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. These warnings are
identied by the following symbol:
The intended use is for the measurement of AC current. Teledyne Test Tools accepts no
responsibility for any damage resulting from careless use, or failure to observe these
instructions.
TECHNICAL SPECIFICATION
Peak CurrentRefer to ID Label
Peak Output Voltage±6V (corresponding to ±Peak Current Rating)
Output Cable0.5m BNC to BNC 50Ω cable
In order to maintain safety, the BNC terminal must be connected to
equipment that is separated from hazardous voltages by at least
double insulation.
DC Socket Type1.3mm jack socket – Centre Positive Tip
The unit should only be powered by the supplied mains adaptor.
Adaptor Supply Voltage100 – 240VAC
T3RC0060-LF:Cat III 600V
T3RC0120-UM:Cat II 600V
T3RC0300-UM:Cat II 600V
T3RC0600-HF:Cat III 600V
T3RC3000-HF:Cat III 600V
T3RC3000-LF:Cat III 1000V
T3RC6000-LF:Cat III 1000V
60mA @12VDC – using standard alkaline battery
130mA @ 12VDC – using NiMH Rechargeable battery
Adaptor Supply Frequency50 - 60Hz
Adaptor Supply Current450mA Max @ 100VAC Input
Supply Voltage Fluctuationup to 10%
Operation with Battery
Using 4 x 1.5V AA alkaline Battery Life: 25hrs typ.
Every eort has been made to ensure that the T3RC0300-UM and T3RC0120-UM are as robust as
possible. To achieve such an extremely thin Rogowski coil the T3RC0300-UM and T3RC0120-UM
are 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.
This may damage the coil insulation.
Take care not to put any force onto the cable attached to the
coil. This may damage the coil.
When not in use return the coil to its protective case.
The minimum bend radius of this coil is 10mm. This is the minimum radius that the
coil can be bent without causing damage or shortening its life.
T3RC0300-UM and T3RC0120-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 or T3RC0120-UM must NOT BE USED if
there are signs of damage.
When bending the exible 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 and T3RC0120-UM Ultra Mini this is 1.2kV 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. The coil has a friction t, the coil is fully inserted when
the user feels they can ease the coil free end into the ferrule no further.
The voltage ratings are appropriate for intermittent use of the T3RC0300-UM or
T3RC0120-UM as a test instrument and not for continuous use in a permanent installation.
The ratings are derived from the following standard test: Coils rated for 1.2kV peak are
ash tested for one minute at 3.0kVrms using a 50Hz sine-wave voltage.
For permanent installation the coil should be situated such that corona, which will
eventually damage the coil insulation, cannot occur. For information regarding permanent
installation of Teledyne Test Tools Rogowski coils on high voltage equipment please
consult Teledyne Test Tools.
The user must ensure that the absolute maximum rated di/dt is not exceeded.
THE INTEGRATOR
The T3RC0300-UM and T3RC0120-UM must only be used with oscilloscopes or
monitoring equipment which have their BNC INPUTS PROPERLY GROUNDED.
To achieve such an extremely thin Rogowski coil, the T3RC0600-HF and T3RC3000-HF are
necessarily delicate.
Every eort 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.
Correct Coil Insertion
The coil is correctly positioned when the
free end of the coil is fully inserted into
the ferrule.
When correctly inserted, the ferrule will
grip the coil and hold it securely.
Never force the free end of the coil into the ferrule.
This may damage the coil insulation.
Take care not to put any force onto the cable attached to the coil.
This may damage the coil.
When not in use return the Rogowski coil to its protective case.
The minimum bend radius of this coil is 14mm. This is the minimum radius that the coil
can be bent without risk of damaging the coil or shortening its life.
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 exible 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. 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. The coil has a friction t, the coil is fully inserted
when the user feels they can ease the coil free end into the ferrule no further.
