October 2004Electrical Power & Protection
Maintenance, Test & Measurement, Calibration
The German-designed Mavolog power quality analyser, which can be used by power distributors and large industries for long-term monitoring of energy supplies, is available from Timecount.
Interference generated by energy users can cause disturbances within the network, which can influence reliability of operation for the other consumers within a network. During peak consumption periods, the quality of energy supply is particularly susceptible to fluctuations. SABS tested and complying with NRS 048-2 and EN50160 'voltage characteristics in public distribution networks', Mavolog Series 10 can be configured for all types of applications from power generation to consumer, in combination with multiple instruments or as standalone.
The top-of-the-range Mavolog 10S power analyser with LCD and current inputs is a universal instrument for the recording of the characteristics significant power quantities in three-phase systems, and for testing of voltage quality characteristics.
Measured quantities U1, U2, U3 and UN as well as I1, I2, I3 are processed directly at the DSP (digital signal processor). The user-specific selection of available measured quantities and analysis is stored to the internal 256 KB memory. Memory configuration can be adapted within a broad range of desired requirements. Stored data is uploaded to the computer via RS485 interface. Up to 32 instruments with different configurations can be connected with a bus cable.
The Mavolog 10L basic version without current inputs or LCD is equipped with a programmable alarm output for event messages. The primary range of applications includes the areas of voltage quality and voltage recording with integrated harmonic analysis and flicker measurement, in three-phase AC systems. Measurement values are acquired and stored to internal memory at short-term, daily or weekly intervals depending upon memory configuration. Connection to other instruments, as well as to a PC, is established via the RS485 interface.
Up to 10 selected measurement quantities and analysis can be consecutively displayed on the LCD by activating a pushbutton. This version is otherwise identical to the Mavalog 10L
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