Biddle OTS60PB_UG 电路图.pdf

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1、M OTS 60PB Oil Test Set USER USER GUIDE DE IUTILISATEUR GEBRAUCHSANLEITUNG RadioFans.CN 收音机爱 好者资料库 Contents 1 Safety Warnings2 General Description3 Applications5 Specifi cation6 Accessories7 Operation8 Warnings8 Precautions8 Preparing the test vessel and electrodes9 Loading the test vessel9 Preparin

2、g the oil test set10 Options, Display Contrast, Language Select, View Last Results, Pass/Fail Setup Error Monitoring Automatic testing sequences11 5 minute test, AS 1767, BS 148, BS 5874, CEI 10-1, OCT 6581, IEC 156, IP 295, NFC 27, SABS 555, UNE 21 AND VDE 0370 tests. ASTM D877, ASTM D1816 Withstan

3、d (Proof) Tests16 BS 5730a Withstand (Proof) Test A Withstand (Proof) Test B Self check tests: checks for major safety and functional parts19 Fuse replacement19 Printing20 Sampling and Testing Oil for Dielectric Strength22 Causes of Bad Oil, Appearance of the Sample, Cleanliness of the Apparatus, Pr

4、ecautions Necessary During Sampling Repair and Warranty23 Illustrations Figure 1OTS 60PB oil test set layout4 Figure 2Oil test set controls etc.4 Figure 3Oil test set rear panel4 Figure 4Example menu screen10 Figure 5Example initial stand time screen12 Figure 6Example voltage screen12 Figure 7Exampl

5、e stirring screen12 Figure 8Example intermediate stand time screen13 Figure 9Example average breakdown voltage screen13 Figure 10Example pass screen13 Figure 11Example of electrode gap selection screen16 Figure 12Example of display for starting BS 5730a Proof Test16 Figure 13aExamples of BS 5730a Re

6、sult Screen17 Figure 13bExamples of BS 5730a Result Screen17 Figure 14Example of display for setting the proof test voltage level18 Figure 15Example of options in the proof test18 RadioFans.CN 收音机爱 好者资料库 2 NOTE THIS TEST SET MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSONS. Symbols used o

7、n the Test Set Caution: Refer to accompanying notes. Risk of electric shock. Equipment complies with relevant EU Directives Earth terminal SAFETY WARNINGS Safety Warnings and Precautions must be read and understood before the OTS 60PB is used. They must be observed during use The OTS 60PB must only

8、be used in the way intended and for the stated purposes described by Megger Limited. The OTS 60PB must not be used if any part of it is damaged. The OTS 60PB must not be used immersed or with rain falling on it. The OTS 60PB must only be used for testing electrical grades of insulating liquids. No o

9、ther objects or substances animal, vegetable or mineral should be placed in the test chamber. The OTS 60PB must only be used with the recommended and supplied test vessel. The vessel must be present when any test sequence is initiated. Before adjusting the electrode gap, the test set must be de-ener

10、gized from the rear switch. The OTS 60PB must only be used with the battery charger supplied. A proprietary mains plug must be used and the supply protected using isolation by disconnection devices, i.e. fuses and/or circuit breakers. The maximum rating of these fuses or circuit breakers should be 5

11、 A. The charger must not be used when damaged, immersed or with rain falling on it. Replacement fuses must be of the correct type and rating. The vehicle lead set must only be powered from a 12 V nominal source, negative to vehicle metalwork, using only the fused connector and Lead Set available as

12、an accessory. Adjustment or repair must only be carried out by a qualifi ed instrument technician who is aware of and takes precautions from the hazards involved while working on high voltage equipment. Capacitors inside the test set may still be charged even if the apparatus has been disconnected f

13、rom the supply (especially under fault conditions). The work must only be carried out by the manufacturer or one of his approved agents. Refer also to page 8 for further Warnings, explanations and Precautions. RadioFans.CN 收音机爱 好者资料库 General Description 3 The OTS 60PB is a 0 60 kV, battery powered p

14、ortable dielectric strength oil test set. Its size and weight make it suitable for on-site assessment of insulating oil quality. The dielectric strength test it performs is an important deciding factor in knowing whether to retain or replace the oil. Breakdown voltage is measured, averaged and displ

15、ayed under the control of built-in programme sequences. Go/no-go testing is available. The OTS 60PB is self contained in an ever-ready carry bag complete with its accessories; four vessels with lids, a mains powered battery charger, a 12 V vehicle lead set and a gap gauge for electrode spacing. Sphe

16、rical electrodes of 12.7mm diameter are fi tted as standard with options for mushroom or cylindrical electrodes. The instrument is housed within a metal case which forms an equipotential enclosure for the high and low voltage circuits. An access door allows loading of the oil sample to be tested and

17、 is safety interlocked with two forced break switches to BS 5304. The action of pulling down the access door to the horizontal position raises the test electrodes and stirrer to allow, easy, slide in loading of the fi lled oil vessel. The oil vessels are transparent and heat resistant to 180 C. An o

