Fluke 1744三相电能质量记录仪Memobox

  

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 temperature range: -10 °C to 55°C; 14 °F to 131°F
Operating temperature range: 0 °C to 35°C; 32 °F to 95°F
Storage temperature range: -20 °C to 60°C; -4 °F to 140°F
Reference temperature 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: <= 999 kV with PTs and ratio
Input resistance: App. 820 kΩ per chan. Lx-N Single phase (L1 or A, L2 or B, L3 or C connected): app. 300 kΩ
Intrinsic uncenrtainty: 0.1 % of VI
Voltage transformer: Ratio: <999 kv="" vi="" td="">
Ration selection: By job programming
Current input with Flexi Set
Input ranges II L1 or A, L2 or B, L3 or C, N: 15 A / 150 A / 1500 A / 3000 A ac
Measuring range: 0.75 A … 3000 A ac
Position influence: Max. ± 2 % of measured value – for distance conductor to meas. head > 30 mm
Stray field influence: < ± 2 A ac for Iext=500 A ac and distance to measuring head > 200 mm
Temperature coefficient: < 0.05 % / K
Current transformer: Ratio <= 999 kA / II
Ratio selection: By job programming
Connection: 3-phase, 3-phase +N, 2 phase L1 or A and L3 or C (2 W-meter-method) 7 pole connector
Current input for clamp
Input ranges II L1 or A, L2 or B, L3 or C, N: 0.5 V nominal (for II) 1.4 Vpeak
Intrinsic uncertainty: < 0.3 % of II
Max. overload: 10 V ac
Input resistance: App. 8.2 kΩ
Current transformer: Ratio Ω 999 kA / II
Power systems Delta, 2-Element Delta, Wye, Single Phase, Split Single Phase
Logger
Power supply
Functional Range: 88 V to 660 V absolute, 50 Hz / 60 Hz
100 V to 350 V dc Internal fuse: 630 mA T
Power consumption: 5 Watts
Ride through: Fluke 1745: Internal battery for typ. > 5 hours ride through with intelligent power management
Fluke 1743/44: 3 sec Capacitor
Fuse: Power supply fuse can be replaced in service facility only. Supply can be connected in parallel to measuring inputs (up to 660 V)
Display, indicators LEDs for status and voltage levels
Fluke 1745: LC-display with backlight for voltage, current, active power, phase sequence.
Memory
Intervals: Capacity 8 MB Flash-EPROM
A function > 12000 intervals for > 85 days with 10 min intervals
P function > 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 1743/1744: 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
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