The Fluke 1750 Three-Phase Power Quality Recorder is a high-precision, headless power monitoring instrument designed for compliance with IEC 61000-4-30 Class A standards. It automatically records every power quality parameter on all channels continuously, offering threshold-free post-processing analysis. Users configure the device and visualize real-time data wirelessly using a PDA or PC.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Ethernet (100Base-T RJ-45), Bluetooth Class 1, SD Card Slot |
| Display | None (headless design; utilizes wireless PDA or PC as virtual front panel/display) |
| Calibration Cycle | 1 year (recommended) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 85 V to 264 V AC, 47 Hz to 63 Hz, or 120 V to 370 V DC; 40 VA maximum |
| Operating Temperature | 0 °C to 50 °C |
| Dimensions (W×H×D) | 215 mm × 310 mm × 91 mm |
| Weight | 3.0 kg |
Input Channels & Configuration
| Parameter | Value |
|---|---|
| Number of Voltage Inputs | 5 channels (A/L1, B/L2, C/L3, N, G) |
| Number of Current Inputs | 5 channels (A/L1, B/L2, C/L3, N, G) |
| Phase Configurations Supported | 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 1/2 Element Wye |
| Voltage Input Coupling | DC coupled |
| Input Terminals Type | Single-lead voltage connections and self-identifying current probes |
Measurement Ranges & Input Characteristics
| Parameter | Value |
|---|---|
| Direct Voltage Range | 0 to 1000 Vrms (AC or DC) |
| Transient Voltage Range | 8000 Vpk |
| Direct Current Input Range | 50 mV to 1.414 Vrms with 2 V peak (probe dependent) |
| Voltage Input Impedance | 4 MΩ per channel to ground |
| Current Input Impedance | 50 kΩ |
| Maximum Voltage Input | 1000 Vrms |
Measurement Performance & Accuracy
| Parameter | Value |
|---|---|
| Mains Frequency Range | 45 Hz to 65 Hz |
| PLL Frequency Synchronization Range | 42.5 Hz to 69 Hz |
| Voltage Resolution | 16-bit (for power parameters), 14-bit (for 5 MHz transient sampling) |
| Sampling Rate (Power Parameters) | 256 samples per cycle (phase locked to mains) |
| Sampling Rate (Transient) | 5 MHz (simultaneous on all voltage channels) |
| Voltage Measurement Accuracy | ±0.1% of Vdin (from 10% to 150% of Vdin) |
| Frequency Measurement Accuracy | ±10 mHz |
| Standard Compliance | IEC 61000-4-30 Class A |
Power & Harmonic Analysis Functions
| Parameter | Value |
|---|---|
| Measured Parameters | Voltage, current, active power (P), apparent power (S), reactive power (Q), power factor, frequency, THD, harmonics, interharmonics, flicker, unbalance, transients |
| Harmonic Measurement Bandwidth | Up to 50th harmonic |
| Flicker Measurement | Pst and Plt in accordance with IEC 61000-4-15 |
| Interharmonics Analysis | In accordance with IEC 61000-4-7 |
| Voltage Crest Factor | Calculated and logged |
| Current Crest Factor | Calculated and logged |
Data Logging, Memory & Visualization
| Parameter | Value |
|---|---|
| Internal Storage Capacity | SD Memory Card (2 GB standard, removable) |
| Logging Rate | Every cycle, continuously without thresholds |
| Setup Method | Threshold-free setup; thresholds applied post-collection via PC software |
| Software | Fluke Power Analyze software (for data retrieval, analysis, and reporting) |
| Data Retrieval Options | Via SD card, Ethernet, or Bluetooth |
System Interfaces & Connectivity
| Parameter | Value |
|---|---|
| External Synchronization Input | GPS time synchronization input (via optional GPS receiver) |
| Status Indicators | LEDs for Power, Status, LAN, Bluetooth, Card, Phase/Voltage Channels |
Power Supply & Safety Compliance
| Parameter | Value |
|---|---|
| Safety Category Rating | CAT IV 600 V / CAT III 1000 V |
| Safety Standards | IEC/EN 61010-1 |
| EMC Standards | EN 61326-1 |
| Internal Backup Battery | NiMH battery, >5 minutes backup, typical recharge time 4 hours |
Physical & Environmental Specifications
| Parameter | Value |
|---|---|
| Storage Temperature Range | -20 °C to 50 °C (with battery); -20 °C to 60 °C (without battery) |
| Operating Humidity Range | 10% to 90% RH non-condensing |
| Enclosure Protection Class | IP30 |
Accuracy & Performance
| Parameter | Value |
|---|---|
| Current Accuracy (Instrument Only) | ±0.1% of reading ± 0.02% of range |
| Active Power Accuracy | ±0.2% of reading + sensor accuracy |
| Phase Angle Accuracy (Voltage to Voltage) | ±0.05° |
| Phase Angle Accuracy (Voltage to Current) | ±0.15° (instrument only) |
| Power Factor Accuracy | ±0.002 + sensor accuracy |
| Clock Accuracy (Internal) | ±1 s per day |
| Clock Accuracy (GPS Synchronized) | ±16.7 µs (relative to GPS UTC) |
Power & Battery
| Parameter | Value |
|---|---|
| Power Consumption | 40 VA max. |
| Internal Battery Chemistry | NiMH (Nickel-Metal Hydride) |
| Battery Charge Time | 4 hours (with instrument turned off) |
| Battery Ride-Through Time | 5 minutes minimum |
Environmental
| Parameter | Value |
|---|---|
| Maximum Operating Altitude | 2000 m (CAT IV 600 V / CAT III 1000 V), up to 3000 m (derated to CAT III 600 V / CAT II 1000 V) |
Measurement Resolution
| Parameter | Value |
|---|---|
| A/D Converter Resolution | 24-bit (continuous sampling on all channels) |
| Transient Sampling Resolution | 14-bit |
Connectivity
| Parameter | Value |
|---|---|
| Bluetooth Class & Range | Bluetooth v1.2 Class 1, up to 100 m (328 ft) typical range |
| Ethernet Port Specification | RJ-45 (10/100 Base-T with Auto MDIX) |
Measurement Characteristics
| Parameter | Value |
|---|---|
| Input Range Selection | Fully automatic ranging |
| Total Simultaneous Channels | 9 channels (4 voltage and 5 current) |
Technology
Digital power quality auditing and transient analysis
Applications
Power quality auditing, disturbance analysis, energy assessments, and compliance testing
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