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1662/1663/1664 FC
Users Manual
80
Electrical Measurement Specifications
The accuracy specification is defined as ±(% reading +digit counts) at 23 °C ±5 °C, ≤80 %
RH. Between -10 °C and 18 °C and between 28 °C and 40 °C, accuracy specifications
may degrade by 0.1 x (accuracy specification) per °C. The calibration cycle is 1 year.
AC Voltage Measurement (V)
Range Resolution
Accuracy
45 Hz – 66 Hz
Input Impedance
Overload
Protection
500 V 0.1 V 0.8 % + 3
320 kΩ
550 V rms
Insulation Resistance Measurement (R
ISO
)
Test Voltages Accuracy of Test
Voltage
(at rated test
current)
Model 1662
Model 1663
Model 1664
100-250-500-1000 V 50-100-250-500-1000 V +10 %, -0 %
Test
Voltage
Insulation
Resistance Range
Resolution Test Current Accuracy
50 V
10 kΩ to 50 MΩ 0.01 MΩ 1 mA @ 50 kΩ ±(3 % + 3 digits)
100 V
100 kΩ to 20 MΩ 0.01 MΩ
1 mA @ 100 kΩ
±(3 % + 3 digits)
20 MΩ to 100 MΩ 0.1 MΩ ±(3 % + 3 digits)
250 V
10 kΩ to 20 MΩ 0.01 MΩ
1 mA @ 250 kΩ
±(1.5 % + 3 digits)
20 MΩ to 200 MΩ 0.1 MΩ ±(1.5 % + 3 digits)
500 V
10 kΩ to 20 MΩ 0.01 MΩ
1 mA @ 500 kΩ
±(1.5 % + 3 digits)
20 MΩ to 200 MΩ 0.1 MΩ ±(1.5 % + 3 digits)
200 MΩ to 500 MΩ 1 MΩ ±10 %
1000 V
100 kΩ to 200 MΩ 0.1 MΩ
1 mA @ 1 MΩ
±(1.5 % + 3 digits)
200 MΩ to 1000 MΩ 1 MΩ ±10 %
Note: The number of insulation tests with a new set of batteries is >2000.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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