Chauvin Arnoux E25 User manual

AC/DC current clamp
EN - User’s manual
E25

2
WARNING, risk of DANGER! The operator must refer to this user’s manual whenever this danger symbol appears.
May be placed on and removed from conductors at dangerous voltages. Type A current sensor as per IEC/EN 61010-
2-032 or BS EN 61010-2-032.
Equipment protected by double insulation. Battery.
Useful information or tip. USB.
To identify the phase (or the direction) of the primary current.
Chauvin Arnoux has adopted an Eco-Design approach in order to design this appliance. Analysis of the complete life-
󰀨
exceeds regulation requirements with respect to recycling and reuse.
The CE marking indicates compliance with the European Low Voltage Directive, 2014/35/UE, the Electromagnetic
Compatibility Directive, 2014/30/EU, and the Restriction of Hazardous Substances Directive, (RoHS 2011/65/UE and
2015/863/UE).

particular as regards Low-Voltage Safety, Electromagnetic Compatibility, and the Restriction of Hazardous Substances.
The rubbish bin with a line through it indicates that, in the European Union, the product must undergo selective disposal
in compliance with Directive WEEE 2012/19/UE: This equipment must not be treated as household waste.
Thank you for purchasing an E25 AC/DC current clamp, which we trust will give you satisfaction.
For best results from your instrument:
read this user manual carefully,
comply with the precautions for use.
Denition of measurement categories
Measurement category IV corresponds to measurements taken at the source of low-voltage installations.
Example: power feeders, counters and protection devices.
Measurement category III corresponds to measurements on building installations.

Measurement category II corresponds to measurements taken on circuits directly connected to low-voltage installations.
Example: power supply to domestic electrical appliances and portable tools.
PRECAUTIONS FOR USE
This device is compliant with safety standard IEC/EN 61010-2-032 or BS EN 61010-2-032, for voltages up to 600V in category III
or 300 V in category IV.

installations.
The operator and/or the responsible authority must carefully read and clearly understand the various precautions to be taken in
use. Sound knowledge and a keen awareness of electrical hazards are essential when using this instrument.

Do not use the instrument on networks of which the voltage or category exceeds those mentioned.
Do not use the instrument if it seems to be damaged, incomplete, or poorly closed.
Before each use, check the condition of the insulation on the leads and housing. Any item of which the insulation is deteriorated
(even partially) must be set aside for repair or scrapping.

Do not expose the clamp to sprays of water.
Use personal protection equipment systematically.
All troubleshooting and metrological checks must be done by competent, accredited personnel.

3
CONTENTS
1. PRESENTATION ..................................................................................................................................................................... 4
1.1. Delivery condition ........................................................................................................................................................... 4
1.2. Accessories .................................................................................................................................................................... 4
1.3. Inserting the battery........................................................................................................................................................ 4
1.4. Functions ....................................................................................................................................................................... 4
1.5. E25 clamp....................................................................................................................................................................... 5
2. USE........................................................................................................................................................................................... 6
2.1. Getting started ................................................................................................................................................................ 6
2.2. Zero adjustment.............................................................................................................................................................. 6
2.3. Measurement.................................................................................................................................................................. 6
󰀨 ........................................................................................................................................................................... 7
2.5. Indicators ........................................................................................................................................................................ 7
2.6. Mains adapter (option).................................................................................................................................................... 7
3. SPECIFICATIONS................................................................................................................................................................... 8
3.1. Reference conditions...................................................................................................................................................... 8
3.2. Electrical characteristics ................................................................................................................................................. 8
3.3. Operating limits..............................................................................................................................................................11
3.4. Variations in the range of use ....................................................................................................................................... 12
3.5. Power supply ................................................................................................................................................................ 12
3.6. Environmental conditions ............................................................................................................................................. 12
........................................................................................................................................... 13
3.8. Conformity to international standards........................................................................................................................... 13
3.9. Electromagnetic compatibility ....................................................................................................................................... 13
4. MAINTENANCE..................................................................................................................................................................... 14
4.1. Cleaning ....................................................................................................................................................................... 14
4.2. Replacing the battery.................................................................................................................................................... 14
4.3. Manual adjustment ....................................................................................................................................................... 14
5. WARRANTY........................................................................................................................................................................... 16

4
1. PRESENTATION
1.1. DELIVERY CONDITION
The E25 clamp is delivered in a cardboard box with:
one 9V alkaline battery (type 6LR61 or NEDA 1604A),
one multilingual getting started guide,
one multilingual safety data sheet,

