HIOKI 3286-20 Clamp On Power Hi-Tester

The 3286-20 provides the following 2 types of power factor measurement. If the waveform includes harmonic distortion, there will be a difference between the two measurement values, and the method must be selected accordingly.
Power factor derived by phase discrimination (cos Φ): 1Φ Power Factor meter and 3Φ Power Factor meter mode From the phase information for the fundamental frequency component, cos Φ is calculated. This is suitable for assessing the quality of a power supply.

Power factor (effective value power factor) derived from effective power Φ apparent power: 1Φ Power meter mode This is calculated from the power value including harmonic components (effective power Φ apparent power). This is suitable for evaluating the performance of standalone load equipment and similar cases.
* It is not possible to calculate the effective power factor of a three-phase line.

The 3286-20's three-phase power measurement method calculates and displays the power values for a sine wave input at 50/60 Hz, assuming it is balanced and there is no distortion. Accurate measurement is not possible on a three-phase line if it is not balanced, for example when controlled by an inverter or thyristor.

Features
Use as a single-phase power meter or power factor meter (3kW to 660kW)
Simple checking of three-phase lines (6kW to 1200kW range)
Check power supply fluctuations
1000A, 1000 Hz, peak and harmonic measurement
True RMS (effective value) display method
Optional printer (9442 Printer)

Specification:
Measurement Lines:     Single-phase/two-wires, Three-phase/three-wires (balanced load only)
Measurement Items:     Voltage, current, voltage/current peak, effective/reactive/apparent power(Single-phase or 3-phase), power factor, reactivity, phase angle, frequency, phase detection(3-phase), voltage/current harmonic levels(up to 20th)
Measurement Ranges:    Voltage: 150.0 V to 600 V, 3 ranges
Current: 20.00 to 1000 A, 3 ranges
Power: 3.000 kW to 1200 kW, 18 combination patterns
Note: 3-phase power is calculated and displayed on the basis of a balanced, 50/60 Hz, sine wave input. For apparent power and reactive power, the unit of watts in the above table is replaced by VA and var respectively.
Basic Accuracy:     Power/single-phase: ±2.3 % rdg. ±5 dgt., Power/3-phase: ±3.0 % rdg. ±10 dgt. (at balanced load)
Voltage/Current Accuracy:     Voltage: ±1.0 % rdg. ±3 dgt., Current: ±1.3 % rdg. ±3 dgt. (at 45 to 66 Hz)
Frequency characteristics (at AC current / voltage):     AC current : 45 to 1 kHz AC voltage : 30 to 1 kHz
Other functions :     Phase detection, Record (Max. value/Min. value), Battery capacity display, Data hold, Auto power off, Data output (RS-232C interface by optical insulating coupler)
Display Update Rate:     NORMAL: approx. 1 time/ sec, SLOW: 1 time/ 3-sec, HARM meas.: approx. 1 time/ 2-sec
Power Supply:     6LR61 alkaline battery × 1 (continuous operation max. 25 hours), 6F22 manganese battery × 1 (continuous operation max. 10 hours)
Core jaw dia.:     Ø55 mm(2.17 in) or 80 mm (3.15 in) × 20 mm (0.79 in) busbar
Dimensions:     100 mm(3.94 in)W × 287 mm(11.3 in)H × 39 mm(1.54 in)D
Weight:     650 g (22.6 oz)
Accessories:     9635 VOLTAGE CORD (1), 9245 CARRYING CASE, (1), Hand strap (1)