AEMC GROUNDFLEX 6474 Скачать руководство пользователя страница 24

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06/08

99-MAN 100326 v1

Chauvin Arnoux

, Inc. d.b.a. AEMC

Instruments

15 Faraday Drive • Dover, NH 03820 USA • Phone: (603) 749-6434 • Fax: (603) 742-2346

www.aemc.com

Содержание GROUNDFLEX 6474

Страница 1: ...E N G L I S H User Manual GROUNDFLEX ADAPTER 6474 ...

Страница 2: ......

Страница 3: ... a nominal charge the instrument would need to be returned to our facility along with your Ground Tester Model 6472 The recommended calibration interval is 12 months and begins on the date of receipt by the customer For recalibration please use our calibration services Refer to our repair and calibration section at www aemc com Serial _________________________________ Catalog _ ___________________...

Страница 4: ...eatures 6 2 2 GroundFlex Sensor 7 2 2 1 Calibration of GroundFlex Sensors 7 2 3 Measurements in AUTO Mode 10 2 3 1 Preparation 10 2 3 2 Making a Measurement Resistance of Legs 11 2 3 3 Other Measurements 13 2 3 4 MANUAL Mode and SWEEP Mode 13 3 SPECIFICATIONS 15 3 1 Electrical 15 3 2 Mechanical 17 3 3 Environmental 17 3 4 Safety 17 4 MAINTENANCE 18 3 1 Maintenance 18 3 2 Cleaning 18 Repair and Cal...

Страница 5: ...d place of use indicated in the specifications Do not use the instrument or its accessories if they appear damaged Use accessories that have overvoltage category and service voltages greater than or equal to those of the instrument Cat IV 50V Use only accessories that comply with safety standards IEC 61010 2 031 32 Wear the appropriate protective gear insulating boots and gloves Check that no term...

Страница 6: ... protected secondaries signal level and limited energy circuits Cat II For measurements performed on circuits directly connected to the electrical distribution system Examples are measurements on household appliances or portable tools Cat III For measurements performed in the building installation at the distribution level such as on hardwired equipment in fixed installation and circuit breakers C...

Страница 7: ... spaded lugs one 100 ft AEMC tape measure DataView software ground tester workbook CD carrying bag for meter carrying bag for kit hard carrying case product warranty and registration card and a user manual 1 4 1 Accessories and Replacement Parts Bag 6 Carrying Bag for Ground Kits Cat 2119 82 Tape Measure AEMC 100 ft Cat 2130 60 Ground Tester DVD Workbook Set Cat 2130 64 Set of two 14 5 T shaped Au...

Страница 8: ...x Sensor SENSOR TURNS SENSITIVITY To Model 6472 Overload INPUT 1 2 3 4 GroundFlex Adapter MODEL 6474 2 4 1 6 5 3 1 Inputs 1 through 4 for four GroundFlex sensors 2 Connector for connection lead to the Ground Tester Model 6472 3 OVERLOAD indicator 4 Selector for NUMBER OF TURNS 1 2 3 or 4 5 Selector for SENSITIVITY x10 x1 or x1 10 6 INPUT SELECTION 1 2 3 4 1 2 1 3 or 1 4 ...

Страница 9: ...hat are much larger GroundFlex sensors are available in lengths of up to approx 16 ft 5m and can be placed around objects such as pylon legs up to in approx 5 ft diameter 1 5m 2 2 1 Calibration of GroundFlex Sensors GroundFlex sensors need to be calibrated before the first use Calibration is necessary for a new sensor one that is no longer identified or when a sensor has been replaced The calibrat...

Страница 10: ...f the Model 6474 the one with the red ring to input 2 the one with the orange ring to input 3 and the one with the yellow ring to input 4 Coil the GroundFlex sensor four times around in the calibration loop and close it using its screw connector Place the connector as far as possible from the calibration device NOTE The sensors have arrows to indicate a direction All sensors should face the same d...

Страница 11: ...ress the Hz OPTIONS button 5 times The device starts by comparing the current IInt injected by the device into the calibration loop to the current IA measured by the GroundFlex sensor If they are different the CAL symbol blinks to recommend a calibration x 5 4 H E Sx1 1 AUTO mA m A NOTE To avoid measurement errors do not touch the GroundFlex sensor or the calibration loop during the calibration 6 ...

