Electrical Specifications - SEFRAM 7307 User Manual

Electrical Specifications

Accuracy is ±(% reading + number of digits) at
23°C ± 5°C < 80%RH.
DC / AC Volts
Range
200.0mV *
2.000V *
20.00V ~ 200.0V *
750V AC / 1000V DC
DC Accuracy :
±(0.5% + 2dgt)
Over voltage protection :
1000V DC or 750 V ACrms.
Input Impedance : 10MΩ // less than 100pF.
* CMRR / NMRR :
(Common Mode Rejection Ratio)
(Normal Mode Rejection Ratio)
V : CMRR > 60dB at DC, 50Hz / 60Hz
AC
V : CMRR > 100dB at DC, 50Hz / 60Hz
DC
NMRR > 50dB at DC, 50Hz / 60Hz
AC Conversion Type :
Average sensing rms indication.
AC conversions are ac-coupled, true rms
responding, calibrated to the sine wave input.
* The minimum LCD reading is 1400 count in
Auto Ranging Mode.
Crest Factor : C.F. = Peak / Rms
+ 1.5% addition error for C.F. from 1.4 to 3
+ 3% addition error for C.F. from 3 to 4
DC / AC Current (For 7308/7309 only)
Range DC Accuracy
2.000A
±(1.0% + 3 dgt)
10.00A **
Voltage Burden : 2V max.
22
AC Accuracy
Unspecified
± (1.5%+5dgt)
50Hz ~ 300Hz
±(1.5%+5dgt)
50Hz ~ 500Hz *
AC Accuracy
±(1.5% + 5 dgt)
50Hz ~ 500Hz *