18、ptional close fi tting lid is available to prevent contaminants from entering the vessel after cleaning and fi lling. See Accessories. The working surfaces in the oil testing area are all easily wiped clean from oil spills or contamination. The OTS 60PB is fully portable with its own rechargeable ba

19、ttery built-in. The display carries a reminder to top up the battery charge every six months. The nominal running time for continuous testing is 12 hours which means the set can be used for many weeks without recharging in normal intermittent use. The high voltage testing electrodes are of the type

20、and dimensions found in most national specifi cations. Adjustment of the electrode gap and cleaning the electrodes is simple and convenient. Alternative electrode shapes needed for some national specifi cations are easily available and fi tted. Where the specifi cation requires the oil sample to be

21、stirred a small plastic paddle is rotated in the oil to effectively remove carbon produced by the discharge at oil breakdown. Two methods of oil breakdown detection are used and are sensitive enough to remove the need to manually watch for transient sparkover as mentioned in some specifi cations. Th

22、e control panel has an on/off button and three softkey function buttons for all test selections. A rear switch disconnects the battery for storage periods over six months. Choice of language and choice of national and user proof tests as well as pass/fail de-skilled tests are all selected and starte

23、d from a user friendly menu on the l.c.d. display. Reminders are included to fi t the vessel, use the appropriate electrodes and set the necessary gap. The instrument automatically shuts down around 25 minutes after completion of a test sequence in order to maximise battery life. The last results ma

24、y be recovered from the non-volatile memory after this shutdown. At the end of each automatic test the individual test results from the sequence are averaged, and the standard deviation is calculated, and displayed. The individual breakdown values may be reviewed if required. OTS 60PB follows the oi

25、l testing sequences described in many national and other specifi cations among which are: British BS 148, BS 5730a (automatic proof testing), BS 5874; International IEC 156, American ASTM D877 ASTM D1816, German VDE 0370, French NFC 27, Spanish UNE 21, Italian CEI 10-1, Russian OCT 6581, South Afric

26、an SABS 555, Australian AS 1767 and Institute of Petroleum IP 295. Two types of withstand (proof) testing of an oil sample are available. The principle with these tests is to subject the oil sample to a specifi ed voltage for a defi ned length of time (1 minute) to see if it will withstand that volt

27、age. In one of the tests the voltage is removed after a minute, in the other test, the voltage continues to rise after the minute until breakdown or the maximum value is reached. Withstand (proof) tests can be set up to the users own requirements, and then repeatedly called up to quickly test oil un

28、der known fi xed conditions. 4 Figure 1 OTS 60PB Oil Test Set Layout Figure 2 Oil Test Set ControlsFigure 3 Oil Test Set Rear Panel HV indicator light Test chamber Oil sample Chamber cover Control keys Dot-matrix LCD display Power supply on/off switch Printer lead and charger/vehicle lead connector

29、socket Fuses Applications 5 The OTS 60PB is used for determining the dielectric strength of liquid insulants such as insulating oils used in transformers, switchgear, cables and other electrical apparatus. It is portable and suitable for testing on site as well as in the laboratory. The test set is

30、fully automatic. The operator has only to prepare the test vessel, load it with sample oil, place it in the test chamber, select the appropriate specifi cation for the tests and then start the test sequence. The test set carries out automatically (and if necessary unattended) the sequence of tests a

31、s defi ned by the pre-selected national specifi cation. Oil testing specifi cations, for which the set is pre-programmed, are as follows: A 5 minute test sequence is also provided so that the operator may quickly obtain an idea of the breakdown value of an oil sample. Two types of semi automatic wit

32、hstand (proof) testing of an oil sample are available. The principle with these tests is to subject the oil sample to a specifi ed voltage for a defi ned length of time (1 minute) to see if it will withstand that voltage. In one of the tests the voltage is removed after a minute, in the other test t

33、he voltage continues to rise after passing for one minute until breakdown or the maximum value is reached. Withstand (proof) tests can be set up to the users own requirements, and then repeatedly called up to quickly test oil under known fi xed conditions. The test results can be reviewed on the LCD

34、 or printed via the RS232 interface. An optional, battery operated printer is available to obtain a hard copy of the results. The safety features incorporated in the test sets design include two forced break switches used as described in BS 5304. These are interlocked with the oil vessel loading doo

35、r. Power cord If the power cord plug is not suitable for your type of socket outlets (receptacles), do not use an adaptor. You should use a suitable alternative power cord, or if necessary change the plug by cutting the cord and fi tting a suitable plug. The colour code of the cord is: Earth (Ground

36、)Yellow/Green NeutralBlue Phase (Line)Brown If using a fused plug, a 3 Amp fuse to BS 1362 should be fi tted. Note: A plug severed from the power cord should be destroyed, as a plug with bare conductors is hazardous in a live socket outlet (receptacle). AS1767 2.54mm Specifi cation 6 Output Voltage

