Specification :

General Data
Intrinsic error
Refers to the reference conditions and is guaranteed for two years
Warranty
2 years
Recalibration interval
2 years recommended
Quality system
developed, designed, and manufactured according to DIN ISO 9001
Reference conditions
23 ° C ± 2 K; 74 ° F ± 2 K , Vm= 230 V ± 10% , 50 Hz ± 0.1 Hz or 60 Hz ± 0.1 Hz
Phase sequence: L1, L2, L3
Interval length: 10 minutes
Wye connection: ( L1, L2, L3 to N)
Power supply: 88 V ... 265 V AC
Environment conditions
Working temp. range: -10 ° C to 55° C; 14 ° F to 131° F
Operating temp. range: 0 ° C to 35° C; 32 ° F to 95° F
Storage temp. range: -20 ° C to 60° C; -4 ° F to 140° F
Reference temp. range: 23 ° C ± 2 K; 74 ° F ± 2 K
Relative humidity: Fluke 1745: Class B2 acc. IEC 60654-1
Fluke 1744/ 43: Class C2 acc. IEC 60654-1
Housing
robust, fully insulated housing and accessories
Protection type
Fluke 1745: IP50 as per EN 60529
Fluke 1744/ 1743: IP65 as per EN 60529
Safety
IEC/ EN 61010-1 600 V CAT III, 300 V CAT IV, pollution degree 2, double insulation
Type test voltage
5.2 kV rms, 50 Hz / 60 Hz, 5 s
EMC
Emission: IEC/ EN 61326-1, EN55022
Immunity: IEC/ EN 61326-1

Voltage and Current Measurement
Input voltage
Input range VI P-N: max 480 V AC
Input range VI P-P: max 830 V AC
Max. overload voltage: 1.2 VI
Input range selection: By job programming
Connections: P-P or P-N, 1- or 3-phase
Nominal voltage VN: 30000 intervals for > 212 days with 10 min intervals
Events: > 13000
Memory model: linear, circular
Interface
RS 232, 9600...115 000 Baud, automatic Baud rate selection, 3-wire communication
Dimensions
Fluke 1745: 282 mm x 216 mm x 74 mm ( 115in x 88in x 33in)
Fluke 1743/ 1744: 170 mm x 125 mm x 55 mm ( 69in x 51in x 22in)
Weight
Fluke 1745: approx. 3 kg
Fluke 1744/ 1743: approx. 2 kg
Measurement
A/ D converter: 16 bit, sample rate: 10.24 kHz
Anti-aliasing filter: FIR-Filter, fc = 4.9 kHz
Frequency response: Uncertainty < 1 % of Vm for 40 Hz to 2500 Hz
Interval length: 1, 3, 5, 10, 30 s, 1, 5, 10, 15, 60 minutes
Averaging time for Min/ max values: ½ , 1 mains period, 200 ms, 1 , 3 , 5 s
Time base: Resolution: 10 ms ( at 50 Hz) , deviation: 2s/ day at 23 ° C; 74 ° F ± 2 K