
related side effects (conductor overload, circuit breakers and machines, phase unbalances,
interferencesinelectronicunits,RCCBtrips,etc�)�
Thelevelofharmonicsisusuallymeasuredwiththetotalharmonicdistortionrate(THD),which
istheratio,usuallyasa%,oftheRMSvalueoftheharmoniccontentandthevalueofthefun-
damentalcomponent�
4�2�-MEASUREMENTPARAMETERS
Theunitdisplaysthefollowingelectricalparameters:
4�2�1� Connection type: 3U�3C
Table 3: Computer SMART III FAST measurement parameters (3U�3Cconnection)
Parameter Units Phases
L1-L2-L3
N
Total
III
Max
(1)
Min
(2)
Phase-neutralvoltage V
Phase-phasevoltage V
Current A
Leakagecurrent mA
Frequency Hz
(L1)
ActivePower M/kW
ApparentPower M/kVA
TotalReactivePower M/kvar
InductiveReactivePower M/kvarL
CapacitiveReactivePower M/kvarC
Powerfactor PF
Cosφ φ
VoltageTHD% %THDV
CurrentTHD% %THDA
HarmonicBreakdown-Voltage
(uptothe17thharmonic)
harmV
HarmonicBreakdown-Current
(uptothe17thharmonic)
harmA
Activeenergy M/kWh
InductiveReactiveEnergy M/kvarLh
CapacitiveReactiveEnergy M/kvarCh
Apparent energy M/kVAh
Temperature ºC
No�ofoperations x1000
Totalactivatedpower %
(1)
Displaysthemaximumvalue�
(2)
Displaystheminimumvalue�
25
Instruction Manual
Computer SMART III FAST
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