Fluke 1750 General Specifications, Input Specifications, Synchronization and Sampling

1750

Operators Manual

Specifications for the System: Recorder and Power Analyze Software

General Specifications

Power Quality Measurement Standards
Conformance	IEC 61000-2-4:2002 Class 1, IEC 61000-4-30, IEEE519, IEEE1159,
	IEEE1459, IEC 61557-12:2008, and EN50160
Clock/Calendar	Leap years, 24-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 240 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 x 310 x 35 mm (8.5 x 12.2 x 3.5 inch)
Mass (Weight)	6.3 kg (14 lbs)

Input Specifications

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, 2 ½
	Element Wye
Input Channels	Voltage: 5 channels, AC/DC Current: 5 channels
Voltage Channels	Input resistance: 2 MΩ
	Input capacitance: <20 pF
Current Channels	Self-identifying probes
	Types available: current clamps, Flexi-CTs
Measuring Method	Simultaneous digital sampling of voltage and current. Digital PLL
	synchronized sampling, internal frequency reference used during
	voltage drops.

Synchronization and Sampling

PLL-Synchronization Source	The PLL synchronizes to the A-N/L1-N voltage for wye power types,
	and to the A-B/L1-L2 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: 256 samples/cycle
	Inter-harmonics per IEC61000-4-7: 2560 points / 10 cycles (50 Hz),
	3072 points/12 cycles (60 Hz)
	Transient Voltage: 5 MHz
A/D Resolution	Voltage and current: 24 bits
	Transient voltage: 14 bits

Voltage and Current Measurements

Voltage Measurement Range	AC voltage: 1000 V rms ± 10 % Overrange
	DC voltage: ± 1000 V + 10 % Overrange
Voltage Crest Factor	3 or less
Voltage Input Impedance	2 MΩ
Current Measurement Range	Depends on current probe used
Current Crest Factor	4 or less
Current Input Characteristics	2 V rms = full scale, 1 MΩ Input Impedance for ferro CTs, low
	impedance for Flexi-CTs

50