UNI-T UT527 Operating Manual
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UNI-T UT527 Operating Manual

Handheld, battery powered pat tester
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P/N:110401104471X

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Summary of Contents for UNI-T UT527

  • Page 1 P/N:110401104471X...
  • Page 2 UT527 Operating Manual Overview - UT527 Pat Tester The UT527 is a handheld, battery powered PAT tester suitable for carrying out electrical safety checks on: ● Class I Appliances Class II Appliances ● Testing IEC and Extension Leads ● ●...
  • Page 3 ＊ UT527 Main Unit ＊ Operating Manual ＊ Earth Bond Lead ＊ Alligator Earth Bond Clip ＊ Earth Nulling Block ＊ Neck strap ＊ IEC Lead ＊ Batteries C Type R14 1.5V UM2 Safety Information Warnings Please be aware of the following warnings: ●...
  • Page 4 If the tester requires repair or replacement please contact your local service center. Declaration of Conformity. Uni-T manufacture this product and declare that this product conforms to the following standards: BS EN 61326: 1998 Electrical equipment for measurement, control and laboratory use...
  • Page 5 4mm banana test lead (CAT III 600V) Alligator clip (CAT III 600V or CAT IV300V) 1. Product Layout – UT527 Diagram 1 and Diagram 2...
  • Page 6 1. Class 1 test selected 2. Class 2 test selected 3. Cord test / IEC / Extension lead test selected 4. Mains socket test Live Neutral and Earth indicators 5. Check the connection – Ensure that the appliance is switched on before test 6.
  • Page 7 13 14 Front Panel Operation 1: Press button, Power on / Power Off. 2: Press button, when testing a CLASS I Appliance. 3: Press button, when testing a CLASS II Appliance. 4: Press button when testing Cord / Extension Lead Test.
  • Page 8 Testing a CLASS 1 Appliance Plug the appliance into the UT527 panel main socket Plug the earth test lead into the socket (13) on the UT527 end panel. Connect the earth crocodile clip to an exposed metal part on the appliance as below.
  • Page 9 1. Earth / Protective conductor test Press the Class 1 test button to start the test. If the earth resistance measured is greater than 0.2 Ω, the meter will display “×” Earth Cont with “ ” flashing which is a FAIL. If this occurs, re- check the connections between the pin of the plug to the bodywork of the appliance and that the crocodile clip is attached to clean earthed metalwork on the appliance;...
  • Page 10 The PASS mark for the earth bond test is 0.2 Ω for a Class 1 appliance. If the reading is less than 0.2 Ω, the meter will display “√” Earth Cont which is a PASS. The unit will then automatically attempt to proceed to the Insulation test. Press the button to proceed to the insulation test.
  • Page 11 Notes: To interrupt a test press any other key whilst carrying out the tests. Testing a CLASS 2 Appliance Plug the appliance into the UT527 panel main socket. Plug the earth / insulation test lead into the socket on the UT527 end panel. Connect the earth test probe to...
  • Page 12 an exposed part on the appliance as in diagram 4. To start a test on a Class 2 appliance press the button. Class 2 pre-check If the unit detects that the appliance appears to be Class 1 as it detects an earth connection it will display Check Connection “Earth Cont”...
  • Page 13 Insulation Resistance Test – Class 2 Appliance Before the unit carries out the insulation test the unit will attempt to check to see if the appliance is in the on position. If it detects that the appliance is in the on position it will automatically carry out the Insulation test.
  • Page 14 If the insulation of the appliance is less than 2 MΩ, it will display “×” Insulation as a FAIL Final Result - Class 2 After the above tests are completed, the meter will indicate whether the appliance has Passed or Failed the Class 2 test. Testing an IEC Lead / Extension Lead / Cord Test Plug the mains lead under test into the socket and the front panel mains socket on the unit as Diagram 5...
  • Page 15 To start the cord test press 1. Earth Bond Test The unit will carry out an Earth Bond test in the same manner as a Class 1 appliance. The Pass mark for this test is 0.2 Ω 2. Insulation Test The unit will then carry out an insulation test as previously discussed in the manual.
  • Page 16 4. Overall Result After the above measurements are completed, the meter will indicate whether the measured appliance is compliant with the requirements of Cord with “PASS” or “FAIL” Checking a mains power supply The unit comes complete with a built in socket tester which will check to ensure that the socket is wired correctly.
  • Page 17 1） If the Live and Neutral in the socket wiring is reversed or there is a fault with the protective earth connection this is indicated : “LN√, LE×, NE×” 2）If there is a fault with the Neutral connection this is indicated: “LN×, LE√, NE×” 3）If the mains socket wiring is correct the display will show “LN√, LE √, NE√...
  • Page 18 Factory default Pass / Fail limits Class 1 Class 2 Cord Earth Continuity 0.2ohms 0.2ohm Insulation Resistance 1.0Mohms 2.0 Mohms 2.0 Mohms Cord Size /Current Rating 0.5 mm /(3A) 1.0mm /(10A) 1.25mm /(13A)5m Length 0.02 0.10 0.10 0.40 0.20 0.20 1.00 0.50 0.40...
  • Page 19 3) Unscrew the battery cover. 4) Use 6 C cell 1.5V R14 battery or UM2 battery. 5) Ensure the polarity of the batteries is correct. 6) Re-attach the battery cover. Cleaning Clean only with a dry cloth; do not use solvents. Before use, ensure unit is clean and dry;...
  • Page 20 Storage temperature range -25 Deg C to 65 Deg C. Batteries should be removed prior to storage. Manufactured by Uni-T an ISO9001 company. Distributed in The UK by: PASS Ltd 1 Alberto Street Stockton On Tees Teesside TS18 2BQ 0800 247 1600...

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