UNI-T UT233 Operating Manual
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UNI-T UT233 Operating Manual

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Model UT233
OPERATING MANUAL

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Summary of Contents for UNI-T UT233

  • Page 1 Model UT233 OPERATING MANUAL...

  • Page 2: Table Of Contents

    Model UT233: OPERATING MANUAL 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.
  • Page 3 Model UT233: OPERATING MANUAL 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.

  • Page 4: Overview

    Alligator Clip (red, black, blue 1 piece each carefully before using the Meter. and yellow colour) colour Model UT233 is a digital power clamp meter (hereafter USB Interface Cable 1piece referred to as ìthe Meterî) is a handheld intelligent Software...

  • Page 5: Safety Information

    Model UT233: OPERATING MANUAL Safety Information in this Operating Manual are explained on page 6. This Meter complies with the standards IEC61010: in Rules For Safe Operation pollution degree 2, overvoltage category (CAT. III 600V, CAT IV 300V) and double insulation.
  • Page 6 Model UT233: OPERATING MANUAL testing leads away from the input terminals of When opening the battery door, must make sure the Meter and turn the Meter power off. the Meter is power off. Do not carry out the measurement when the When servicing the Meter, use only the same Meterís back case and / or battery door is opened...

  • Page 7: International Electrical Symbols

    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...

  • Page 8: The Meter Structure

    Model UT233: OPERATING MANUAL The Meter Structure Transformer Jaw: designed to pick up the AC and DC current flowing through the conductor. A. The Meter Front Structure (see figure 1) It could transfer current to voltage. The tested conductor must vertically go through the Jaw center.

  • Page 9: The Meter Back And Bottom Structure

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

  • Page 10: Functional Buttons

    Model UT233: OPERATING MANUAL Functional Buttons Button Operation Performed Below table indicated for information about the functional MENU Active power (main display) + AC Voltage button operations. (left secondary display) + AC Current (right secondary display) Operation Performed Button Apparent Power (main display) + AC...
  • Page 11 Model UT233: OPERATING MANUAL Operation Performed Operation Performed Button Button SELECT MENU Phase sequence At other mode except phase sequence, press SELECT to step through first Press to start recording of maximum value, MAX/ phase, second phase and the third...
  • Page 12 Model UT233: OPERATING MANUAL Button Operation Performed Press once at LOAD mode, MR icon MIN / 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.

  • Page 13: Display Symbols

    Model UT233: OPERATING MANUAL Display Symbols (see figure 3) Number Symbol Meaning Calibration symbol Indicator for data stored is full Indicator for clear the stored 1 2 3 4 5 6 7 reading Data Output is in progress Data hold is active Phase sequence The battery is low.
  • Page 14 Model UT233: OPERATING MANUAL Number Symbol 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 Auto ranging indicator Cos indicator Indicates negative reading Indicator for AC voltage or current...

  • Page 15: Measurement Operation

    Model UT233: OPERATING MANUAL Measurement Operation Warning To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600 v.r.s. Press and hold ON/OFF button for one second to and AC current 1000A v.r.s.
  • Page 16 Model UT233: OPERATING MANUAL 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.
  • Page 17 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. Blue...
  • Page 18 Model UT233: OPERATING MANUAL 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 figure 7. The triple displays show the acitve power kW value, the voltage value and the current...
  • Page 19 Model UT233: OPERATING MANUAL After sum up the current power measurement value After sum up the current power meaursuremnt value of the first phase, then press SELECT to choose of the second phase, then press SELECT again to the second phase 2, as figure 9.
  • Page 20 Model UT233: OPERATING MANUAL After sum up the current power measurement value The maximum power is 600kW of single phase active of the third phase, finally press SELECT again to power, OL will be displayed when it is over than that.
  • Page 21 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.

  • Page 22: Apparent Power + Ac Voltage + Ac Current Measurement

    Model UT233: OPERATING MANUAL Apparent Power (main display) + AC Voltage When measuring 3 phase 4 wires: (see figure 15, (left secondary display) + AC Current (right 16, 17). secondary display) Measurement Press SELECT to choose the first phase 1, see figure 15.
  • Page 23 Model UT233: OPERATING MANUAL The triple displays shows the third phase value of apparent power kVA, AC voltage V and AC current A. When measuring 3 phase 3 wires: The first phase and second phase operating method is same as three phase 4 wires.
  • Page 24 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.

  • Page 25: Reactive Power + Ac Voltage + Ac Current Measurement

    Model UT233: OPERATING MANUAL Reactive Power (main display) + AC Voltage (left clamp them to the corrresponding phase of tested secondary display) + AC Current (right secondary conductor. If user needs to mesaure any phase of display) Measurement the 3 phase, then clamp them to that phaseís conductor.
  • Page 26 Model UT233: OPERATING MANUAL The triple displays shows the third phase value Then press SELECT again to choose the second of reactive power Kvar, AC voltage V and AC phase 2, see figure 19. current A. 5. When measuring 3 phase 3 wires: The first phase and second phase operating method is same as three phase 4 wires.

  • Page 27: Power Factor Cos + Ac Voltage + Ac Current Measurement

    Model UT233: OPERATING MANUAL D. Power Factor cos (main display) + AC Voltage 4. When measuring 3 phase 4 wires: (see figure 21, (left secondary display) + AC Current (right 22, 23) secondary display) Measurement l Press SELECT to choose the first phase see figure 21.
  • Page 28 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. 6. MAX/ and MIN/ are not valid at this measurement mode.

