Biddle BM400-Series-UG 电路图.pdf

《Biddle BM400-Series-UG 电路图.pdf》由会员分享，可在线阅读，更多相关《Biddle BM400-Series-UG 电路图.pdf（7页珍藏版）》请在收音机爱好者资料库上搜索。

1、Insulation & Continuity Testers MEGGERBM400/2 Series User Guide www.MeterC (800) 230-6008 SAFETY WARNINGS ,Safety Warnings and Precautions must be read and understood before the instrument is used. They must be observed during use. ,The circuit under test must be de-energized and isolated before con

2、nections are made except for voltage measurement (BM400/2, BM401/2 and BM403/2 only). ,Circuit connections must not be touched during a test. ,After insulation tests, capacitive circuits must be allowed to discharge before disconnecting the test leads. ,The default voltmeter and automatic discharge

3、are additional safety features and should not be regarded as a substitute for normal safe working practice. ,Test leads and crocodile clips, must be in good order, clean, with no broken or cracked insulation. ,Replacement fuses must be of the correct type and rating. See Specification. ,U.K. Safety

4、Authorities recommend the use of fused test leads when measuring voltage on high energy systems. NOTE THEINSTRUMENTSMUSTONLYBEUSEDBYSUITABLYTRAINEDAND COMPETENT PERSONS Before using the instrument, follow the separate instructions provided to fit either the locking or non-locking test button. AVO IN

5、TERNATIONAL recommend the fitting of the non-locking test button. Hands free operation is provided on all ranges except the insulation ranges. If the locking button is fitted, extra care must be taken. Symbols used on the instruments are: Caution, risk of electric shock Caution, refer to accompanyin

6、g documents Equipment protected throughout by Double Insulation (Class II) Equipment complies with current EU Directives. RadioFans.CN 收音机爱 好者资料库 GENERAL DESCRIPTION The B M 4 0 0 / 2 Series instruments are battery powered Insulation and Continuity testers, with a measurement capability from 0,01 Co

7、ntinuity to 999 M Insulation. Offering multi-voltage facilities, the instruments take full advantage of microprocessor technology and feature a large liquid crystal display combining digital and analogue readings. The analogue display has the benefit of indicating trends and fluctuations in readings

8、, while the digital readout gives direct accurate results. A customized connector on the top of the instrument enables the optional Megger SP1 Switched probe to be used for two handed probe operation. Available as an optional extra, the Megger DLB Downloading Base can be fitted for realtime download

9、ing of measured test results to a Personal computer via an RS232 serial lead. The optional miniature clip-on current transducer MCC10 enables the instrument to measure a.c. currents from 1 A to 10 A, with a resolution of 0,1 A. Designed to IEC1010-1 the B M 4 0 0 / 2 Series are protected against con

10、nection to a 440 V Category III supply. The instruments have a basic accuracy of 2% at 20 C. The instruments are waterproof and dustproof to IP54. This helps maintain accuracy and ensures maximum reliability in harsh environments. OPERATION Testing is automatically inhibited if: An external voltage

11、55 V is present when switched to any Insulation position. An external voltage 25 V is present on all other ranges (excluding Voltmeter position). The external voltage is indicated on the display (flashing V on the BM402/2 & BM404/2) and the bleeper sounds intermittently. Auto-shut Off To conserve ba

12、ttery life, Auto-shut Off (preceded by a series of bleeps) operates after 12 minutes of instrument inactivity in all insulation test switch positions, and after 5 minutes of instrument inactivity in all other switch positions. If desired, the 5 minute shut-off can be changed to 60 minutes (non insul

13、ation test switch positions). To do this, first perform a battery check, then press the TEST button twice to show (60). If an insulation test, or O F F is subsequently selected, the shut-off time reverts to the default times. It is therefore not possible to generate dangerous voltages for more than

14、12 minutes, even with a locking test button. To restore operation after Auto-shut Off, select O F F followed by the required switch position. N o t e : Auto-shut Off has a small power consumption and it is recommended that the instrument is switched to off when not in use. This is particularly impor

