Model UT233 OPERATING MANUAL
Model UT233: OPERATING MANUAL TABLE OF CONTENTS TITLE 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.
Model UT233: OPERATING MANUAL TABLE OF CONTENTS TITLE 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.
Model UT233: OPERATING MANUAL Overview Unpacking Inspection This Operating Manual covers information on safety and cautions. Please read the relevant information carefully and observe all the Warnings and Notes strictly. Open the package case and take out the Meter. Check the following items carefully to see any missing or damaged part: Warning To avoid electric shock or personal injury, read the ìSafety Informationî and ìRules for Safe Operationî carefully before using the Meter.
Model UT233: OPERATING MANUAL Safety Information in this Operating Manual are explained on page 6. This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CAT. III 600V, CAT IV 300V) and double insulation. Rules For Safe Operation CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT. IV. CAT IV: Primary supply level, overhead lines, cable systems.
Model UT233: OPERATING MANUAL l l l l l l l 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.
Model UT232: OPERATING MANUAL International Electrical Symbols AC (Alternating Current) Grounding Double Insulated Warning.
Model UT233: OPERATING MANUAL 1 The Meter Structure A. The Meter Front Structure (see figure 1) 2 Black Red Blue Yellow 3 4 5 6 7 8 9 10 11 12 13 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.
Model UT233: OPERATING MANUAL 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.
Model UT233: OPERATING MANUAL Functional Buttons Below table indicated for information about the functional button operations. Button POWER HOLD LIGHT 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.
Model UT233: OPERATING MANUAL Button MENU MAX/ LOAD SELECT 10 Operation Performed 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 Press once to enter LOAD mode, MR appears and the Meter beeps. Press again to exit LOAD mode, MR disappears and the Meter beeps.
Model UT233: OPERATING MANUAL Button MIN / 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.
Model UT233: OPERATING MANUAL Display Symbols (see figure 3) Number 1 2 3 Symbol CAL FUL CLR 4 5 6 7 USB 8 9 10 11 12 W 3 1 2 3 4 5 6 7 26 25 24 23 22 21 20 8 9 10 11 12 13 19 18 17 16 15 14 Figure 3 12 RST 2 1 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.
Model UT233: OPERATING MANUAL Number Symbol Meaning Right secondary display unit 13 symbol S Unit for second 14 mm Unit for minute 15 h Unit for hour 16 KW Left secondary display unit symbol 17 MIN Minimum reading 18 MAX Maximum reading 19 Auto Auto ranging indicator 20 Cos indicator Cosφ 21 Indicates negative reading 22 Indicator for AC voltage or current 23 Indicator for data store MEN 24 Indicator for recall the stored MR 25 reading High voltage symbol 26 13
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. A.
Model UT233: OPERATING MANUAL Red Blue 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.
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.
Model UT233: OPERATING MANUAL 4. When measuring 3 phases 4 wires or 3 phases 3 wires:(see figure 7, 8, 9, 10, 11, 12, 13). 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. Red Black Figure 7 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.
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 10 18 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.
Model UT233: OPERATING MANUAL 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 5. The maximum power is 600kW of single phase active power, OL will 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. 6.
Model UT233: OPERATING MANUAL Note When there is no input or single phase, the Meter displays OL. button is not valid. It can only sum up and save the current measurement value. The maximum and 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.
Model UT233: OPERATING MANUAL B. Apparent Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement Warning 4. When measuring 3 phase 4 wires: (see figure 15, 16, 17). Press SELECT to choose the first phase 1, see figure 15. To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.
Model UT233: OPERATING MANUAL The triple displays shows the third phase value of apparent power kVA, AC voltage V and AC current A. 5. When measuring 3 phase 3 wires: Figure 16 The triple displays shows the second phase value of apparent power kVA, AC voltage V and AC current A. Press SELECT again to choose the third phase 3, see figure 17. Figure 17 22 The first phase and second phase operating method is same as three phase 4 wires. Jump over the third phase measurement. 6.
Model UT233: OPERATING MANUAL Note 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.
Model UT233: OPERATING MANUAL C. Reactive Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement Warning To avoid damages to the Meter or harms to you, 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.
Model UT233: OPERATING MANUAL Then press SELECT again to choose the second phase 2, see figure 19. Figure 19 The triple displays shows the second phase value of reactive power Kvar, AC voltage V and AC current A. Press SELECT again to choose the third phase 3, see figure 20. The triple displays shows the third phase value of reactive power Kvar, 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.
Model UT233: OPERATING MANUAL D. Power Factor cos (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement Warning 4. When measuring 3 phase 4 wires: (see figure 21, 22, 23) l Press SELECT to choose the first phase see figure 21. 1, To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.
Model UT233: OPERATING MANUAL 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. Figure 22 The triple displays shows the second phase value of power factor cos , AC Voltage V and AC Current A. Press SELECT again to choose the third phase 3, see figure 23. 6. MAX/ and MIN/ are not valid at this measurement mode.
Model UT233: OPERATING MANUAL E. Phase Angle (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement Warning 4. When measuring 3 phase 4 wires: (see figure 24, 25, 26) Press SELECT to choose the first phase see figure 24. 1, To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.
Model UT233: OPERATING MANUAL The triple displays shows the second phase value of phase angle AC Voltage V and AC Current A. Press SELECT again to choose the third phase 3, see figure 26. 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/ mode.
Model UT233: OPERATING MANUAL F. Frequency Hz (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement Warning To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms. 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 phase 4 wires: (see figure 27, 28, 29) Press SELECT to choose the first phase figure 27.
