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Septemb er 2000 Rev.2, 2/03 © 2 0 00 - 2 0 0 3 F l u k e C or p o r at i o n. A ll r i g hts re s er v ed . P r i n te d i n U S A All produc t nam es are tradem arks of their respec tive c ompanies . ® 1520 MegOhm Meter Users Manual ...
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i Table of Contents Title Page Unp acking the Me ter......................................................................................... 1 Safe ty Info rmatio n and S ymbo ls ....................................................................... 3 Key functio ns ................................................................................. ...
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ii ...
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ii List of Tables Table Title Page 1. Key and S witch Descrip tions ..................................................................... 6 2. Di spl ay Descr ipti on ................................................................................... 8 List of Figures Figure Title Page 1. Ship ment Co nten t ........................................ ...
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1 Fluke 1520 Unpacking the Meter The Fluke Mode l 15 20 Meg OhmM eter (h erea fter, “th e me ter”) is a handheld instr ument designe d prim aril y to make resi stan ce/ ins ul ation r esista nce measur eme nts. The MegOhmMet er incl udes the f ollowi ng i tems, se e Figure 1: • 2 test leads, red and bl ack, 1. 5 m • 2 test probe s, r ed and ...
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Fluke 1520 Users Manual 2 acf02f. eps Figure 1. Shipme nt Cont ent ...
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MegOhmMeter Safety I nform at ion and S ymbols 3 Safety Information and Symbols A Cauti on identif ies co ndi tion s and act ion s t hat may dam age th e Met er. A Warning identi f ies con di tions a nd act ions that pose h az ard( s) to t he user. I nter nat ional sym bols on the Meter and i n the manual are expl ained b elow. Y Risk of elect ric ...
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Fluke 1520 Users Manual 4 Safe ty Info rmatio n Use of inst r ument i n a manner not specif ied by t he ma nufact ur er may im pai r safety f eat ures/ pr otecti on provid ed by the eq uipment. Read t h e f ollowi ng safety infor mation car efull y befor e usi ng or servi cing the i nstru ment . To avoid el ectri c shock or f i re, do the f ol lowi ...
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MegOhmMeter Safety I nform at ion and S ymbols 5 Safe ty Info rmatio n (co nt.) • Place test l ead s in pr oper input term i nals. • Disconnect t he live t est lead bef ore di sc onnect ing the neut ral t est lead. • Do n ot us e th e Me ter if the batte ry ind icato r ( ) shows a battery empty condition. • Use only Fluke r ecommend ed batt ...
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Fluke 1520 Users Manual 6 Key functions Table 1. Key and Switch Descriptions Rotary switch To select a measurement function. Used for the Insul ati on Resist ance and Low Resistance test funct i ons . Press and hold this button until the main readi ng is stable. Locks the test i n Insul at ion Resistance or Low Resistanc e function. To lock: press ...
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MegOhmMeter Key functi o ns 7 Table 1 (cont inued) Resistance Beeper function Turns the Beeper function ON and OFF. When ON, the icon appears on the display and t he Meter beeps at short circ uit. Low Resistance function Turns the test lead resistanc e compensation ON. The icon appears on the display. To compensate, t o uch the probe tips together, ...
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Fluke 1520 Users Manual 8 Display Table 2 and Fi gure 2 de scri be the di splay. Table 2. Display Description 1 Voltage appli ed to the probes in Insulat i on Resistanc e funct i on. 2 Low Resistanc e/Resistanc e funct i on indic ator. 3 Resistanc e reading held from the last measurement in Ins ul ati on Resist ance or Low Resistanc e function. 4 B ...
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MegOhmMeter Key functi o ns 9 1 3 2 6 7 9 10 8 4 5 acf12f. eps Figure 2. D isplay ...
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Fluke 1520 Users Manual 10 Using the Meter Connecting to the Circuit Under Test Figure 3 sh ows the pr oper co nne cti on s. Warning To prevent electr ic shock wh en per form i ng resist ance t est s, remove al l power fr om t he circui t to be measured. Warning To prevent electr ic shock, f irst connect the t est leads t o the Met er inputs before ...
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MegOhmMeter Using the Met er 11 acf04f. eps Figure 3. Connect ing to the C ircuit Under Test ...
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Fluke 1520 Users Manual 12 Auto-Shut-Off The Meter aut om ati cal ly tur ns off af t er 15 minut es of non- use. I n Lo Ohms mode, t he meter turns of f aft er 5 minut es of non- us e. To t ur n the met er back on, t urn t he r otar y swi tch to OFF, then t o t he desi r ed funct i on. Measuring Insul ation Resistance Warning • Measuring ins ulat ...
