17
18
Electrical Specifications
Accuracy is ±(% r number of digits) at 23°C ±5°C < 80%RH.
Voltage Measurement
Function
Range
Accuracy
DCV
600.0V
±1%+5dgt
ACV
600.0V
±(1.5%+5dgt)(50~60Hz)
±(2%+5dgt)(61~500Hz)
LPF ACV
600.0V
±(1.5%+5dgt)(50~60Hz)
±(5%+5dgt)(61~400Hz)
Initial Voltage:
≥
AC 0.6V.
Over voltage protection:
600 V AC RMS/DC.
The cut-off frequency of the low pass filter:
1 kHz.
Input Impedance:
3M
Ω
// less than 100pF.
CMRR / NMRR: (Common Mode Rejection Ratio)
(Normal Mode Rejection Ratio)
V
AC
:
CMRR > 60dB at DC, 50Hz / 60Hz
V
DC
:
CMRR > 100dB at DC, 50Hz / 60Hz
NMRR > 50dB at DC, 50Hz / 60Hz
AC Conversion Type:
AC conversions are ac-coupled, true rms
responding, calibrated to the sine wave input.
For non-sine wave add the following Crest Factor corrections:
For Crest Factor of 1.4 to 2.0, add 1.0% to accuracy.
For Crest Factor of 2.0 to 2.5, add 2.5% to accuracy.
For Crest Factor of 2.5 to 3.0, add 4.0% to accuracy.
CF 3 @ 330V, 2 @ 500V
Earth-bond resistance Measurement
Function
Range
Accuracy
Earth-Bond
Resistance
40.00
Ω
±(1.5%+5dgt)*
400.0
Ω
±(1.5%+3dgt)
4000
Ω
40.00k
Ω
*<1.00
Ω
add 3dgt
Open Circuit Test Voltage : > 4.0V,<8V, Short Circuit Current : > 200.0mA
Live Circuit Detection: if > 2V ac/dc at inputs, test inhibited.
Insulation resistance Measurement
Function
Range
Accuracy
Insulation
Resistance
4.000M
Ω
40.00M
Ω
±(1.5%+5dgt)
400.0M
Ω
4000M
Ω
±(3%+5dgt)
4.1G
Ω ~
20.0G
Ω
±(10%+3dgt)
Test Voltage vs. Maximum resistance range:
50V/50.0M
Ω
, 100V/100.0M
Ω
, 250V/250.0M
Ω
, 500V/500M
Ω
, and
1000V/20.0G
Ω
.
Test Voltage vs. Minimum resistance (with test current=1mA):
50V/50k
Ω
, 100V/100k
Ω
, 250V/250k
Ω
, 500V/500k
Ω
and
1000V/1M
Ω
.
Test Voltage Accuracy:
-0%,+20%
Short Circuit Test Current:
1mA(nominal)
Auto discharge function:
discharge time <1 sec for C <1μF
Maximum Capacitive load:
Operable with up to 1μF load
Live Circuit Detection:
if >30V ac/dc at inputs, test inhibited
