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Summary of Contents for Fluke 1520
- Page 1 ® 1520 MegOhmMeter Users Manual September 2000 Rev.2, 2/03 © 2000-2003 Fluke Corporation. All rights reserved. Printed in USA All product names are trademarks of their respective companies.
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Page 3: Table Of Contents
Table of Contents Title Page Unpacking the Meter..................1 Safety Information and Symbols ............... 3 Key functions ....................6 Display ......................8 Using the Meter ....................10 Connecting to the Circuit Under Test ............10 Auto-Shut-Off ....................12 Measuring Insulation Resistance ..............12 Measuring Low Resistance ................ - Page 5 List of Tables Table Title Page Key and Switch Descriptions..............6 Display Description ................... 8 List of Figures Figure Title Page Shipment Content ..................2 Display ...................... 9 Connecting to the Circuit Under Test ............11 Display Example ..................19 Replacing the Batteries.
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Page 6: Unpacking The Meter
Fluke 1520 Unpacking the Meter The Fluke Model 1520 MegOhmMeter (hereafter, “the meter”) is a handheld instrument designed primarily to make resistance/insulation resistance measurements. The MegOhmMeter includes the following items, see Figure 1: 2 test leads, red and black, 1.5 m... -
Page 7: Shipment Content
Fluke 1520 Users Manual acf02f.eps Figure 1. Shipment Content... -
Page 8: Safety Information And Symbols
MegOhmMeter Safety Information and Symbols Safety Information and Symbols A Caution identifies conditions and actions that may damage the Meter. A Warning identifies conditions and actions that pose hazard(s) to the user. International symbols on the Meter and in the manual are explained below. Risk of electric shock Earth See manual... - Page 9 Fluke 1520 Users Manual Safety Information Use of instrument in a manner not specified by the manufacturer may impair safety features/protection provided by the equipment. Read the following safety information carefully before using or servicing the instrument. To avoid electric shock or fire, do the following: Avoid working alone.
- Page 10 Do not use the Meter if the battery indicator ( ) shows a battery empty condition. Use only Fluke recommended batteries and fuse. Do not use the Meter with any parts or cover removed. Do not use the Meter around explosive gas, vapor or dust.
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Page 11: Key Functions
Fluke 1520 Users Manual Key functions Table 1. Key and Switch Descriptions Rotary switch To select a measurement function. Used for the Insulation Resistance and Low Resistance test functions. Press and hold this button until the main reading is stable. - Page 12 MegOhmMeter Key functions Table 1 (continued) Resistance Beeper function Turns the Beeper function ON and OFF. When ON, the R icon appears on the display and the Meter beeps at short circuit. Low Resistance function Turns the test lead resistance compensation ON. icon appears on the display.
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Page 13: Display
Fluke 1520 Users Manual Display Table 2 and Figure 2 describe the display. Table 2. Display Description Voltage applied to the probes in Insulation Resistance function. Low Resistance/Resistance function indicator. Resistance reading held from the last measurement in Insulation Resistance or Low Resistance function. -
Page 14: Display
MegOhmMeter Key functions acf12f.eps Figure 2. Display... -
Page 15: Using The Meter
Fluke 1520 Users Manual Using the Meter Connecting to the Circuit Under Test Figure 3 shows the proper connections. Warning To prevent electric shock when performing resistance tests, remove all power from the circuit to be measured. Warning To prevent electric shock, first connect the test leads to the Meter inputs... -
Page 16: Connecting To The Circuit Under Test
MegOhmMeter Using the Meter acf04f.eps Figure 3. Connecting to the Circuit Under Test... -
Page 17: Auto-Shut-Off
Fluke 1520 Users Manual Auto-Shut-Off The Meter automatically turns off after 15 minutes of non-use. In Lo Ohms mode, the meter turns off after 5 minutes of non-use. To turn the meter back on, turn the rotary switch to OFF, then to the desired function. - Page 18 MegOhmMeter Using the Meter To measure insulation resistance, do the following: Select the test voltage. Connect the probes to the circuit to be measured. The meter automatically detects if the circuit is energized, and displays the detected voltage. Warning A repetitive beep and the flashing high voltage symbol ( warn the user if voltage more than 30 V ac or dc is present.
- Page 19 Fluke 1520 Users Manual The Meter beeps when the reading is stable. The upper right display shows the same resistance reading as the main display. When resistance is higher than the maximum display range, the meter reacts as follows: If the 250V range is selected, the display reads >1000 M .
- Page 20 MegOhmMeter Using the Meter Using the LOCK Function to Measure Insulation Resistance The LOCK function holds the test voltage on the probes. Use LOCK to make long duration measurements without having to push and hold the TEST button. To use the LOCK function: Press the TEST button, then press the LOCK button, and then release both simultaneously.
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Page 21: Measuring Low Resistance
Fluke 1520 Users Manual Measuring Low Resistance To measure low resistance: Zero out the test lead resistance (see Table 1). Connect the probes to the circuit to be measured. If voltage is present on the probes, the voltage is displayed. - Page 22 MegOhmMeter Using the Meter Exchange the red (+) and black (-) probes on the circuit and repeat steps 3 and 4 to reverse the polarity of the test current. The reading should be the same as the previous. This test is useful to detect corroded connections, which can cause different readings for both polarities.
