Fluke 1745 Power Quality Logger

Fluke 1745 Power Quality Logger




Jakarta Office : 021-45850618

Surabaya Office : 031-8421264

Fluke 1745 Power Quality Logger


Power quality logging is easy with a compact and rugged Fluke power meter

The Fluke 1745 Three-phase Power Quality Logger is an everyday power meter for technicians who troubleshoot and analyze power quality issues. Capable of simultaneously logging up to 500 power parameters for up to 85 days and monitoring for events, these power loggers help uncover intermittent and hard-to-find power quality issues. The included PQ Log software quickly assesses the quality of power at the service entrance, substation, or at the load, according to the latest EN50160 standard.


  • Disturbance analysis – Uncover root cause of equipment malfunction for later mitigation and predictive maintenance
  • Quality of service compliance – Validate incoming power quality at the service entrance
  • Power quality studies – Assess baseline power quality to validate compatibility with critical systems before installation
  • Load studies – Verify electrical system capacity before adding loads
  • Energy and power quality assessment – Validate performance of facility improvements by quantifying energy consumption, power factor, and general power quality before and after improvements


General Data

Intrinsic error Refers to the reference conditions and is guaranteed for two 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 Class B2 acc. IEC 60654-1
Housing robust, fully insulated housing and accessories
Protection type IP50 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
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
Intrinsic uncertainty < 2% of II
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


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 Internal battery for typ. > 5 hours ride through with intelligent power management
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
LC-display with backlight for voltage, current, active power, phase sequence.
Memory Capacity 8 MB Flash-EPROM
Intervals 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 282 x 216 x 74 mm (115 x 88 x 33 in)
Weight approx. 3 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: 2 s/day at 23°C; 74°F ±2 K