Rogowski Current Probes User Manual T3RC0300-UM T3RC0600-HF T3RC3000-HF T3RC3000-LF T3RC6000-LF
INTRODUCTION ........................................................................................3 TECHNICAL SPECIFICATION .......................................................................3 STANDARDS AND APPROVALS ..................................................................5 ROGOWSKI PROBES OVERVIEW ................................................................6 T3RC0300-UM HANDLING INSTRUCTIONS .................................................7 T3RC0300-UM SAFETY AND PRE-USE CHECKS ......
INTRODUCTION The Teledyne Test Tools Rogowski Current Waveform Transducers combines high bandwidth performance with minimal disruption to the circuit under test. These instructions must be followed whenever the unit is used. They are intended to help you obtain the best and safest performance from the transducer. Throughout these instructions there are a number of warnings which must be observed to ensure safe operation of the Teledyne Test Tools Rogowski probe.
Accuracy (typ.) (5% to 100% Peak Current) Calibration Nominally ±0.2% with the conductor central in the Rogowski loop. See the calibration certificate for further details. Positional Accuracy T3RC0300-UM T3RC0600-HF T3RC3000-HF ±2% variation of accuracy with conductor position in the loop (see ‘Obtaining The Best Measurement’) T3RC3000-LF T3RC6000-LF ±1% variation of accuracy with conductor position in the loop (see ‘Obtaining The Best Measurement’) Linearity ±0.
Operation with External Adaptor DC Supply Voltage DC Quiescent Current DC Socket Type 12Vdc (+/-10%) 60mA @12VDC – using standard alkaline battery 130mA @ 12VDC – using NiMH Rechargeable battery 1.3mm jack socket – Centre Positive Tip The unit should only be powered by the supplied mains adaptor. Adaptor Supply Voltage 100 – 240VAC Adaptor Supply Frequency 50 - 60Hz Adaptor Supply Current 450mA Max @ 100VAC Input Supply Voltage Fluctuation up to 10% Operation with Battery Using 4 x 1.
Teledyne Test Tools Rogowski Probes Overview 1. Rogowski Coil (Probe) 2. Probe ‘Free End’ 3. Ferrule 4. Connecting Cable 5. DC Power Socket 6. DC Power Status LED 7. Enclosure 8. BNC Output Socket 9. 4 x AA batteries 10.Status Indicator LED GREEN = ON RED = Battery LOW 11.
T3RC0300-UM HANDLING INSTRUCTIONS Every effort has been made to ensure that the T3RC0300-UM is as robust as possible. To achieve such an extremely thin Rogowski coil the T3RC0300-UM is necessarily delicate. To prolong the life of the coil please observe the following handling instructions. When fully inserted the ferrule will grip the coil. OPEN IN THIS DIRECTION When clipping or unclipping the coil, hold the ferrule as shown Never force the free end of the coil into the ferrule.
T3RC0300-UM SAFETY AND PRE-USE CHECKS The integrity of the insulation around the Rogowski coil itself must be VISUALLY INSPECTED before use, and the T3RC0300-UM must NOT BE USED if there are signs of damage. When bending the flexible coil around a conductor, avoid tight bends and sharp edges that could damage the coil. The voltage rating (safe PEAK working voltage) is clearly labelled on the cable adjacent to the coil. For the T3RC0300-UM Ultra Mini this is 1.2kV peak.
T3RC0600-HF AND T3RC3000-HF HANDLING INSTRUCTIONS To achieve such an extremely thin Rogowski coil, the T3RC0600-HF and T3RC3000-HF are necessarily delicate. Every effort has been made to ensure that the T3RC0600-HF and T3RC3000-HF are as robust as possible. To prolong the life of the coil please observe the following handling instructions. Releasing The Coil The free end of the coil is unclipped by applying gentle pressure in the direction shown.
T3RC0600-HF and T3RC3000-HF SAFETY AND PRE-USE CHECKS The integrity of the insulation around the Rogowski coil itself must be VISUALLY INSPECTED before use, and the T3RC0600-HF and T3RC3000-HF must NOT BE USED if there are signs of damage. When bending the flexible coil around a conductor, avoid tight bends and sharp edges that could damage the coil. The voltage rating (safe PEAK working voltage) is clearly labelled on the cable adjacent to the coil. For the T3RC0600-HF and T3RC3000-HF this is 5kV peak.
T3RC3000-LF AND T3RC6000-LF HANDLING INSTRUCTIONS The coil free end is fully inserted in the ferrule when the user feels the free end of the coil engage with the internal click-in mechanism inside the ferrule. Visual indication that the coil mechanism is fully inserted is provided by the black coil marker situated near the end of the coil, as shown below: Once the free end of the coil is fully engaged in the ferrule, turn the ferrule lock nut to lock the coil end in position.
The voltage rating (safe PEAK working voltage) is clearly labelled on the cable adjacent to the coil. For the T3RC3000-LF and T36000-LF this is 10kV peak. Never use at voltages greater than this value. Voltage ratings are only valid if the ‘free end’ of the coil is fully inserted into the socket, and remains fully inserted during use i.e. right up to the black indicator line on the free end of the coil.
POWER OPTIONS The Teledyne Test Tools Rogowski probes can be powered by an external DC source or by battery. External Supply The Teledyne Test Tools Rogowski probes can be powered by an external DC supply. The DC voltage must be 12V(±10%) using a centre positive connector. When the DC supply is present a RED indicating LED adjacent to the socket is illuminated. Standard Alkaline Batteries Four fully charged AA alkaline batteries provide approx. 25 hours operation.
3. Insert the ‘free end’ of the coil fully inside the ferrule. 4. Re-energise the conductor. 5. Use the push button to switch ON by pressing and releasing the button, and to turn OFF by depressing the button fully; the LED indicates that the transducer is ON when the LED is GREEN. 6. After switch-on the Teledyne Test Tools Rogowski probes, they may require a settling period of up to 2 minutes before providing a correct current measurement.
If there is a surface with a high voltage very close to the coil and the voltage is subject to high rates of change or high frequency oscillations in the MHz range, then measurement error can arise due to capacitive coupling to the coil. To check for any unwanted response to adjacent fields, it is recommended to quantify the output of the Teledyne Test Tools Rogowski probes when close to (but not encircling) the conductor under test.
ABOUT TELEDYNE TEST TOOLS Company Profile Teledyne LeCroy is a leading provider of oscilloscopes, protocol analyzers and related test and measurement solutions that enable companies across a wide range of industries to design and test electronic devices of all types. Since our founding in 1964, we have focused on creating products that improve productivity by helping engineers resolve design issues faster and more effectively.
