AEMC 8220 User Manual page 5

6. MAINTENANCE ................................................................................ 60
6.1 Changing the Batteries.......................................................................60
6.2 Recharging the Rechargeable Batteries ............................................61
6.3 Cleaning .............................................................................................61
APPENDIX A: MATHEMATICAL FORMULAS .......................................... 62
Half-period Voltage and Current RMS Values .............................................62
MIN / MAX Values for Voltage and Current .................................................62
Peak Voltage and Current ...........................................................................63
Peak Factors for Current and Voltage (over 1 second) ...............................63
1 sec RMS Values for Voltage and Current .................................................63
Harmonic Calculations ................................................................................64
Different Power Levels 1 Sec in Single-Phase Connection .........................64
Different Power Levels 1 Sec in Balanced Three-Phase Connection .........64
Ratios ..........................................................................................................65
K Factor .......................................................................................................65
Various Types of Energy .............................................................................65
Hysteresis ....................................................................................................66
Diagram of 4 Quadrants ..............................................................................67
Saturation of Input Channels .......................................................................67
Repair and Calibration ....................................................................... 68
Technical and Sales Assistance ......................................................... 68
Limited Warranty ............................................................................... 69
Warranty Repairs ............................................................................... 69
Power Quality Analyzer Model 8220
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