15、tant at the end of the working day, since no battery power is used in the OFF position. Refer to Safety Warnings before using the instrument RadioFans.CN 收音机爱 好者资料库 INSULATION TESTS (M) Insulation tests operate only when the T E S T button is pressed. Grey labelling denotes where it is necessary to

16、press the test button.To prevent damage to the instrument from accidental connection to a live circuit, the test button must not be pressed (or locked down) before connecting to the item under test. 1. Set the selector switch to the test voltage required. 2. Connect the test leads, first to the inst

17、rument, and then to the isolated item under test. 3. Press the TEST button to activate the test voltage.Take the reading. 4. Release the TEST button at the end of the test. The reading will hold for a few seconds. 5. Capacitive circuits charged during a test will automatically discharge. The Live Ci

18、rcuit Warning is displayed If significant voltage remains. 6. Remove the test leads only when no voltage is indicated. Note: There is a safety delay of 3 seconds on the first operation on the 1000 V range, each time the range is selected. Automatic Discharge When the test button is released after an

19、 insulation test, a 250 k resistor is automatically switched across the terminals to discharge the item under test. Any voltage present will be indicated on the display so that the discharge can be monitored (except on the B M 4 0 2 / 2 and B M 4 0 4 / 2, which will display a flashing V.) Polarizati

20、on Index Testing (PI) All insulation ranges can be used for PI testing. PI is the resistance value after 10 minutes divided by the resistance value after 1 minute. More detailed information on PI Testing and value assessment can be found in AVO International publications listed in the Accessories. C

21、ONTINUITY TESTING() Continuity tests are activated when the probes make contact. The test operates without the need to press the T E S T button.This range is not suitable for diode testing . 1.Set the selector switch to . 2.Connect the test leads. The pointer will appear when connection to 1 V is de

22、tected, the display will flash and the bleeper will sound. Battery Replacement When the low battery symbol appears, the cells are nearly exhausted and should be replaced as soon as possible. To install or replace the cells, disconnect the test leads, switch the instrument to OFF and loosen the capti

23、ve screws holding the battery compartment cover in place. Remove the cover and lift out the cells. Ensure that the replacement cells are fitted with the correct polarity in accordance with the label in the battery compartment. Replace and re-secure the battery compartment cover. Remove the cells if

24、the instrument is not going to be used for an extended period of time. Fuse Checking and Replacement To check the instrument fuse switch to an insulation range and press the TEST button. The symbol will appear if the fuse is ruptured. Note: The voltmeter will continue to operate for voltages greater

25、 than 100 V at 50 Hz. To replace the fuse, disconnect the test leads, switch the instrument OFF and loosen the captive screws holding the battery compartment cover in place. Remove the cover and replace the fuse of the correct type and rating. Replace and re-secure the battery compartment cover. SPE

26、CIFICATION INSULATION RANGES BM400/2BM401/2BM403/2 BM402/2BM404/2 Nominal test500 V500 V250 V, 500 V Voltage (d.c.):1000 V1000 V Measuring Range:0,01M to 999 M on all ranges (0 to 10 G on analogue scale) Terminal Voltage (d.c.): +15% maximum on open circuit. Short Circuit Current: 2 mA Test Current

27、on Load:1 mA at min. pass values of insulation specified in BS7671, HD384 and IEC 364, 2 mA max. Accuracy (at 20 C): 2%, 2 digits CONTINUITY RANGES Measuring Range:0,01 to99,9 (0 to 50 on analogue scale) Open Circuit Voltage:5 V, 1 V Short Circuit Current:205 mA, 5 mA Accuracy (at 20 C):1 to 9,99 :

28、2%, 2 digits 10 to 99,9 : 5% Zero Offset Adjust:0 to9,99 Continuity Beeper:Operates at less than 5 RESISTANCE RANGE (can be used for diode testing) Measuring Range:0,1k to100 k (0 to10 M on analogue scale) Open Circuit Voltage:5 V, 1V Short Circuit Current:20 A, 5 A Accuracy (at 20 C): 5% 2 digits T

29、YPICAL TERMINAL VOLTAGE CHARACTERISTICS VOLTAGE RANGE Analogue ScaleMeasurement ScaleAccuracy(above 1 V) 0 to 500 V 0 to 450 V d.c. or a.c. (50/60 Hz) 1% 2 digits 450 to 600 V d.c. or a.c.(50/60 Hz) 2% 2 digits 0 to 450 V 400 Hz a.c. 5% 2 digits 1,0 to 50 V 1,0 to 50,0 V d.c. or a.c. (50/60 Hz) 2% 3

