real time of the SMS receipt by sending a query to a network time protocol server via a network time protocol, According to an embodiment, the invention relates to a process of monitoring electrical distribution networks (200). The process involves transmitting SMS with status details from at . least one configured ring main unit (110) to at least one configured feeder remote terminal unit (120) through a wireless network. The process further involves determining real time of the SMS receipt by sending a query from the at least one configured feeder remote terminal unit (120) to a network time protocol server and appending the real time to the SMS and forwarding the SMS from the at least one configured feeder remote terminal unit (120) to a server grade computer (150) through a wireless network. The SMS is then sent from the server grade computer (150) to a supervisory control and data acquisition system (SCADA) (160). BRIEF DESCRIPTION OF THE DRAWINGS For a more complete understanding of the invention reference should now be made to the embodiments illustrated in greater detail in the accompanying drawings and described by way of embodiments of the invention. FIGURE 1 shows a schematic view of the monitoring system which can be used with electrical distribution networks in accordance with the embodiments of the present invention. Figure 2 shows a flow chart of the process of monitoring the electrical distribution network in accordance with the monitoring system of the present invention. Figure 3 shows an encryption algorithm used in accordance with an embodiment of the present invention. It is to be understood that the drawings are not to scale and are schematic in nature. In certain instances, details which are not necessary for an understanding of the present invention or which renders other details difficult to perceive, may be omitted. It should be understood, of course, that the invention is not necessarily limited to the particular embodiments illustrated herein. DETAILED DESCRIPTION OF INVENTION: In describing the embodiments of the invention, specific terminology is used for the sake of clarity. However, it is not intended that the invention be limited to the specific terms so selected and it is to be understood that each specific term includes all technical equivalents that operate in a similar manner to accomplish a similar purpose. The invention relates to a monitoring system for electrical distribution systems. As shown in Figure 1, the monitoring system (100) comprises at least one configured Ring-Main-Unit (110); wherein the configured ring main units (110) are located throughout the city. Each ring main unit (110) is enabled to serve a group of 3-4 buildings. The monitoring system (100) of the invention enables monitoring the basic parameters of multiple ring main units (110) from a central location using low-cost & reliable SMS based communication. According to an embodiment, the monitoring system (100) further comprises at least one configured feeder remote terminal unit (FRTU) (120). The configured feeder remote terminal unit (120) is coupled to the Ring-Main-Unit (110) over a wireless network. The feeder remote terminal unit (120) is enabled to send and receive SMS from the configured Ring main unit (110). The configured feeder remote terminal unit (120) is modular and customized as per the requirement of the user. The configured feeder remote terminal unit (120) has at least one Digital Input