Unit UT233 User manual

Model UT233
OPERATING MANUAL

Model UT233: OPERATING MANUAL
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TABLE OF CONTENTS
TITLE PAGE
Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
A. The Meter Front Structure
B. The Meter Back and Bottom Structure
Functional Buttons
Display Symbols
Measurement Operation
A. Active power + AC Voltage + AC Current Measurement
B. Apparent Power + AC Voltage + AC Current Measurement
C. Reactive Power + AC Voltage + AC Current Measurement
D. Power Factor cos + AC Voltage + AC Current Measurement
E. Phase Angle + AC Voltage +AC Current Measurement
F. Frequency Hz + AC Voltage + AC Current Measurement
G. Active Energy + Active Power + Time Measurement
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Model UT233: OPERATING MANUAL
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TABLE OF CONTENTS
TITLE PAGE
H. Phase Sequence
Specifications
A. General Specifications
B. Environmental Requirements
Accuracy Specifications
A. AC Voltage (True RMS)
B. Frequency
C. AC Current (True RMS)
D. Active Power
E. Apparent Power
F. Reactive Power
G. Power Factor
H. Phase Angle
I. Active Energy
Maintenance
A. General Service
B. Replacing the Battery

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Model UT233: OPERATING MANUAL
This Operating Manual covers information on safety
and cautions. Please read the relevant information
carefully and observe all the Warnings and Notes
strictly.
Warning
To avoid electric shock or personal injury, read the
ìSafety Informationî and ìRules for Safe Operationî
carefully before using the Meter.
Model UT233 is a digital power clamp meter (hereafter
referred to as ìthe Meterî) is a handheld intelligent
power meter which has both the features of digital
current meter and also power measurement meter.
The Meter can measure Voltage, Current,Active Power,
Apparent Power, Reactive Power, Power Factor, Phase
Angle, Frequency,Active Energy and Phase Sequence.
Open the package case and take out the Meter. Check
the following items carefully to see any missing or
damaged part:
Item
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Description
English Operating Manual
Test Lead (red, black, blue
and yellow colour
Alligator Clip (red, black, blue
and yellow colour)
USB Interface Cable
Software
Tool Box
1.5V Battery (LR6)
Qty
1 piece
1 piece each
colour
1 piece each
colour
1piece
1 piece
1 piece
4 pieces
In the event you find any missing or damage, please
contact your dealer immediately.
Overview Unpacking Inspection

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Model UT233: OPERATING MANUAL
Safety Information
This Meter complies with the standards IEC61010: in
pollution degree 2, overvoltage category (CAT. III 600V,
CAT IV 300V) and double insulation.
CAT. III: Distribution level, fixed installation, with smaller
transient overvoltages than CAT. IV.
CAT IV: Primary supply level, overhead lines, cable
systems.
Use the Meter only as specified in this operating manual,
otherwise the protection provided by the Meter may be
impaired.
In this manual, a Warning identifies conditions and
actions that pose hazards to the user, or may damage
the Meter or the equipment under test.
A Note identifies the information that user should pay
attention to.
International electrical symbols used on the Meter and
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in this Operating Manual are explained on page 6.
Rules For Safe Operation
Warning
To avoid possible electric shock or personal injury,
and to avoid possible damage to the Meter or to the
equipment under test, adhere to the following rules:
Before using the Meter inspect the case. Do
not use the Meter if it is damaged or the case
(or part of the case) is removed. Look for cracks
or missing plastic. Pay attention to the insulation
around the connectors.
Inspect the test leads for damaged insulation
or exposed metal. Replace damaged test leads
with identical model number or electrical
specifications before using the Meter.
Do not apply more that the rated voltage, as
marked on the Meter.
When measurement has been completed,
disconnect the connection between the test
leads and the circuit under test, remove the

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Model UT233: OPERATING MANUAL
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testing leads away from the input terminals of
the Meter and turn the Meter power off.
Do not carry out the measurement when the
Meterís back case and / or battery door is opened
to avoid electric shock.
When the Meter working at an effective voltage
over 30V in AC, special care should be taken.
Use the proper terminals and function for your
measurements.
Do not use or store the Meter in an environment
of high temperature, humidity, explosive,
inflammable and strong magnetic field. The
performance of the Meter may deteriorate after
dampened.
Do not use the Meter if the surface of it is wet
or the userís hands are wet.
When using the test leads, keep your fingers
behind the finger guards.
Replace the battery as soon as the battery
indicator appears. With a low battery, the
Meter might produce false readings that can
lead to electric shock and personal injury.
When opening the battery door, must make sure
the Meter is power off.
When servicing the Meter, use only the same
model number or identical electrical
specifications replacement parts.
The internal circuit of the Meter shall not be
altered at will to avoid damage of the Meter and
any accident.
Soft cloth and mild detergent should be used
to clean the surface of the Meter when servicing.
No abrasive and solvent should be used to
prevent the surface of the Meter from corrosion,
damage and accident.
Turn the Meter off when it is not in use and take
out the battery when not using for a long time.
Constantly check the battery as it may leak
when it has been using for some time, replace
the battery as soon as leaking appears. A
leaking battery will damage the Meter.