30、 digits SAFETY The instruments meet the requirements for double insulation to IEC 1010- 1 (1995) EN 61010-1 (1995) to Category III*, 300 Volts phase to earth, 440 Volts phase to phase, without the need for separately fused test leads. If required, fused test leads are available as an optional access

31、ory. The B M 4 0 2 / 2 and B M 4 0 4 / 2 do not incorporate a voltage range and must not be intentionally connected to live circuits. *Relates to transient overvoltage likely to be found in fixed installation wiring. FUSE500 mA (F) 440 V, 32 x 6 mm Ceramic HBC 10 kA minimum. E.M.C.The instruments me

32、et EN 50081-1 and EN 50082-1 (1992). POWER SUPPLY Battery Type:6 x 1,5 V Alkaline cells IEC LR6 type only. Battery Life:Typically 3000, 5 second operations, at 1 kV. ENVIRONMENTAL CONDITIONS Altitude:Up to 2000 m Pollution degree:2 Operating Range:-20 to +40 C Operating Humidity:90% R.H. at 40 C max

33、. Storage Range:-25 to +65 C Temperature Coefficient:0,1% per C on all ranges WEIGHT625g DIMENSIONS220 mm x 92 mm x 55 mm CLEANINGWipe with a clean cloth dampened with soapy water or Isopropyl Alcohol (IPA). ACCESSORIES Supplied:Part Number User Guide6172-189 Test lead set 6220-437 Zip-up carrying c

34、ase6420-090 Optional: Fixed prod5210-350 Fused lead set, FPK86111-218 Test & carry case6420-112 Download Base DLB220-603 Switch Probe SP16220-606 Miniature Clip on A.C. Current Transformer MCC106111-290 Test Record Card (pack of 20)6111-216 Publications A Stitch in TimeAVTM21-P8B Note Users of this

35、equipment and or their employers are reminded that Health and Safety Legislation require them to carry out valid risk assessments of all electrical work so as to identify potential sources of electrical danger and risk of electrical injury such as from inadvertent short circuits. Where the assessmen

36、ts show that the risk is significant then the use of fused test leads constructed in accordance with the HSE guidance note GS38 Electrical Test Equipment for use by Electricians should be used. REPAIR AND WARRANTY The instrument circuit contains static sensitive devices, and care must be taken in ha

37、ndling the printed circuit board. If the protection of an instrument has been impaired it should not be used, and be sent for repair by suitably trained and qualified personnel. The protection is likely to be impaired if, for example, the instrument shows visible damage, fails to perform the intende

38、d measurements, has been subjected to prolonged storage under unfavourable conditions, or has been exposed to severe transport stresses. New Instruments are Guaranteed for 1 Year from the Date of Purchase by the User N o t e : Any unauthorized prior repair or adjustment will automatically invalidate

39、 the Warranty. Instrument Repair and Spare Parts For service requirements for M E G G E R Instruments contact : AVO INTERNATIONAL o r MeterCenter Archcliffe Road 825 W. Queen Creek Rd., Suite 2118 Dover Chandler, AZ 85248 Kent, CT17 9EN U.S.A. E n g l a n d SalesMeterC Tel: +44 (0) 1304 502243 Tel:

40、+1 (480) 659-8351 Fax: +44 (0) 1304 207342 Fax: +1 (480) 659-8361 or an approved repair company. Approved Repair Companies A number of independent instrument repair companies have been approved for repair work on most M E G G E R instruments, using genuine M E G G E R spare parts. Consult the Appoin

41、ted Distributor / Agent regarding spare parts, repair facilities and advice on the best course of action to take. Returning an Instrument for Repair If returning an instrument to the manufacturer for repair, it should be sent freight pre-paid to the appropriate address. A copy of the Invoice and of the packing note should be sent simultaneously by airmail to expedite clearance through Customs. A repair estimate showing freight return and other charges will be submitted to the sender, if required, before work on the instrument commences.