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MODEL
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3945
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ELECTRICAL
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Sampling Frequency
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256 samples per cycle
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Data Storage
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4MB partitioned for waveforms, transients, alarms and trend recording
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Voltage (TRMS)
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Phase-to-Phase: 830V Phase-to-Neutral: 480V
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Current (TRMS)
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MN Clamp: 0 to 6A/120A or 0 to 240A SR Clamp: 0 to 1200A
MR Clamp: 0 to 1200AAC, 0 to 1400ADC AmpFlex™: 0 to 6500A1
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MEASUREMENT
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RANGE
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RESOLUTION
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ACCURACY
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Single-Phase RMS Voltages
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6 to 480V
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0.1V
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± 0.5% ± 2cts
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Phase-to-Phase RMS Voltages
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10 to 830V
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0.1V
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± 0.5% ± 2cts
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Single-Phase Peak Voltages
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6 to 680V
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1V
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± (1% + 5cts)
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Phase-to-Phase Peak Voltages
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10 to 1360V
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1V
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± (1% + 5cts)
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Frequency (Hz)
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40 to 69Hz
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0.01Hz
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± 0.01Hz
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DC Voltage Component
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6 to 650V
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0.1V
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± 1% ± 2cts
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Current Probes (Arms) MN Clamp
SR Clamp
AmpFlex™ Probe
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0 to 240A
0 to 1200A
10 to 6500A
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0.1A
0.1A; 1A ≥ 1000A
0.1A; 1A ≥ 1000A
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± (0.5% + 2cts)
± (0.5% + 2cts)
± (0.5% + 1A)
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Active (Real) Power (kW)
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0 to 9999kW
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4 digits (10,000ct)
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± 1% ± 1ct @ PF ≥0.8
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Reactive Power (kVAR)
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0 to 9999kVAR
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4 digits (10,000ct)
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± 1% ± 1ct @ PF ≤0.8
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Apparent Power (kVA)
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0 to 9999kVA
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4 digits (10,000ct)
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± 1% ± 1ct
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Power Factor (PF & DPF)
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-1.000 to 1.000
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0.001
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±(1.5% + 0.01)
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Active Energy (kWh)
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0 to 9999MWh
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4 digits (10,000ct)
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± 1% ± 1ct @ PF ≥0.8
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Reactive Energy (kVARh)
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0 to 9999MVARh
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4 digits (10,000ct)
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± 1% ± 1ct @ PF ≤0.8
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Apparent Energy (kVAh)
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0 to 9999MVAh
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4 digits (10,000ct)
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± 1% ± 1ct
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Unbalance (V & A)
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0 to 100%
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0.1%
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± 1% ± 1ct
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Phase Angle (V–A, A–A, V–V))
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-179° to +180°
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1°
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± 2° ± 1ct
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Harmonics (1st to 50th)
F = 40 to 69Hz
(V ≥ 50V, A > Inom/100)
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0 to 999%
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0.1%
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±1% + 5cts
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Total Harmonic Distortion (V & A)
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0 to 999%
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0.1%
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±1% + 5cts
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K-factor (Akf)
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1 to 99.99
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0.01
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±5% ± 1ct
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Flicker (PST)
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0.00 to 9.99
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0.01
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–
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Power Source
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9.6V NiMH rechargeable battery pack AC supply: 110/230VAC ±20% (50/60Hz)
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Battery Life
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6 hrs with display on; ≤96 hrs with display off (record mode)
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ENVIRONMENTAL
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Operating Temperature
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32° to 122°F (0° to 50°C)
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Storage Temperature
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-4° to +122°F (-20° to +50°C)
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MECHANICAL
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Display
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1/4 VGA (320 x 240) color LCD
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Dimensions
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9.5 x 7 x 2"" (240 x 180 x 55mm)
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Weight
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4.6 lbs (2.1kg)
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SAFETY
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Safety Rating
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EN 61010-1, 600V Cat. III, Pollution Degree 2
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Double Insulation
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Yes
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CE Mark
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Yes
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