HT Instruments HT77C Manuel D'utilisation page 29

7. TECHNICAL SPECIFICATIONS
7.1. TECHNICAL CHARACTERISTICS
Accuracy indicated as [%reading + (digit number*resolution)] at 23°C±5°C, <80%RH
AC TRMS Current
Range Resolution
6mA (*) 0.001mA
60mA 0.01mA
600mA 0.1mA
6A 0.001A
60A 0.01A
(*) Minimum reading 10µA ; (**) Frequency response: 15Hz÷50Hz;. For frequency <30Hz add 3%rdg
(***) Frequency response: 60Hz÷10kHz. For frequency >1kHz add 0.5%rdg to the accuracy
Accuracy declared for sinusoidal waveform; Overload protection 60Arms;
Error due of position cable not in centre of jaws: 1%rdg
Additional error due to the Crest Factor (CF) of non-sinusoidal signals:
C.F: 1.0  2.0 → Add 1.0%rdg
C.F: 2.0  2.5 → Add 2.5%rdg
C.F: 2.5  3.0 → Add 4.0%rdg
Max. Crest Factor:
3.0 @ up to 3000dgt ; 2.0 @ 3000  4500dgt; 1.5 @ 4500  6000dgt
AC TRMS Current with 50-60Hz low-pass filter
Range Resolution
6mA (*) 0.001mA
60mA 0.01mA
600mA 0.1mA
6A 0.001A
60A 0.01A
(*) Minimum reading 10µA ; (**) Frequency response: 15Hz÷50Hz;. For frequency <30Hz add 3%rdg
Error due of position cable not in centre of jaws: 1%rdg
Cutting frequency: approx. 200Hz
Overload protection 60Arms
AC TRMS Current with 1kHz low-pass filter
Range Resolution
6mA (*) 0.001mA
60mA 0.01mA
600mA 0.1mA
6A 0.001A
60A 0.01A
(*) Minimum reading 10µA ; (**) Frequency response: 15Hz÷50Hz;. For frequency <30Hz add 3%rdg
Error due of position cable not in centre of jaws: 1%rdg
Cutting frequency: approx. 1kHz
Overload protection 60Arms
Accuracy
(30Hz  50Hz)
 (2.0%rdg+ 5dgt) (**)
 (2.0%rdg+ 5dgt)
Accuracy
(30Hz  50Hz)
 (2.0%rdg+5dgt) (**)
 (2.0%rdg+5dgt)
Accuracy
(30Hz  50Hz)
 (2.0%rdg+5dgt) (**)
 (2.0%rdg+5dgt)
EN - 11
Accuracy
(51  60Hz)
 (1.0%rdg.+ 5dgt)
 (1.0%rdg+5dgt)
Accuracy
(51  60Hz)
 (1.0%rdg+5dgt)
HT77C
Accuracy
(61Hz  1kHz)
 (2.0%rdg+5dgt) (***)
 (2.0%rdg+5dgt)
Accuracy
(51  60Hz)
Accuracy
(61  1kHz)
 (2.5%rdg+5dgt)