Model UT233: OPERATING MANUAL The triple displays shows the first phase value of frequency Hz, AC Voltage V and AC Current A. Then press SELECT again to choose the second phase 2, see figure 28 Figure 29 Figure 28 The triple displays shows the second phase value of Frequency Hz AC Voltage V and AC Current A. Press SELECT again to choose the third phase 3, see figure 29. The triple displays shows the third phase value of Frequency Hz, AC Voltage V and AC Current A. 5.
Model UT233: OPERATING MANUAL G. Active Energy (main display) + Active Power (left secondary display) + Time (right secondary display) Measurement 4. Press SELECT to choose one of the three phases ( 1, 2, 3), see figure 30. Warning To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms. To test for Active Energy (main display) + Active Power (left secondary display) + Time (right secondary display), connect the Meter as follows: 1.
Model UT233: OPERATING MANUAL When the measuring time is over 24 hours or the Meter is switched to other measuring ranges, active energy measuring will stop. The maximum readinng of acitve energy is 9999kWh. OL will be displayed when the reading is over than that. 5. MAX/ and MIN/ are not valid at this measurement mode. 6. Press CLEAR to reset the time. 7. USB interface feature is not valid at this measurement mode. Note When there is no input signal, it cannot carry out active energy measurement.
Model UT233: OPERATING MANUAL H. Phase Sequence For Phase Sequence Judging, connect the Meter as follows: 1. Press the MENU to select AC Voltage (main display) + AC Voltage (left secondary display) + AC Voltage (right secondary display) range as figure 31. Insert red test lead into V1 input terminal. Insert blue test lead into V2 input terminal. Insert yellow test lead into V3 input terminal. Insert black test lead into COM input terminal.
Model UT233: OPERATING MANUAL 2. Positive phase sequence is shown as below figure 35.
Model UT233: OPERATING MANUAL 3. Negative phase sequence is shown as below figure. When V1 input terminal, V2 input 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 negative phase sequence result, as figure 36. Negative phase sequence A, B, C phases V1 input terminal corresponding voltage. Checking Result Input Terminal V1 V2 V3 A C B B A C C B A Negative phase sequence 4.
Model UT233: OPERATING MANUAL Specifications A. General Specifications Maximum Voltage between any Terminals and grounding: Refer to different range input protection voltage. Display: Multi LCD displays, Maximum display 9999. Ranges: Auto Overloading: Display OL. Battery Deficiency: Display . Data Holding: Display .
Model UT233: OPERATING MANUAL B.
Model UT233: OPERATING MANUAL Accurate Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 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 Input Impedance 600 RMS 10M B. Frequency Range 20Hz~500Hz Resolution 1Hz Accuracy (0.
Model UT233: OPERATING MANUAL C. AC Current (True RMS) Range 40A 100A 400A 1000A Resolution Accuracy Allowable Maximum overload protection current 0.1A (2%+5) 1000A RMS 1A D. Active Power ( W=V x A x COS ) Voltages Range Current / Voltage Current Range Accuracy Resolution 40A 100A 400A 1000A 15V 0.60kW 1.50kW 6.00kW 15.00kW 100V 4.00kW 10.00kW 40.00kW 100.0kW At 15/1000A range: (3%+10) Others: (3%+5) <100kW: 0.01kW 100kW: 0.
Model UT233: OPERATING MANUAL E. Apparent Power (VA = V x A) Voltages Range Current / Voltage Current Range Accuracy Resolution 40A 100A 400A 1000A 15V 0.60kVA 1.50kVA 6.00kVA 15.00kVA 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 At 15/1000A range: (3%+10) Others: (3%+5) <100kVA: 0.01kVA 100kVA: 0.
Model UT233: OPERATING MANUAL F. Reactive Power (Var = V x A x SIN ) Voltages Range Current / Voltage Current Range Accuracy Resolution 40A 100A 400A 1000A 15V 0.60kVar 1.50kVar 6.00kVar 15.00kVar 100V 4.00kVar 10.00kVar 40.00kVar 100.0kVar 15V/1000A Range: (4%+20) <100kVar: 0.01kVar 100kVar: 0.1kVar Remarks: Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS 42 300V 12.00kVar 30.00kVar 120.0kVar 300.0kVar Other : (4%+5) 600V 24.
Model UT233: OPERATING MANUAL G. Power Factor (PF = W / VA) Range 0.3~1 (capacitive or inductive) 0.3~1 (capacitive or inductive) Accuracy 0.022 Resolution 0.001 For reference only Measuring Condition The minimum measuring current 10A The minimum measuring voltage 45V Measuring current less than 10A OR Measuring voltage less than 45V Remarks: Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS H.
Model UT233: OPERATING MANUAL I. Active Energy (kWh) Range 1~9999kWh Accuracy (3%+2) Resolution 0.
Model UT233: OPERATING MANUAL MAINTENANCE This section provides basic maintenance information including battery replacement instruction. high temperature, explosive, inflammable and strong magnetic field. B. Replacing the Battery (see figure 37) Warning Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information. To avoid electrical shock or damage to the Meter, do not get water inside the case. A.
Model UT233: OPERATING MANUAL Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator ì î appears. Make sure the transformer jaw and the tests leads are disconected from the circuit being tested before opening the case bottom. To replace the battery:. 1. Press POWER to turn the Meter off and remove all the connections from the input terminals 2. Turn the Meterís front case down. 3.
Model UT233: OPERATING MANUAL *END* This operating manual is subject to change without notice.
Model UT233: OPERATING MANUAL Copyright 2007 Uni-Trend Group Limited. All rights reserved. Manufacturer: Uni-Trend Technology (Dongguan) 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.
