TESTBOY TV 450
Technical specification
61
9 Technical specifications
9.1 Insulation resistance
Insulation resistance (nominal voltages 50 V
DC
, 100 V
DC
and 250 V
DC
)
Measuring range according to EN61557 is 0.15 M
Ω
÷
199.9 M
Ω
.
Measuring range (M
Ω
) Resolution
(M
Ω
)
Accuracy
0.00
÷
19.99
0.01
±
(5 % of r 3 digits)
20.0
÷
99.9
±
(10 % of reading)
100.0
÷
199.9
0.1
±
(20 % of reading)
Insulation resistance (nominal voltages 500 V
DC
and 1000 V
DC
)
Measuring range according to EN61557 is 0.15 M
Ω
÷
1 G
Ω
.
Measuring range (M
Ω
) Resolution
(M
Ω
)
Accuracy
0.00
÷
19.99
0.01
±
(5 % of r 3 digits)
20.0
÷
199.9
0.1
±
(5 % of reading)
200
÷
999
1
±
(10 % of reading)
Voltage
Measuring range (V)
Resolution (V)
Accuracy
0
÷
1200
1
±
(3 % of r 3 digits)
Nominal voltages ...............................50 V
DC
, 100 V
DC
, 250 V
DC
, 500 V
DC
, 1000 V
DC
Open circuit voltage ...........................-0 % / +20 % of nominal voltage
Measuring current..............................min. 1 mA at R
N
=U
N
×
1 k
Ω
/V
Short circuit current........................... max. 3 mA
The number of possible tests............ > 1200, with a fully charged battery
Auto discharge after test.
Specified accuracy is valid if 3-wire test lead is used while it is valid up to 100 M
Ω
if tip
commander is used.
Specified accuracy is valid up to 100 M
Ω
if relative humidity > 85 %.
In case the instrument gets moistened, the results could be impaired. In such case, it is
recommended to dry the instrument and accessories for at least 24 hours.
The error in operating conditions could be at most the error for reference conditions
(specified in the manual for each function)
±
5 % of measured value.