The voltage ratings are appropriate for intermittent use of the T3RC0600-HF
and T3RC3000-HF as a test instrument and not for continuous use in a
permanent installation.
The ratings are derived from the following standard test: Coils rated for 5kV peak are
ash tested for one minute at 8kVrms using a 50Hz sine-wave voltage.
For permanent installation the coil should be situated such that corona, which will
eventually damage the coil insulation, cannot occur. For information regarding
permanent installation of Teledyne Test Tools Rogowski coils on high voltage
equipment please consult Teledyne Test Tools.
The user must ensure that the absolute maximum rated di/dt is not exceeded
THE INTEGRATOR
The T3RC0600-HF and T3RC3000-HF must only be used with oscilloscopes or
monitoring equipment which have their BNC INPUTS PROPERLY GROUNDED.
T3RC0060-LF, 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.
To remove the probe from the device under test rst loosen the ferrule lock nut then remove the
coil end from the ferrule.
The locking mechanism must not be actuated at temperatures below 0 C.
Care must be taken not to over-tighten the locking nut.
When not in use return the Rogowski probe to its protective case.
T3RC0060-LF, T3RC3000-LF and T3RC6000-LF SAFETY
AND PRE-USE CHECKS
The integrity of the insulation around the Rogowski coil itself must be VISUALLY
INSPECTED before use. The T3RC0060-LF, T3RC3000-LF and T36000-LF must
NOT BE USED if there are signs of damage.
When bending the exible 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 T3RC3000-LF and T36000-LF this is 10kV peak, for the
T3RC0060-LF this is 2kV. 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.
The voltage ratings are appropriate for intermittent use of the T3RC0060-LF,
T3RC3000-LF and T3RC6000-LF as a test instrument and not for continuous
use in a permanent installation.
The ratings are derived from the following standard test: Coils rated for 10kV peak
are ash tested for one minute at 15kVrms using a 50Hz sine-wave voltage.
For permanent installation the coil should be situated such that corona, which will
eventually damage the coil insulation, cannot occur. For information regarding
permanent installation of Teledyne Test Tools Rogowski coils on high voltage
equipment please consult Teledyne Test Tools.
The user must ensure that the absolute maximum rated di/dt is not exceeded.
THE INTEGRATOR
The Rogowski probe must only be used with oscilloscopes or monitoring equipment
which have their BNC INPUTS PROPERLY GROUNDED.
SAFETY AND PRE-USE CHECKS FOR ALL TELEDYNE TEST
TOOLS ROGOWSKI PROBES
The Teledyne Test Tools Rogowski probes do not provide protection of
the user from electric shock whilst applying or removing the probe from
HAZARDOUS LIVE conductors. Additional protective means are
necessary to avoid electric shock from HAZARDOUS LIVE conductors
which cannot be de-energised.
If HAZARDOUS LIVE voltages are present and accessible in the
installation, appropriate protective equipment must be used.
The Rogowski coil must not be used if the coil outer layer is damaged or in
any way compromised.
The Teledyne Test Tools Rogowski probes must only be used in
conjunction with properly earthed test equipment.
If the Teledyne Test Tools Rogowski probes are used in a manner not
specied by the manufacturer the protection provided by the equipment
may be impaired.
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. Healthy batteries
are indicated by the GREEN LED. If the LED is RED the batteries are depleted and must be
replaced.
When the DC voltage is present the batteries are inoperative.
REPLACING THE BATTERIES
Low battery is indicated by a red LED located near the power switch. To replace the batteries,
switch-o the Rogowski probe integrator, remove the battery cover and replace with appropriate
batteries for your Teledyne Test Tools Rogowski probe type.
It is recommended that the circuit under test is de-energised or the probe is removed from the
test circuit before replacing the batteries.
SWITCHING ON
Before installing the Rogowski probe and taking a measurement refer to SAFETY AND
PRE-USE CHECKS and HANDLING INSTRUCTIONS to ensure safe operation of
your Rogowski probe.
