Measurements are displayed graphically and numerically with colored waveforms. The menu driven meter features pop up functions which are push button activated. All necessary measurements are available for a comprehensive power system check or analysis to 830 Volts rms, 6500 Amps rms, along with a complete family of clamp on and flexible probes.

The 3945-B PowerPad has an event capture function, a transient capture function, a logging function, an optical RS-232, and advanced DataView software which can pilot the PowerPad as well as provide comprehensive reports.

3945-B with MN93 Features

PowerPad Model 3945-B with MN93 (240 Amp) Current Probes
True RMS single, 2, and 3 phase measurements at 256 samples per cycle, plus DC
Real time color waveforms
Easy on screen setup
True RMS current and voltage measurements
Measures DC volts, power, and amps
Display and capture current, voltage, and harmonics to the 50th order, including direction in real time
Phasor Diagram Display
VAR, VA, and W per phase and total
kWh, VARh, and KVAh
Neutral current display for three-phase
Transformer K-factor display
Power Factor displacement PF display
Captures up to a maximum of50 transients
Short term flicker display
Phase unbalance for current and voltage
total and individual Harmonic Distortion

Applications

Verification of power distribution circuits
recording and measurement of power system quality - kW, VA, VAR
Energy metering - kVAh, VARh, kWh
In plant troubleshooting of individual machinery and power distribution panels
Monitor pad mount transformers
Determine harmonic problems originating from load or source
Monitor phase balances
Determine transformer K-factor
Many more functions

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

¹ Crest Factor at 6500A = 1