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Nieaf Instruments IRT-S User Manual

Insulation resistance tester
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Insulation Resistance Tester
Supplier:
Specifications of the equipment:
Specifications of the user manual:
User manual
Nieaf-Smitt bv
Vrieslantlaan 6
3526 AA Utrecht Holland
P.O. box 7023 3502 KA Utrecht
IRT-S
Date: 05-02-04
Number: 561144037
Ref.: 004

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Summary of Contents for Nieaf Instruments IRT-S

  • Page 1 User manual Insulation Resistance Tester Supplier: Nieaf-Smitt bv Vrieslantlaan 6 3526 AA Utrecht Holland P.O. box 7023 3502 KA Utrecht Specifications of the equipment: IRT-S Date: 05-02-04 Specifications of the user manual: Number: 561144037 Ref.: 004...
  • Page 2 Preface This manual describes the Insulation Resistance Tester. The information in this manual is important for proper and safe functioning of the machine. In case you are not familiar with the operation, the preventive maintenance, etc. of the Insulation Resistance Tester, then you read this user manual from the beginning to the end thoroughly.
  • Page 3 Warranty Nieaf-Smitt bv guaranties the tester for a period of 6 months. The period of warranty will be effective at the day of delivery. The warranty clauses and the stipulations regarding liability in terms of delivery (FME and HE). © Copyright 1997 All rights reserved.
  • Page 4 Warning pictograms on the tester There are a number of pictograms on the tester, meant to warn the user of remaining risks that may be present in spite of the safe design. Table 1: Pictograms on the tester Pictogram Description Location on the tester Warning: At the back side of the tester on the instruction...

  • Page 5: Table Of Contents

    CONTENTS 1. GENERAL SAFETY REGULATIONS ........................7 2. INTRODUCTION ..............................8 2.1 GENERAL ................................ 8 2.1.1 The intended use............................8 2.1.2 Target group ............................8 2.1.3 Working principle............................ 9 2.2 SPECIFICATIONS ............................10 2.3 CERTIFICATION ............................11 3. TESTER COMPOSITION ............................ 12 3.1 GENERAL ..............................
  • Page 6 Tables: Table 1: Pictograms on the tester Table 2: Switches Table 3: Sub results and parameters Table 4: General faults and warnings Figures: Figure 1: Operating Figure 2: Identification number of each function Figure 3: RS232 connector Figure 4: RS232 cable Figure 5: An example of print out Figure 6: Batteries inserted Attachments:...

  • Page 7: General Safety Regulations

    1. GENERAL SAFETY REGULATIONS It is not allowed to remove, to skirt or to tide over (by handy constructions) the enclosure or safeties of the tester during normal use. Method of measurement and range are indicated on the back side of the instrument. It is not allowed to change or remove the case or protections of the tester during normal use and without written constent from Nieaf-Smitt bv.

  • Page 8: Introduction

    2.1 GENERAL 2.1.1 The intended use The IRT-S is intended for execution of low resistance, voltage and insulation resistance measurements. If the instrument is used in manner not specified in this user manual, the protection provided by the instrument may be impaired and the supplier is excluded from any responsibility.

  • Page 9: Working Principle

    2.1.3 Working principle Structure The IRT-S is a professional microprocessor-controlled instrument, intended for the execution of low resistance, voltage and insulation resistance measurements. Select the test by means of the rotary switch. Now the user is able to prescribe the desired measuring method. The test results are clearly displayed on the LCD.

  • Page 10: Specifications

    2.2 SPECIFICATIONS General Power supply 4 x 1,5 V IEC LR14 alkaline batteries Battery life time approx. 1200 measurements (1 measurement per 5 minutes) Display 3 digit 7 segment LCD 19mm Quality standard design, development and production according to ISO 9001 Mass approx.

  • Page 11: Certification

    Insulation resistance (Riso) using 1000 V (0-10%) Open circuit output voltage 1000 V / 0 - 10% ≥ 1 mA at 1000 kΩ load Measuring current Range (auto rang) 0 - 1,999 MΩ / 2,00 - 19,99 MΩ / 20,0 - 199,9 MΩ Resolution 0,001 MΩ...

  • Page 12: Tester Composition

    3.1 GENERAL The IRT-S is built in an enclosure of solid ABS plastic. The display is situated at the front side of the tester. The test results are displayed. The main parts (see figures in Chapter 5) are listed below: Front: 1.

  • Page 13: Insulation Resistance Measurement

    3.2.4 Beeping The IRT-S is equipped with adjustable limits that can be used as an indication for the value of the resistance measured. This method is called “beeping” of an object. After setting a minimum and maximum limit, a sound signal will be produced each time a result is between these limits.

  • Page 14: Installation; Start-Up And Adjusting

    3. Insert the batteries in the instrument. 4. Connect the test object according to the circuit diagrams with the IRT-S. 5. Carry out the selected test. Find a place to put the manual such that it is within reach during the use of the instrument.

  • Page 15: How To Use The Tester

    HOW TO USE THE TESTER ? OPERATION 1. On/off key 1. Instruction label 2. Rotary switch 2. Serial number 3. Clear memory key 3. Battery cover 4. DISPLAY key 4. fixing screw for battery cover 5. Test voltage key 5. Plastic cover of the locking screw 6.
  • Page 16 Keys Function key description. Table 2: Switches Selector position Description On/off - to switch on/off the tester; the tester will switch off automatically after it hasn’t been used for ten minutes or more; Recall result - to recall the saved results; Save result - to save the displayed measuring results;...

  • Page 17: Starting

    5.1.1 Starting Operating the instrument may only be done by competent persons. Never open the instrument during thre esting. Check before every test: * cables and test cords on possible damages; * tester on possible damages and/or defects. 1. Check the instrument on visible damages and/or defects, for example the power plug, the line cord etc.
  • Page 18 5.2.1 Test 1: Insulation resistance measurement Do not disconnect the test cords during the measurement, because measured object can stay charged => dangerous; - Do not touch the object or test cords during the measurement => hazardous voltage can be present; - Each result can be saved only once.

  • Page 19: Test 1: Insulation Resistance Measurement

    5.2.3 Test 3: Beeping the installation A beep sound can be used as an indication for a good result in low resistance measurement (also paragraph 3.2.4). A signal will be produced every time the measurement result will be between the upper and lower resistance limits.

  • Page 20: Memorising Of Results

    Max. allowed input voltage is 440 Volts. How to carry out test 3: 1. Connect the test cords with the instrument conform the circuit diagram of attachment 2. 2. Set the rotary switch to [Mains voltage (V) / mains frequency (f)]. 3.

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