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The new Fluke 1555 and redesigned Fluke 1550C insulation resistance testers, offer digital insulation testing up to 10kV, making them ideal for testing a wide range of high voltage equipment including switchgear, motors, generators and cables. Fluke insulation resistance testerscan now conduct the entire range of test voltages specified in IEEE 43-2000 with a best in class, 3 year warranty and CAT IV 600 V safety rating. With measurement storage and PC interface, the 1555 and 1550C are perfect tools for preventative or predictive maintenance programs designed to identify potential equipment failures before they occur.
Insulation resistance measurement - Fluke 1550C and Fluke 1555 | ||
Test voltage (dc) | Range (dc) | Accuracy (± reading) |
250 V | < 200 kΩ 200 kΩ to 5 GΩ 5 GΩ to 50 GΩ > 50 GΩ | unspecified 5 % 20 % unspecified |
500 V | 200 kΩ 200 kΩ to 10 GΩ 10 GΩ to 100 GΩ > 100 GΩ | unspecified 5 % 20 % unspecified |
1000 V | < 200 kΩ 200 kΩ to 20 GΩ 20 GΩ to 200 GΩ > 200 GΩ | unspecified 5 % 20 % unspecified |
2500 V | < 200 kΩ 200 kΩ to 50 GΩ 50 GΩ to 500 GΩ > 500 GΩ | unspecified 5 % 20 % unspecified |
5000 V | < 200 kΩ 200 kΩ to 100 GΩ 100 GΩ to 1 TΩ > 1 TΩ | unspecified 5 % 20 % unspecified |
10000 V (Model 1555 only) | < 200 kΩ 200 kΩ to 200 GΩ 10 GΩ to 2 TΩ > 2 TΩ | unspecified 5 % 20 % unspecified |
Bar graph range | 0 to 1 TΩ | |
Insulation test voltage accuracy | -0 %, +10 % at 1 mA load current | |
Induced ac mains current rejection | 2 mA maximum | |
Charging rate for capacitive load | 5 seconds per μF | |
Discharge rate for capacitive load | 1.5 s/μF | |
Leakage current measurement | Range: 1 nA to 2 mA | Accuracy: ± (5 % + 2 nA) |
Capacitance measurement | Range: 0.01 uF to 15.00 μF | Accuracy: ± (15 % rdg + 0.03 μF) |
Timer | Range: 0 to 99 minutes | Resolution Accuracy: |
Live circuit warning | Warning Range: | Voltage Accuracy: |
General specifications | |
Display | 75 mm x 105 mm |
Power | 12 V lead-acid rechargeable battery, Yuasa NP2.8-12 |
Charger Input (AC) | Charger Input (AC) 85 V to 250 V ac 50/60 HZ 20 VA |
This Class II (double insulated) instrument is supplied with a Class 1 (grounded) power cord. The protective earth terminal (ground pin) is not connected internally. The extra pin is for added plug retention only. | |
Dimensions | 170 mm x 242 mm x 330 mm (6.7 in x 9.5 in x 13 in) |
Weight | 3.6 kg (7.94 lb) |
Temperature (operating) | -20 ºC to 50 ºC (-4 ºF to 122 ºF) |
Temperature (storage) | -20 ºC to 65 ºC (-4 ºF to 149 ºF) |
Humidity | 80 % to 31 ºC decreasing linearly to 50 % at 50 ºC |
Altitude | 2000 m |
Enclosure sealing | IP40 |
Input overload protection | 1000 V ac |
Electromagnetic compatibility | EN 61326 |
Certifications | |
Safety compliance | CAT III 1000 V, CAT IV 600 V |
Pollution degree | 2 |
The tester’s accuracy is specified for one year after calibration at operating temperatures of 0 °C to 35 °C. For operating temperatures outside the range (-20 °C to 0 °C and 35 °C to 50 °C), add ± .25 % per °C, except on the 20 % bands add ± 1 % per °C.
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