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MegOhmMeter Using the Met er 13 To measure i nsulat ion r esi sta nce, do t he f ollowi ng: 1. Select t he t est volt age. 2. Connect t he prob es t o the cir cuit t o be measur e d. The meter aut omat i cally det ect s i f t he ci rcuit is energi zed, and displ ays the det ect ed volt age. Warning A repeti t ive beep and the f lashin g high vol t ...
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Fluke 1520 Users Manual 14 The Meter be eps whe n the readi ng is st able. Th e upper right display s hows t he same resist anc e readi ng as th e main di spl ay. When resist anc e i s higher t ha n the maximum di spla y range, t he meter r eacts as follows : • I f the 250V r ange i s sel ecte d, the displ ay r eads >1 000 M Ω . • I f the ...
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MegOhmMeter Using the Met er 15 Using the LOCK Functi on to Measure I nsulation R esistance The LOCK funct ion hol ds th e t est volt age on the pr obes. Use LOCK to make l ong durat ion measurement s wi t hout ha vi ng to pus h a nd hol d the TEST but ton. To use the LOCK f un ction: 1. Press the TE ST butt o n, t hen pr ess t he LOCK butt on, and ...
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Fluke 1520 Users Manual 16 Measuring Low Resistance To measure l ow r esista nce: 1. Zero out t he test l ead re si stan ce ( see Tabl e 1) . 2. Connect t he prob es t o the cir cuit t o be measur e d. If vol t age is pr ese nt on t he pr obes, t he vol t age is dis play ed. Warning A repeti t ive beep and the f lashin g high vol t age symbol ( ) w ...
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MegOhmMeter Using the Met er 17 5. Exchange t he red ( +) and bl ack (-) pr obes on the cir cuit and r epeat steps 3 an d 4 to reverse t he polar it y of the test curr ent . The r eadi ng sh ould be t he same as t he previou s. This t est is us eful t o detect cor rod ed conn ect ion s, which c an c ause di ffer ent reading s for bot h polar i ties ...
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Fluke 1520 Users Manual 18 Measuring Resist ance 1. Connect t he prob es t o the cir cuit t o be measur e d. Measure vol tag e f irst to ensur e t hat no ha zar dous v oltage i s present , then swi t ch to Ohms. 2. If t he r esist ance i s appr oxi mately 30 Ω or less, the Meter beeps. To t urn off the bee per , pr ess t he bee per butt on. I f t ...
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MegOhmMeter Using the Met er 19 Checking the B attery This funct i on t est s the b at ter y und er si mul ated loa d per EN61557. Di scon nect all t est lead s fr om any circui t. acf09f. eps Fu ll Em pty Em pty 100% - Full 0% - acf13f. eps Figure 4. Display Example ...
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Fluke 1520 Users Manual 20 Maintaining the Met er This sect ion provi des b asi c mai nten anc e inf or mati on, incl uding f use and b atter y replacem ent i nst ruct i ons. Caution Do not att empt to r epai r or service your Meter unl ess you ar e qu ali f ied to do so and have the r elevant calibr ation, perfo r mance test , and ser vi ce inform ...
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MegOhmMeter Maintaini ng the Meter 21 Replacing and Dispo sing of the Batteries Warning To avoid ele ctri c shock, dis connect t he test l eads fr om t he inputs bef ore opening the Met er for bat tery r eplacement. To avoid fal se r eadi ngs, which coul d lead to po ssibl e el ect r ic shock or personal injur y, repl ace the batt eries as soo n as ...
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Fluke 1520 Users Manual 22 4. Place the Met er f ace down on a n onabr asi ve sur face an d loos en the two s crews wi th a flat - blade scr ewdr iv er . 5. Lift t he batter y access li d away fr om the Meter . 6. Replace t he C cells a s shown i n Fi gur e 5. Observ e the batt ery p ol arit y shown i n the batter y comp artment . 7. Secure th e ba ...
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MegOhmMeter Maintaini ng the Meter 23 acf10f. eps Figure 5. R eplacing t he Batteries. ...
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Fluke 1520 Users Manual 24 Testing and R eplacing the Fu se Warning To avoid ele ctri c shock, dis connect t he test l eads fr om t he inputs bef ore opening the Met er for f use replacem ent. To prevent personal i njury or damage t o t he Meter, inst al l ONLY Fluke specifi ed f use ide nt if i ed in the “Repl acement Parts and Opt ional Accesso ...
