POWER QUALITY ANALYSING, RECORDING AND TROUBLESHOOTING MI 2792 PowerQ4 Plus


Regardless of the definition used, power quality is a major strategic issue in the open electricity market economy. There are several reasons to encourage a systematic and constant approach to the monitoring of the power quality parameters, these include: • Easy identification and elimination of problems on the utilities or customer’s installation. • Preventative maintenance by the early location of potential sources of disturbances or failures. • Optimization of the power network based on Power Quality parameters.


The MI 2792 PowerQ4 Plus is a power quality analyzer specially designed for the troubleshooting of power systems and devices. Key features include a rug- ged design, long battery powered operation time (up to 15 hours), powerful recorders, events and alarms facility, flex current clamps as a standard accessory, remote instrument control via optional GPRS modem and the ability to synchronize instruments via GPS make this instrument a unique troubleshooting tool.


Advanced PC SW package PowerView2 enables detailed analysis of record- ed data and the automatic creation of professional test reports. An excel- lent price / performance ratio, small size, advanced measurement methods and loggers are undoubted the highlights of the MI 2792 PowerQ4 Plus.


MEASURING FUNCTIONS: • Voltage: TRMS, peak, crest factor (4-channel); • Current: TRMS, peak, crest factor (4-channel); • Power (active, reactive, apparent); • Power factor, cos ϕ; • Unbalance, flicker measurement; • Harmonic analysis up to the 50th


harmonics, THD measurement;


• Energy (active, reactive, generated, consumed); • Capturing and recording of power supply events (interruptions, swells, dips); • Inrush currents monitoring and recording; • Recording with up to 10 adjustable alarms; • Waveform plotting and snapshot.


APPLICATION: • Power quality assessment and troubleshooting in low and middle voltage electrical systems;


• Checking power correction equipment performance; • Harmonics spectrum analysis for selection of harmonic filters; • Checking and troubleshooting of UPS, voltage generators and regulators; • Voltage, current, power monitoring and recording; • Consumption profile recording.


HV INSULATION ANALYSIS MI 3200 TeraOhm 10 kV


Characteristics of insulation tend to change through the time, normally getting worse through ageing. Various physical phenomena (like temperature, dirt, humidity, mechanical and electrical stresses, high-energy radiation, etc) have a big influence on insulation characteristics.


Safety, operability, and reliability are the most important parameters of an electrical device or system containing insulation and this is the rea- son why insulation must be measured. Insulation is measured in the production phase of electrical device and also later, during maintenance works or repair.


The new insulation tester MI 3202 TeraOhm 10 kV is a portable instrument intended to measure insulation resistance by using high DC test voltages up to 10 kV. The TeraOhm 10 kV enables insulation resistance measurements up to 10 TΩ, step voltage test, withstanding voltage test, PI, DD and DAR calculation and capacitance measurement.


The large LCD screen enables real-time graph R(t) to be displayed. Re- sults can be stored and downloaded to a computer via USB or RS232 connection with the help of the optional HVLink PRO software. The high quality instrument, shielded test leads and quality accessories included in the standard set enable insulation testing to be perform quickly and effectively.


MEASURING FUNCTIONS: • Insulation resistance measurement; • Step voltage insulation resistance testing; • Withstanding voltage testing; • Diagnostic test (PI, DD, DAR); • R(t) graph plotting; • Capacitance measurement; • Voltage measurement; • Frequency measurement.


APPLICATION: • Testing insulation resistance of rotating machinery, cables, transformers, HV generators, surge arresters; • Production line periodic testing and maintenance;


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ALTERNATIVE: • MI 3201 TeraOhm 5 kV Plus


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