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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 V AC Current Measurement
B. Apparent Power + AC V AC Current Measurement
C. Reactive Power + AC V AC Current Measurement

D. Power Factor cos + AC V AC Current Measurement
E. Phase Angle + AC V AC Current Measurement
F. Frequency Hz + AC V AC Current Measurement
G. Active Active Power + Time Measurement

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3
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6
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9
12
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24
26
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30
32

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Summary of Contents for UT233

Page 1: ...Model UT233 OPERATING MANUAL ...

Page 2: ...re 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 Measu...

Page 3: ...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 ...

Page 4: ...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 1 2 3 4 5 6 7 Description English Operating Manual Test Lead red black blue and yellow colo...

Page 5: ...o International electrical symbols used on the Meter and l l l l 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 ...

Page 6: ...uards 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 no...

Page 7: ...G 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 ...

Page 8: ...ds 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 Str...

Page 9: ...Interface Cable Figure 2 14 15 16 17 18 19 20 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 ...

Page 10: ... 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 dis...

Page 11: ...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 st...

Page 12: ...se 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 powe...

Page 13: ...ull 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 CL...

Page 14: ...nd Unit for minute Unit for hour Left secondary display unit symbol Minimum reading Maximum reading Auto ranging indicator Cos indicator Indicates negative reading Indicator for AC 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 ...

Page 15: ...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 t...

Page 16: ...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 ...

Page 17: ...ATING 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 ...

Page 18: ...inal 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 ...

Page 19: ...tve 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 ...

Page 20: ...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 a...

Page 21: ...d minimum value cannot sum up and save Only at this range can carry out sum of watts measurement other ranges cannot carry out this measurement USB interface connection is invalid when carrying out sum of watt measurement When testing has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals Note ...

Page 22: ...o that phaseís conductor The connecting method of 3 phases 4 wires 3 phases 3 wires or single phase 2 wires see figure 4 5 and 6 1 2 3 Press SELECT to choose the first phase 1 see figure 15 The triple displays shows the first phase value of apparent power kVA AC voltage V and AC current A Then press SELECT again to choose the second phase 2 see figure 16 To avoid damages to the Meter or harms to y...

Page 23: ...se 4 wires Jump over the third phase measurement The maximum measuring range is 600kW when measuring single phase apparent power kVA OL wil be displayed when it is over than that Press MAX the display shows MAX it starts recording the maximum apparent power value AC voltage value and AC current value Press again to display the current apparent power value AC voltage value and AC current value Pres...

Page 24: ...Model UT233 OPERATING MANUAL 23 When testing has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals Note ...

Page 25: ...do you measure higher than AC voltage 600V rms and AC current 1000A rms To test for Reactive Power main display AC Voltage left secondary display AC Current right secondary display connect the Meter as follows 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 The connecting method of 3 phases 4 wir...

Page 26: ... first phase and second phase operating method is same as three phase 4 wires Jump over the third phase measurement 6 The maximum measuring range is 600kW when measuring single phase reactive power Kvar OL wil be displayed when it is over than that 7 MAX and MIN are not valid at this measurement mode When testing has been completed disconnect the connection between the testing leads and the circui...

Page 27: ... Voltage left secondary display AC Current right secondary display range 2 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 3 The connecting method of 3 phases 4 wires 3 phases 3 wires or single phase 2 wires see figure 4 5 and 6 4 When measuring 3 p...

Page 28: ...he third phase value of power factor cos AC Voltage V and AC Current A 5 When measuring 3 phase 3 wires The first phase and second phase operating method is same as three phase 4 wires Jump over the third phase measurement 6 MAX and MIN are not valid at this measurement mode Note When testing has been completed disconnect the connection between the testing leads and the circuit under test and remo...

Page 29: ...e 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 The connecting method of 3 phases 4 wires 3 phases 3 wires or single phase 2 wires see figure 4 5 and 6 1 2 3 When measuring 3 phase 4 ...

Page 30: ...value of phase angle AC Voltage V and AC Current A Figure 26 When measuring 3 phase 3 wires 5 The first phase and second phase operating method is same as three phase 4 wires Jump over the third phase measurement MAX and MIN are not valid at this measurement mode 6 Note When testing has been completed disconnect the connection between the testing leads and the circuit under test and remove testing...

Page 31: ...ndary display AC Current right secondary display connect the Meter as follows 1 2 Press the MENU to select Frequency Hz 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 con...

Page 32: ... to choose the third phase 3 see figure 29 Figure 29 The triple displays shows the third phase value of Frequency Hz AC Voltage V and AC Current A 5 When measuring 3 phase 3 wires The first phase and second phase operating method is same as three phase 4 wires Jump over the third phase measurement MAX and MIN are not valid at this measurement mode 6 Note When testing has been completed disconnect ...

Page 33: ...orrresponding phase of tested conductor If user needs to mesaure any phase of the 3 phase then clamp them to that phaseís conductor The connecting method of 3 phases 4 wires 3 phases 3 wires or single phase 2 wires see figure 4 5 and 6 4 Press SELECT to choose one of the three phases 1 2 3 see figure 30 The double display shows the value of tested objectís active engergy kWh value and the measurin...

