Fluke 1550B User Manual
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Fluke 1550B User Manual

Megohmmeter
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Advanced Test Equipment Rentals
www.atecorp.com 800-404-ATEC (2832)
®
1550B
MegOhmMeter
Users Manual
PN 2102980
August 2003
© 2003 Fluke Corporation. All rights reserved.
All product names are trademarks of their respective companies.

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  • Page 1 ® Advanced Test Equipment Rentals www.atecorp.com 800-404-ATEC (2832) ® 1550B MegOhmMeter Users Manual PN 2102980 August 2003 © 2003 Fluke Corporation. All rights reserved. All product names are trademarks of their respective companies.
  • Page 2 Limited Warranty and Limitation of Liability Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is two years and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This...

  • Page 3: Table Of Contents

    Table of Contents Title Page Introduction................. 1 Contacting Fluke................. 1 Unpacking the Meter..............2 Safety Information ..............3 Symbols..................4 Operating the Meter..............4 Turning the Meter On and Off ..........4 Using the Pushbuttons ............5 Understanding the Display ............6 Charging the Battery ...............
  • Page 4 1550B Users Manual...

  • Page 5: List Of Tables

    Display Features ..............6 Power Supply Connections ............7 Surface Leakage Current ............8 Guard Terminal Connection ............. 9 Improved Guard Terminal Connection ........9 Connecting to the Circuit Under Test ........10 IR Port on 1550B MegOhmMeter ..........18...
  • Page 6 1550B Users Manual Cover Terminals Safety Shutter Display (LCD) IR Port Pushbuttons Latch Handle asw16F.EPS Fluke 1550B MegOhmMeter...

  • Page 7: Introduction

    Meter MegOhm Users Manual Introduction The Fluke 1550B MegOhmMeter (hereafter "the Meter") is a high voltage insulation tester for testing general circuits, including switchgear, motors, and cables. The Meter has the following features: ⇒ Large liquid crystal display (LCD) with text display ⇒...

  • Page 8: Unpacking The Meter

    1550B Users Manual Unpacking the Meter The Meter comes with the items shown in Figure 1. If the Meter is damaged or an item is missing, contact the place of purchase immediately. ASW01F.EPS Item Description English Manual AC Power Cord...

  • Page 9: Safety Information

    • Place test leads in proper input terminals. • Do not use the Meter with any parts or cover removed. • Use only Fluke approved replacement parts, and accessories as specified in this manual. • Do not use the Meter if the safety shutter is impaired in any way. The safety shutter (see Frontispiece) prevents access to the test terminals and charger terminals at the same time.

  • Page 10: Symbols

    1550B Users Manual Symbols Symbols on the Meter and in the manual are explained Table 1. Table 1. Symbols Conforms to European Union standards. TUV GS This product complies with UL3111-1, CAN/CAS C22.2 No.1010.1 for Test and Measurement Equipment Risk of danger.

  • Page 11: Using The Pushbuttons

    MegOhmMeter Operating the Meter Using the Pushbuttons Use the pushbuttons (Figure 2) to control operation of the Meter, select test results for viewing, and scroll through selected test results. (yes) (no) SCROLL DOWN ENTER FUNCTION TEST ASW02F.EPS Item Button Description Turns the Meter off and on.

  • Page 12: Understanding The Display

    1550B Users Manual Understanding the Display Display annunciators are shown and described in Figure 3. 5000V 2500V 000V 500V 250V ASW03F.EPS Item Description Interference present. Displayed readings may be outside the specified accuracy range. Electrical breakdown in Ramp mode. Ramp mode indicator.
  • Page 13 Use a qualified recycler or hazardous materials handler to dispose of dead batteries. Contact your authorized Fluke Service Center for disposal and recycling information. Storing rechargeable lead-acid batteries in a low-charged state could lead to reduced life and/or damage.

  • Page 14: Using The Guard Terminal

    1550B Users Manual Using the Guard Terminal Note Insulation resistance is measured between the + and − output connections. The Guard terminal (G) is at the same potential as the negative ( − ) terminal but is not in the measurement path.
  • Page 15 MegOhmMeter Operating the Meter Figure 6 shows how to prevent surface current leakage by connecting a lead from the Guard terminal to a conductor wrapped around the inner insulation. The surface leakage current is directed to the Guard terminal. This removes the leakage current from the measurement path between the positive and negative terminals, and improves the accuracy of the test readings.

  • Page 16: Making Measurements

    1550B Users Manual Making Measurements Connecting to the Circuit Under Test Warning To avoid possible electric shock or personal injury: • Remove all power from the circuit under test and discharge circuit capacitance before testing a circuit with the Meter.

  • Page 17: Options To Consider Before Making An Insulation Test

    MegOhmMeter Making Measurements Options to Consider Before Making an Insulation Test In addition to performing a basic insulation test, the Meter includes a series of features/functions that allow you to more precisely tailor the test to your requirements. These include defining a test voltage, selecting a ramp test, setting a time limit (duration) for the test, measuring polarization index (PI), measuring dielectric absorption ratio (DAR), and measuring capacitance.

  • Page 18: Programming A Test Voltage

    1550B Users Manual Programming a Test Voltage To set a test voltage in between the pre-set test voltages proceed as follows: button to select TEST VOLTAGE. With the Meter turned on, press the Test Voltage Display 500V ASW05F.EPS Press the button to scroll through the pre-set test voltage options (250 V, 500 V, 1000 V, 2500 V, and 5000 V).

