The Fluke 1587 and 1577 Insulation Multimeters combine a digital insulation tester with a full-featured digital multimeter in a single compact, handheld unit, which provides maximum versatility for both troubleshooting and preventative maintenance. Like other tools that you have come to expect from Fluke, the 1587 and 1577 are rugged, reliable, and easy to use. Whether you work on motors, generators, cables, or switch-gear, the Fluke 1587/1577 Insulation Multimeters are ideally suited to help you with your tasks.
The Fluke 1587 and 1577 insulation multimeters combine high‑voltage insulation testing with a full suite of electrical measurement functions, including AC/DC voltage, current, resistance, continuity, diode, capacitance, and temperature. Both models feature a large backlit display, live‑circuit detection, auto‑discharge of capacitive voltage, and CAT III 1000 V / CAT IV 600 V measurement categories for added user protection.
The leaflet lists detailed technical data, environmental ratings, battery life, and included accessories such as a remote probe, test leads, alligator clips, and a K‑type thermocouple (1587 only). Optional accessories like the Fluke TPAK magnetic tool hanger and soft case are also described, along with ordering information and warranty details.
| Insulation test range | 0.01 MΩ to 2 GΩ (1587) / 0.1 MΩ to 600 MΩ (1577) |
|---|---|
| Test voltages | 50 V, 100 V, 250 V, 500 V, 1000 V (1587) / 500 V, 1000 V (1577) |
| Measurement category | CAT III 1000 V, CAT IV 600 V |
| Input impedance | 10 MΩ (nominal), < 100 pF |
| Battery life (insulation tests) | ≥ 1000 insulation tests per set of fresh AA batteries |
| Weight | 550 g (1.2 lb) |
| Operating temperature range | -20 °C to 55 °C |
The Fluke 1587 can test insulation at 50 V, 100 V, 250 V, 500 V, and 1000 V.
The auto‑discharge clears capacitive voltage in less than 0.5 second for a capacitance of 1 pF or less.
Included accessories are a remote probe, test leads, alligator clips, and a K‑type thermocouple (1587 only).
A fresh set of AA batteries allows at least 1000 insulation tests at room temperature.