Test Equipment

Fluke 1550B MegOhmMeter

 Digital insulation testing up to 5000 volts

The Fluke 1550B is a digital insulation tester capable of testing switchgear, motors, generators and cables at up to 5000 V DC. It can be used for a wide range of tests: from simple spot checks to timed tests and breakdown tests. Measurement storage and PC interface software make it ideal for preventive maintenance. Heavy-duty leads, probes and alligator clips fit in the custom carrying case, for a rugged field testing kit.

General Features:

• Test voltages of 250V, 500 V, 1000 V, 2500 V, and 5000 V
• Capable of testing in 50V increments between 250V and 1000V and 100V increments between 1000V and 5000V
• Measures 0 to 1 Tera-Ohm
• Warning voltage function alerts the user that line voltage is present and gives the voltage reading up to 600 V AC or DC
• Guard system eliminates the effect of surface leakage current on high-resistance measurements
• Large digital/analog LCD shows detailed measurement data
• Cable or insulation capacitance
• Leakage current
• Ramp function (0-5000 V DC) for breakdown testing
• Timer 1 to 99 minutes
• Polarization index and dielectric absorption calculated automatically
• 99 memory locations store all measurements parameters
• Includes Quicklink 1550B Software and Optical Interface cable
• Two year warranty

Specifications

Test Voltage 250 V DC	Range: 200 kΩ to 5 GΩ Accuracy: 5% Range: 5 GΩ to 50 GΩ Accuracy: 20%
Test Voltage 500 V DC	Range: 200 kΩ to 10 GΩ Accuracy: 5% Range: 10 GΩ to 100 GΩ Accuracy: 20%
Test Voltage 1000 V DC	Range: 200 kΩ to 20 GΩ Accuracy: 5% Range: 20 GΩ to 200 GΩ Accuracy: 20
Test Voltage 2500 V DC	Range: 200 kΩ to 50 GΩ Accuracy: 5% Range: 50 GΩ to 500 GΩ Accuracy: 20%
Test Voltage 5000 V DC	Range: 200 kΩ to 100 GΩ Accuracy: 5% Range: 100 GΩ to 1 TΩ Accuracy: 20%
Short circuit current	> 1 mA and < 2 mA
Bar graph	Range: 0 to 1 TΩ
Insulation test voltage	Accuracy: 0% to 10% at 1 mA load current
Induced AC mains current rejection	Max: 2 mA
Charging rate for capacitive load	5 s/µF
Leakage current	Range: 1 nA to 2 mA Accuracy: ±(5% + 2 nA)
Capacitance measurements	Range: 0.01 µF to 15.00 µF Accuracy: ±(15% rdg + 0.03 µF)
Live circuit indicator	Range: 30 V to 600 V (AC/DC, 50/60 Hz) Accuracy: ±(5% + 2V)
Timer	1 - 99 minutes Settable: 1 minute increments Indication: 1 second resolution
Ramp	0% to 100% of selected test voltage, or until breakdown

Environmental Specifications

Safety Specifications

Mechanical & General Specifications

Size	170mm x 242mm x 330 mm (6.7" x 9.5" x 13.0")
Weight	4 kg (with battery) (8.8 lbs)
Batteries	12 V, lead-acid, rechargeable
Warranty	2 years
Battery Life	Test voltage: Number of tests 250 V: 4100 500 V: 3600 1000 V: 3200 2500 V: 2500 5000 V: 1500
Shock & Vibration	MIL-PRF-28800F, Class II
Charger input	AC: 85 to 250 V AC, 50/60 Hz, 50 VA

Safety Rating	EN 61010-1, CAT III 600V, EN61557, Parts 1 & 2
EMI immunity	EN 61326

Operating Temperature	-20°C to +50°C (-4°F to 122°F)
Storage Temperature	-20 °C to +65 °C (-4°F to 149°F)
Humidity (Without Condensation)	80% at 31 °C (87.8°F), 50% at 50 °C (122°F)
Dust/water resistance	IP-40
Operating Altitude	2,000 m