  • Page 19: Selecting A Ramp Or Steady-State Test

    MegOhmMeter Making Measurements Selecting a Ramp or Steady-State Test The ramp-test function is an automated test that checks insulation for a breakdown. During a ramp test, the output voltage starts at 0 V and increases linearly (100 V/s) until it reaches the specified test voltage or until a sudden drop in measured resistance is detected.

  • Page 20: Polarization Index (Pi)

    1550B Users Manual Polarization Index (PI) As part of the insulation test, the Meter measures and stores polarization index (PI), when appropriate. Since, by definition, a polarization index test requires 10 minutes to complete, it is measured and stored as invalid data for all insulation tests under 10 minutes.
  • Page 21 MegOhmMeter Making Measurements To perform an insulation test use the following procedure: With the Meter turned on, set the available measurement options to meet your test requirements. These include: • Test Voltage – Set range: 250V to 5000 V (50 V/100 V steps) •...

  • Page 22: Storing The Test Results

    1550B Users Manual Following termination of an insulation test the Meter beeps when a potentially hazardous voltage remains on the test terminals due to charged-circuit capacitance or from the presence of an external voltage. When the test is terminated, STORE RESULT? is displayed. If appropriate, store the test results as described in the next procedure.

  • Page 23: Viewing Results Stored In Memory

    MegOhmMeter Viewing Results Stored in Memory Viewing Results Stored in Memory Note Parameters not appropriate for a test are shown as INVALID . The Meter can store 99 sets of test data, including: ⇒ Tags ⇒ Ramp on or off ⇒...

  • Page 24: Downloading Your Test Results

    You can use Quicklink software to download all of your stored test data to a PC. An infrared adapter is supplied with the Fluke 1550B MegOhmMeter for use in downloading stored test data. Figure 9 shows the location of the IR port on the Meter.

  • Page 25: Downloading Results To Pc

    If errors are reported, repeat the download procedure. Note Verify that the download was successful before deleting the stored test results on the Fluke 1550B. Note Results data stored in the Meter can be deleted from the PC using the Quicklink application.

  • Page 26: Maintaining The Meter

    1550B Users Manual Maintaining the Meter Warning To avoid possible electric shock or personal injury, do not attempt to repair or service your Meter beyond what is described in this manual. Only qualified service personnel should service the product. There are no user-replaceable parts inside the Meter.
  • Page 27 AC Power Cord (S. Africa) 1552363 Soft Carrying Case 1642656 Infrared Cable Assembly 1578406 Users Manual CD 2099928 English Users Manual 2102980 Quick Reference Card 2099943 Table 3. 1550B Accessories Accessories Part No. Extended Test Lead Set, 25 feet (7.6 meters) 2032761...

  • Page 28: Specifications

    1550B Users Manual Specifications General Specifications Display 75 mm x 105 mm Power 12 V lead-acid rechargeable battery. Yuasa NP2.8-12 Charger Input (AC) 85 V to 250 V ac 50/60 Hz 20 VA This Class II (double insulated) instrument is supplied with a Class 1 (grounded) power cord.

  • Page 29: Electrical Specifications

    MegOhmMeter Specifications Electrical Specifications The meter’s accuracy is specified for 1 year after calibration at operating temperatures of 0 °C to 35 °C. For operating temperatures outside the range (−20 °C to 0 °C and 35 °C to 50 °C), add ± .25 % per °C, except on the 20 % bands add ±...

  • Page 30: Warranty In Other Languages

    à appliquer une garantie plus étendue ou différente au nom de Fluke. Le support de garantie est offert uniquement si le produit a été acquis par l’intermédiaire d’un point de vente agréé par Fluke ou bien si l’acheteur a payé le prix international applicable.
  • Page 31 GARANTÍA LIMITADA Y LIMITACIÓN DE RESPONSABILIDAD (Spanish) Se garantiza que todo producto de Fluke no tendrá defectos en los materiales ni en la mano de obra en condiciones normales de utilización y mantenimiento. El periodo de garantía es de 2 años y comienza en la fecha de despacho. Las piezas de repuesto, reparaciones y servicios son garantizados por 90 días.
  • Page 32 A Fluke garante que o software funcionará de acordo com as suas especificações técnicas pelo período de 90 dias, e que foi gravado de forma adequada em meio físico sem defeitos. A Fluke não garante que o software esteja livre de defeitos, nem que funcionará...
  • Page 33 BEPERKTE GARANTIE EN BEPERKING VAN AANSPRAKELIJKHEID (Dutch) Fluke garandeert voor elk van haar producten, dat het bij normaal gebruik en onderhoud vrij is van materiaal- en fabricagefouten. De garantieperiode bedraagt 2 jaar en gaat in op de datum van verzending. De garantie op onderdelen en op de reparatie en het onderhoud van producten geldt 90 dagen.
  • Page 34 Fluke garanterer ikke at programvaren er feilfri eller fungerer uten avbrudd. Autoriserte Fluke-forhandlere skal bare utvide denne garantien på nye og ubrukte produkter til forbrukere, men har ingen myndighet til å gi en mer omfattende eller forskjellig garanti på...
  • Page 35 MegOhmMeter Warranty in Other Languages Fluke Corporation Fluke Europe B.V. P.O. Box 9090 P.O. Box 1186 Everett, WA 98206-9090 NL-5602 BD Eindhoven Holland 11/99...
  • Page 36 1550B Users Manual...

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