1.2. ACCESSORIES
One 5V, 500mA external power supply comprising:
one mains/USB type A adapter
one USB type A/micro-USB type B cable
For the accessories and spares, consult our web site:
www.chauvin-arnoux.com
1.3. INSERTING THE BATTERY
Use a screwdriver to unscrew the captive screw of the battery compartment cover.
󰀨
Connect the battery to the snap-on connector; take care with the polarity.
You can use a rechargeable Ni-MH battery, but the life will be shorter. The instrument does not recharge rechargeable batteries.
Place the battery in its compartment.
Put the battery compartment cover back in place; make sure that it is completely and correctly closed.
Screw the screw back in.
1.4. FUNCTIONS

out the waveform and amplitude of the current being measured, in the form of a voltage.
Its shape allows it to reach hard-to-reach places.
This clamp can be used with all measuring instruments having banana inputs. It can be used with a multimeter, a wattmeter, a
recorder, etc.
It can be powered by a battery or at 5VDC via the micro-USB connector.
It has:
a reset pushbutton,
a range overshoot indicator,
a power supply indicator,
automatic standby to prolong battery life.
➀➁
➂
➄
➃

5
1.5. E25 CLAMP
I
Zéro
600 V CAT III
P
ON
AUTO POWER OFF
OL
1 V/A
10 mV/A
OFF
Mobile jaw.
Fixed jaw.

2 male banana plugs 4mm in diameter.
Guard.
Reset button.
ON and OL indicators.
Three-position slide
switch.
Type B micro-USB con-
nector.
Mobile arm.
Battery compart-
ment cover.
Screw of the battery
compartment cover.
Fixed arm.

6
2. USE
2.1. GETTING STARTED
Switch the clamp on by pushing the slide switch to the 1V/A or the 10mV/A setting.
The 1V/A setting corresponds to the 2A range.
The 10mV/A setting corresponds to the 80A range.
The ON indicator lights green. If it blinks, there remain less than 4 hours of use. If it fails to light, you must replace the battery (see
§ 4.2).
2.2. ZERO ADJUSTMENT
Switch the clamp on.
Connect the clamp to the measuring instrument. The phase is on the red lead.
Make sure that the clamp is not on a conductor and that its jaws are correctly closed.
Place the clamp in the position it will be in during the measurement.
Press the zero adjustment button.
The OL indicator lights for approximately three seconds to indicate that the zero adjustment is in progress in the two ranges.
If the zero has been correctly adjusted, the OL󰀨
In this case, check that the clamp is not on any conductor and that its jaws are correctly closed, then press the zero adjustment
button again.
󰀨
2.3. MEASUREMENT
The zero must be adjusted before each measurement.
Once the zero has been adjusted, press the moving arm of the clamp to open the jaws.
Clamp the cable carrying the current to be measured. Use the centring marks to help you centre the cable inside the jaws of
the clamp.

producer consumer
source load
I
I
I
Release the moving arm gently and make sure that the jaws are correctly closed.
The value measured is displayed on the measuring instrument.

7
If the OL indicator lights, it means that the current is too strong to be measured. If you are in the 1V/A range, switch to the 10mV/A
range.
Apply the conversion factor corresponding to the setting of the switch.
I
I = = 15 A
150 mV
10 mV/A
COM +
mV
1 V/A
10 mV/A
OFF
mV
Range 2A 1V/A
Range 80A 10mV/A
2.4. AUTO OFF
At the end of 10 minutes of operation with no sign of the user’s presence (a press on the zero adjustment button or an action on
the switch), the clamp switches to standby and the ON󰀨
To wake up the clamp, press the zero adjustment button or set the switch to a position other than OFF.
󰀨 P), press the zero adjustment button when starting up the instrument. The
ON indicator blinks to indicate that the request has been taken into account, then lights steady orange when you release the zero
adjustment button.
󰀨OFF󰀨
2.5. INDICATORS
ON indicator OL indicator
󰀨󰀨 󰀨
Lighted green: instrument on Lighted red: The measurement exceeds the range
Blinking green: the batteries will have to be replaced
in less than 4h 3 s
Lighted red for 3 seconds: the zero adjustment is in
progress.
Lighted orange: permanent operation P󰀨
deactivated)
2.6. MAINS ADAPTER (OPTION)
For long-term measurements, you can connect the clamp to mains using the optional line power adapter. You can use any mains/
micro-USB adapter that delivers 50mA or more.
When the instrument is powered via the micro-USB connector, automatic standby is disabled.
The insulation between the type B micro-USB connector and the measurement output is 600V CAT III. This makes it possible to
connect the clamp, without risk, to measuring instruments having inputs that are not insulated. The type B micro-USB connector
must not be in contact with conductors or uninsulated parts at dangerous voltage.
If the external power supply is disconnected, the clamp changes back to battery-powered operation. The colour of the ON indicator
indicates whether automatic standby is enabled (indicator green) or not (indicator orange).

