Fluke 1555 and 1550C Insulation Resistance Testers

Fluke ElectricalTester

Evaluate the trends, eliminate the doubt

     The Fluke 1555 and Fluke 1550C insulation resistance testers, offer digital insulation testing up to 10 kV, making them ideal for testing a wide range of high voltage equipment including switchgear, motors, generators and cables.

     Fluke insulation testers can 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

Description

Features include:
     • Test voltages to up 10 kV provides solutions for all applications

     • CAT III 1000 V, CAT IV 600 V safety rating

     • Warning function alerts the user that line voltage is present and gives the voltage reading up to 600 V ac or dc for increased user safety

     • Selectable test voltages in 50 V steps from 250 V to 1000 V, and 100 V steps above 1000 V

     • Measurements can be stored in up to 99 memory locations, with each location assigned a unique, user defined, label for easy recall

     • Long battery life gives the user over 750 tests between charges

     • Automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI) with no additional setup

     • Guard system eliminates the effect of surface leakage current on high-resistance measurement

     • Large digital/analog LCD for easy viewing

     • Capacitance and leakage current measurement

     • Ramp function for breakdown testing

     • Resistance measurements up to 2 TΩ

     • Timer settings up to 99 minutes for timed tests

     • 3-year warrant

     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.

Insulation resistance measurement

Test voltage (dc) Range Accuracy (± reading)
250 V < 250 kΩ
250 kΩ to 5 GΩ
5 GΩ to 50 GΩ
> 50 GΩ
unspecified
5 %
20 %
unspecified
500 V < 500 kΩ
500 kΩ to 10 GΩ
10 GΩ to 100 GΩ
> 100 GΩ
unspecified
5 %
20 %
unspecified
1000 V < 1 MΩ
1 MΩ to 20 GΩ
20 GΩ to 200 GΩ
> 200 GΩ
unspecified
5 %
20 %
unspecified
2500 V < 2.5 MΩ
2.5 MΩ to 50 GΩ
50 GΩ to 500 GΩ
> 500 GΩ
unspecified
5 %
20 %
unspecified
5000 V < 5 MΩ
5 MΩ to 100 GΩ
100 GΩ to 1 TΩ
> 1 TΩ
unspecified
5 %
20 %
unspecified
10000 V (1555 Only) < 10 MΩ
10 MΩ to 200 GΩ
200 GΩ to 2 TΩ
> 2 TΩ
unspecified
5 %
20 %
unspecified

 

Bar graph range 0 to 1 TΩ (1550C) – 0 to 2 TΩ (1555)
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

 

Range Accuracy
Leakage current
measurement
1 nA to 2 mA ± (5 % + 2 nA)
Capacitance measurement 0.01 uF to 15.00 μF ± (15 % rdg + 0.03 μF)

 

Timer Range Resolution
0 to 99 minutes Setting: 1 minute
Indication: 1 second

 

Live circuit warning Warning range Voltage accuracy
30 V to 660 V ac/dc, 50/60 Hz ± (15 % + 2 V)

 

General specifications

(RF connection time (binding time) can take up to 1 minute.)

Display 75 mm x 105 mm
Power 12 V lead-acid rechargeable battery, Yuasa NP2.8-12
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 269 mm x 277 mm x 160 mm (10.6 in x 10.9 in x 6.3 in)
Weight 3.7 kg (8.2 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 IEC 61010-1: Overvoltage categroy II, pollution degree 2.
IEC 61010-2-030: Measurement 600V CAT IIV / 1000V CAT III
IEC 61557-1, IEC 61557-2

 

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