- Designed for industrial electrical testing
- Measures insulation from 0.01 MΩ to 2 GΩ
- Five insulation test voltages up to 1000 V
- Fluke Connect enables remote result sharing
Fluke 1587 FC TRMS Insulation Multimeter
The Fluke 1587 FC TRMS Insulation Multimeter combines a digital insulation tester and true-RMS digital multimeter in a compact handheld instrument for troubleshooting and preventative maintenance. It is recommended for industrial plant maintenance, industrial and utilities electricians, field service contractors and commercial HVAC/R technicians. Five test voltages from 50 V to 1000 V support insulation resistance measurements from 0.01 MΩ to 2 GΩ, while live circuit detection inhibits testing when terminal voltage above 30 V is detected.
Fluke Connect® enables remote monitoring and wireless saving and sharing of measurements on a smartphone, with app-based PI/DAR timed ratio tests, TrendIt™ graphs and temperature compensation. Multimeter functions include AC/DC voltage, DC millivolts, AC/DC milliamps, resistance, continuity, capacitance, frequency, diode testing and temperature measurement. A VFD low-pass filter supports variable frequency motor drive measurements, while automatic discharge handles capacitive voltage after insulation testing.
Key Benefits
- Combines insulation testing and true-RMS multimeter functions in one handheld instrument
- Fluke Connect® supports remote monitoring of measurements using a compatible smartphone
- Wireless saving and sharing reduces the need to record measurement results manually
- PI/DAR timed ratio tests and TrendIt™ graphs help identify moisture and contaminated insulation
- Temperature compensation supports consistent baselines and historical comparisons
- Historical asset tracking helps identify insulation degradation over time
- The VFD low-pass filter supports measurements on variable frequency motor drives
- Live circuit detection inhibits insulation testing when terminal voltage exceeds 30 V
- Automatic discharge removes capacitive voltage after insulation testing
- The 6000-count backlit display supports reading visibility
Common Applications
The Fluke 1587 FC TRMS Insulation Multimeter is suitable for a range of electrical testing and maintenance tasks, including:
- Industrial plant maintenance
- Industrial electrical testing
- Utilities electrical work
- Field service troubleshooting
- Commercial HVAC/R maintenance
- Electrical troubleshooting
- Preventative maintenance
- Variable frequency motor drive measurements
Why Choose This Model?
The Fluke 1587 FC suits users who require five insulation test voltages, measurements up to 2 GΩ, Fluke Connect® functions, VFD filtering and additional multimeter measurements. The Fluke 1577 provides two test voltages, measures insulation up to 600 MΩ and is recommended for electrical contractors and commercial electricians.
Product Comparison
| Feature | Fluke 1587 FC | Fluke 1577 |
|---|---|---|
| Recommended users | Industrial plant maintenance, industrial and utilities electricians, field service contractors and commercial HVAC/R technicians | Electrical contractors and commercial electricians |
| Insulation resistance range | 0.01 MΩ to 2 GΩ | 0.1 MΩ to 600 MΩ |
| Insulation test voltages | 50 V, 100 V, 250 V, 500 V and 1000 V | 500 V and 1000 V |
| Fluke Connect® functions | PI/DAR tests with TrendIt™ graphs, memory storage and temperature compensation | — |
| VFD low-pass filter | ✓ | — |
| Additional measurement functions | Capacitance, diode test, temperature, Min/Max, frequency and insulation test smoothing | — |
General Specifications
| Specification | Details |
|---|---|
| Product type | Handheld insulation tester and true-RMS digital multimeter |
| Model number | FLK-1587-FC |
| Display | Large 6000-count backlit display |
| Fluke Connect® | Supports remote viewing, saving and sharing of measurements using the Fluke Connect® app |
| App diagnostic functions | PI/DAR timed ratio tests with TrendIt™ graphs, memory storage and temperature compensation |
| Asset tracking | Historical tracking and trending through Fluke Connect® Assets, sold separately |
| Insulation test smoothing | Digital filtering dampens display fluctuations from rapidly changing inputs |
