Variable-frequency drives (VFD) V & Hz measurement. LoZ voltage measurement to drain ghost voltages. Check 3Φ phase sequence. Motor Inrush current measurement. True RMS reading on AC and DC+AC mode. (3901)
Product Features
Variable-frequency drives (VFD) V & Hz measurement.
LoZ voltage measurement to drain ghost voltages.
Check 3Φ phase sequence.
Motor Inrush current measurement.
True RMS reading on AC and DC+AC mode. (3901)
uA measurement for HVAC flame sensors. (3901)
mV measurement range to interface with other accessories. (3901)
Crest Factor (C-F) & Harmonic Ratio (H-R) measurement. (3901)
Backlight LCD display . (3901)
Data hold, Auto hold & Peak hold mode.
Max/Min record mode.
Data memory & read function
Model
3900
3901
AC current
Range
99.99A / 999.9A
99.99A / 999.9A
Accuracy
±2%±20dgts (50, 60Hz)
±4%±20dgts (40 to 400Hz)
±2%±20dgts (50, 60Hz)
±4%±20dgts (40 to 400Hz)
AC voltage
Range
999.9V
999.9mV to 999.9V
Accuracy
±1%±20dgts (50, 60Hz)
±2%±20dgts (40 to 400Hz)
±1%±10dgts (50, 60Hz)
±2%±10dgts (40 to 400Hz)
DC voltage
Range
99.99V / 999.9V
999.9mV to 999.9V
Accuracy
±1%±10dgts
±1%±10dgts
Resistance
Range
999.9Ω/99.99KΩ
999.9Ω to 999.9KΩ
Accuracy
±1%±10dgts
±1%±10dgts
Diode
Range
3.000V
3.000V
Accuracy
±1%±10dgt
±1%±10dgt
Frequency
Range
0.5Hz to 400.0Hz
40Hz to 1KHz
Accuracy
±0.5%rdg±2dgts
±0.5%rdg±2dgts
mA (AC+DC)
Range
–
99.99μA/999.9μA
Accuracy
–
±1%±10dgts
Continuity
≤40Ω±30Ω
<40Ω
3Φ Phase sequence indication
yes
yes
ACA Inrush current
yes
yes
Data hold
yes
yes
Auto hold
yes
yes
Peak hold
yes
yes
Max/Min
yes
yes
Memory/Read
yes
yes
Accessories
Instruction Manual, Battery, Carrying case & Test Lead