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MegOhmMeter Maintaini ng the Meter 25 Replacin g the Fuse Warning To avoid ele ctri c shock, pers onal inj ury or damag e to t he Meter, use ONLY the specif i ed fuse, an d in accor d ance wi th the f ollowi ng procedur e. If t he pr evious f us e test i ndicates t hat t he fuse i s d efect i ve (r esi sta nce > 40 Ω ), r epl ace the fuse as f ...
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Fluke 1520 Users Manual 26 acf11f. eps Figure 6. Re placing the F use ...
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MegOhmMeter Replacement Par ts an d Opt ional Ac cessor i es 27 Replacement Pa rts and Optional Accessor ies Replacement Part Part Number Battery 1.5 V Alk aline Size C 423582 Test Lead set 669058 Test Probe, 1 kV, lantern tip, red 803459 Test Probe, 1 kV, lantern tip, bl ack 803467 Alligat or Clip, red 803434 Alligat or Clip, black 803442 Carrying ...
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Fluke 1520 Users Manual 28 Principle of Me asurement f or Resistan ce The Meter mea sure s r esist an ce by i ndu cing a c urrent in t he ci rcuit under t est , meas ur ing the resul t ant pot e nti al acros s t he cir cui t, and t hen cal c ulat i ng the resi sta nc e of t he circui t. The resist a nce i s then est abli she d by per form i ng the ...
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MegOhmMeter Specifi cation s 29 Specifications Environmental Operating Temperat ure -10 ° C to +50 ° C Storage Temperature -40 ° C to +70 ° C Temperature Coeffi c ient 0.10 x (specifi ed acc uracy)/ ° C (< 18 ° C or > 28 ° C) Relative Hu midity : Non condensing (< 10 ° C) 90 % RH (10 ° C to 3 0 ° C) 75 % RH (30 ° C to 4 0 ° C) ...
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Fluke 1520 Users Manual 30 Mechanical Specifi cations 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 Vibration Conf orms t o MIL-PRE F-28800F class 3 & 4 Safety Specifications Electri c al Safety Meets all requirem ents of EN61010-1, 1995 and EN61557, 1997 Maximu m Operating Voltage ...
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MegOhmMeter Specifi cation s 31 Electrical Speci fications Batter y C Size 1.5 V al kaline , AN SI/N EDA-1 4A, IEC - LR14 (4 pieces) Fuse 6 mm x 32 mm (0.25 x 1.25 inch), 0.5 A 660 V, Fast A cting , 50 A Min imum Inte rru pt ratin g Insulation Resistance Display Ranges 4.000 M Ω , 40.00 M Ω , 400.0 M Ω , 4 0 00 M Ω Measurement Range (per E ...
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Fluke 1520 Users Manual 32 Test Voltages 250 V, 500 V, 1000 V Accuracy +20 %, -0 % Nominal Current 1 mA Number of measurements 5,000 Circuit ry Prot ect ion test inhi bit ed if ≥ 30 V ac or dc at inputs Lo Ω Display Range 40.00 Ω Measurement Range 0.10 Ω to 40.00 Ω Accuracy 2 % + 2 counts Resoluti on 0.01 Ω Analog Bar Graph 0 to 100 Ω ...
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MegOhmMeter Specifi cation s 33 Voltage Range 600 V, dc, 50/60 Hz Resoluti on 1 V Accuracy 2 % + 2 counts Analog Bar Graph 0 to 1000 V Resistance Range 4000 Ω Accuracy 2 % + 2 counts Resoluti on 1 Ω Analog Bar Graph 0 to 10 k Ω Beeper On at ≈ 30 Ω or l ess ...
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Fluke 1520 Users Manual 34 Limited War ranty & Li mitation of Liabi lity Each Fluke produ ct is w arranted to be free from defe cts in mat erial an d workma nship und er norm al use and service . The warrant y period is three years an d begin s on t he da te of shipm ent. Par ts, pr oduct repairs and services are warranted for 90 days. Thi s wa ...
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MegOhmMeter Specifi cation s 35 the Buyer transport ation prep aid and the Bu yer will be bi lled for the repair and return t ransporta tion charges (F OB Ship ping P oint). 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 MERCHANTA ...
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Fluke 1520 Users Manual 36 ...
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