| VFD low-pass filter | 800 Hz low-pass filter for variable frequency motor drive measurements |
| Hold functions | Display Hold and AutoHold |
| Recording functions | Minimum, maximum and average readings |
| Ranging | Automatic and manual ranging |
| Live circuit detection | Inhibits an insulation test if terminal voltage is greater than 30 V before test initialisation |
| Automatic discharge | Discharge time less than 0.5 seconds for C = 1 μF or less |
| Maximum capacitive load | Operable with up to 1 μF load |
| Automatic power-off | Supported |
| Maximum terminal voltage | 1000 V |
| Safety category | CAT IV 600 V / CAT III 1000 V |
| Safety standards | IEC 61010-1, Pollution Degree 2 IEC 61010-2-033 |
| Electromagnetic compatibility | IEC 61326-1: Portable Electromagnetic Environment IEC 61326-2-2 CISPR 11: Group 1, Class A |
| Enclosure protection | IEC 60529: IP40, non-operating |
Measurement and Accuracy Specifications
| Measurement Function | Range and Resolution | Accuracy |
|---|---|---|
| AC voltage | 600.0 mV, 0.1 mV 6.000 V, 0.001 V 60.00 V, 0.01 V 600.0 V, 0.1 V 1000 V, 1 V |
50 Hz to 60 Hz: ±(1% + 3) from 600.0 mV to 600.0 V; ±(2% + 3) at 1000 V 60 Hz to 5000 Hz: ±(2% + 3) |
| Low-pass filter voltage | 600.0 mV, 0.1 mV 6.000 V, 0.001 V 60.00 V, 0.01 V 600.0 V, 0.1 V 1000 V, 1 V |
50 Hz to 60 Hz: ±(1% + 3) from 600.0 mV to 600.0 V; ±(2% + 3) at 1000 V 60 Hz to 400 Hz: +(2% + 3), -(6% – 3) |
| DC voltage | 6.000 V, 0.001 V 60.00 V, 0.01 V 600.0 V, 0.1 V 1000 V, 1 V |
±(0.09% + 2) |
| DC millivolts | 600.0 mV dc Resolution: 0.1 mV |
±(0.1% + 1) |
| AC current | 60 mA, 0.01 mA 400 mA, 0.1 mA 45 Hz to 1000 Hz |
±(1.5% + 2) |
| DC current | 60 mA, 0.01 mA 400 mA, 0.1 mA |
±(0.2% + 2) |
| Resistance | 600.0 Ω, 0.1 Ω 6.000 kΩ, 0.001 kΩ 60.00 kΩ, 0.01 kΩ 600.0 kΩ, 0.1 kΩ 6.000 MΩ, 0.001 MΩ 50.0 MΩ, 0.01 MΩ |
600.0 Ω to 6.000 MΩ: ±(0.9% + 2) 50.0 MΩ: ±(1.5% + 3) |
| Diode test | Displays voltage drop 0.6 V at 1.0 mA nominal test current |
±(2% + 3) |
| Frequency | 99.99 Hz, 0.01 Hz 999.9 Hz, 0.1 Hz 9.999 kHz, 0.001 kHz 99.99 kHz, 0.01 kHz |
±(0.1% + 1) |
| Capacitance | 1000 nF, 1 nF 10.00 μF, 0.01 μF 100.0 μF, 0.1 μF 9999 μF, 1 μF |
1000 nF and 10.00 μF: ±(1.2% + 2) 100.0 μF and 9999 μF: ±(1.2% + 90 counts) |
| Temperature | -40 °C to 537 °C, 0.1 °C -40 °F to 998 °F, 0.1 °F |
±(1% + 10 counts) °C ±(1% + 18 counts) °F |
| Insulation resistance | 50 V: 0.01 to 50.0 MΩ, 0.01 MΩ or 0.1 MΩ resolution 100 V: 0.01 to 100 MΩ, 0.01 MΩ, 0.1 MΩ or 1 MΩ resolution 250 V: 0.1 to 250 MΩ, 0.1 MΩ or 1 MΩ resolution 500 V: 0.1 to 500 MΩ, 0.1 MΩ or 1 MΩ resolution 1000 V: 0.1 MΩ to 2.0 GΩ, 0.1 MΩ, 1 MΩ or 100 MΩ resolution |
50 V and 100 V: ±(3% + 5 counts) 250 V and 500 V: ±(1.5% + 5 counts) 1000 V to 600 MΩ: ±(1.5% + 5 counts) 1000 V, 0.6 to 2.0 GΩ: ±(10% + 3 counts) |
Mechanical and General Information
| Specification | Details |
|---|---|
| Battery type | Four AA IEC LR6 alkaline batteries |
| Battery life | Meter use: 1000 hours At least 1000 insulation tests with fresh alkaline batteries at room temperature, based on 1000 V into 1 MΩ with 5 seconds on and 25 seconds off |
| Operating temperature | -20 °C to 55 °C (-4 °F to 131 °F) |
| Storage temperature | -40 °C to 60 °C (-40 °F to 140 °F) |
| Temperature coefficient | 0.05 x specified accuracy per °C for temperatures below 18 °C or above 28 °C |
| Relative humidity | Noncondensing 0% to 95% @ 10 °C to 30 °C 0% to 75% @ 30 °C to 40 °C 0% to 40% @ 40 °C to 55 °C |
| Dimensions | 5.0 cm H x 10.0 cm W x 20.3 cm L (1.97 in H x 3.94 in W x 8.00 in L) |
| Weight | 550 g (1.2 lb) |
| Operating altitude | 2000 m |
| Storage altitude | 12,000 m |
| Vibration | Random, 2 g, 5 Hz to 500 Hz per MIL-PRF-28800F, Class 2 instrument |
| Wireless frequency range | 2402 MHz to 2480 MHz |
| Wireless output power | Less than 10 mW |
Specification Notes
- Do not use the VFD low-pass filter to verify hazardous voltage; measure without the filter first
- The 50.0 MΩ resistance range specification applies at up to 80% relative humidity
- Temperature accuracy applies after 90 minutes of settling following a change in ambient temperature
Meta Description
Fluke 1587 FC TRMS Insulation Multimeter measures insulation to 2 GΩ, with five test voltages, Fluke Connect and a VFD filter.









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