Your Rogowski probe must only be used with oscilloscopes or monitoring equipment
which have their BNC inputs properly grounded.
The user is advised to de-energise the circuit under test rst. If the probe is being tted
to a live circuit the user must ensure the use of appropriate personal protective
equipment.
1. Connect the BNC output of the transducer to your grounded oscilloscope or current
monitoring equipment.
2. Having carried out the VISUAL INSPECTION of the Rogowski coil, unclip the coil and wrap
it around the de-energised conductor under test.
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. The settling period is
dependent on warm-up time and the low frequency bandwidth.
OBTAINING THE BEST MEASUREMENT
The Rogowski coil should be positioned so that the conductor under test is encircled by the coil
but is not adjacent to the cable attachment (see picture below). The diagram shows the direction
a positive current should pass through the coil loop in order to obtain a positive output voltage.
The Teledyne Test Tools Rogowski probe has been calibrated with the conductor near the
centre (position A), and this is the ideal position for accuracy.
For the best high frequency performance, the centre of the current should lie on the line shown
A to B, where B is half way around the circumference of the coil.
B
I current
into page
A
KEEP CONDUCTORS
AWAY FROM
SHADED AREA
SENSITIVITY TO EXTERNAL CURRENTS AND VOLTAGES
The sensitivity of the Teledyne Test Tools Rogowski probes to currents that are outside the closed
loop of the Rogowski coil is very small, provided that the external currents are less than the
current rating of the Teledyne Test Tools Rogowski probes or that such currents are relatively
distant from the coil. In the vicinity of a multi-turn conductor the eects are far stronger than from
a single conductor carrying the same current, and such positions should be avoided.
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 elds, it is recommended to quantify the output
of the Teledyne Test Tools Rogowski probes when close to (but not encircling) the conductor
under test. This will reveal the magnitude of any unwanted responses to currents close to, but
outside, the coil.
OUTPUT CABLES
Your Teledyne Test Tools Rogowski probe has been supplied with a 50ohm BNC to BNC output
cable. It is possible to use longer cables and these should be of a 50ohm single screened
co-axial cable type.
Teledyne Test Tools does not consider the use of extension cables to be problematic from the
noise viewpoint but consideration should be given to the routing of very long cables.
CLEANING AND DECONTAMINATION
To prevent surface contamination the Rogowski coil and cable should be inspected regularly.
The Rogowski coil must be disconnected from any external circuit and turned OFF prior to
cleaning. To clean the coil and cable use a mild detergent and a damp cloth to remove any
contamination, wipe dry with clean cloth to remove the detergent and dry thoroughly before
placing back into service.
Teledyne Test Tools accepts no responsibility for the use of any other cleaning solvents or
cleaning methods.
RETURNING YOUR ROGOWSKI PROBE FOR RECALIBRATION OR
REPAIR
To return the Rogowski probe to Teledyne Test Tools for repair or recalibration please contact
Teledyne LeCroy in advance for shipping instructions (refer to information on the back page for
contact details and our service procedure).
Teledyne LeCroy certies compliance to the following standards as of the date of
publication. As standards evolve, these may no longer be current. See the Declaration of
Conformity shipped with your product for current certications.
EMC Compliance
EC Declaration of Conformity - EMC
The current probes meet the intent of EC Directive 2014/30/EU for Electromagnetic
Compatibility. Compliance was demonstrated to the following specications as listed in
the Ocial Journal of the European Communities:
EN 61326-1:2013 EMC requirements for electrical equipment for measurement, control,
and laboratory use.
ELECTROMAGNETIC EMISSIONS:
EN 55011/A1:2010 Radiated and Conducted Emissions Group 1 Class A
Australia & New Zealand Declaration of Conformity - EMC
The probe complies with the EMC provision of the Radio Communications Act per the
following standards, in accordance with requirements imposed by the Australian
Communication and Media Authority (ACMA):
AS/NZS CISPR 11:2009/A1:2010, EN 55011:2009/A1:2010 Radiated and Conducted
Emissions, Group 1, Class A.
