CLAMP-ON NETWORK
PARAMETER METER
NC8
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automatic change of measuring ranges,
zeroing when measuring d.c. current (elimination of hysteresis
effect),
measurement of true rms a.c. current and a.c. voltage,
measurement of the d.c. voltage and d.c. current,
measurement of active, reactive and apparent power in 1-phase
or 3-phase balanced networks,
measurement of THD and DF coefficients in % or the rms value of
each harmonic signal (up to the 25 th harmonic),
measurement of the crest factor (CF),
measurement of the signal pulsation factor (RIPPLE),
measurement of the power factor (PF),
measurement of the resistance up to 3000 W,
measurement of the p-n junction voltage.
Additional functions
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stoppage of the measurement result on the display (HOLD),
display of MIN, MAX, MAX-MIN and AVG values,
relative measurements (REL),
measurement of peak values (PEAK),
acoustic signalling of the circuit continuity (for R < 20 W) ,
battery discharge signalling,
meter automatic switching off (with the possibility to block this
function).
2. TECHNICAL DATA
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Read-out field
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Input resistance when
measuring the voltage
Measured signal frequency
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Peak factor
Working temperature range
Storage temperature range
Air relative humidity
Power supply
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Battery life
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Jaws opening and internal diameter
Housing protection degree
Overall dimensions
Weight
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1. APPLICATION
The NC8 digital clamp-on power and harmonic meter is a multifunctional instrument destined for measuring of power network
parameters at a voltage up to 600 V. The measurement of
d.c. current or true rms a.c. current (with a constant component) is
carried on by means of jaws, without the necessity to disconnect the
tested electrical circuit.
The meter housing fulfils safety requirements according
IEC 1010-1+1A standard for installation category IV.
The measurement results, units of measured values and additional
information are displayed on a LCD reading field. The change of meter
operating states is signalled by an audible signal.
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increased safety handling through the application of a flange
securing against any slide down of the operator palm towards the
jaws,
possibility of a simultaneous reading of two quantities (two
reading fields),
display of measured quantity units and auxiliary function symbols,
3 MW
30... 5000 Hz
(2500 Hz, a.c. current)
£5
0...23...45°C
-10 ...60°C
25... 80%
alkaline batteries
4 ´ 1.5 V, LR03,
AAA, AM4 (or similar)
ca 70 h of continuous
operation
34 mm
IP 40 (acc. IEC 529)
249 ´ 94 ´ 36 mm
290 g (with batteries)
Safety requirements
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Handling safety:
- requirements and tests acc.
- installation category
- working rms voltage
Features:
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LCD, two digital fields
and graphic characters
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Safety of used accessories:
- requirements and tests acc.
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IEC 1010-1+A1(meter)
IV
up to 600 V
IEC 1010-2-031
Electromagnetic compatibility:
- immunity
- emission
EN 50082-1
EN 50081-1
LUMEL S.A., ul. Sulechowska 1, 65-022 Zielona Góra, Poland / tel.: 329 53 02, 329 53 04, fax: (48-68) 325 40 91 / e-mail:export@lumel.com.pl / www.lumel.com.pl
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3. RANGES AND MEASUREMENT ACCURACY
MEASURED QUANTITY
MEASURING RANGE
MEASUREMENT ACCURACY
a.c., a.c.+ d.c. current
0.1...500 A (CF = 1.41)
± (1% rdg + 2 digits)
d.c. current
0.1...707 A
± (1% rdg + 2 digits)
a.c., a.c.+ d.c. voltage
0...630 V
± (0.5% rdg + 2 digits)
d.c. voltage
0...890 V
± (0.5% rdg + 2 digits)
Active, reactive and apparent power (P,Q,S)
5... 9000 W, var, VA
9.00... 90 kW, kvar, kVA
90.0... 630 kW, kvar, kVA
± (2.5% rdg + 5 digits)
Active power factor (PF)
-1...0...1
± (5% rdg + 1 digit)
Crest factor (CF)
5... 50 A, V
± (2.5% rdg + 1 digit)
Resistance (R)
0... 3000 W
± (0.2% rdg + 1 digit)
Pulsation factor (RIPPLE)
2... 500%
± (3% rdg + 1 digit)
Harmonics
1... 13
14... 25
± (3% rdg + 1 digit)
± (5% rdg + 1 digit)
Total harmonic distortion factor (THD)
5... 50 A, V
> 50 A, V
± (5% rdg + 2 digits)
± (3% rdg + 2 digits)
Distortion faktor (DF)
5... 50 A, V
> 50 A, V
± (5% rdg + 2 digits)
± (3% rdg + 2 digits)
p-n junction voltage
0... 2 V
± (0.2% rdg + 1 digit)
rdg = reading or indicated value
Accessories
We deliver with the meter:
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service manual ................................................................................................... 1 pc
case-holder ........................................................................................................ 1 pc
1.5 V alkaline battery, LR03, AAA or AM4 or similar ........................................ 4 pcs
measuring leads, red and black (rated voltage = 1000 V) ................................ 2 pcs
crocodile clips, red and black (rated voltage = 1000 V) ................................... 2 pcs
test probe, red and black (rated voltage = 1000 V) .......................................... 2 pcs
guarantee card ................................................................................................... 1 pc
4. ORDERING WAY
When ordering give only the meter name and type.
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July 2005
LUMEL S.A., ul. Sulechowska 1, 65-022 Zielona Góra, Poland / tel.: 329 53 02, 329 53 04, fax: (48-68) 325 40 91 / e-mail:export@lumel.com.pl / www.lumel.com.pl