8
3. SPECIFICATIONS
3.1. REFERENCE CONDITIONS
Quantity of inuence Reference values
Temperature 23 ± 5 °C
Relative humidity 20 to 75%RH
Position of the conductor centred
Frequency of the measured signal DC to 65Hz sine wave
Powered by battery: 6.5 to 9 V
external supply: 5 V ± 0.1 V
 zero
 < 40 A/m
 zero
Impedance of the measuring instrument 
The intrinsic uncertainty
󰀨
± (a% R + b)
3.2. ELECTRICAL CHARACTERISTICS
Range 1V/A (2A) 10mV/A (80A)
 0.005 to 2 A
0.005 to 1.5 A
0.05 to 50 A
0.05 to 40 A
50 to 80 A
40 to 60 A
Intrinsic uncertainty   
Phase shift (DC to 65Hz)   
3.2.1. TYPICAL CURVES
Typical amplitude error curve for a DC current, 10mV/A range
-14,00
-12,00
-10,00
-8,00
-6,00
-4,00
-2,00
0,00
2,00
4,00
6,00
8,00
10,00
12,00
14,00
110 100
Error (%)
Maximum envelope
Minimum envelope
Current (A)

9
Typical amplitude error curve for a 60Hz AC current, 10mV/A range
Error (%)
-14,00
-12,00
-10,00
-8,00
-6,00
-4,00
-2,00
0,00
2,00
4,00
6,00
8,00
10,00
12,00
14,00
110 100 Current (A)
3.2.2. NOISE
Typical noise level at output DC AC
10mV/A range ± 120 µV 180 µV
Calibre 1V/A ± 8 mV 4 mV
3.2.3. ZERO ADJUSTMENT
Minimum zero adjustment range: ±1.5 A in steps of approximately 1.2 mA.
3.2.4. FREQUENCY RESPONSE
Typical amplitude error curve as a function of frequency, I = 1A, 10mV/A range
Error (%)
-20dB
-18dB
-16dB
-14dB
-12dB
-10dB
-8dB
-6dB
-4dB
-2dB
0dB
10 100 1000 10000 100000 1000000 Frequency (Hz)

10
-30dB
-25dB
-20dB
-15dB
-10dB
-5dB
0dB
5dB
10 100 1000 10000 100000 1000000
-200,00
-180,00
-160,00
-140,00
-120,00
-100,00
-80,00
-60,00
-40,00
-20,00
0,00
10 100 1000 10000 100000
-250,00
-200,00
-150,00
-100,00
-50,00
0,00
10 100 1000 10000 100000
Typical amplitude error curve as a function of frequency, I = 0,5A, 1V/A range
Error (%)
Frequency (Hz)
Typical amplitude error curve as a function of frequency, I = 1A, 10mV/A range
Phase shift (°)
Frequency (Hz)
Typical amplitude error curve as a function of frequency, I = 0,5 A, 1 V/A range
Phase shift (°)
Frequency (Hz)

11
3.2.5. PULSE RESPONSE
Pulse response at ±2 Apeak at the frequency of 1 kHz in the 10mV/A range
Reference signal
Clamp
Pulse response at ±0.5 Apeak at the frequency of 1 kHz in the 1V/A range
Reference signal
Clamp
3.3. OPERATING LIMITS


Curve of derating versus frequency
Peak current (A)
10 100 1 000
100
150
0
50
10 000 f (Hz)
Frequency (Hz)

12
3.4. VARIATIONS IN THE RANGE OF USE
Quantity of inuence Range of inuence Error in % of reading
Typical Maximum
Temperature -10 to + 50 °C
Drift of the zero
± 10 mA/°C
Drift of the gain
± 800 ppm/°C
Relative humidity 0 to 85%HR < 0.5 %
Frequency DC at 20 kHz see curves
Position of the conductor ± 0.5 %
Adjacent conductor carrying a current of 10 A at
60 Hz ± 4 mA/A
Load  -2.1%
Common mode AC voltage at 50 Hz ± 1 mA/100 V
 10V/m
80 MHz to 1 GHz ± 4 A
Remanence for 80 A ± 370 mA
3.5. POWER SUPPLY
The instrument is powered by a 9V battery (type 6LR61 or NEDA 1604A).
The typical battery life is 80h with an alkaline battery.
The instrument can be powered by an external supply (5V, 50mA) via the type B micro-USB connector
3.6. ENVIRONMENTAL CONDITIONS
The device must be used in the following conditions:
%RH
100
90
80
70
60
50
40
30
20
10
0
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
°C
321
1 = Range of reference.
2 = Operating range.
3 = Storage range.
Indoor use.
Degree of pollution 2
Altitude < 2000 m
 

