7. MAINTENANCE ............................................................................. 87
7.1 Recharging and Changing the Battery ...............................................87
7.2 Cleaning .............................................................................................87
APPENDIX A: MATHEMATICAL FORMULAS ......................................... 88
Half-period Voltage and Current RMS Values ....................................88
MIN / MAX Values for Voltage and Current ........................................88
Peak Values for Voltage and Current .................................................89
Peak Factors for Current and Voltage ................................................89
1 sec RMS Values for Voltage and Current ........................................90
Voltage and Current Unbalance .........................................................90
THD Calculation .................................................................................90
Calculation of Harmonic Bins .............................................................91
DistortionFactorCalculation(DF) ......................................................92
K Factor..............................................................................................92
Different Power Levels 1 Sec .............................................................93
Ratios ..............................................................................................93
Various Types of Energy ....................................................................94
Hysteresis ..........................................................................................95
APPENDIX B: GLOSSARY OF TERMS................................................... 96
Repair and Calibration ........................................................................................99
Technical and Sales Assistance .........................................................................99
Limited Warranty ..............................................................................................100
Warranty Repairs ..............................................................................................100