Page 34: ...X and MIN are not valid at this measurement mode Press CLEAR to reset the time USB interface feature is not valid at this measurement mode 5 6 7 Note When there is no input signal it cannot carry out active energy measurement When there is input signal the maximum waiting time is around 10s before timing When testing has been completed disconnect the connection between the testing leads and the ci...

Page 35: ... Insert blue test lead into V2 input terminal Insert yellow test lead into V3 input terminal Insert black test lead into COM input terminal Connect these four test leads to the circuit under test or the loading of three phases and grounding terminal For the loaded return circuit of 3 phases 4 wires the Meter shows the phase sequence result as figure 32 33 and 34 Figure 31 Figure 32 phase missing F...

Page 36: ... terminal and V3 input terminal base on the below table connecting A phase B phase and C phase all three phases voltage are over 100V LCD displays positive phase sequence result Positive phase sequence A B C phases V1 A B C V2 B C A V3 C A B Input Terminal Checking Result Positve phase sequence V1 input terminal corresponding voltage V2 input terminal corresponding voltage ...

Page 37: ...nce A B C V2 input terminal corresponding voltage V1 input terminal corresponding voltage V3 input terminal corresponding voltage Figure 36 When any one phaseís voltage has no singal or less than 100V at 3 phases 4 wires overload mode the LCD display missing phase result USB interface feature is not valid at this measurement mode 4 5 Note Postive and negative phase sequence checking voltage range ...

Page 38: ...um value display Voltage Current Active Power Apparent Power and Reactive Power ranges Display Backlight Computer connection USB Sleep Mode To preserve battery life the Meter automatically turns off if you do not turn press any button for around 15 minutes except at active energy range 37 Model UT233 OPERATING MANUAL Analogue Bar Graph Sampling High speed 2 times per second Low speed 1 time per 3 ...

Page 39: ...B Environmental Requirements 38 Model UT233 OPERATING MANUAL ...

Page 40: ...mperature 23 5 Operating humidity 45 75 R H A AC Voltage True RMS Range 15V 100V 300V 600V Resolution 0 1V Accuracy 1 2 5 Allowable Maximum overload protection voltage 600 RMS Input Impedance 10M B Frequency Range 20Hz 500Hz Resolution 1Hz Accuracy 0 5 5 Model UT233 OPERATING MANUAL 39 ...

Page 41: ... 00kW 240 0kW 600 0kW Voltages Range Accuracy Resolution At 15 1000A range 3 10 Others 3 5 100kW 0 01kW 100kW 0 1kW Remarks Allowable maximum overload protection voltage 600V RMS Allowable maximum overload protection current 1000A RMS C AC Current True RMS Range 40A 100A 400A 1000A Resolution 0 1A 1A Accuracy 2 5 Allowable Maximum overload protection current 1000A RMS Model UT233 OPERATING MANUAL ...

Page 42: ...kVA 100V 4 00kVA 10 00kVA 40 00kVA 100 0kVA 300V 12 00kVA 30 00kVA 120 0kVA 300 0kVA 600V 24 00kVA 60 00kVA 240 0kVA 600 0kVA Voltages Range Accuracy Resolution Remarks Allowable maximum overload protection voltage 600V RMS Allowable maximum overload protection current 1000A RMS At 15 1000A range 3 10 Others 3 5 100kVA 0 01kVA 100kVA 0 1kVA ...

Page 43: ...ar 100V 4 00kVar 10 00kVar 40 00kVar 100 0kVar 300V 12 00kVar 30 00kVar 120 0kVar 300 0kVar 600V 24 00kVar 60 00kVar 240 0kVar 600 0kVar Voltages Range Accuracy Resolution 15V 1000A Range 4 20 Other 4 5 100kVar 0 01kVar 100kVar 0 1kVar Remarks Allowable maximum overload protection voltage 600V RMS Allowable maximum overload protection current 1000A RMS ...

Page 44: ...n 45V For reference only H Phase Angle PG acos PF Range 0 360 0 360 Accuracy 1 Resolution 1 Measuring Condition The minimum measuring current 10A The minimum measuring voltage 45V Measuring current less than 10A OR Measuring voltage less than 45V For reference only Remarks Allowable maximum overload protection voltage 600V RMS Allowable maximum overload protection current 1000A RMS Remarks Allowab...

Page 45: ...UT233 OPERATING MANUAL I Active Energy kWh Range 1 9999kWh Accuracy 3 2 Resolution 0 001kWh Remarks Allowable maximum overload protection voltage 600V RMS Allowable maximum overload protection current 1000A RMS ...

Page 46: ... to the Meter do not get water inside the case Warning A General Service Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents To clean the terminals with cotton bar with detergent as dirt or moisture in the terminals can affect readings Turn the Meter power off when it is not in use Take out the battery when it is not using for a long time Do not use or ...

Page 47: ...from the circuit being tested before opening the case bottom Warning To replace the battery 1 2 3 4 5 Press POWER to turn the Meter off and remove all the connections from the input terminals Turn the Meterís front case down Remove the screw from the battery door and separate the battery door from the case bottom Take out the old battery and replace with 4 x 1 5V battery LR6 Rejoin the case bottom...

Page 48: ...Model UT233 OPERATING MANUAL 47 This operating manual is subject to change without notice END ...

Page 49: ...Limited Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men Town Dongguan City Guang Dong Province China Postal Code 523 925 Headquarters Uni Trend Group Limited Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http www uni trend com ...

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