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Summary of Contents for Fluke 1550
- Page 1 ® 1550 MegOhmMeter Users Manual October 2001 (English) © 2001 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...
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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 1550 Users Manual...
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Page 5: List Of Tables
Power Supply Connections ............7 Surface Leakage Current ............9 Guard Terminal Connection ............. 10 Improved Guard Terminal Connection ........10 Connecting to the Circuit Under Test ........11 IR Port on 1550 MegOhmMeter ..........19 Replacing the Guard Fuse ............22... - Page 6 1550 Users Manual Cover Terminals Safety Shutter Display (LCD) IR Port Pushbuttons Latch Handle ADB16F.EPS Fluke 1550 MegOhmMeter...
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Page 7: Introduction
MegOhm Users Manual Introduction The Fluke 1550 MegOhmMeter (hereafter "the Meter") is a high voltage insulation tester that tests general circuits, including switchgear and cables. The Meter has the following features: ⇒ Four test voltage settings: 500 V, 1000 V, 2500 V, and 5000 V ⇒... -
Page 8: Unpacking The Meter
1550 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. ADB01F.EPS Item Description Users Manual (English, French, German, Spanish) -
Page 9: Safety Information
• Disconnect the test leads from the circuit under test and from the Meter before changing the fuse. • Use only Fluke approved replacement fuse(s), 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
1550 Users Manual Symbols Symbols on the Meter and in the manual are explained Table 1. Table 1. Symbols Conforms to European Union standards. Underwriter’ Laboratories, Inc. TÜV Product Services. Technischer Überwachungs Verein. Conforms to Canadian Standards Association requirements. Risk of danger. -
Page 11: Using The Pushbuttons
1550 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. SCROLL ENTER FUNC. DOWN TEST ADB02F.EPS Item Button Description Turns the Meter off and on. -
Page 12: Understanding The Display
1550 Users Manual Understanding the Display Display annunciators are shown and described in Figure 3. 5000V 2500V 000V 500V ADB03F.EPS Item Description Interference present. Displayed readings may be outside the specified accuracy range. Blown Guard fuse indicator. Electrical breakdown in Ramp mode. -
Page 13: Charging The Battery
Spent batteries should be disposed of by a qualified recycler or hazardous materials handler. Contact your authorized Fluke Service Center for disposal and recycling information. The Meter is powered by a rechargeable 12 V lead-acid battery. You can recharge the battery using the AC power cord or the DC charger leads that are shipped with the Meter. - Page 14 1550 Users Manual To recharge the battery using an AC power supply: Turn the Meter off. Disconnect the test leads and/or any connectors from the Meter. Rotate the safety shutter toward the top of the Meter to expose the power supply connections.
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Page 15: Using The Guard Terminal
1550 MegOhmMeter Operating the Meter 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 16 1550 Users Manual 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.
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Page 17: Making Measurements
1550 MegOhmMeter Making Measurements 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 18: Setting The Test Voltage
1550 Users Manual Setting the Test Voltage To set the test voltage: Press to turn on the Meter. The Meter will be in TEST VOLTAGE mode with a 500 V default test voltage. Test Voltage Display 500V ADB05F.EPS Press to scroll through the test voltage options (500 V, 1000 V, 2500 V, and 5000 V). -
Page 19: Performing An Insulation Test
1550 MegOhmMeter Making Measurements Performing an Insulation Test Warning Measuring insulation resistance requires the application of potentially dangerous voltages to the circuit. This may include exposed bonded metalwork. 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 20 1550 Users Manual The Meter beeps 3 times as the test begins and the icon flashes on the display indicating potentially hazardous voltages may be present on the test terminals. 5000V 2500V 000V 500V Bar Graph Digital Main Display ADB08F.EPS The digital display indicates the measured insulation resistance after the circuit has stabilized.
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Page 21: Performing A Ramp Test
1550 MegOhmMeter Making Measurements Performing a Ramp Test The Ramp test is an automated test that checks the insulation for a breakdown. During a Ramp test, the output voltage starts at 0 V and increases linearly until it reaches the specified test voltage (500 V, 1000 V, 2500 V, or 5000 V) or until a sudden drop in measured resistance) is detected. - Page 22 1550 Users Manual to toggle the Ramp test option on. A blinking s appears in the Press upper left-hand corner of the display if selected. Press to toggle the Ramp test option off. Press for one second to start the Ramp test.
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Page 23: Making A Timed Test
1550 MegOhmMeter Making Measurements Making a Timed Test You can program the Meter to make tests that run for a set time at a set voltage. The time can be set in 1 minute increments to 99 minutes. During a timed test, the time limit appears on the right bottom of the display. -
Page 24: Viewing Results Stored In Memory
1550 Users Manual Viewing Results Stored in Memory The Meter can store 99 sets of test data, including: ⇒ Limit – timer on or off ⇒ Timer reading at termination of test ⇒ Capacitance ⇒ Ramp on or off ⇒ Selected test voltage and measured test voltage ⇒... -
Page 25: Downloading Your Test Results
You can use the download function to download all of your stored test data to a PC using the IR (infrared) port. An infrared adapter is supplied with the Fluke 1550 MegOhm Meter and is used to download stored test data from the Meter to a PC. Figure 9 shows the location of the IR port on the Meter. -
Page 26: Installing The Quicklink Software
The download dialog shows the progress of the download as test results are received on the 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 1550. -
Page 27: Deleting Your Test Results
1550 MegOhmMeter Maintaining the Meter Deleting Your Test Results To delete all of your saved test results: Press to turn on the Meter. to select the RESULTS function. Press Press to access the stored test results. two times to access the DELETE? function. -
Page 28: Replacing The Guard Fuse
1550 Users Manual Replacing the Guard Fuse W Replace the Guard fuse with a HBC 100 mA, 250 V, Type F (Fast) fuse. Warning To avoid electric shock, personal injury or damage to the Meter: • Replace the fuse in accordance with the following procedure, using ONLY the replacement fuse specified in this manual. -
Page 29: Principle Of Measurement And Resistance
Guard Fuse, 100 mA, 250 V, Type F (Fast) to IEC127 1642663 DC Charger Lead 1642695 Charger Fuse, 5 A, 1.5-in x 0.25-in quick blow (Fast) fuse 1643479 Infrared Adapter 1642688 Quicklink 1550 Communication Software 1642674 Users Manual (English, French, German, Spanish) 1642871... -
Page 30: Specifications
1550 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 50 VA Charger Input (DC) 10 to 15 V dc, 30 VA... -
Page 31: Electrical Specifications
1550 MegOhmMeter Specifications Electrical Specifications Accuracy is specified for 1 year after calibration at operating temperatures of 0 °C to 35 °C. For operating temperatures between –20 °C to 0 °C and 35 °C to 40 °C, these tolerances double. - Page 32 1550 Users Manual...