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Page 23: Measuring Resistance
Fluke 1520 Users Manual Measuring Resistance Connect the probes to the circuit to be measured. Measure voltage first to ensure that no hazardous voltage is present, then switch to Ohms. If the resistance is approximately 30 or less, the Meter beeps. -
Page 24: Checking The Battery
MegOhmMeter Using the Meter Checking the Battery This function tests the battery under simulated load per EN61557. Disconnect all test leads from any circuit. acf09f.eps Full Empty 100% - Full 0% - Empty acf13f.eps Figure 4. Display Example... -
Page 25: Maintaining The Meter
Fluke 1520 Users Manual Maintaining the Meter This section provides basic maintenance information, including fuse and battery replacement instructions. Caution Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information. -
Page 26: Replacing And Disposing Of The Batteries
This Meter contains alkaline batteries. Do not dispose of these batteries with other solid waste. Used batteries should be disposed of by a qualified recycler or hazardous materials handler. Contact your authorized Fluke Service center for recycling information. The Meter uses four alkaline C cell batteries (supplied). To replace the batteries, do the following (see Figure 5): Turn the rotary switch to the OFF position. - Page 27 Fluke 1520 Users Manual Place the Meter face down on a nonabrasive surface and loosen the two screws with a flat-blade screwdriver. Lift the battery access lid away from the Meter. Replace the C cells as shown in Figure 5. Observe the battery polarity shown in the battery compartment.
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Page 28: Replacing The Batteries
MegOhmMeter Maintaining the Meter acf10f.eps Figure 5. Replacing the Batteries. -
Page 29: Testing And Replacing The Fuse
To avoid electric shock, disconnect the test leads from the inputs before opening the Meter for fuse replacement. To prevent personal injury or damage to the Meter, install ONLY Fluke specified fuse identified in the “Replacement Parts and Optional Accessories” section. - Page 30 MegOhmMeter Maintaining the Meter Replacing the Fuse Warning To avoid electric shock, personal injury or damage to the Meter, use ONLY the specified fuse, and in accordance with the following procedure. If the previous fuse test indicates that the fuse is defective (resistance > 40 ), replace the fuse as follows: Turn the rotary switch to the OFF position.
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Page 31: Replacing The Fuse
Fluke 1520 Users Manual acf11f.eps Figure 6. Replacing the Fuse... -
Page 32: Replacement Parts And Optional Accessories
MegOhmMeter Replacement Parts and Optional Accessories Replacement Parts and Optional Accessories Replacement Part Part Number Battery 1.5 V Alkaline Size C 423582 Test Lead set 669058 Test Probe, 1 kV, lantern tip, red 803459 Test Probe, 1 kV, lantern tip, black 803467 Alligator Clip, red 803434... -
Page 33: Principle Of Measurement For Resistance
(Ohm’s Law) Service Centers To locate an authorized service center, visit us on the World Wide Web: www.fluke.com or call Fluke using any of the phone numbers listed below: USA: 1-888-99-FLUKE (1-888-993-5853) Canada: 1-800-36-FLUKE (1-800-363-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181... -
Page 34: Specifications
MegOhmMeter Specifications Specifications Environmental Operating Temperature -10 C to +50 C Storage Temperature -40 C to +70 C Temperature Coefficient 0.10 x (specified accuracy)/ C (< 18 C or > 28 C) Relative Humidity: Non condensing (< 10 C) 90 % RH (10 C to 30 C) 75 % RH (30 C to 40 C) 45 % RH (40 C to 50 C)(Without Condensation) Dust/water resistance... - Page 35 Fluke 1520 Users Manual Mechanical Specifications Size 23,4 x 10 x 6,4 cm (9.2 x 3.9 x 2.5 in) Weight 1 kg (2.2 lbs.) Drop requirement Per IEC 1010-1 Shock and Conforms to MIL-PREF-28800F class 3 & 4 Vibration Safety Specifications...
- Page 36 MegOhmMeter Specifications Electrical Specifications Battery C Size 1.5 V alkaline, ANSI/NEDA-14A, IEC- LR14 (4 pieces) Fuse 6 mm x 32 mm (0.25 x 1.25 inch), 0.5 A 660 V, Fast Acting, 50 A Minimum Interrupt rating Insulation Resistance Display Ranges 4.000 M , 40.00 M , 400.0 M , 4000 M Measurement Range (per EN61557-2) 0.250 M to 4000 M...
- Page 37 Fluke 1520 Users Manual Test Voltages 250 V, 500 V, 1000 V Accuracy +20 %, -0 % Nominal Current 1 mA Number of measurements 5,000 Circuitry Protection test inhibited if 30 V ac or dc at inputs Display Range 40.00 Measurement Range 0.10...
- Page 38 MegOhmMeter Specifications Voltage Range 600 V, dc, 50/60 Hz Resolution Accuracy 2 % + 2 counts Analog Bar Graph 0 to 1000 V Resistance Range 4000 Accuracy 2 % + 2 counts Resolution Analog Bar Graph 0 to 10 k Beeper On at 30 or less...
- Page 39 90 days. This warranty extends only to the original buyer or end- user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Fluke’s opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation or handling.
- Page 40 THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
- Page 41 Fluke 1520 Users Manual...
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