https://www.fluke.com/th-th/product/electrical-testing/insulation-testers/fluke-1587-i400-fc-kit
60.00 V dc 0.01 V ±(0.09% + 2)
600.0 V dc 0.1 V ±(0.09% + 2)
1000 V dc 1 V ±(0.09% + 2)
Input impedance 10 MΩ (nominal), <100 pF
Normal mode rejection ratio >60 dB @ 50 Hz or 60 Hz
Common mode rejection ratio >120 dB @ dc, 50 Hz or 60 Hz (1 k unbalance)
Accuracies apply to ± 100% of range
DC Millivolts Measurement
Range Resolution Accuracy ±(% of Rdg + Counts)
600.0 mVdc 0.1 mV ±(0.1% + 1)
DC and AC Current Measurement
AC 45 Hz to 1000 Hz
Range 400 mA
Resolution 0.1 mA
Accuracy ±(% of Rdg+Counts) ±(1.5% + 2)¹
Burden voltage (Typical) 2 mV/mA
Range 60 mA
Resolution 0.01 mA
Accuracy ±(% of Rdg+Counts) ±(1.5% + 2)¹
Burden voltage (Typical) 2 mV/mA
DC
Range 400 mA
Resolution 0.1 mA
Accuracy ±(% of Rdg+Counts) ±(0.2% + 2)
Burden voltage (Typical) 2 mV/mA
Range 60 mA
Resolution 0.01 mA
Accuracy ±(% of Rdg+Counts) ±(0.2% + 2)
Burden voltage (Typical) 2 mV/mA
Overload 600 mA for 2 minutes maximum
Fuse protection for mA input 0.44 mA, 1000 V, IR 10 kA
AC conversion Inputs are ac-coupled and calibrated to the rms value of sine wave input
Conversions are true-rms responding and specified from 5% to 100% of range. Input signal crest factor can be up to 3 up
to 300 mA, decreasing linearly to crest factor ≤1.5 at 600 mA. For non-sinusoidal waveforms add +(2% reading + 2% FS)
typical, for a crest factor up to 3.
¹ 1 kHz bandwidth