The Clamp-On Harmonic Meter Model F25 is a portable, battery
operated power quality instrument.
The Model F25 performs current and voltage measurement
in True RMS as well as current and voltage in DC, and immediate readings of Total Harmonic
Distortion (%THD), Individual harmonic orders through the 25th, Distortion Factor (%DF),
Crest Factor (CF) and Peak of distorted currents and complex voltages.
Displays Min, Max,
and Average measurement values allowing recording for over 24 hours with an internal clock
logging record time. Frequency (Hz) can be measured through either the current or the
voltage.
The slim clamp-on style makes it easy to work around crowded breaker panels and
transformers.
Features
Designed for traditional and nonlinear loads
Simple clamp-on operation with power quality functions
Accurate TRMS amps or volts (AC or AC + DC)
Accurate DC measurements (A or V)
Recording mode, min, max, avg, max peak
Direct reading of %THD, %DF, CF and Peak (+ or -)
Individual harmonic orders DC to 25th in A or V
Smooth function for stable readings
Auto or manual ranging
Peak measurements (AC or DC)(+ or -)
K-Factor for proper transformer sizing
Percent ripple for DC
Transformer Harmonic Derating Factor (THDF)
Frequency measurements in A or V
Auto-off feature
31-segment analog bargraph
Low battery indicator
Battery voltage level check
Rugged Lexan construction
Audible control/warning indication
Triple display
Built to UL, CSA, GS, VDE, and IEC1010 safety
standards
Applications
True RMS and DC voltage and current values
Determine levels of voltage and current distortion
Identify harmonic distortion patterns and source of
voltage harmonics
Locate sources of harmonic current
Measure individual harmonics
Identify nonlinear loads
Prevent overheating in electrical distribution
equipment, false circuit breaker tripping, power factor correction capacitor failure
Locate overloaded neutral wires
Derate transformers and generators to prevent
overheating
Measure crest factor to evaluate harmonic content
and determine CBEMA derating factor
Electromagnetic Compatibility
Mechanical
Specifications
Electrostatic Discharge:
IEC 801-2: No influence: 4kV class 2;
Non-destructive: 15kV class 4
RF:
IEC 801-3: No influence: 3V/m class 2; Minor
influence: 10V/m class 3
Transients:
IEC 801-4: No influence: 2kV class 4
Electric Shocks:
IEC 801-5: No influence: 6kV class 3; CE
Mark
Envelope Protection:
IEC 529: IP 40
Drop Test:
IEC 68-2-32: 1m
Vibration:
IEC 68-2-6
Shocks:
IEC 817
Environmental
Specification
Safety /
Reference Specifications
Operating
Temperature:
14° to
131°F (-10° to 55°C)
Storage
Temperature:
-40° to
158°F (-40° to 70°C)
Operating
Humidity:
0 to 90%RH
to +40°C (75%RH @+55°C)
Storage
Humidity:
0 to 95%RH
Protection
Level:
Double
insulation EN61010-1, 600V, Cat. III, Pollution degree 2
Working
Voltage:
600VRMS
Dielectric
Test:
5.5kV,
50/60Hz, I minute
Agency
Approvals:
UL,
CSA,
GS, VDE
General Specifications
AC Current
Input Range
0.3 to
1000.0Arms, ±0.5 to ±1500.0A peak
Range
0.3 to
59.99A
60 to 1500A
peak
Basic Accuracy
2% Reading
±20cts
2% of Reading
±2cts
Crest Factor
>5
below 300A
Frequency Range
0.5Hz
to 5kHz
DC Current
Input Range
±0.03
to ±1500A DC; ±0.05 to ±1500A Peak
Range
±0.3 to
59.99A
±60 to
±1500A
Basic Accuracy
2% Reading
±20cts
2% Reading
±2cts
AC Volts
Input Range
0.05
to 600VRMS, ±0.05 to ±1500V Peak
Range
0.05 to
59.99V
60 to 1500V
Peak
Basic Accuracy
1% Reading
±10cts
1% Reading
±2cts
Input Impedance
1MΩ
Frequency Range
0.5Hz
to 5kHz
%THD
Range
0.2% to
1000%
Resolution
0.001
Basic Accuracy
0.2% to 600% THD:
5% Reading ±2cts
Frequency Range
Fundamental 40Hz
to 70Hz
Display
Digital: %THD and
True RMS (A or V), Bar graph: True RMS (A or V)
Individual Harmonics
Range
0.2% to 300% (%THD or %DF)
Rank
Hdc (DC component), H01 to H25
Resolution
0.001
Accuracy
Distortion>10%
and rank
Distortion<10%
and rank>H13: 10% Reading ±2cts
Distortion<10%
and rank
Distortion<10%
and rank>H13: 15% Reading ±2cts
Frequency Range
Fundamental 40 to 70Hz, 25th order
Display
Digital: %THD and Individual Harmonic value (A or V), Bar graph: True RMS (A or
V)
CBEMA THDF
Range
0.10 to
1.00
Rank
Hdc (DC
component), H01 to H25
Resolution
0.01
Basic Accuracy
2% Reading
±2cts
Frequency Range
Fundamental 40Hz
to 70Hz, 25th order
Display
Digital: THDF,
Bar graph: ARMS
Transformer K-Factor Rating
Range
1 to 10
10 to 30
Resolution
0.1
Basic Accuracy
5% Reading
±2cts
10% Reading
±2cts
Display
Digital:
%THD or K Factor, Bar graph: ARMS
Ripple
Input Range
.1% to 999.9%
Range
2 to
99.9%
100
to 999.9%
Resolution
0.001
Basic Accuracy
5%
Reading ±10cts
5%
Reading ±2cts
Display
Digital: % Ripple, Bar graph: DC (A or V)
Crest Factor
Input Range
1.00
to 10.00
Range
1.00 to
3.50
3.51 to
5.99
6.0 to 10.0
Resolution
0.01
Minimum Input
>5V
or >5A
Accuracy (40 to 450Hz)
2% Reading
±2cts
5% Reading
±2cts
10% Reading
±2cts
Display
Digital:
CF, Bar graph: True RMS (A or V)
Frequency
Input Range
0.5Hz
to 20,000Hz
Range
0.5Hz to
999.9Hz
1000Hz to
9999Hz
10kHz to
20kHz
Minimum Input
2A or
2V
Accuracy
0.2%
Reading ±2cts
0.5% Reading
±2cts
Display
Digital:
Hz, Bar graph: DC(A or V), True RMS (A or V)
DC Volts
Input Range
±0.05
to ±600V
Range
0.05 to
59.99V
60 to 1500V
Peak
Basic Accuracy
1% Reading
±10cts
1% Reading
±2cts
Input Impedance
1MΩ
Overload Protection
Voltage
1.5kV Peak
permanent
Current
1000A AC
(50/60Hz) permanent
Display:
Quadriplexed LCD, dual digital display (10mm,
5mm), 4 digits 10,000 counts, 31-segment bar graph