Safety Compliance
EC Declaration of Conformity – Low Voltage
The probe meets the intent of EC Directive 2014/35/EU for Product Safety.
Compliance was demonstrated to the following specications as listed in the Ocial
Journal of the European Communities:
IEC/EN 61010-1:2010 + A1:2019 Safety requirements for electrical equipment for
measurement, control, and laboratory use – Part 1: General requirements
IEC/EN 61010-2-032:2019 Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use – Part 2-032: Particular Requirements for
Hand-Held and Hand Manipulated Current Sensors for Electrical Test and Measurement.
Environmental Compliance
End-Of-Life Handling
The probe is marked with this symbol to indicate that it complies with the
applicable European Union requirements to Directives 2012/19/EU on
Waste Electrical and Electronic Equipment (WEEE).
The probe is subject to disposal and recycling regulations that vary by
country and region. Many countries prohibit the disposal of waste electronic
equipment in standard waste receptacles. For more information about
proper disposal and recycling of your Teledyne LeCroy product, visit
The product and its accessories conform to the 2011/65/EU RoHS2 Directive inclusive of
any further amendments or modications of said Directive.
See package inserts for other environmental certications.
CHINA RoHS 2
Unless otherwise specied, all the materials and processes are compliant with the latest
requirements of China RoHS 2. The hazardous substances contained in the instrument
are disclosed in accordance with the standards SJ/T 11364-2014 (Marking for the
restricted use of hazardous substances in electronic and electrical products) and GB/T
26572-2011 (Requirements on concentration limits for certain restricted substances in
electrical and electronic products). The instrument is marked with an appropriate
Environmental Friendly Use Period (EFUP) symbol. The packaging materials include the
appropriate recycling labels. The below substance disclosure tables (in Chinese and
English languages) provide the required compliance information.
Teledyne LeCroy warrants this oscilloscope accessory for normal use and operation within
specication for a period of one year from the date of shipment. Spare parts, replacement
parts and repairs are warranted for 90 days. In exercising its warranty, Teledyne LeCroy, at
its option, will either repair or replace any assembly returned within its warranty period to
the Customer Service Department or an authorized service center. However, this will be
done only if the product is determined by Teledyne LeCroy’s examination to be defective
due to workmanship or materials, and the defect is not caused by misuse, neglect,
accident, abnormal conditions of operation, or damage resulting from attempted repair or
modications by a non-authorized service facility.
The customer will be responsible for the transportation and insurance charges for the
return of products to the service facility. Teledyne LeCroy will return all products under
warranty with transportation charges prepaid.
This warranty replaces all other warranties, expressed or implied, including but not limited
to any implied warranty of merchantability, tness or adequacy for any particular purposes
or use. Teledyne LeCroy shall not be liable for any special, incidental, or consequential
damages, whether in contract or otherwise.
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 eectively. Oscilloscopes are tools used by
designers and engineers to measure and analyze complex
electronic signals in order to develop high-performance
systems and to validate electronic designs in order to improve
time to market.
The Teledyne Test Tools brand extends the Teledyne LeCroy
product portfolio with a comprehensive range of test
equipment solutions. This new range of products delivers
a broad range of quality test solutions that enable engineers to
rapidly validate product and design and reduce time-tomarket. Designers, engineers and educators rely on Teledyne
Test Tools solutions to meet their most challenging needs for
testing, education and electronics validation.
Location and Facilities
Headquartered in Chestnut Ridge, New York, Teledyne
Test Tools and Teledyne LeCroy has sales, service and
development subsidiaries in the US and throughout
Europe and Asia. Teledyne Test Tools and Teledyne LeCroy
products are employed across a wide variety of industries,
including semiconductor, computer, consumer electronics,
education, military/aerospace, automotive/industrial, and
telecommunications.