eta 5403 User manual

FLEXIBLE
AC CURRENT PROBES
ETA 5403
Operating Instructions

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Table of Contents
1 SAFETY………………………………………………………….2
2 INTRODUCTION.................................................................4
3 SPECIFICATIONS...............................................................5
4 OPERATION .......................................................................7
4.1 BATTERY INSTALLATION............................................7
4.2 EXTERNAL POWER SUPPLY ......................................8
4.3 MEASURING CURRENT ..............................................8
4.4 OPERATION..................................................................9
4.5 BATTERY STATUS .......................................................9
5 MAINTENANCE ................................................................ 10
6 WARRANTY...................................................................... 10
Thank you for buying this product.
For safety reasons and optimum use of this instrument
read through the operating instructions very carefully.

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1. SAFETY
The following symbols appear on the products:
Attention! Refer to Manual
Double/Reinforced Insulation
Do not apply around or remove from HAZARDOUS LIVE
conductors without additional protective means.
“Additional protective means” can be de-energizing the circuit
or wearing protective clothing suitable for high voltage work.
Do not dispose of this product as unsorted municipal waste.
Contact a qualified recycler for disposal.
Complies with the relevant European standards.

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Read all instructions completely before using this product.
To avoid electric shock:
• Use caution during installation and use of this product; high
voltages and currents may be present in circuit under test.
• This product must be used only by qualified personnel practising
applicable safety precautions.
• Wear protective clothing and gloves as required.
• Do not install this product on live conductors.
• Always de-energise circuit under test before installing flexible
measuring head. Always inspect the electronics unit, connecting
cable, and flexible probe for damage before using this product.
• Do not use product if damaged.
• Always connect electronics unit to display device before installing
the flexible measuring head.
• Never change batteries while measurement head is installed on
conductor.
• Never connect or disconnect the external power supply while the
measurement head is installed on a conductor.
• Never connect the output to any equipment with a common mode
voltage to earth greater than 30 Volts.
•Always wear protective clothing and gloves if hazardous live parts
are present in the installation where the measurement is carried
out.
• If the probe is used in a manner not specified by the manufacturer
the protection provided by the equipment may be impaired.

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2. INTRODUCTION
The ETA 5403 is an AC current probe utilising Rogowski
principle. It can be used to measure AC current up to 3000A,
when used with oscilloscopes, recorders or data loggers. The
flexible probe allows current measurements on conductors that
are hard to reach.
The probes provide a 3V full scale AC output proportional to the
current being measured with three selectable ranges.
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2
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Fig 1
1. Probe Coupling
2. Probe Output Cable
3. Flexible Current Probe
4. Power On / Range Switch
5. RED LED – Overload
6. ORANGE LED – Low Battery
7. External Power Supply Input
8. Integrator Housing
9. Output Cable

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3. SPECIFICATIONS
Measuring ranges 30A / 300A / 3000A AC
Output sensitivity 100mV / 10mV / 1mV per A (AC coupled)
Accuracy (45-65Hz) ± 1% of reading ± 0.1A 30/300A ranges
± 1% of reading ± 1A 3000A range
Minimum load 100kΩfor specified accuracy
Frequency range 10Hz to 20kHz (-1dB)
Phase (45-65Hz) <± 1°
Position sensitivity ± 2% of reading
External field ± 0.2% of range with cable >200mm (8")
from the probe
Noise 8mV rms in 30A range
2mV rms in 300A / 3000A ranges
Temperature coeff. ± 0.1% of reading/°C
Power supply Two AA MN1500 LR6 alkaline batteries,
or an external power supply (+3V/100mA)
Battery life 2000 hours typical
External Power Via 2.1mm (0.08") mini power connector
Low battery Indicated by an orange LED
Overload Indicated by a red LED
Enclosure
Material ARNITE T06-200SNF, UL94 V0
Degree of Protection IP40
Dimensions 110 (l) x 65 (w) x 23 (d) mm
Output 0.5m coax cable terminated with a safety BNC

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Probe
Probe length 610mm (24 inches), double insulated
Probe diameter 9.9mm (0.39 inches)
Output cable 2m (78.7inches), probe to integrator
Material Alcryn 2070 NC, LATI LATENE 7H2W V0
Degree of Protection IP65
General Characteristics
Operating temp. -20°C to +65°C (-4°F to +149°F)
Storage temp. -40°C to +75°C (-40°F to +167°F)
Operating humidity 15% to 85% (non-condensing)
Safety standards EN 61010-1
EN 61010-2-032
EMC EN 61326-2-2
1000 V
RMS
, Category III, 600 V
RMS
, Category IV, Pollution Degree 2
(Probe and Integrator)
30V maximum between output and earth
ROHS and WEEE compliant
Rated for continuous use

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4. OPERATION
4.1 BATTERY INSTALLATION
Never replace batteries with flexible measuring head
installed on conductor to be tested or output connected to a
display device.
Never operate the unit without the battery cover fitted.
The ETA 5403 requires two AA MN1500 LR6 alkaline batteries
for operation. The battery compartment is accessed from the rear
of the electronics enclosure.
Battery status is indicated by an orange LED on the front of the
integrator module. This LED will flash one time when the unit is
switched ON. The length of time the LED is lit will increase as
battery life decreases. Continuous lighting of LED indicates low
battery and requires batteries to be replaced.
Should you suspect a depleted battery or the low battery LED
blinking, proceed as follows.
1. Turn “OFF” all power to the unit and measurement circuits.
2. Set the probe selector switch to the “OFF” position.
3. Remove the flexible current probe from around the conductor
of your measurement circuit. Disconnect the output from the
display unit.
4. Rotate the battery lock screw (1/4 turn) until it aligns with the
unlock symbol. The battery cover can now be removed.
5. Install the replacement batteries into the battery holder.
6. Replace the battery cover and turn the battery lock until it
aligns with the lock symbol.

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4.2 EXTERNAL POWER SUPPLY
An optional external power supply can be used with the ETA
5403. The requirements are a stabilised 3VDC supply with a
minimum current output of 100mA. The supply is to be
terminated with a 2.1mm/5.5mm (0.08’’/0.219’’) power connector
(centre negative).
The unit is to be externally powered by a Listed Limited Power
Supply Only.
(+terminal)
(- terminal)
4.3 MEASURING CURRENT
Read safety section of instructions before operat
ing this
product.
Ensure conductor to be tested is de energised
Connect the output of the electronics to the input of an
oscilloscope or other data recording device.
The flexible current probe is not for use on conductors
with a potential of over 1000V.
Wrap the flexible probe around the conductor to be tested,
close coupling. Energise the circuit under test. Locate the
coupling away from nearby conductors.

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4.4 OPERATION
To activate unit, move the rotary switch from the “off” position to
the required measuring range. If the value of current being
measured is unknown, first select the highest range and then
reduce accordingly.
4.5 BATTERY STATUS
Battery status is indicated by an orange LED on the front of the
integrator module. This LED will flash one time when the unit is
switched ON. The length of time the LED is lit will increase as
battery life decreases. Continuous lighting of LED indicates low
battery and requires batteries to be replaced.
Always use appropriate equipment for personal
protection. Do not use the flexible current probe
to measure bare conductors unless wearing
protective clothing suitable for high voltage work.