Instruction Manual CP500 Current Probe
CP500 Current Probe Instruction Manual January 2013
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Instruction Manual TABLE OF CONTENTS Safety Instructions ..........................................................................................................................................................1 Symbols .................................................................................................................................................................... 1 Precautions ...............................................................................................................
CP500 Current Probe Functional Check .................................................................................................................................................... 11 Check LF Accuracy ................................................................................................................................................. 12 Adjustment Procedure .......................................................................................................................................
Instruction Manual Safety Instructions This section contains instructions that must be observed to keep this oscilloscope accessory operating in a correct and safe condition. You are required to follow generally accepted safety procedures in addition to the precautions specified in this section. The overall safety of any system incorporating this accessory is the responsibility of the assembler of the system.
CP500 Current Probe Never install or remove the probe on bare conductors which are energized. The transformer core and shield are grounded but not insulated and may contact the conductor when the locking lever is open. To avoid short circuits and accidents that could result in injury or death, use the CP500 current probe only with conductors carrying 600 V (CAT II) or 300 V (CAT III) or less.
Instruction Manual Overview Description The CP500 uses a combination of Hall effect and transformer technology which enables measurements to be made on DC, AC and impulse currents. It has a 2 MHz bandwidth and is designed to measure continuous currents up to 500 Amp. The probe can be used with a WaveRunner, WavePro, or LC series oscilloscope with firmware 4.3.0.0 or higher. With the ProBus interface, the CP500 becomes an integral part of the oscilloscope.
CP500 Current Probe Operation Precautions The sensor head is a precision assembly consisting of a molded component with a ferrite core and a Hall effect element. It may be damaged if subjected to sudden changes in temperature, mechanical strain or shock. The mating surfaces of the sensor are precision ground and should be treated with care. If there is any type of dust or dirt on the mating surfaces of the sensor head, measurements may be impaired.
Instruction Manual Operation with a Teledyne LeCroy Oscilloscope The probe can be controlled through the Vertical Setup dialog for the channel to which the probe is connected. Turning the VOLTS/DIV knob will control the oscilloscope’s scale factor to give full dynamic range.
CP500 Current Probe An Auto Zero is automatically performed as part of the degauss cycle. NOTE: Never install or remove the probe on bare conductors which are energized. The transformer core and shield are grounded but not insulated and may contact the conductor when the locking lever is open.
Instruction Manual Figure 2. Insertion Impedance B In a closed loop AC/DC current probe, the magnetizing inductance term drops out because the bucking coil prevents the core from being magnetized (Figure 2). In addition to the impedance resulting from probe insertion, any loop wire added to the conductor to gain access to the conductor will increase the total impedance of the conductor.
CP500 Current Probe Service Strategy Defective probes must be returned to a Teledyne Lecroy service facility for diagnosis and exchange. A defective probe under warranty will be replaced with a factory refurbished probe. A probe that is not under warranty can be exchanged for a factory refurbished probe. A modest fee is charged for this service. A defective probe must be returned in order to receive credit for the probe core.
Instruction Manual Returning a Defective Probe Contact your local Teledyne Lecroy sales representative to find out where to return the product. All returned products should be identified by model number and serial number. Provide your name and contact number and if possible describe the defect or failure. In case of products returned to the factory, a Return Authorization Number (RAN) must be used. Contact your nearest Teledyne Lecroy office, or the New York Customer Care Center, to receive a RAN.
CP500 Current Probe Performance Verification This procedure can be used to verify the warranted characteristics of the CP500 Current Probe. The recommended calibration interval for the model CP500 Current Probe is one year. The complete performance verification procedure should be performed as the first step of annual calibration. Performance verification can be completed without removing the probe covers or exposing the user to hazardous voltages.
Instruction Manual Description Minimum Requirements Test Equipment Examples Function Generator 50 Hz sine wave output 3 Vrms into 50Ω Agilent Technologies 33120A or Stanford Research Model DS340 Calibration Fixture, 500 Turn Loop 500 Turn loop in series with 0.5Ω ± 0.
CP500 Current Probe 7. Degauss the probe by touching DEGAUSS (on the CP500 dialog), then OK. 8. Verify that “Degaussing CP500 probe...” is displayed at the top of the screen and no error message remains displayed. Check LF Accuracy Figure 3. LF Accuracy Test set up. 1. Set the Function generator to 50 Hz sine wave. Output voltage at 3 Vrms with 50Ω output. 2. Remove the CP500 from the oscilloscope and reconnect using the ProBus extension cable.