  • Page 29: Phase Angle + Ac Voltage + Ac Current Measurement

    Model UT233: OPERATING MANUAL E. Phase Angle (main display) + AC Voltage (left When measuring 3 phase 4 wires: (see figure 24, secondary display) + AC Current (right 25, 26) secondary display) Measurement Press SELECT to choose the first phase see figure 24.
  • Page 30 Model UT233: OPERATING MANUAL The triple displays shows the second phase value When measuring 3 phase 3 wires: of phase angle AC Voltage V and AC Current The first phase and second phase operating method is same as three phase 4 wires.

  • Page 31: Frequency Hz + Ac Voltage + Ac Current Measurement

    Model UT233: OPERATING MANUAL F. Frequency Hz (main display) + AC Voltage (left The connecting method of 3 phases 4 wires, 3 secondary display) + AC Current (right secondary phases 3 wires or single phase 2 wires, see figure display) Measurement...
  • Page 32 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 The triple displays shows the third phase value of Frequency Hz, AC Voltage V and AC Current 5.

  • Page 33: Active Energy + Active Power + Time Measurement

    Model UT233: OPERATING MANUAL G. Active Energy (main display) + Active Power 4. Press SELECT to choose one of the three phases (left secondary display) + Time (right secondary ( 1, 3), see figure 30. 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.
  • Page 34 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.

  • Page 35: Phase Sequence

    Model UT233: OPERATING MANUAL H. Phase Sequence Insert red test lead into V1 input terminal. Insert blue test lead into V2 input terminal. For Phase Sequence Judging, connect the Meter as Insert yellow test lead into V3 input terminal. follows: Insert black test lead into COM input terminal.
  • Page 36 Model UT233: OPERATING MANUAL 2. Positive phase sequence is shown as below figure V1 input terminal corresponding voltage Positive phase sequence Input Terminal A, B, C phases V2 input terminal V3 input terminal corresponding voltage corresponding voltage Figure 35 Checking Result...
  • Page 37 Model UT233: OPERATING MANUAL Negative phase sequence is shown as below figure. Negative phase sequence When V1 input terminal, V2 input terminal and V3 Input Terminal input terminal base on the below table connecting A phase, B phase and C phase, all three phases...

  • Page 38: Specifications

    Model UT233: OPERATING MANUAL Specifications Analogue Bar Graph Sampling: High speed: 2 times per second, Low A. General Specifications speed: 1 time per 3 seconds, Mid speed: 1 time per Maximum Voltage between any Terminals and 2 seconds. grounding: Refer to different range input protection Max.

  • Page 39: Environmental Requirements

    Model UT233: OPERATING MANUAL B. Environmental Requirements...

  • Page 40: Accuracy Specifications

    Model UT233: OPERATING MANUAL Accurate Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 23 Operating humidity: 45~75%R.H A. AC Voltage (True RMS) Range Resolution Accuracy Allowable Maximum overload protection voltage Input Impedance 100V 0.1V (1.2%+5)

  • Page 41: Ac Current (True Rms)

    Model UT233: OPERATING MANUAL C. AC Current (True RMS) Range Resolution Accuracy Allowable Maximum overload protection current 100A 0.1A 400A (2%+5) 1000A RMS 1000A D. Active Power ( W=V x A x COS Voltages Range Current / Voltage 100V 300V 600V 0.60kW...

  • Page 42: Apparent Power

    Model UT233: OPERATING MANUAL E. Apparent Power (VA = V x A) Voltages Range Current / Voltage 100V 300V 600V 0.60kVA 4.00kVA 12.00kVA 24.00kVA 100A 1.50kVA 10.00kVA 30.00kVA 60.00kVA Current Range 400A 6.00kVA 40.00kVA 120.0kVA 240.0kVA 1000A 15.00kVA 100.0kVA 300.0kVA 600.0kVA...

  • Page 43: Reactive Power

    Model UT233: OPERATING MANUAL F. Reactive Power (Var = V x A x SIN Voltages Range Current / Voltage 100V 300V 600V 0.60kVar 4.00kVar 12.00kVar 24.00kVar 100A 1.50kVar 10.00kVar 30.00kVar 60.00kVar Current Range 400A 6.00kVar 40.00kVar 120.0kVar 240.0kVar 1000A 15.00kVar 100.0kVar...

  • Page 44: Power Factor

    Model UT233: OPERATING MANUAL G. Power Factor (PF = W / VA) Range Accuracy Resolution Measuring Condition 0.3~1 The minimum measuring current 10A 0.022 0.001 (capacitive or inductive) The minimum measuring voltage 45V 0.3~1 Measuring current less than 10A OR...

  • Page 45: Active Energy

    Model UT233: OPERATING MANUAL I. Active Energy (kWh) Range Accuracy Resolution 1~9999kWh (3%+2) 0.001kWh Remarks: Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS...

  • Page 46: Maintenance

    Model UT233: OPERATING MANUAL high temperature, explosive, inflammable and strong MAINTENANCE magnetic field. This section provides basic maintenance information including battery replacement instruction. B. Replacing the Battery (see figure 37) Warning Do not attempt to repair or service your Meter unless...
  • Page 47 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.
  • Page 48 Model UT233: OPERATING MANUAL *END* This operating manual is subject to change without notice.
  • Page 49 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...

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