Insulation Measurement - AEMC 6526 User Manual

3.3.2 Insulation Measurement

Influencing
Parameter
Temperature
Relative humidity
Supply voltage
50/60Hz AC voltage
superposed on the
test voltage (V )
T
Capacitance in
parallel on resistance
to be measured
Common mode
rejection in AC
50/60 Hz
Megohmmeter Model 6526/6532/6534
1.800.561.8187
Range of Influence Quantity Influenced
3GΩ < R < 10GΩ
-20 to + 55°C
(-4 to 131°F)
Measurement current
20 to 80% RH
Measurement current
6.6 to 9.6V
0 to 5µF at 1mA
10V and 25V ranges
from 10kΩ to 1GΩ
50V, 100V and 250V
0 to 2µF
from 10kΩ to 3GΩ
500V and 1000V ranges
from 100kΩ to 10GΩ
50V range, ≤5GΩ
0 to 1µF 250V range, ≤15GΩ
1000V range, ≤100GΩ
0 to 600Vac
www.
MΩ
R ≤ 3GΩ
1% R/10°C + 1pt
10GΩ ≤ R
V : 50 to 500V
T
V : 1000V
T
1% R/10°C + 1 ct
MΩ 2% R + 1 ct
V : 50 to 1000V
T
MΩ
10V range
R ≤ 0.1GΩ : 10V
from 0.1 to 0.3GΩ : 0.2V
25V range
R ≤ 0.1GΩ : 10V
from 0.1 to 0.5GΩ : 0.2V
50V range
R ≤ 0.1GΩ : 4V
from 0.1 to 1GΩ : 0.2V
100V and 250V ranges
from 100kΩ to 10MΩ : 20V
from 10MΩ to 1GΩ : 0.3V
500V and 1000V ranges
from 500kΩ to 50MΩ : 20V
from 50MΩ to 3 GΩ : 0.3V
MΩ
2% R + 1 ct
ranges 6% R + 2 ct
6% R + 2 ct
6% R + 2 ct
V
.com
Influence
Typical Maximum
2% R/10°C + 2 ct
3% R/10°C + 2 ct
4% R/10°C + 2 ct
0.5% R/10°C + 1 ct
1% R/10°C + 1 ct
2% R/10°C + 2 ct
3% R + 2 ct
1% R + 2 ct
1% R + 2 ct
0.1% R + 2 ct
5% R + 2 ct
1% R + 1 ct
3% R + 2 ct
10% R + 2 ct
10% R + 2 ct
10% R + 2 ct
50dB 40dB
information@itm.com
33