Wind energy converter commonly converts wind power to shaft and electric power. One of the problems of transmitting shaft power is the limited distance between the driving to the driven shaft. This paper describes an experimental study of electrical transmission from driving to the driven shaft that was carried out on three modes of cable lines transmission. The driving shaft was attached to an electric generator that converts shaft r to electric power. The driven shaft was coupled by electric motor which reconverts the electric to shaft power. The generator and motor were BLDC and BDC permanent magnet electric machines. The distance of the driving to the driven shaft was 300 meters. The electric power was transmitted using wires. The wires consisted of 2 and 3 cables commonly used by peoples and sold in market place. The results showed that electric transmission mode on the experiment has important role on performance of shaft power to electric power conversion on driving generator and energy losses on cables transmission. DC on small wires electric transmission gave total efficiency of 16.2 %. DC on large wires electric transmission gave total efficiency of 32.9 %. AC on large wires electric transmission gave total efficiency of 36.4 %.

Abstract-The

The Solar Water Pump is the solution to the provision of raw water for the community, especially the residents of Girikerta, Panggang, Gunung Kidul. Raw water sources at Grigak Beach have been able to be lifted and distributed to residents. The location of each water reservoir is located so far apart that it needs to be monitored in order to maintain the system. Wireless Sensor Network (WSN) system is an alternative solution for monitoring and maintenance. The study to design and implement a WSN is needed to carry out monitoring in the context of maintenance of the pump system, both located in water sources and water reservoirs. The resulting monitoring system consists of a series of sensor nodes and a sensor gateway circuit. Sensor nodes consist of temperature sensors, RF transmitter devices and microcontrollers. Meanwhile the sensor gateway consists of temperature sensors, RF transmitter devices, cellular devices and microcontrollers. The measurement results are then sent to the cloud server to be displayed and accessed by the public. The results of testing this monitoring system indicate that the system has functioned according to the design.