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Model UT232: OPERATING MANUAL
International Electrical Symbols
AC (Alternating Current)
Grounding
Double Insulated
Warning. Refer to the Operating Manual
Deficiency of Built-In Battery
Danger of High Voltage
Conforms to Standards of European Union

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Model UT233: OPERATING MANUAL
Figure 1
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Transformer Jaw: designed to pick up the AC
and DC current flowing through the conductor.
It could transfer current to voltage. The tested
conductor must vertically go through the Jaw
center.
Hand Guards: to protect userís hand from
touching the dangerous area.
Power button
Max/ button
MENU button
LOAD button (recall data)
SELECT button (press to select alternate
function and sum of Watts measurement)
MIN/ button
V3 Input Terminal (Third phase measurement)
V2 Input Terminal
(Second phase measurement)
V1 Input Terminal (First phase measurement)
COM Input Terminal
CLEAR button (maximum and minimum)
The Meter Structure
A. The Meter Front Structure (see figure 1)
Black Red Blue Yellow

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Model UT233: OPERATING MANUAL
1 Infrared slot
2 USB Interface Cable
Figure 2
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button (Sum)
SAVE button (data store button)
USB button
LIGHT button (auto display backlight button)
HOLD button
LCD Display
Testing Leads (Red, Black, Blue and Yellow)
B. The Meter Back and Bottom Structure (see
figure2)

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Model UT233: OPERATING MANUAL
Functional Buttons
Below table indicated for information about the functional
button operations.
Button
POWER
HOLD
LIGHT
MENU
Button
MENU
Operation Performed
Press and hold POWER for 1 second
to turn the Meter on.
Press POWER again to turn the Meter
off.
Press HOLD to enter the Hold mode
in any mode,appears and the Meter
beeps.
Press HOLD again to exit the Hold
mode to return to measurement mode,
the Meter beeps and disappears.
Press LIGHT to turn the display backlight
on.
Thedisplay backlightwillbe offautomatically
after 30 seconds.
Press MENU to display the following
functions in sequence:
Active power (main display) +AC Voltage
(left secondary display) + AC Current
(right secondary display)
Operation Performed
Apparent Power (main display) + AC
Voltage (left secondary display) + AC
Current (right secondary display)
Reactive Power (main display) + AC
Voltage (left secondary display) + AC
Current (right secondary display)
Power Factor (main display) + AC
Voltage (left secondary display) + AC
Current (right secondary display)
Phase Angle (main display) + AC
Voltage (left secondary display) + AC
Current (right secondary display).
Frequency (main display) + AC
Voltage (left secondary display) +AC
Current (right secondary display).
Active Energy (main display) + Active
Power (left secondary display) + Time
(right secondary display)

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Model UT233: OPERATING MANUAL
Button Button
SAVE
MAX/
Operation Performed
MENU Phase sequence
Press to start recording of maximum value,
it valid at voltage, current, active power,
apparent power and reactive power
ranges only.
Press once at LOAD mode, MR icon
shown, the Meter displays the next
stored reading
LOAD Press once to enter LOAD mode, MR
appears and the Meter beeps.
Press again to exit LOAD mode, MR
disappears and the Meter beeps.
Press and hold LOAD for 1 second to
display the stored data quickly.
SELECT AtActive power (main display) +AC Voltage
(left secondary display) +AC Current (right
secondary display) mode, press SELECT
button to step through first phase, second
phase, third phase and sum of watts.
Operation Performed
SELECT At other mode except phase sequence,
press SELECT to step through first
phase, second phase and the third
phase.
Press once to store single reading,
Press and hold for over 1 second to
continuous store reading. Press SAVE
again to exit. The maximum number
of data store is 99, when it achieves
99, the Meter shows FULL. Press
CLEAR to clear the stored reading in
order to store next reading.
CLEAR At active energy range, press to reset
time the zero, then restart the timing.
At all other ranges, press to clear stored
readings.
MIN / Press to start recording of minimum
value, it valid at voltage, current, active
power, apparent power and reactive
power ranges only.