Instruction Manual 7. Open the CP500 locking lever and position the probe input around the 500 Turn loop. Close and LOCK the locking lever. 8. Adjust the Function generator voltage until the voltage measured at the ’Current Sense’ terminals (DMM #2) reads 50 mV ±0.05 mV. (This corresponds to 500 A at the probe head). 9. Record the voltage measured by DMM #1 on the Test Record. 10. Verify that the measured voltage is between 0.495 volt and 0.505 volt.
CP500 Current Probe Table 2. List of Adjustment Procedure equipment. Description Minimum Requirements Test Equipment Examples Wide Band Oscilloscope Minimum 200 MHz bandwidth ProBus interface equipped Software version 4.3.0.0 or higher Teledyne LeCroy WaveRunner 6030A Digital Multimeter (2 required) DC: 0.
Instruction Manual Adjust LF Accuracy Figure 4. LF accuracy adjustment set up. 1. Set the Function Generator to 50 Hz, sinewave output at 1.7 Vrms with 50 Ω output. 2. Connect BNC male of ProBus extension to DMM #1 using BNC Female to Dual Banana adapter. 3. Using banana patch cords, connect the 'V Source' and 'V Return' terminals of the 500 Turn Calibration Loop, to the output of the Function Generator using the BNC to Dual Banana Plug Adapter output. (Refer to Figure 4.) 4.
CP500 Current Probe 9. Adjust variable resistor VR202 on the PCB until the voltage measured on DMM #1 is as close to 10X the voltage measured on DMM #2. 10. Verify that the measured voltage is between 0.495 V and 0.505 V. 11. Disconnect the probe from the test setup. 12. Re-apply the light blue product label to the probe head using the double-sided tape.
Instruction Manual Typical Characteristics Typical characteristics describe parameters which do not have guaranteed performance; however are representative of the average performance from a sample of several probes. Tests for typical characteristics are not provided in the Performance Verification procedure. Sensitivity* 200 mA/div* to 200 A/div. Scale Factor Temperature Coefficient ±2% or less.
CP500 Current Probe Physical Characteristics Dimensions Probe Length 176 mm (6.9 inch) Width 27 mm (1.1 inch) Height 69 mm (2.7 inch) Dimensions Compensation Box Length 65 mm (2.6 inch) Width 39 mm (1.5 inch) Height 24 mm (0.9 inch) Weight 650 g (22.9 oz.) Maximum diameter of conductors to be measured 6 m (19.6 ft.
Instruction Manual Graphs Figure 5. Maximum input current vs. frequency. Figure 6. Insertion impedance vs. frequency.
CP500 Current Probe Certifications This section contains the instrument’s Electromagnetic Compatibility (EMC), Safety and Environmental certifications. EMC Compliance EC Declaration of Conformity - EMC The probe meets intent of EC Directive 2004/108/EC for Electromagnetic Compatibility.
Instruction Manual CISPR 11:2003 Radiated and Conducted Emissions, Group 1, Class A, in accordance with EN61326-1:2006 and EN61326-2-1:2006. AUSTRALIA / NEW ZEALAND CONTACTS: Vicom Australia Ltd. 1064 Centre Road Oakleigh, South Victoria 3167 Australia Vicom New Zealand Ltd. 60 Grafton Road Auckland New Zealand Safety Compliance EC Declaration of Conformity – Low Voltage The probe meets intent of EC Directive 2006/95/EC for Product Safety.
CP500 Current Probe Contact Teledyne LeCroy Teledyne LeCroy Service Centers United States and Canada World Wide Corporate Office Teledyne LeCroy Corporation 700 Chestnut Ridge Road Chestnut Ridge, NY, 10977-6499, USA Ph: 800-553-2769 / 845-425-2000 FAX: 845-578-5985 teledynelecroy.com Support: contact.corp@teledynelecroy.com Sales: customersupport@teledynelecroy.
Instruction Manual Appendix A Performance Verification Test Record Photocopy this page and record the results of measurements made during the performance verification of the CP500 Current Probe on the copy. File the completed record as required by applicable internal quality procedures. The sections in the test record correspond to the parameters tested in the performance verification procedure.
CP500 Current Probe 24 922176-00 Rev A
