Gossen MetraWatt METRAHIT ENERGY TRMS System Multimeter Operating Instructions Manual page 79

Crest Factor CF
 
Measuring range: 1.0 CF
Typical (not specified) maximum deviation:
CF  3.0
Frequency
02
10 to 70 Hz
02
70 to 440 Hz
05
440 Hz to 1 kHz
> 1 kHz Not valid
Permissible Crest Factor for Voltage and Current
2
Displayed Value [counts]
Curve 1:
Curve 2:
Curve 3:
Above figure: Influence of Crest Factor on Display Range
GMC-I Messtechnik GmbH
11.0, resolution: 0.1
3.0 < CF  5.0 5.0 < CF  10.0
0.2 0.5
0.5
Not valid
Not valid Not valid
Not valid Not valid
1
3
range from 0.6 to 60 V, 0.6 mA to 10 A
600 V range
power measurement
Additional error caused by the signal's crest factor:
 1,5 < CF 3
1% rdg.
 3 < CF 5
3% rdg.
Power Measurement (measuring ranges for a current clamp factor of 1)
– Single-Phase Measurement for Direct and Alternating Current
Measuring Measuring Resolution at
Function Range Upper Range
36,000 counts
360 W
3.6 mW 100 nW
36 mW
360 mW
100 W
3.6 W
36 W
W, VAr, VA
360 W
600 W 100 mW
3.6 kW 100 mW
6 kW
1
36 kW
1
360 kW
1
3600 kW 100
1
Ranges achieved with current clamp only
2  40 °C
Off-time > 30 min. and T
A
Technical Data
Overload Capacity
at 0 ... + 40 C
Limit
Value Time
10 nW
1 W
10 W
V: 600 V
V
1 mW
A: 10 A
continuous
10 mW
2
DC
10 A: 5 min.
AC
2
16 A: 30 sec.
TRMS
sine
1 W
1 W
10 W
W
79