13
Clamping capacity: 11.8mm in diameter
3.7. CONSTRUCTION SPECIFICATIONS
Dimensions (L x W x H) 231 x 36 x 67 mm
Weight approximately 330 g
Measurement lead 1.5 m long
USB cord 15 cm long
21 29
36 67
231
Ø11,8
Protection by the housing
IP 20 per IEC 60529
Resistance of the jaws per IEC/EN 61010-2-032 or BS EN 61010-2-032
3.8. CONFORMITY TO INTERNATIONAL STANDARDS
The instrument is compliant with IEC/EN 61010-2-032 or BS EN 61010-2-032, 600 V in category III.
Double or reinforced insulation .
Type of current sensor per IEC/EN 61010-2-032 or BS EN 61010-2-032: type A .
3.9. ELECTROMAGNETIC COMPATIBILITY
The device is in conformity with standard IEC/EN 61326-1 or BS EN 61326-1.

14
4. MAINTENANCE
Except for the battery, the instrument contains no parts that can be replaced by personnel who have not been specially
trained and accredited. Any unauthorized repair or replacement of a part by an “equivalent” may gravely impair safety.
4.1. CLEANING
Disconnect the instrument completely and turn the rotary switch to OFF. Also make sure that no cable is clamped.
Use a damp soft cloth and dry rapidly with a dry cloth or forced air. Do not use alcohol, solvents, or hydrocarbons.
The air gaps of the clamp must always be kept clean.
Do not leave the clamp in very damp places, or exposed to splashes.
4.2. REPLACING THE BATTERY
The battery must be replaced when the On󰀨
Withdraw the conductor from the clamp and disconnect it. Set the switch to OFF.
use a screwdriver to unscrew the captive screw of the battery compartment cover then pull the cover out from the end of the
mobile arm.
Replace the spent battery with a new battery.
Spent primary and storage batteries must not be treated as ordinary household waste. Take them to the appropriate col-
lection point for recycling.
Place the battery in its compartment, with the correct polarity.
Close the compartment and check that it is completely and correctly closed.
Screw the screw back in.
4.3. MANUAL ADJUSTMENT
The manual adjustment serves to adjust the gain of the clamp without using a PC. To maintain good measurement accuracy, we
recommend checking the clamp once a year.
4.3.1. EQUIPMENT NECESSARY
A 200 A, 40 to 60Hz current generator



4.3.2. ADJUSTMENT PROCEDURE
1. First, demagnetize the clamp by clamping a conductor carrying an AC current of at least 200 A at a frequency between 40

2. Place the clamp in a ambient temperature of 23±2°C for one hour. It must not be on a conductor, and the jaws must be correctly
closed. Connect the voltmeter in VAC mode to the output of the clamp.
3. To enter the adjustment mode, hold the DC Zero button down and shift the switch from the OFF setting to the range to be ad-
justed (10mV/A or 1 V/A). Keep the DC Zero button pressed for 30 seconds, until the ON indicator blinks orange, then green.
Release the DC Zero button. The clamp is in the adjustment mode.
4. The clamp then performs an adjustment of the zero. The OL󰀨-
fully.

15
5. Clamp a conductor carrying a current of:
10A 60Hz for the 10mV/A range
1A 60Hz for the 1V/A range
6. Then press the DC Zero󰀨
presses increase this adjustment by one step. So press the DC Zero button until the correct output voltage is reached.
100mV for the 10mV/A range.
1V for the 1V/A range.
If you overshoot this value, continue to press the DC Zero button until the output signal falls below the desired value, then
restart the adjustment.
7. Once this adjustment is done, press the DC Zero button again for 30 seconds, until the ON indicator blinks orange, then green.
You can then release the DC Zero button. The adjustment is recorded and the clamp exits from the adjustment mode.
Remarks
When the clamp is in the adjustment mode (in other words, from step 3), any change of the switch setting causes an exit from

󰀨

16
5. WARRANTY
Except as otherwise stated, our warranty is valid for 24 months starting from the date on which the equipment was sold. Extract
from our General Conditions of Sale provided on request.
The warranty does not apply in the following cases:
Inappropriate use of the equipment or use with incompatible equipment.
󰀨
Work done on the device by a person not approved by the manufacturer.



17

FRANCE
Chauvin Arnoux
12-16 rue Sarah Bernhardt
92600 Asnières-sur-Seine
Tél : [phone]
Fax : [phone]
[email protected]
www.chauvin-arnoux.com
INTERNATIONAL
Chauvin Arnoux
Tél : [phone]
Fax : [phone]
Our international contacts
www.chauvin-arnoux.com/contacts
X04958B02 - Ed. 1 - 07/2021 © Chauvin Arnoux - All rights reserved and reproduction prohibited