General description
The UMG 103 is a very compact universal measuring instrument for mounting on DIN rails. The compact dimensions even enable installation in limited spaces such as in installation sub-distribution boards. Installation and connection costs are significantly reduced by mounting the instrument on a 35mm DIN rail.
In order to make use of the extensive functions of modern measuring instruments, the interconnection and central analysis of data plays an important role. This is the reason for not using a display; two LEDs show the current operating status. The communication of measurement data takes place through a very fast RS485/Modbus interface.
The UMG 103 performance level is usually sufficient for sub-measurements in connection with higher performance power analysers such as the UMG 604 or the UMG 507 applied in more complex energy management systems. In this case, the UMG 103 serves as data measurement point which takes the measurement data and passes it on to a subordinate point.
Using power analysers such as the UMG 604 with an integrated Modbus/Ethernet-gateway and integrated web server, data are brought onto the Ethernet level or visualised on the homepage. Some examples of applications are cost centre data collection in office buildings, monitoring feeders to sub-distribution panels, motor control centres or in IT and data centres.
Applications
The UMG 103 is intended for the measurement and calculation of electrical parameters such as current, voltage, power, consumption or harmonics etc. in building installations, on distribution panels, on circuit breakers and on server racks.
The UMG 103 is fixed into cabinets or small installation distributors in any installation position. The measurement values can be read out using the serial interface. The highest, lowest and energy values are recorded every two seconds in a non-volatile memory.
The voltage measurement inputs are designed for the measurement in low voltage networks in which nominal voltages up to 300V against earth and surge voltages up to excess voltage category III can occur. The UMG 103 is mainly suitable for measurements in low voltage networks because it takes the supply voltage from the measurement voltage and a voltage converter would, therefore, be necessary for HV grids.
