Biddle DCM300E_UG 电路图.pdf

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1、DCM300E Earth Leakage Clamp Meter Safety Warnings Do not take measurements beyond maximum selected range. Take extreme care and keep hands behind the hand guard when taking measurements above 30 V RMS. Do not operate the instrument with the battery cover removed. Do not operate the instrument if any

2、 part of it is damaged. Do not operate the instrument in environments subject to high temperature, damp, humidity or excessive vibration. Safety Warnings must be read and understood before the instrument is used, and observed during use. NOTE THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND

3、COMPETENT PERSONS The DCM300Eis a rugged lightweight pocket size clamp meter designed to measure a.c. earth leakage currents. This enables earth leakage faults to be detected and located without having to isolate and disconnect circuit wiring. Additionally, the DCM300E measures a.c. circuit currents

4、 up to 300 Amps. Powered by two LR44 or SR44 cells, the instrument design takes full advantage of microprocessor technology and features a clear 312 digit LCD combining digital and bar- graph analogue readings. The two position mode switch provides 4 ranges; 30 mA, 300 mA, 30 A and 300 A, with minim

5、um resolution of 0,01 mA on the 30 mA range. To conserve battery power, Auto shut off operates after a period of 10 minutes of inactivity by the instrument. The instrument can be switched back on by selecting Off and then On again. Transducer Jaws Jaw Guard Tactile Handguard Jaw Opening Lever 312Dig

6、it LCD Display On / Off SwitchMode Selector Switch (mA / A) Data Hold Switch Measurement of Leakage Current Earth Conductors 1)Set the range selector switch to the 30 /300 mA position. 2)Set the Power switch to On. 3)Ensure that the Data hold switch is Off.is not displayed. 4)Clamp the jaws around t

7、he earth conductor. 5)If necessary, press the Data hold switch. is displayed. 6)Take the reading from the Digital and/or Bar-graph display. Single phase or 3 phase conductors 1)Set the range selector switch to the 30 /300 mA position. 2)Set the Power switch to On. 3)Ensure that the Data hold switch

8、is Off.is not displayed. 4)Clamp the jaws around the two single phase conductors, or the 3 conductors in the case of 3 phase. 5)If necessary, press the Data hold switch.is displayed. 6)Take the reading from the Digital and/or Bar-graph display. Features and Controls General Description Wrist Strap p

9、oint Measurement of Line Current Battery Replacement 1)Set the range selector switch to the 30 /300 mA position. 2)Set the Power switch to On. 3)Ensure that the Data hold switch is Off.is not displayed. 4)Clamp the jaws around one conductor of the circuit under test. 5)If necessary, press the Data h

10、old switch. is displayed. 6)Take the reading from the Digital and/or Bar-graph display. 1)When the symbol appears on the display, the two 1,5 V button cells must be replaced. 2)Switch the DCM300E Off. 3) Loosen the small cross head screw securing the battery cover, and remove the cover. Take care no

11、t to lose the small screw. 4)Remove both exhausted cells and carefully fi t two new cells into the recess. Position both cells +ve side up. 5)Replace the battery compartment cover and re- secure with the small cross head screw. Battery Cover Screw The correct size screw must be used and fi tted to e

12、nsure battery cover security, and safe operation. RadioFans.CN 收音机爱 好者资料库 Specifi cation Display:312 digit L.C.D. Maximum Indication:3200. Over Range Indication: Data Hold Indication: Low Battery Indication:2.5 V 2,7 V Auto Shut-Off:Operates after approximately 10 minutes of instrument inactivity. A

13、ccuracy:50 / 60 Hz at 23 C 5 C and 80% R H non condensing. RangeMin. ResolutionAccuracy 30 / 300 mA0,1 mA 1,2% of reading 5 digits. 30 / 300A0,01 mA0 - 200A 1,2% of reading 5 digits. 200 - 250A- 3,0% of reading 5 digits. 250 - 300A 5,0% of reading 5 digits. Limitation of Circuit Voltage:Less than 60

14、0 V a.c. Sampling Time:Digital - Approx 2 x per second. Analogue - Approx 12 x per second. Operating Temperature:0C -40C, 80% RH (Non condensation). Storage Temperature:-10C -60C, 70% RH (Non condensation). Power Source:2 x 1,5 V Button battery type LR44 or SR44. Power Consumption:Approx 5 mW. Batte

15、ry Life:Typically 50 hours. Flash Test:3700 V a.c. / 1 minute max (Between CT core and housing). Safety: Meets the requirements for double insulation to IEC 1010-2-032, IEC1010-1 (1995), EN 61010-1 (1995) installation Category II*, 600 Volts phase to earth, Category III* 300 V phase to earth, 500 Vo

16、lts phase to phase. E.M.C:The instrument meets EN 50081-1 and EN 50082-1 (1992). Jaw Opening Capability:40 mm diameter. Dimensions:64 mm x 176 mm x 23 mm Weight:Approximately 125 gm. Cleaning: Wipe with a clean cloth damped with soapy water or Isopropyl Alcohol (IPA). *Relates to transient overvolta

17、ge likely to be found in portable equipment and appliances. * Relates to transient overvoltage likely to be found in fi xed installation wiring. Repair and Warranty The instrument circuit contains static sensitive devices, and care must be taken in handling the printed circuit board. If the protecti

18、on of an instrument has been impaired it should not be used, and be sent for repair by suitably trained and qualifi ed personnel. The protection is likely to be impaired if, for example, the instrument shows visible damage, fails to perform the intended measurements, has been subjected to prolonged

19、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. Note:Any unauthorized prior repair or adjustment will automatically invalidate the Warranty. Instrument Repair and Spare Parts For

20、 service requirements for MEGGERInstruments contact :- AVO INTERNATIONALorAVO INTERNATIONAL Archcliffe Road 510 Township Line Road Dover Bluebell Kent, CT17 9ENPA 19422-2795 EnglandU.S.A. Tel: +44 (0) 1304 502243Tel: +1 (215) 646-9200 Fax: +44 (0) 1304 207342 Fax: +1 (215) 643-7215 or an approved re

21、pair company. Approved Repair Companies A number of independent instrument repair companies have been approved for repair work on most MEGGER instruments, using genuine MEGGER spare parts. Consult the Appointed Distributor / Agent regarding spare parts, repair facilities and advice on the best cours

22、e 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 Custo

23、ms. Arepair estimate showing freight return and other charges will be submitted to the sender, if required, before work on the instrument commences. Symbols used on the instrument: Caution: Refer to accompanying notes. Equipment protected hroughout by Double Insulation (Class II). Equipment complies

24、 with EU Directives AVO INTERNATIONAL Archcliffe Road 510 Township Line Road561 S.Westmoreland Road DoverBluebellDallas Kent, CT17 9EN.PA 19422-2795TX 75237-1017 England.U.S.A.U.S.A. Tel: +44 (0) 1304 502100Tel: +1 (215) 646-9200Tel: +1 (8oo) 723-2861 (U.S.A. only) Fax: +44 (0) 1304 207342 Fax: +1 (

25、215) 643-2670 Tel: +1 (214) 330-3203 (International) Fax: +1 (214) 337-3038 The company reserves the right to change the specifi cation or design without prior notice MEGGER is the registered Trade Mark of AVO INTERNATIONAL LIMITED. This data uses the comma as the decimal marker to align with general European usage Copyright AVO INTERNATIONAL LIMITED. Part No. 6172-172 Edition 1 - 11BB RadioFans.CN 收音机爱 好者资料库