Brief Introduction

FLUKE 438-II

Drive Measurement Details Motor Type 3 phase asynchronous (induction) Power Source Variable Frequency Drive Motor Frequency Range 40Hz to 70Hz Over/Under Voltage from Nominal V/f Curve (%) -15% to +15% Carrier Frequency Range 2.5kHz–20kHz Variable speed drive technology that is covered by the 438-II Inverter Type VSI only (voltage controlled) * Control Method V/f control, open-loop vector, closed loop vector, drives with encoders. Frequency 40 to 70 Hz * VSI drives are the most common drives. The alternative CSI drives are used in higher power applications. Variable speed drive technology NOT covered by the 438-II Inverter Type CSI (current source inverter) Motors type Synchronous (DC, stepper, permanent magnet etc.) Motor Frequency 70 Hz Mechanical specifications Mechanical measurements can be performed on direct online motors with a 3 wire connection. Motor measurement   Range Resolution Accuracy Default limit Mechanical motorPower 0.7 kW to 746 kW1 hp to 1000 hp 0.1 kW0.1 hp ±3% 1±3% 1 100% = rated power100% = rated power Torque 0 Nm to 10 000 Nm0 lb ft to 10 000 lb ft 0.1 Nm0.1 lb ft ±5% 1±5% 1 100% = rated torque100% = rated torque rpm 0 rpm to 3600 rpm 1 rpm ±3% 1 100% = rated rpm Efficiency 0% to 100% 0.10% ±3% 1 NA Unbalance (NEMA) 0% to 100% 0.10% ±0.15% 5% Harmonics VoltageFactor (NEMA) 0 to 0.20 0.1 ±1.5% 0.15 Unbalance DeratingFactor 0.7 to 1.0 0.1 indicative NA Harmonics DeratingFactor 0.7 to 1.0 0.1 indicative NA Total NEMA DeratingFactor 0.5 to 1.0 0.1 indicative NA Notes: Supports motor design types NEMA A, B, C, D & E and IEC type H and N.Rated torque is calculated from rated power and rated speed.Update rate of Motor Measurements is 1x per second.Default Trend duration is 1 week. 1Add 5% error when selecting Motor design type OtherSpecification valid for Motor Power > 30% of rated powerSpecification valid at stable operating temperature. Run the motor for at least 1 hour at full load(2-3 hours if the motor is 50 HP or higher) to obtain stable temperature Product Specifications Volt Model Measurement Range Resolution Accuracy Vrms (AC + DC)   1 V to 1000 V phase to neutral 0.01 V ±0.1% of nominal voltage 1 Vpk   1 Vpk to 1400 Vpk 1 V 5% of nominal voltage Voltage Crest Factor (CF)   1.0 > 2.8 0.01 ±5% Vrms½     0.1 V ±0.2% of nominal voltage Vfund     0.1 V ±0.1% of nominal voltage Amps (AC + DC) i430-Flex 1x  5 A to 6000 A 1 A ±0.5% ±5 counts i430-Flex 10x 0.5 A to 600 A 0.1 A ±0.5% ±5 counts 1mV/A 1x 5 A to 2000 A 1A ±0.5% ±5 counts 1mV/A 10x 0.5 A A to 200 A (AC only) 0.1 A ±0.5% ±5 counts Apk i430-Flex 8400 Apk 1 Arms ±5% 1mV/A 5500 Apk 1 Arms ±5% A Crest Factor (CF)   1 to 10 0.01 ±5% Amps½ i430-Flex 1x 5 A to 6000 A 1 A ±1% ±10 counts i430-Flex 10x 0.5 A to 600 A 0.1 A ±1% ±10 counts 1mV/A 1x 5 A to 2000 A 1 A ±1% ±10 counts 1mV/A 10x 0.5 A A to 200 A (AC only) 0.1 A ±1% ±10 counts Afund i430-Flex 1x 5 A to 6000 A 1 A ±0.5% ±5 counts i430-Flex 10x 0.5 A to 600 A 0.1 A ±0.5% ±5 counts 1mV/A 1x 5 A to 2000 A 1 A ±0.5% ±5 counts 1mV/A 10x 0.5 A A to 200 A (AC only) 0.1 A ±0.5% ±5 counts Hz Fluke 434 @ 50 Hz Nominal 42.50 Hz to 57.50 Hz 0.01 Hz ±0.01 Hz Fluke 434 @ 60 Hz Nominal 51.00 Hz to 69.00 Hz 0.01 Hz ±0.01 Hz Power Watts (VA, var) i430-Flex