Unit UT581 User manual

1. Safety Instructions
This operation manual includes the user guidance and safety instru
-ction when using the tester, please read it before using.
Caution
● Before using the tester, please read and understand the operating
manual.
● Keep the operating manual properly, and let it easy to get it for
reference during the process of testing.
● When using the tester, user must follow the testing procedure as
mentioned in the operating manual.
● Carefully read the operating manual regarding the safety information.
● Strictly follow all the related safety instructions, otherwise it may
cause accidents or damage the tester.
Safety sign “ ” has three meaning in this manual, user has to pay
the attention to this sign “ ” for operation.
Danger-----identifies conditions and actions that most likely
pose severe or fatal hazard(s)．
Warning---identifies conditions and actions that may pose
severe or fatal hazard(s)
Caution---identifies conditions and actions that may cause
minor injury or damage to the Tester.
Danger
● This test instrument is suitable for using under single phase
230V+10%-15%.(Operational Voltage Scope: 195 – 253 V)
● To avoid possible electric shock or personal inquiry, do not use
the test t instrument or test leads if they appear damaged or metal
part is exposed, or if test instrument is not operating properly.
If in doubt, please have the instrument serviced.
● Do not use your finger to touch on any testing cable during the
testing ..
● Remove the test leads away from the power after the testing
completes. Do not keep the test leads connected to the power
for a long time after the testing
Warning
● Do not open or disassemble the tester randomly during the
measurement, for the high voltage present into the unit may
endanger the user. If it needs service repairing, please contact
our after-sales services or our agents.
● If the test instrument appear abnormal ( for example, no completed
display, incorrect calculation, housing damage, noise issue during
the measurement etc….). please contact our after-sales services
or our agents.
● Do not use the tester if your hands are in wet.
Caution
● Ensure the test lead probe (use only the specified test leads from
UNI-T) insert into the corresponding port in order to provide a safe
before measurement. It is recommended not to use third arties
test plead probe on our tester.
● Do not expose the tester in extreme temperature and wet environment.
● Soft cloth and mild detergent should be used to clean the surface of
he tester. No abrasive and solvent should be used when servicing.
● Dry the tester before storing if it is wet.
This Tester has the follow signs,please pay attention to the content
when using
danger, warning, caution
double or reinforced insulation
Grounding
CE conforms to Standards of European Union
2. Features
● Suitable for Use on 230V/50Hz single-phase line (operating
voltage: 195~253V);
● Adopts Micro-Processor Chip to maintain high accuracy, reliability
and stability;
● Wiring Check: three –LED indication
When P-E and P-N green LED are on and red LED is off, the
wiring is correct; otherwise it indicates wrong wiring(reverse P
and N or bad grounding);
● Phase Angle Selection: The tests can be performed at positive
0 or negative 180 phase angle.
● Over-Load Indication: “OL mS” shows when trip time exceeds
Max. test time
● Auto Data Hold: The test results will be maintained for a while after
the tests finishes.
3. Technical Specifications
3.1 Measuring Range & Accuracy. (Temperature: 23±5℃; Humidity:
45%~75% RH; Altitude ≤2000m)
UT581:
Functions Voltage(AC) Trip Current(
I△n)Trip Time
(MAX)
Accuracy
Trip Current Trip Time
X 1/2
X 1
X 5
250mA
(Fast
Trip)
230V
(Tolerance:
-15%~+10%)
Frequency:
50Hz
250mA(Fixed)
10 / 20 / 30mA
500mA
10 / 20 / 30 /100 /
300 mA
10 / 20 / 30 /100 /
300 / 500mA 1000mS
1000mS
300mS
1000mS
40 mS
Tolerance:
-10%~0%
Tolerance:
0%~+ 10%
Tolerance:
0%~+ 10%
±0.6% rdg
±4dgt
UT582:
Functions Voltage(AC) Trip Current(
I△n)Trip Time
(MAX)
Accuracy
Trip Current Trip Time
X 1/2
X 1
X 5
AUTO
RAMP
TEST
230V
(Tolerance:
-15%~+10%)
Frequency:
50Hz
10 / 20 / 30 /100
/ 300 / 500mA
10 / 20 / 30mA
500mA
10 / 20 / 30 /100 /
300 mA
10 / 20 / 30 /100 /
300 / 500mA 1000mS
1000mS
300mS
(RAMP
increase to
10%) I△nfrom
20%~110%
300*10 mS
1000mS
Tolerance:
-10%~0%
Tolerance:
0%~+ 10%
Tolerance:
-10%~+10%
±0.6% rdg
±4dgt
3.2 Measuring Range (Functions)
×1/2--------------------Non-trip test, check RCD sensitivity
×1----------------------Measure trip time
×5----------------------Measure fast trip time at I△n×5 trip current
250mA----------------Measure trip time(for UT581only, Max. test
time up to 40ms)
AUTO RAMP Test---- Measure trip current(for UT582 only)
3.3 Application Standard:
IEC 61010-1 CAT III 300V, Pollution Degree 2.
