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Summary of Contents for Supertester 680 R

Page 1: ...ad London NW1 Telegrams Selelectro London NWl manufactures Power factor meters Exposure meters lVlultilux r Self regulating instruments Large angle instruments 250 Relais lnstruments transformers Shun...

Page 2: ...lterations in or intetruptions of the variouscomponents t 51 Replacement of the galvanometer 56 Supplementary a ccessories 57 Spare parts 64 Colour codes of resistors and capa citors 65 Technician s r...

Page 3: ...ith a stabillty in absolute time that is four times above the normal precision resistors used in Test Meter analysers These alone put the Supertester 680 R above all other analysers manufactured up to...

Page 4: ...entally passing from one range to another To changn tnlr it is only necessary to move one probe terminal which in many cases is faster than rolaltr a switch and allowing the user to reflect on the typ...

Page 5: ...ife of the SUPERIESTER l C E Model 680 R carefully fottow all the maintenance instructi0ns 0n Page 36 ACSURACY OF THE READINE The accuracy or better the class of our Supertester 680 R is 1 in D C and...

Page 6: ...st be read ihrough the mirror scale as follows after cgnnecting the plugs t0 the circuit undor test the pointer nlust be given time to stop oscillating and when motionless on the resulting indication...

Page 7: ...to 200 from 0 to 50 from 0 to 10 from 0 to 200 x10 x10 x2 xl0 x 100 x10 100 50 10 100mV 2otmv lov 50v 200v 500v 1000v z ty 100y 00y 1000Y 2000 v For this last range due to the high voltage which is ve...

Page 8: ...r socket nF 9tl marked Ori loirio while the second socket to be used is the sarne used for the 5c pA and 100 mV ranges ln 0rder t0 get an accurate reading of the scale rvith referenc0 t0 the range and...

Page 9: ...Voltmetric AC Circuit 0 064Q 0 5769A 5 76A s7 60 6rRc 50v 10r 100y 20v Rt R2 1600rr Simplilied 2 and 4 Yolts AG Diagram showlng how to insert Su pertester 680 R t0 measurge C vol tage Diagram showlng...

Page 10: ...ure that with current measurements mA D c the black lead negative is inserted as faI as it will g0 into thc lower ceniral socket marked with the black wordin on a white ground D C and the other red on...

Page 11: ...nt must always he connected in seriqs with the cirouit t evcr 0onnect ths instrument iil arallel with the circuit live as done in the easB ol voltage measurements because the iesistances and shunts w0...

Page 12: ...IA Simplified crrrent AC Circuit Iliagram showing hou to insert Supertester 680 I for the current mea surements wlth Ac 9 R1 R2 1600r1 0 064Q o 76a a s 7 6 a l7t9a a slll a 5Ji0 a Sel ected range Sock...

Page 13: ...20 6 2r 28f 35 3 r 62 5 5 66 6 20 0 60 80 For tle battery replacement see the chapter dealing with mainienance page 3g Having completed the resistance tests never leave the terminals in position on th...

Page 14: ...s marked LOW O I SJx10 S r 100 Sl r 1C00 ln ihe model 680 R the reading can be made directly in the scale on the black arch located imr aiateti above the dB scaie Where a very a ccurate reading is req...

Page 15: ...sioufO be remembered ttrii tne ieadings taken on the scale must be multiplied by 10 000 REACTANCE DETEGTOR ln normal pratice it is often necessary to find out if there is any reactance in a circuit Fo...

Page 16: ...the left the knob marked REG mains control and introduce one 0f the i o into the lower centrar socket marked in o opi10i90v0 na tn ather prus in one 0f the upper s ckeis marked rglJr niJl loo accordi...

Page 17: ...gram how to check the capacitances trom 50 to 500 pF XPF rlE r il t l _l by means of the Ac mains 1000 20rt0 30C0 50C0 1tF i0000 Qo rypatison between the scale 0 50 and the dilterent capacitance value...

Page 18: ...ihe ranges 50 and 100 V A c itu Ofi reaaing will be that obse rved increased by 14 dB and 20 dB respectively with the 250 volt and 500 volt ranges A C add 28 dB and 34 dB respectively With the 1000 Vo...

Page 19: ...oil loudspeaker with an _approx 3 7 ohms impedance Therefor e to the ieading takei 0n a logarithmic table the logarithm of 188 is 2 274 thusz on the instrument must be added a certain factor represent...

Page 20: ...metel 100 100 x 100 1 0 000 w _ _ _2watts 5000 5000 5000 lf the above mentioned impedance instead of 5000 ohms is 7000 ohms we have 100 I00 x 100 1 0 000 W 1 42 watts 7000 7000 7000 If 0n the other h...