max 6000 MW 0.1 W to 1 MW ±1% ±10 counts 1 mV/A max 2000 MW 0.1 W to 1 MW ±1% ±10 counts Power Factor (Cos j/DPF) 0 to 1 0.001 ±0.1% @ nominal load conditions Energy kWh (kVAh, kvarh) i430-Flex 10x Depends on clamp scaling and V nominal ±1% ±10 counts Energy Loss i430-Flex 10x Depends on clamp scaling and V nominal ±1% ±10 counts Excluding line resistance accuracy Harmonics Harmonic Order (n) DC, 1 to 50 Grouping: Harmonic groups according to IEC 61000-4-7 Inter-Harmonic Order (n) OFF, 1 to 50 Grouping: Harmonic and Interharmonic subgroups according to IEC 61000-4-7 Volts % f 0.0% to 100% 0.1% ±0.1% ±n x 0.1% r 0.0% to 100% 0.1% ±0.1% ±n x 0.4% Absolute 0.0 to 1000 V 0.1 V ±5% 1 THD 0.0% to 100% 0.1% ±2.5% Amps % f 0.0% to 100% 0.1% ±0.1% ±n x 0.1% r 0.0% to 100% 0.1% ±0.1% ±n x 0.4% Absolute 0.0 to 600 A 0.1 A ±5% ±5 counts THD 0.0% to 100% 0.1% ±2.5% Watts % f or r 0.0% to 100% 0.1% ±n x 2% Absolute Depends on clamp scaling and V nominal — ±5% ±n x 2% ±10 counts THD 0.0% to 100% 0.1% ±5% Phase Angle -360° to +0° 1° ±n x 1° Flicker Plt, Pst, Pst (1 min) Pinst 0.00 to 20.00 0.01 ±5% Unbalance Volts % 0.0% to 20.0% 0.1% ±0.1% Amps % 0.0% to 20.0% 0.1% ±1% Mains Signaling Threshold Levels Threshold, limits and signaling duration is programable for two signaling frequencies — — Signaling Frequency 60 Hz to 3000 Hz 0.1 Hz   Relative V % 0% to 100% 0.10% ±0.4% Absolute V3s (3 second avg.) 0.0 V to 1000 V 0.1 V ±5% of nominal voltage General Specifications Case Design Rugged, shock proof with integrated protective holster Drip and dust proof IP51 according to IEC60529 when used in tilt stand position Shock and vibration Shock 30 g, vibration: 3 g sinusoid, random 0.03 g 2 /Hz according to MIL-PRF-28800F Class 2 Display Brightness: 200 cd/m 2 typ. using power adapter, 90 cd/m 2 typical using battery power Size: 127 x 88 mm (153 mm/6.0 in diagonal) LCD Resolution: 320 x 240 pixels Contrast and brightness: user-adjustable, temperature compensated Memory 8GB SD card (SDHC compliant, FAT32 formatted), up to 32GB optionally. Screen save and multiple data memories for storing data including recordings (dependent on memory size). Real-Time Clock Time and date stamp for Trend mode, Transient display, System Monitor and event capture Environmental Operating Temperature 0°C ~ +40°C; +40°C ~ +50°C excl. battery Storage Temperature -20°C ~ +60°C Humidity +10°C ~ +30°C: 95% RH non-condensing+30°C ~ +40°C: 75% RH non-condensing+40°C ~ +50°C: 45% RH non-condensing Maximum Operating Altitude Up to 2,000 m (6666 ft) for CAT IV 600 V, CAT III 1000 VUp to 3,000 m (10,000 ft) for CAT III 600 V, CAT II 1000 VMaximum storage altitude 12 km (40,000 ft) Electro-Magnetic-Compatibility (EMC) EN 61326 (2005-12) for emission and immunity Interfaces Mini-USB-B, Isolated USB port for PC connectivity SD card slot accessible behind instrument battery Warranty Three years (parts and labor) on main instrument, one year on accessories View full family specifications » 1. ±5% if ≥ 1% of nominal voltage ±0.05% of nominal voltage if < 1% of nominal voltage2. 50Hz/60Hz nominal frequency according to IEC 61000-4-303. 400Hz measurements are not supported for Flicker, Mains Signaling and Monitor Mode4. For nominal voltage 50 V to 500 V