P/N 964774 rev.A OPERATING INSTRUCTIONS for AMPROBE (R) Flexible Current Transducer Model ACF-3000DM-A AMPROBE 1 TABLE OF CONTENTS LIMITED WARRANTY ..................................................................................3 INTRODUCTION ..........................................................................................4 ACF-3000DM-A ELECTRONICS PACKAGE................................................4 FLEXIBLE AC CURRENT TRANSDUCER....................................................6 OPERATION..................................................................................................7 MAINTENANCE ............................................................................................8 BATTERY REPLACEMENT ..........................................................................9 SPECIFICATIONS ......................................................................................10 2 LIMITED WARRANTY Congratulations! You are now the owner of an AMPROBE(R) instrument. It has been quality crafted according to the highest standards of quality and workmanship. This instrument has been inspected for proper operation of all its functions and tested by qualified factory technicians according to the long-established standards of AMPROBE(R) . Your AMPROBE(R) instrument has a limited warranty against defective materials and/or workmanship for one year from the date of purchase provided that the seal is unbroken or, in the opinion of the factory, the instrument has not been tampered with or taken apart. Should your instrument fail due to defective materials, and/or work manship during the one year warranty period, return it along with a copy of your dated bill of sale which must identify instrument by model number and manufacturing number. AMPROBE Tel: 305-423-7500 Fax: 305-423-7554 Tech. Support: 1-800-327-5060 Outside the U.S.A. the local Amprobe representative will assist you. Above limited warranty covers repair and replacement of instrument only and no other obligation is stated or implied. 3 ! ! WARNING ! ! (Do not use until you have read this!) High-voltage potentials may exist in the vicinity of the desired current measurements. Use locally approved safety procedures when working near high-voltage potentials. It is recommended not to install the Flexible Transducer around a live bus that is at a high-voltage potential. If installation is not possible when the bus is disconnected from main supply, use appropriate gloves and/or equipment that are approved for working around high-voltage potentials when installing the Flexible Transducer in the vicinity of these hazardous potentials. INTRODUCTION The AMPROBE Flexible AC Current Transducer Model ACF-3000DM-A is an assembly similar in purpose to a CTor current transformer. It may be used to measure AC currents from as low as several amps to a maximum of 3.0kA rms. The device output is an analog voltage that is proportional to the current in the conductor. The output signal is isolated from the hazardous conductor potential and is an exact replica of the AC current waveform in the conductor. The output signal is available via a 2 pin snap connector. ACF-3000DM-A ELECTRONICS PACKAGE The ACF-3000DM-A electronics package is permanently connected to the transducer and comes standard with two ranges selectable by the switch mounted on the side of the electronics package. The ranges are 300A and 3.0kA yielding respectively 300A and 3.0kA rms AC as the maximum current that can be measured. When one of the ranges is selected, the unit is automatically turned on. Note: The 3.0kArange should only be selected if the measured current is over 300A. 4 When the ACF-3000DM-A is turned on, the LED mounted behind the front label blinks once, then goes out to minimize drain on the battery. When the batteries are nearing the end of their life the LED flashes approximately twice per second, the batteries should be replaced and soon. If the LED fails to flash once when the unit is turned on, the batteries are dead, replace immediately. The ACF-3000DM-A comes equipped with an external mini jack located on the package. This is for those wanting to supply power to the ACF-3000DM-A for a longer period than the internal battery life will allow. An external DC power supply is available for this purpose but is sold as an option . The power required is +3.0VDC/10mA. FLEXIBLE AC CURRENT TRANSDUCER Fig. 1 - ACF-3000DM ELECTRONICS PACKAGE Fig. 2a - ACF-5A: OUTPUT SIGNAL Fig. 2b - ACF-5CE: OUTPUT SIGNAL SUPPLIED ADAPTER FOR THE DM-IITM SUPPLIED ADAPTER FOR DM-II PRO & DM-II CE 5 The ACF-3000DM-A design utilizes the light weight and flexibility of the Flexible AC Current Transducer. This transducer is a versatile current probe that may be wrapped around most conductors. Its application versatility and highvoltage isolation rating clearly distinguish the ACF-3000DM from other current measuring methods. The measuring transducer is constructed from nonferrous materials, minimizing any circuit loading. Note: The ACF-3000DM-A will produce twice the output if you wrap the transducer around the conductor twice. The frequency response of the ACF-3000DM-A is wide compared to conventional CTs. This allows the user to monitor a much wider range of line harmonic components than conventional CTs allow. The ACF-3000DM-A was designed to be very flexible, larger in aperture