Button Operation Performed
Press once at LOAD mode, MR icon
shown, the Meter displays the previous
stored reading.
At Active power (main display) + Phase
angle (secondary display) mode, press
once button to sum up the current first
phase of 3 phase measurement result.
Then carry out second phase power
measurement.
Press again to sum up the second
phase power measurement result, then
carry out third phase power measurement.
Press again to sum up the third phase
power measurement result, then press
SELECT to enter the measurement of
sum of the watts mode, the display shows
the 3 phase sum of the watts value (Power
factor + Active power + Reactive power).
MIN /
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Model UT233: OPERATING MANUAL

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Model UT233: OPERATING MANUAL
Display Symbols (see figure 3)
Figure 3
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Meaning
Calibration symbol
Indicator for data stored is full
Indicator for clear the stored
reading
Data Output is in progress
Data hold is active
Phase sequence
The battery is low.
Warning: To avoid false
readings, which could lead to
possible electric shock or
personal injury, replace the
battery as soon as the battery
indicator appears.
Watt: Sum of Watt
Third phase symbol
Primary reading unit symbol
Second phase symbol
First phase symbol
Symbol
CAL
FUL
CLR
USB
RST
W
3
2
1
Number

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Model UT233: OPERATING MANUAL
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Meaning
Right secondary display unit
symbol
Unit for second
Unit for minute
Unit for hour
Left secondary display unit symbol
Minimum reading
Maximum reading
Auto ranging indicator
Cos indicator
Indicates negative reading
Indicator forAC voltage or current
Indicator for data store
Indicator for recall the stored
reading
High voltage symbol
Symbol
S
mm
h
KW
MIN
MAX
Auto
Cosφ
MEN
MR
Number

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Model UT233: OPERATING MANUAL
Measurement Operation
Press and hold ON/OFF button for one second to
turn the Meter on. The default range is the last
measurement range when you turned off the Meter.
Replace the battery as soon as the battery indicator
appears on the display.
The active power ranges are:
40A, 100A, 400A and 1000A
The AC Voltage ranges are:
15V, 100V, 300V and 600V
The AC Current ranges are:
40A, 100Am 400A and 1000A
Warning
To avoid damages to the Meter or harms to you,
do you measure higher than AC voltage 600 v.r.s.
and AC current 1000A v.r.s.
Press the MENU to select Active power (main
display) +AC Voltage (left secondary display) +AC
Current (right secondary display) range.
Press the lever to open the transformer jaw, and
clamp them to the corrresponding phase of tested
conductor. If user needs to mesaure any phase of
the 3 phase, then clamp them to that phaseís
conductor.
Connecting method (see figure 4, 5, 6).
1.
2.
3.
A. Active power (main display) + AC Voltage (left
secondary display) +AC Current (right secondary
display) Measurement (see figure 4)
To measure active power + AC voltage + AC current,
connect the Meter as follows:

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Model UT233: OPERATING MANUAL
Figure 4
Insert red test leads to V1 input terminal.
Insert blue test leads to V2 input terminal
Insert yellow test leads to V3 input terminal
Connect red blue and yellow test leads to every
live wire of the 3 phase.
Insert black test leads to COM input terminal and
connect it to the neutrual wire of the 3
phase.
You must specify that this connection is used
when the main transformer have STAR connection.
Black
Red
Blue
Yellow

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Model UT233: OPERATING MANUAL
Insert red test leads to V1 input terminal.
Insert blue test leads to V2 input terminal
Insert black test leads to V3 input terminal and
connecting it to every live wire of the 3 phase.
Figure 5
Red
Blue
Yellow

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Model UT233: OPERATING MANUAL
Figure 6
Insert red test lead to V1, V2 or V3 input terminal
corresponding to one of,1, 2 or 3phase
Insert black test leads to COM input terminal.
Connecting the two test leads to live and neutual
wires.
When measuring 3 phases 4 wires or 3 phases 3
wires:(see figure 7, 8, 9, 10, 11, 12, 13).
4.
Press SELECT to choose first phase 1, see
figure 7. The triple displays show the acitve
power kW value, the voltage value and the current
value of 1.
If necessary, press to get the sum of watts as
figure 8.
Figure 7
Figure 8
Black
Red

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Model UT233: OPERATING MANUAL
After sum up the current power measurement value
of the first phase, then press SELECT to choose
the second phase 2, as figure 9.
Figure 9
The triple displays shows the value of acitve power
kW, AC voltage V and AC current A of 2.
If ncessary, press to get the sum of watts as figure
10.
Figure 11
After sum up the current power meaursuremnt value
of the second phase, then press SELECT again to
choose the third phase 3, as figure 11.
The triple displays shows the value of acitve power
KW, AC voltage V and AC current A of 3.
If ncessary, press to get the sum of watts as figure
12.
Figure 12Figure 10

Model UT233: OPERATING MANUAL
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After sum up the current power measurement value
of the third phase, finally press SELECT again to
display the 3 phases sum of waltt value (sum of
power factor + sum of active power + sum of reactive
power).
Figure 13
The maximum power is 600kW of single phase active
power, OLwill be displayed when it is over than that.
The maximum range is 1800kW of three phase sum
of active power and reactive power, OL will be
displayed when it is over than that.
Press MAX/ , the display shows MAX, it starts
recording the maximum active power value, voltage
value and current value. Press again to display the
current active power value, voltage value and current
value.
Press MIN/ , the display shows MIN, it starts
recording the minimum active power value, voltage
value and current value. Press again to display the
current active power value, voltage value and current
value.
5.
6.
7.