Страница 12: ... The Model 6474 is intended primarily to measure the current that flows through a high voltage pylon to the ground You can wrap up to 4 legs of the pylons each with a GroundFlex sensor and measure the current flowing to earth through each of the legs or through several legs After calibration the GroundFlex sensors must always be connected to their re spective channels 1 Set the switch to GroundFle...

Страница 13: ...iary electrodes H Z and S Y on opposite sides of the pylon as far away as possible 100 150 ft and if possible perpendicular to the high voltage line depth is not important This will eliminate interference with the measurement by stray voltages or currents induced under the high voltage line 2 In order to avoid electromagnetic interference it is best to unwind the full length of each cable from the...

Страница 14: ...age lines 4 GroundFlex sensors connected with the same orientation WARNING If the GroundFlex Adapter Model 6474 is connected to the earth tester the earth potential connected to the terminals E X and ES Xv will also be present at the BNC connectors of the GroundFlex sensors and at the connecting cable between the adapter and tester Whenever any doubt exists about this earth potential the user shou...

Страница 15: ...moving the contacts of ES Xv and E X on the pylon by simply passing the 2 con necting cables through the GroundFlex sensor The current in connecting cable E X and the current through the leg of the pylon then cancel each other out You can also measure any leakage currents I Act flowing through each leg of the pylon in normal operation of the high voltage line If you find different leakage currents...

Страница 16: ... of an installation like this having 10 pylons gives the following results assuming an earth resistance Rpylon of 10Ω for each pylon and an inductance L of 550 µH for the link via the overhead earth wire at the tip of the pylons Impedance of the pylons 0 2 4 6 8 10 12 14 16 0 1000 2000 3000 4000 5000 F Hz Z ohm Measurement of a pylon earth impedance with GroundFlex sensors Conventional 4 pole meas...

Страница 17: ...7 to 9 999Ω 10 00 to 99 99Ω 100 0 to 999 9Ω 1 000 to 9 999kΩ 10 00 to 99 99kΩ Resolution 0 001Ω 0 01Ω 0 1Ω 1Ω 10Ω Test Voltage 16 or 32V user selectable Frequency From 41 to 128Hz selectable Resistance Measurement Frequency From 41 to 5078Hz selectable Accuracy 5 of Reading 1ct 128Hz The intrinsic error specified refers to reference conditions with a test voltage of 32V test frequency of 128Hz RH ...

Страница 18: ...TIVITY x 10 setting The current measured depends on the number of turns of the GroundFlex sensor around the conductor to be measured e g if the GroundFlex sensor is wrapped 4 times around a conductor carrying a current of 1A the input signal will be the same as if the GroundFlex sensor were wrapped once around a conductor car rying a current of 4A The operating error is therefore indicated for an ...

Страница 19: ...s range corresponds to the one defined by standard EN 61557 for which an operating error including the quantities of influence is defined When the device is used outside this range 1 5 10 C and 1 5 between 75 and 90 RH must be added to the operating error 3 4 Safety Electromagnetic Compatibility This instrument satisfies the EMC and LVD directives required for the CE marking and product standard I...

Страница 20: ... so To avoid electrical shock and or damage to the instrument do not get water or other foreign agents into the case Turn the instrument OFF and disconnect the unit from all circuits before opening the case Use specified spare parts only 3 2 Cleaning Disconnect the instrument from any source of electricity Use a soft cloth lightly moistened with soapy water Wipe with a moist cloth and then dry wit...

Страница 21: ...ludes calibration certificate plus recorded calibration data Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Or contact your authorized distributor Costs for repair standard calibration and calibration traceable to N I S T are available NOTE You must obtain ...

Страница 22: ...y return the instrument to us for repair provided we have your warranty registration information on file or a proof of purchase AEMC Instruments will at its option repair or replace the faulty material REGISTER ONLINE AT www aemc com Warranty Repairs What you must do to return an Instrument for Warranty Repair First request a Customer Service Authorization Number CSA by phone or by fax from our Se...

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Страница 24: ...06 08 99 MAN 100326 v1 Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 603 749 6434 Fax 603 742 2346 www aemc com ...

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