UNI-T UT255A Operating Manual page 8

To measure line voltage below 60kV operate with
Line Voltage
insulation rod
Press HOLD button to hold data under general
Data Hold measuring mode, indicated by
repress to cancel the operation.
Indicated by
Data Access
to read out data
Overload Display Out of-range display: indicated by OL A icon
Dynamic display of no- - icon when receiving no
* Display for no signal
signal
15 minutes later after power on, to conserve power
Auto Power Off
energy
Low battery icon
Battery Voltage
than 4.8V, please timely change the battery
12
HOLD icon, then
MR icon able to scroll up or down
displays with voltage lower
Tester 335g battery included ; total weight
Weight
2.5Kg insulation rod and battery included
Operating
-20 40 ;
Temperature /Humidity
Storage
-20 60 ;
Temperature/ Humidity
No 315MHz, 433MHz shared frequency interference
*Interference
32mm, 1m per piece 5PCS
Insulation Rod
Insulation strength between fifth insulation rod and
Insulation Strength tester housing: AC 100kV/rms; between tester
housing and iron core: AC1000V/rms
Leakage resistance
Structure
80%Rh
70%Rh
type
13