37、(max.) 60 kV r.m.s. (30 kV 030 kV) at 61,8 Hz Parameters of Standard Test Specifi cations DisplayDot-matrix liquid crystal display giving alpha-numeric information and kV test voltage to two digits. Temperature Range Operation0 C to + 40 C Storage30 C to +65 C Humidity Range Operating80% RH at 40 C

38、(non-condensing) Storage93% RH at 40 C, 95% RH at 25 C cyclic (in accordance with BS 2011 Part 21) Input SocketBattery charger or 12 volt vehicle supply inlet socket. SafetyThe test set meets the requirements for safety to IEC 1010-1 (1995), EN61010 (1995). The safety interlock is to BS 5304 (1988)

39、Guarding of Machinery standard. E.M.C.In accordance with IEC 61326 including amendment No. 1 Power SupplyInternal rechargeable 12 V, 12 Ah, battery (typically 12 hours continuous testing). Charger supply 90 V to 264 V, 50/60 Hz. 12 volt, negative to chassis, vehicle lead set (does not recharge inter

40、nal battery) Fuses2 x F6, 3 A, IEC 127/1, 20 mm x 5 mm, HBC fuses. Dimensions373 mm x 259 mm x 247 mm (141116in x 10316in x 934in) basic without accessories. Weight19 kg (42 lb) basic without accessories. CleaningThe exterior case can be wiped with a clean cloth dampened with an alcohol based cleani

41、ng fl uid. Test Specifications Parameters Test Spec.InitialRate of riseIntermediateIntermediateNumberMaximum Test Results Standof TestStirStandofTime TimeVoltageTimeTimeTests 5 min test1 min.2 kV/s30 s30 s34 min. 30 sMean BS 148 etc.3 min2 kV/s1 min1 min616 minMean IEC156 5 min.2 kV/soptional2 min61

42、8 min.Mean EN 601565 min2 kV/soptional2 min618 minMean ASTM D8772 min. 20 s3 kV/s-1 min.58 min.Mean ASTM D18163 min.0,5 kV/sContinuous1 min.517 min.Mean UNE2110 min2 kV/s1 min.4 min.638 min.Mean of last 5 tests Withstand A2 kV/sRamps to preselected value for 1 minute or breakdown Withstand B2 kV/sAs

43、 above and continues to breakdown or maximum value of test set Withstand test at 22 kV, 30 kV or 40 kV (depending on equipment category and electrode gap) for 1 min If break- down occurs another two tests are carried out, both must pass for sample to be accepted. As per BS5730a but ramps to Breakdow

44、n after test is passed. BS148 etc. includes BS 5874, VDE 0370, NFC 27, CEI 344, OCT 6581, SABS 555, AS 1767, STAS 286 and IP 295. NFC 27, STAS 286 and UNE 21 omit the first breakdown value from the average calculation. BS5730a-2 kV/s1 min.1 min. BS5730a LEPLC1min stir +2 kV/s1 min.1 min. 1 min stand

45、 Continuous/None AS1767 Continuous/None Supplied with the test setPart No. Padded protective carrying case with handle and shoulder strap. 6420-102 4 x 600 ml capacity oil test vessels Pair of spherical electrodes (fi tted)6220-484 Pair of mushroom electrodes6220-482 Pair of cylindrical electrodes62

46、20-483 Oil test set preparation kit6121-486 comprising:- two magnetic stirrers pair of cylindrical electrodes 1 inch. diam. pair of mushroom electrodes 36 mm diam. * electrode spacing gauges for 1 mm (0.08 inch.), 2.5 mm, 2.54 mm (0.01 inch) and 4 mm (0.16 inch) Battery charger unit6331-659 Printer

47、lead, OTS 60PB to 25 way D6340-091 Spare fuse25413-285 User Guide6171-585 Supplied as optional extras Close fi tting test vessel lid6121-402 Pack of 10 reusable / disposable oil test vessels6220-487 Lead for connection to a vehicle battery via the cigar / cigarette lighter socket6231-509 Pair of cyl

48、indrical electrodes with 0,5 mm edge radius 6220-538 Printer kit6220-568 Paper roll 57,5 mm wide, 15 m long, 50 mm diam.25995-001 Ribbon Epson part no. ERC-09 (IRC160)25995-002 Printer lead6340-091 The optional cylindrical electrodes with a 0,5 mm edge radius do not meet the ASTM D877 specifi cation

49、. They give a higher breakdown value than the standard cylindrical electrode which will allow results to be compared between instruments with a similar electrode design. * The new spacer gauges are no longer big enough to have the diameter marked on them. They now have a series of grooves cut into them to state the difference between them which are as follows: Accessories 7 Guage Indentifi cation 5152-2935152-294 5152-296 5152-319 5152-296 1mm2mm2.5mm2.54mm4mm Rings 1 2 3 4 Operation 8 Warnings read and apply the safety warnings on page 1. 1.Ensure that the batt