Page 21: ...breakdown and consequent dispalch of the instrument to ttre ipeiiiiisea iirm t for the requested repair A ln fact l c E and its retailers always keep a number of spare parts in stock which are sold a...

Page 22: ...batterv and ih ir i ttre nattery which is now tleir in its seat when replacins the batteryi matre suie lirat ttre potes are in the correct position bearins in mind that the bottom of itie ratt iv i t...

Page 23: ...the fuse has not blown llr lilse link may be checked for continuity using another chm meter or examined visually rr rrr1i a magnifying glass lf the fuse has failed it shculd be replaced with one of t...

Page 24: ...ill indicate a value of around 10 r0ll O li the needle 0f the faulty Tesi Meter does not move shortcircuii points 2 and I ilr l rcpeat the test on points 12 and 13 lf the reference Test Meter indicate...

Page 25: ...ption in Ox1 range and an overload on the galvanometer fcr the r r i l x 10 Ox 100 Ox 1000 An interruption in the 576O resistor causes an inter it tr il in the ranges flx 1 Ox 10 and an overload on th...

Page 26: ...l jli i i 1 1 relative to the ohms circu it whicti r i 6 ii uiiiiri a 46 t IIAGRAPH 6 l tlult in the Ampers circuit in 0 C see paragraph 2E 3A and 5 r nilAGIlAPtl 7 r trntts in the Ampere circuit in A...

Page 27: ...be caused by interruption or alteration of the additional serially r11 rl resistors which are the same as those composing the D C volimeier circuit You are r lvr r rl to check the circuit as per the i...

Page 28: ...Tl ALIERAIIONS R I IIERRUPTII N II I TIIE VAIlI US C MP NENTS Ilrr ollowing is a list of the various comp0nents with an indication of faults shown up by tlrr rI if their values go infinite interrupfio...

Page 29: ...0 V D C and 2500 V A C ranges Irr r rrrl of scale reading for the 1000 V D C range is the same aS that f0r the 500 V D C I 1rlrllr rnulrY vA uE 0 064 o rr rlierrupied ttre needte of the Test Meter goe...

Page 30: ...range which just reaches tO of ttre end oiscate FAUTTY VATUE 5 6 I O SEMI FIXED 2 2 I RHEOSIAT rr tnterrupted no reading for all A c ranges It shortcircuited no reading for all the A d ranges tAUtIY V...

Page 31: ...he contacts in the rest position i e with0rjt probes I I I IIillENT RY ACCESS RIES T BE IJSED WITI I lUR SUPERTESTER 680 llr ll 0se accessories l C E has widened the ranges of tests and measurements t...

Page 32: ...lLure co efficient The system is set 0r dlroct use wiih the Test Meter Models 680 rr ilr probe there is a 1 Mohm resistance 2 silicone diodes with a very high reverse voltage rr lr v0ltage polyester c...

Page 33: ...ts exceilent design mechanicar construction and speciar circuit make it extremery rituniu to e ruriionur prr po r ln the design of this instrument as for the superiester 6g0 R l c E has aimed for abso...

Page 34: ...g through the resistor under test is amptified by a factor of 100 000 and applied to the 680 metering circuit s2 ffi 6tffi ry 1 eeddxf J J J r iri r I C E TRA ISFORMER M O 616 ioJ a rlpere measurernen...

Page 35: ...ted crocodile clamps indicate either red or black Bridge for L0 i C lnstruction manual Antistatic solution to remove electrostatic charges from ihe panel 0ne dose 64 t tII UR C DE FttR RESIST RS AND C...

Page 36: ...cr irient Ampere abs0rbed by a phase by 1 73xcos fi IIIUE F TilE VOTIAGES AI II SII USOIqAL GUNREilTS l t_ 1R t of Current in The total_resjstive value R total resistance of a certain number of resis...

Page 37: ...This guarantee replaces any other expressely stated or implled or any rrr ol ligati0n or responsability l C E lndustria Costruzioni Elettromeccaniche does not Iilr 0r auth0rise third parties to assume...

Page 38: ...lterations in or intetruptions of the variouscomponents t 51 Replacement of the galvanometer 56 Supplementary a ccessories 57 Spare parts 64 Colour codes of resistors and capa citors 65 Technician s r...

Page 39: ...mA 5mA l0 mA ELECTRICAL CIRCUIT OF THE SUPERTESTER 680 R fi PRINTED lN BIACK Diagram showing the l0cation 0f the various c0mp0nents under the printed circuit board see illustration 0n page 40 PnlNTEt...

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