Fluke 1537 Insulation Tester

Fluke 1537 Insulation Tester – Key Specifications

General

• Test voltages: 250 V, 500 V, 1000 V, 2500 V, with fine tuning in 100 V steps

• Insulation resistance range: up to 500 GΩ

• Short‑circuit current: up to 5 mA for stable, fast results

• Automatic calculations: Polarization Index (PI), Dielectric Absorption Ratio (DAR), and Dielectric Discharge Rate (DD)

• Measurement memory: Store up to ~1,300 tests at 2500 V (even more at lower voltages)

• AC/DC voltage, resistance, and continuity: supported only on 1537 model

• Continuity indication: both visual and audible

• Timer mode: programmable up to 99 minutes (alerts in seconds)

Electrical Safety & Standards

• Safety category: CAT IV 600 V

• Compliance: IEC 61010‑1, IEC 61557‑1/2, IEC 61010‑2‑030, IEC 61010‑2‑034, EMC IEC 61326‑1/2

• IP rating: IP40 for basic dust protection

Performance & Accuracy

• Insulation resistance accuracy: ±5% in most ranges; higher ranges (50–500 GΩ) ±20%

• Test voltage accuracy: –0% / +10% at 1 mA load current, ±3% +3 V typical

• Leakage current: 1 nA to 2 mA, ±(20% + 2 nA)

• Capacitance measurement: 0.01 µF to 2.00 µF at ±(15% reading + 0.03 µF)

Operating Conditions

• Display size: ~73.5 × 104 mm

• Power: 8 × AA alkaline batteries

• Weight: ~1.3 kg

• Dimensions: ~184 × 211 × 93 mm

• Operating temp: –10 °C to +50 °C; storage –20 °C to +60 °C

• Humidity: ≤80% RH at 10–30 °C; ≤50% at 30–50 °C

• Altitude: usable up to 2,000 m (storage up to 12,000 m)

📦 What’s Included (1537)

• Fluke 1537 insulation resistance tester

• Test leads with alligator clips (red, black, green)

• Straight probes (red, black)

• USB connection cable

• PC data‑management software

• Soft carrying case

• Capability to transfer and store test results