7
8
1.3.2 Current Specifications
UT512D
±
(
10%+5
)
）
0.01nA～3.50mA
UT512E
0.01nA～5.00mA
0.01nA
0.01µA
0.01mA
Model
Measurement accuracy Display accuracy
Range
Remark
Test stops
automatically if
current remains
at ≥1.00mA for 10s
1.3.3 Output Voltage Specifications
250V
+
(
0%
~
20
)
）
%
250V
～
300V
1V
500V
1000V
2500V
500V
～
600V
1000V
～
1200V
2500V
～
3000V
Rated voltage
Output accuracy
Display accuracy
Output voltage
Remark
Voltage adjustment
range with step set
at 10%:
(50%～120%)
250V cannot step
down and 2500V
cannot step up.
1.3.4 Voltage Testing Specifications
30
～
1000VDC
1V
±(3%+5）
1V
±(3%+5）
30
～
750VAC
OL
OL
Voltage
measurement
Measurement
range
Accuracy
Resolution
Over-range
indication
Remark
1. Input impedance:
200MΩ
2. Frequency:
50Hz/60Hz
DC voltage
AC voltage
Note: LO is displayed if the input voltage is less than about 25V; the reading flashes if the input
voltage is between about 750VAC~824VAC or 1000VDC~1099VDC; “OL” is displayed with buzzer
making sound and LCD flashing if the input voltage is greater than about 1100VDC or about 825VAC.
0.01uF~2.00uF
±（15%+3）
0.1Ω～600Ω
±（2%+10）
1.3.5 Capacitance Testing Specifications (UT512E)
Function
Measurement range
Accuracy
Remark
Capacitance
measurement
Note the withstand voltage of
capacitance (≤1000V)
Note: Rated voltages for capacitance measurement include 250V, 500V, and 1000V. LO is displayed
if measured capacitance is < 0.01uF; OL is displayed if measured capacitance is >2.20uF. If capacitance
over 2.2uF is measured when the battery power indicator shows one “segment” of lower left, the tester
may enable battery protection, in such case, please charge the tester to activate the battery.
1.3.6 Low Resistance Testing Specifications (UT512E)
Function
Measurement range
Accuracy
Remark
Low resistance
measurement
Open-circuit voltage: 5V
Note: If the measured resistance is ≤20Ω, the buzzer alarms; if >660Ω, “>660Ω” is displayed.
The short-circuit current is >200mA.
1.3.7 Common Specifications
14.8V/5200mAh rechargeable lithium battery (UT512E);
8 PCS LR14 alkaline batteries (UT512D)
250V, 500V, 1000V, 2500V
+ (0% 20%)
~
UT512D 0.25MΩ~1.00TΩ; UT512E：0.25MΩ~2.50TΩ
:
UT512D: About 3.5mA (10s); UT512E: About 5.0mA (10s)
√ (default mode)
√ (automatic display)
√ (automatic display)
√
√
DC 30V~1000V; Accuracy: ±(3%+5)
AC 30V~750V; Accuracy: ±(3%+5)
Range: 0.01uF~2.00uF; Accuracy: ±(15%+3)
Range: 0.1Ω~600Ω; Accuracy: ±(2%+10)
Current is displayed when measuring insulation resistance.
10% of the range. Range: 50%~120%
Record testing time automatically.
Timing range: 0s～99m and 59s.
The danger warning symbol flashes
if safety voltage is exceeded.
Store 999 groups of data
Upload testing data to computer (one-way) via USB cable.
Indicate charging or replacing battery when low battery occurs.
Power off automatically 15 minutes after the tester powers
on(without occurrence of high voltage and operation).
Monitor the voltage of measured object and the discharge
state after testing. If voltage is higher than 36V, it is forbidden
to test for protecting the tester and the operator.
Power supply
Rated voltage
Output voltage accuracy
Insulation resistance range
Output short-circuit current
Continuous insulation
resistance measurement
Polarization index testing
Absorption ratio testing
Timing measurement
Resistance comparison
measurement
Voltage testing
Capacitance testing (UT512E)
Low resistance testing (UT512E)
Current display
Voltage stepping
Monitoring live voltage of
external measured object
Timer testing
High voltage alarm
Storage function
Communication function
Battery power indication
Auto power off
UT512D/E User Manual
UT512D/E User Manual
