Fluke 1750 电能记录仪

Conformance

 IEC 61999-1-4 Class 1, IEC 61000-4-30 Class A or B depending on measurement function, IEEE519, IEEE1159, IEEE1459 and EN50160

Clock/calendar

 Leap years, 2 4-hour clock

Real-time clock accuracy

 Not more than ± 1 s/day

Internal memory capacity for data

 At least 2 GB

Maximum recording period

 At least 31 days

Measurement time control

 Automatic

Maximum number of events

 Limited only by the size of the internal memory

Power requirements

 100 to 2 40 V rms ± 10 %, 47-63 Hz, 40 W

Operating time during interruptions (internal UPS operation)

 5 minutes per interruption, 60 minutes total operating time without recharging

Dimensions

 215 mm x 310 mm x 35 mm (8.5 in x 12.2 in x 3.5 in)

Mass (weight)

 6.3 kg (14 lb)

Measurement types

 One Phase Plus Neutral, One Phase IT No Neutral, One Phase Split Phase, Three Phase Wye, Three Phase Delta, Three Phase IT, Three Phase High Leg, Three Phase Open Leg, 2 Element Delta, 21/2 Element Wye

Input channels

 Voltage: 4 channels, ac/dc

 Current: 5 channels

Voltage channels

 Input resistance: 2 MΩ

 Input capacitance: < 2 0 pF

Current input characteristics

 2 V rms = full scale, 1 MΩ Input Impedance for ferro CTs, low impedance for Flexi-CTs

Measuring method

 Simultaneous digital sampling of voltage and current. Digital PLL synchronized sampling, internal frequency reference used during voltage drops.

PLL-synchronization source

 The PLL synchronizes to the A-N voltage for wye power types, and to the A-B voltage for delta power types. All listed power types can be characterized as either wye or delta.

PLL lock range

 42.5 to 69 Hz

Sampling frequency

 Voltage and current: 2 56 samples/cycle Inter-harmonics per IEC 61000-4-7: 2 560 points/10 cycles (50 Hz), 3072 points/12 cycles (60 Hz) Transient Voltage: 5 MHz

A/D resolution

 Voltage and current: 2 4 bits

 Transient voltage: 14 bits

Voltage measurement range

 AC voltage: 1000 V rms ± 10 % over range

 DC voltage: ± 1000 V + 10 % over range

Voltage crest factor

 3 or less

Current measurement range

 Depends on current probe used

Current crest factor

 4 or less

Measurement type

 True rms calculated continuously: every cycle, every 1/2 cycle, and every 10 or 12 cycles at 50 or 60 Hz respectively, as required by IEC 61000-4-30.

Measurement uncertainty

 AC: ± 0.2 % reading ± 0.1 % full scale, above 50 V rms

 DC: ± 0.5 % reading ± 0.2 % full scale, above 50 V dc

Measurement type

 True rms calculated continuously: every cycle, every 1/2 cycle, and every 10 or 12 cycles at 50 or 60 Hz respectively, as required by standards

Measurement type

 Waveshape sampling

Full scale

 8000 V pk

Sample resolution

 200 nS

Measurement uncertainty

 ± 5 % reading ± 2 0 V (test parameters: 1000 V dc, 1000 V rms, 100 kHz)

Measurement type

 True rms (one cycle calculation by overlapping each half cycle - voltage between lines is measured for 3P3W lines and phase voltage is measured for 3P4W lines)

Displayed data

 Amplitude and duration of swell

Measurement

 Same as rms voltage

Measurement type

 True rms (one cycle calculation by overlapping each half cycle - voltage between lines is measured for 3P3W lines and phase voltage is measured for 3P4W lines)

Displayed data

<span style="font-size:12.0pt;font-family:"Times New Roman","serif";