5
6
1.2 Features
1.3.1 Insulation Resistance Specifications
Rated
voltage
UT512D
measurement range
UT512E
measurement range
Accuracy
Over-range
indication
Short-circuit
current
1. Insulation resistance range up to 1.0TΩ (UT512D) and 2.5TΩ (UT512E)
2. Output rated voltage ranges including 250V, 500V, 1000V and 2500V
3. Short-circuit current: About 3.5mA (UT512D) and 5.0mA (UT512E)
4. Insulation resistance testing (IR)
5. AC/DC voltage testing (ACV, DCV)
6. Capacitance testing (CAP) (UT512E)
7. Low resistance testing ( R ) (UT512E)
8. With stepping set at 10% of rated voltage for each range.
9. Polarization Index (PI) and Dielectric Absorption Ratio (DAR)
10. Resistance comparison function (COMP) with upper and lower resistance
limit setting and over-range indication.
11. Timer testing mode
12. Automatic current display
13. External voltage detection function to monitor live voltage of measured object.
14. Timer function to record testing time automatically.
15. Automatic discharge and high voltage alarming functions.
16. Analog bar graph to display tested insulation resistance
17. Manual and automatic power off functions
18. The ability to delete and store 999 groups of testing data.
19. Data upload function to enable uploading data to computer via USB cable for
data analysis.
20. LCD-backlit function
21. 5.1-inch LCD display
22. 14.8V/5200mAh rechargeable lithium battery pack (UT512E); 8 PCS LR14
alkaline batteries (UT512D)
Error limit: ± (a% of r b digits), one-year warranty
Environment temperature: 23±5
℃
Environment humidity: 45~75%RH, In the table below: The humidity must be less
than 50%RH when testing insulation objects with a resistance greater than 50GΩ
in the parameters.
Temperature coefficient: Test outside the temperature range of the indicator (i.e.
above 28 degrees or below 18 degrees), with an additional testing error of+/-0.25%
for each degree Celsius.
1.3 Technical Specifications
250V
500V
1000V
2500V
>
<
0.25MΩ
0.25MΩ～4.99GΩ
5.00GΩ～24.9GΩ
25.0GΩ～100GΩ
<0.50MΩ
0.50MΩ～9.99GΩ
10.0GΩ～49.9GΩ
50.0GΩ～200GΩ
<1.00MΩ
1.00MΩ～19.9GΩ
20.0GΩ～99.9GΩ
100GΩ～400GΩ
<2.50MΩ
2.50MΩ～49.9GΩ
50.0GΩ～249GΩ
250GΩ～1.00TΩ
<0.25MΩ
0.25MΩ～4.99GΩ
5.00GΩ～49.9GΩ
50.0GΩ～250GΩ
<0.50MΩ
0.50MΩ～9.99GΩ
10.0GΩ～99.9GΩ
100GΩ～500GΩ
<1.00MΩ
1.00MΩ～19.9GΩ
20.0GΩ～199GΩ
200GΩ～1.00TΩ
<2.50MΩ
2.50MΩ～49.9GΩ
50.0GΩ～499GΩ
500GΩ～2.50TΩ
±(
5%+5)
±(20%+10)
±(
5%+5)
±(20%+10)
±(
5%+5)
±(20%+10)
±(
5%+5)
±(20%+10)
For reference only
For reference only
For reference only
For reference only
For reference only
For reference only
For reference only
For reference only
UT512D:
About 3.5mA
UT512E:
About 5.0mA
current
with load:
1mA~1.2mA
(250V,
0.25MΩ;
500V,
0.5MΩ;
1000V,
1.0MΩ;
2500V,
2.5MΩ;
1 TΩ (Tera ohm) =1000GΩ=10¹²Ω
1 GΩ (Giga ohm) =1000MΩ=10⁹Ω
1 MΩ (Mega ohm) =1000KΩ=10⁶Ω
Note: For insulation resistance measurement, if the measured capacitive reactance
is greater than about 100nF, it may cause reading to fluctuate significantly.
"Overrange warning: For example, in the 1000V voltage output range of UT512D,
if the range is exceeded, it will display >400GΩ.".
UT512D/E User Manual
UT512D/E User Manual
