34 Wattmeters
4.5 Variations in operating range
Influence parameter Operating Parameters Typical error
range influenced
Frequency 40 to 70 Hz Current 0.1%
Voltage 0.1%
Active power. 0.5 < PF < 1 1.5%
Active power. 0.2 < PF < 0.5 2%
Reactive power. 0.5 < PF < 0.8 2%
P(T3FE) 0.6 ≤ PF ≤ 1 2%
Q(T3FE) 0.6 ≤ PF ≤ 0.8 2%
Apparent power 0.5%
Harmonics Current (THD = 40%) 0,2% 0,5%
Voltage (THD = 20%) 0,2%0,5%
Voltage 0,2% 0,2%
PF 0.5 < PF < 0.8 P 1%
P(T3FE) 2%
PF 0.2 < PF < 0.5 P 2% +2 W
P(T3FE) 4% +4 W
PF 0.5 ≤ Sin φ < 0.6 Q 1%
Q(T3FE) 1%
Current 300 ppm/10°C
Temperature 0 to 50°C Voltage 200 ppm/10°C
Power 300 ppm/10°C
Current 0,7%
Relative humidity 10…95% RH Voltage 0,7%
Power 0,7%
Current 0,04%
Battery voltage 6.5 to 10 V Voltage 0,04%
Power 0,1%
Common mode Current
0,2% for
U = 230V 50 Hz
Note: The term Power covers the active power P and its associated values Q, S and PF.
5. ACCESSORIES
5.1 Delivered with the wattmeters PX 110 / PX 120
2 sets of safety leads
1 set of leads with touch prods
Six 1.5 V batteries
1 operating manual
5.2 Delivered as options
Operating software (box + optical head) ................................................................... HX0013
Set of 6 NiCd 1.2 V batteries, size 14.5 x 50 mm ..................................................... HX0014
Set of six LR6-AA alkaline batteries .......................................................................... HX0020
Set of fuses ................................................................................................................ HX0019
Set of two 20 A leads (R/BK) 2 m long for the voltage or current circuit ......... P01295290Z
Set of 2 touch prods (red/black) ............................................................................. HA2045A
Wattmeter switcher ................................................................................................... HX0011
Multi-ratio AC transformer (10, 15 and 30 A) ........................................................... HX0012
Mains power supply adapter ..................................................................................... HX0021
Chapter IV / V
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