and smaller in cross section than many conventional CTs. This allows measurement in tight places as never before possible. OPERATION LATCH Fig. 4 - LATCH OPENED ELECTRONICS PACKAGE Fig. 3 - ACF-3000 DM-A Fig. 5 - LATCH CLOSED 6 The ACF-3000DM-A was designed to allow the operator to connect this measurement device around a conductor without disconnecting the conductor as many CTs presently demand. The Flexible AC Current Transducer is installed around the conductor with the molded-in arrow on the latch (Fig. 4) pointing in the direction of conventional current flow. Conventional current flow is defined as current flowing from the positive to the negative potential, or in case of AC current the arrow should face the load. The Flexible AC Current Transducer must be installed with the interconnection cable on the outside of the loop when the latch is engaged. The polarity arrow, the double insulation, and the warning symbols will all be on the outside of the loop. There is minimal shock hazard using the ACF-3000DM-A, as the transducer does not generate high voltages at low frequencies. Each transducer has been Hi-Pot tested to several thousand volts with no voltage breakdown. This particular characteristic allows high-current measurement (with a wide frequency bandwidth) of conductors at less than 600VAC potential to earth. Do not exceed the minimum bending radius of the Flexible AC Current Transducer when installing the transducer around the conductor. Exceeding the bending radius will degrade the measurement accuracy. Make sure the Flexible AC Current Transducer and its output cable are clean before installing them around the conductor. If the transducer and cable are not clean, the contaminants on them may provide a conductive path for a high-voltage breakdown. Also, check the transducer and output cable for cuts and abrasions. Do not use the transducer if damaged. To measure AC current, open the ACF-3000DM-A by squeezing the latch, encircle the conductor to be measured, then snap the ACF-3000DM-A ends together (Fig. 4). Select desired amps range using the switch on the side of the electronics package (Fig. 2). 7 Connect the ACF-3000DM-A output cable to your measuring instrument using an adapter. Set up the ACF-3000-DM-A range to either 300 or 3000A respective to the setup on the measuring instrument Example: Range (Amps) <300 <3000 Proper Setup on the DM-II ACF3000 ACF3000 300 3000 Proper Setup on the ACF3000-DM-A 300 3000 Output: 300ARange: 1.0mVAC/Amp 3000A Range: 0.1mVAC/Amp Return the ACF-3000 range switch to the OFF position when measurement is completed to preserve battery life. MAINTENANCE Preventive maintenance primarily consists of cleaning the transducers and cables to prevent surface contamination. Use a mild detergent and water to clean the transducers and cables. Remove the detergent with clear water, then wipe dry with a clean cloth. Note: The use of solvents as cleaners is not recommended unless thoroughly tested and found harmless to all surfaces and parts. Do not submerse current transducer into water or other fluids. 8 BATTERY REPLACEMENT 1) Using a coin, turn a lock from close position marked as to open marked as 2) Open the cover of the battery compartment by lifting it. 3) Replace batteries (note the polarization marked on the bottom of the battery compartment). 4) Replace the cover of the battery compartment. 5)Turn a lock from open to close position ! ! SAFETY WARNING ! ! Before removing the battery cover, make sure that the Flexible AC Current Transducer is removed from around any active conductor. Fig. 6 - BACK OF ACF-3000DM-AW/ BATTERY COVER REMOVED 9 SPECIFICATIONS Measuring Ranges: Output Sensitivity: Accuracy: (at 25C) Frequency Range: Phase Error: Linearity: Position Sensitivity: External Field: Minimum Load: Noise Level: Operating Temperature: Storage Temperature: Gain Variation: Common Mode Voltage: Safety: EMC: Enclosure: Material: Output Connections: Weight: 300A/3000A 1mV/0.1mV/A (AC coupled) 1% of range 10Hz to 5kHz 1 (45 to 65 Hz), 10 (at 5 kHz) 0.2% of reading from 10% to 100% of range 2% of range, cable >25mm (1") from coupling 1% with cable >200mm (8") from head 100kW for specified accuracy 1.0mV rms (0.3% of range) -20C to 85C (-4F to 185F) Electronics -20C to 85C (-4F to 185F) Electronics 0.08%/C Voltage between the Output the Earth must not exceed 30V 2 x AA/MN1500 LR6 (1.5V) batteries 4000 hours, 3000 hours typical (4 months cont.) Red LED flashing Battery eliminator, via 2.1mm connector, 3V DC Socket type A16M500 BS EN61010-1: 1993, 600V CATIII Pol. Deg 2 EN61326: 1998 IP5X, Flame retardant UL94-VO rated Valox 357 X Hypotronics connector type DO1EEB306FST 0.19 kg (0.4 lb) Measuring Head Cable length: Cable Diameter: Bend Radius: Connecting Cable: Material: Operating Temperature: Storage Temperature: Safety: Weight: 610mm (24 inches), double insulated 14.3mm (0.562 inches) 38.1mm (1.5 inches) minimum 2m (78.7 inches) long, double insulated TPE rubber, Polypropylene, UL94-VO rated -20C to +90C (-4F to 194F) Head -40C to +105C (-40F to 221F) Head BS EN 61010-1: 1993, 600V CAT III Pol. Deg 2 0.18kg (0.4 lb) Power Supply: Battery Life: Low Battery Indication: External Power: 10 11 AMPROBE(R) Miami, Florida Phone: 305-423-7500 Fax: 305-423-7554 www.amprobe.com 12 Printed in U.K. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: AMPROBE: ACF-3000DM-A