AC / DC CURRENT CLAMP User Guide
Contents
1. ACpeak or DC 30 A 500 A 60 s 100 mV A 1 of reading 2 mA 1 mA 0 01 of reading C Frequency range ou DC to 100 kHz 0 5 dB Power supply 0 008 9 V Alkaline battery PP3 MN 1604 or IEC6LR61 Load impedance minimum gt 100 kQ and lt 100 pF General data Conductor SiZ 05 25 mm diameter Output cable and connectors 2 m long coax terminated with safety BNC connector Operating temperature 0 C to 50 C Storage temperature with battery removed 05 20 C to 85 C Accuracy quoted is for conductor in centre of aperture 0 N I S 5 5 g x 10 O S c 15 G 20 10 100 1000 10000 10000 Gain Frequency Hz ececeeeee Phase i HHH o ono Q 2 Jaws Tactile barrier Battery cover Battery cover screw Jaw trigger On off switch Auto zero button LED O o NDA O N pikita Fig 1 Phase shift in degrees Conventional current direction OPERATING INSTRUCTIONS Switch On When the clamp is switched on to the required measuring range the green LED will illuminate The LED starts flashing when the battery voltage is too low for normal operation and warns the user that it requires changing This procedure is described below Auto Zero T2. ICO TA189 AC DC CURRENT CLAMP OUTPUT 100mViaA TA189 CURAN CLAMP pico gt Technology User Guide SAFETY The following symbols appear on the product Attention Refer to manual Application around and removal from UNINSULATED HAZARDOUS LIVE conductors is permitted ri Double reinforced insulation Complies with the relevant European standards Do not dispose of this product as unsorted municipal waste Contact a qualified recycler for disposal gt X a ON e Read all instructions completely before using this product To avoid electric shock e Use caution during installation and use of this product High voltages and currents may be present in circuit under test e This product must be used only by qualified personnel practising applicable safety precautions e Do not use product if damaged Always connect clamp to display device before it is installed around the conductor e Always ensure that the clamp is removed from any live electrical circuit and that leads are disconnected before removing the battery cover Do not hold the clamp anywhere beyond the tactile barrier see Fig 1 SPECIFICATION Electrical data All accuracies stated at 23 C 1 C Nominal current Measuring range s Overload capacity Output sensitivity PCCUVECY eccirni RESOIUTION cccceeeeeeeeees Gain variation cc8 30 A
3. amp fails during the warranty period we shall at our discretion repair or replace it with a new or reconditioned unit provided we are satisfied that the failure is due to defective material or workmanship To make a claim under warranty return the clamp to us postage prepaid with a description of the defect The use of a battery other than that specified invalidates this warranty Goods alleged by the buyer to be defective shall not form the subject of any claim for injury loss damage or any expense howsoever incurred whether arising directly or indirectly from such alleged defects other than death or personal injury resulting from the seller s negligence No condition is made or to be implied nor is any warranty given or to be implied as to the life or wear of goods supplied or that they will be suitable for any particular purpose or for use under specific conditions notwithstanding that such purpose or conditions may be made known to the seller Pico Technology Limited James House Colmworth Business Park St Neots Cambridgeshire PE19 8YP United Kingdom Tel 44 0 1480 396395 Fax 44 0 1480 396296 Technical Support support picotech com
4. g the on off switch and disconnect the output leads from external equipment Loosen the captive screw which secures the battery cover Lift the cover through 30 and pull it clear of the clamp body as shown in Fig 1 Replace the battery re fit the battery cover and fasten the screw Fit only 9 V battery type PP3 Alkaline MN 1604 SAFETY STANDARDS EN 61010 1 2010 EN 61010 2 032 2012 300 V Cat III Pollution Degree 2 EMC Standards EN 61326 2 2 2006 ROHS and WEEE compliant This product is designed to be safe under the following conditions indoor use altitude up to 2000 m temperature 0 C to 50 C maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 40 relative humidity at 50 C Use of the clamp on uninsulated conductors is limited to 300 V ACrms or DC and frequencies below 1 kHz Safety in its use is the responsibility of the operator who must be a suitably qualified or authorised person Ensure that your fingers are behind the protective barrier see Fig 1 when using the clamp Always inspect the clamp and lead for damage before use To avoid electric shock keep the clamp clean and free of surface contamination Use a cloth moistened with isopropyl alcohol to clean the clamp Ensure that the clamp is completely dry before using WARRANTY Your current clamp is guaranteed for one year from the date of purchase against defective material or workmanship If the cl
5. he output zero offset voltage of the clamp may change due to thermal shifts and other environmental conditions Select the required measuring range and to null the output voltage depress the Auto Zero button Ensure that the clamp is away from the current carrying conductor while the clamp is being nulled Current Measurement 1 Switch on the clamp using the on off switch and check that the green LED is lit 2 Connect the output lead to the oscilloscope 3 Zero the clamp using the Auto Zero button 4 Clamp the jaws of the clamp round the conductor ensuring a good contact between the closing faces of the jaws 5 Observe and take measurements as required Positive output indicates that the current flow is in the direction shown by the arrow on the clamp Auto Power OFF In order to save battery life the clamp will automatically switch itself off after approximately 10 minutes To disable the Auto power off function switch off the clamp and switch on while pressing the Auto Zero button The red LED will illuminate and the clamp will stay ON until switched off again Battery Replacement The green or red LED will flash when the minimum operating voltage is approached refer to Fig 1 Use the following procedure SAFETY WARNING Before removing the battery cover ensure that the clamp is disconnected from the oscilloscope and remote from any live electrical circuit Unclamp the clamp from the conductor turn it off usin
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