IEC 61557-1,5
IEC 61010-2-31
● Auto Ramp Test: Test trip current and trip time simultaneously
(for UT582 only);
● Power-Off Warning Indication: The buzzer alarms after operating
for 3minutes;
● Power Save and Environment-Friendly: Powered directly by
tested circuit (Power 230V/50Hz) , no need to use battery;
● Fused Protection
● Double or Reinforced Insulation for safe design.
● Fixed 250mA Fast Trip(Max.:40ms)(for UT581 only);

P/N:110401104493X
3.4 Operational Voltage: 230VAC/50Hz (Voltage Range:
195 – 253 V)
3.5 Working Environment: Temperature: 0℃~40℃
Relative Humidity: ≤80%RH
Altitude: ≤2000 meter
3.6 Storage Condition:
Temperature: -20℃~60℃
Relative Humidity: ≤75%RH
3.7 Product Size: 160mmx70.5mmx100mm
3.8 Product Net Weight: About 500g
3.9 Standard Accessories:
Test Leads(1.5 meter) 1 pc
English Mnaual
1 pc
Carrying Case 1 set
4. Tester Description (See Figure 1, 2)
Figure 1
Figure 2
① LCD Display
② PHASE Button
③ I△nButton
④ TEST Button
⑤ Wiring LED Indicators
⑥ Rotary Switch
⑦ Test Terminals
⑧ Test Leads
Red (Live)
Green ( Earth )
Blue ( Neutral )
5. Making Measurements
6. Maintenance & Repair
This operating manual is subject to change without notice.
** END **
(1) Test Lead Connections
Insert three connectors of test leads respectively into three termi
-nals of the Tester: Red to L, Green to E, Blue to N, and then
connect another end of test leads to tested circuit (power socket
230V/50Hz).
Danger
● Do not touch any exposed metal or conductor during these
test operations.
● Relative components in the Tester may get hot during the
operation, if the Tester continues to work for a long time, it
may cause damage to the unit or other hazards. Therefore
the Tester is recommended not to use for a long-time and
continuous tests on production lines in RCD factories .It is
only suitable for sampling precision tests.
● The time interval between each test with trip current 300mA
/500mA(large current trip test) should be ensured up to 5
minutes.
6.1 Cleaning the Casing:
Clean the surface of the Tester with dry soft cloth; No alcoholic and
solvent is allowed, for it may cause corrosive damage to the LCD;
Protect the Tester from any moisture.
6.2 Repair
Please contact our after-sale service center or agents if following
issues happen:
A. The Tester casing is broken or the components are damaged;
B. LCD display works abnormally;
C. Unexpected data occur under normal use;
D. The buttons don’t function normally;
E. Noise happen during tests.
(4) Taking RCD Tests
4.1 Set the rotary switch to test parameters
● Non-Tripping -------------------×1/2: Max. trip time up to 1000ms;
● Tripping -------------------------×1: Max. trip time up to 1000ms (Except
500mA);
● Tripping -------------------------×1(500mA): Max. trip time up to 300ms ;
● Fast Tripping------------------- ×5( only 10, 20, 30mA ): Max. trip time
up to 1000ms;
● Fast Tripping--------------------250mA: Max. trip time up to 40ms (for
UT581 only);
● AUTO RAMP Test: for UT582 only, 20%~110% of rated trip current
(I△n), Max. trip time up to 300ms.
4.2 Press TEST button
● Non-Tripping Test -------The RCD should not trip.
● Tripping --------------------The RCD should trip.
● ×5 Fast Tripping: ----------- The RCD should trip.
● 250mA Fast Tripping: -------The RCD should trip (for UT581 only).
● AUTO Ramp Test: ---------- The RCD should trip, and trip time and
trip current are displayed simultaneously (for UT582 only).
4.3 Press PHASE (0 /180 ) button to set the phase angle and repeat
4.2 to determine the fastest trip time.
4.4 Press to change the phase angle and repeat 4.2
4.5 When the tests finish, disconnect the test lead from the tested
circuit immediately.
(2) Wiring Check
Check the wiring status by identifying three LEDs. If P-E and P-N
green LEDs are on and red LED is off, it indicates the wiring is
correct, otherwise wiring is wrong due to reverse connection
between L and N terminals or bad grounding. Please unplug the
test leads, check and correct the relative circuits until right wiring
indication is obtained.
(3) Press I△n button to adjust the trip current(I△n) the same as the
rated trip current marked on RCD. The set trip current will show
on lower part of LCD.
Default value: I△n----------------- 30mA
0 /180 ----------- 0
Caution: Reverse connection between L and N terminals during
wiring check may cause RCD to trip, so please check and correct
the circuits until the wiring indication is obtained and before you
proceed into next operation.
Danger
Do not proceed into next operation (press TEST button) if the
wiring is incorrect, otherwise it may cause error to the result or
other hazards.