Amprobe ALC-110 Operating Manual

ALC-110

Leakage Current
Clamp

User Manual

ENG FRE

SPA

ALC-110

Leakage Current
Clamp

User Manual

English

11/2018, 6011518 A
©2018 Amprobe
All rights reserved. Printed in Taiwan

Limited Warranty and Limitation of Liability

Your Amprobe product will be free from defects in material and
workmanship for one year from the date of purchase unless local
laws require otherwise. This warranty does not cover fuses, disposable
batteries or damage from accident, neglect, misuse, alteration,
contamination, or abnormal conditions of operation or handling.
Resellers are not authorized to extend any other warranty on the
behalf of Amprobe. To obtain service during the warranty period,
return the product with proof of purchase to an authorized Amprobe
Service Center or to an Amprobe dealer or distributor. See Repair
Section for details. THIS WARRANTY IS YOUR ONLY REMEDY. ALL
OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR STATUTORY

- INCLUDING IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
PURPOSE OR MERCHANTABILITY, ARE HEREBY DISCLAIMED.
MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM
ANY CAUSE OR THEORY. Since some states or countries do not allow
the exclusion or limitation of an implied warranty or of incidental or
consequential damages, this limitation of liability may not apply to you.

Repair

All Amprobe returned for warranty or non-warranty repair or
for calibration should be accompanied by the following: your
name, company’s name, address, telephone number, and proof of
purchase. Additionally, please include a brief description of the
problem or the service requested and include the test leads with
the meter. Non-warranty repair or replacement charges should be
remitted in the form of a check, a money order, credit card with
expiration date, or a purchase order made payable to Amprobe.

In-warranty Repairs and Replacement – All Countries

Please read the warranty statement and check your battery before
requesting repair. During the warranty period, any defective test tool
can be returned to your Amprobe distributor for an exchange for the
same or like product. Please check the “Where to Buy” section on
amprobe.com for a list of distributors near you. Additionally, in the
United States and Canada, in-warranty repair and replacement units
can also be sent to an Amprobe Service Center (see address below).

Non-warranty Repairs and Replacement – United States and Canada

Non-warranty repairs in the United States and Canada should be
sent to an Amprobe Service Center. Call Amprobe or inquire at your
point of purchase for current repair and replacement rates.

USA: Canada:
Amprobe Amprobe
Everett, WA 98203 Mississauga, ON L4Z 1X9
Tel: 877-AMPROBE (267-7623) Tel: [phone]

Non-warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your Beha­Amprobe distributor for a nominal charge. Please check the “Where
to Buy” section on beha-amprobe.com for a list of distributors near
you.

Beha-Amprobe

Division and reg. trademark of Fluke Corp. (USA)

Germany* United Kingdom
In den Engematten 14 52 Hurricane Way
79286 Glottertal Norwich, Norfolk
Germany NR6 6JB United Kingdom
Phone: [phone] - 0 Phone: [phone]
beha-amprobe.de beha-amprobe.com

The Netherlands - Headquarters**
Science Park Eindhoven 5110
5692 EC Son
The Netherlands
Phone: [phone]
beha-amprobe.com

*(Correspondence only – no repair or replacement available from
this address. European customers please contact your distributor.)
**single contact address in EEA Fluke Europe BV

Leakage Current Clamp

CONTENTS

SYMBOLS ............................................................... 2

SAFETY INFORMATION .........................................2

UNPACKING AND INSPECTION .............................4

FEATURES AND APPLICATIONS ............................. 4

DESCRIPTION OF THE INSTRUMENT ..................... 5

DESCRIPTION OF THE LCD .................................... 5

POWER ON/OFF ..................................................... 6

AUTO BACKLIGHT ................................................. 6

AC CURRENT MEASUREMENT .............................. 7

LEAKAGE CURRENT MEASUREMENT ................... 8

DATA HOLD........................................................... 10

MAX HOLD ........................................................... 10

LOW PASS FILTER (50-60 HZ)

& APPLIANCE FILTER ............................................. 11

SPECIFICATIONS ....................................................13

ELECTRICAL SPECIFICATIONS ...............................15

MAINTENANCE ..................................................... 17

BATTERY REPLACEMENT ...................................... 17

1

SYMBOLS





�

CAT III

B

> 30 A/m









Caution

WARNING. HAZARDOUS VOLTAGE
Risk of electric shock

Consult user documentation

Application around and removal from
uninsulated hazardous live conductors is
permitted

Measurement Category III is applicable to
test and measuring circuits connected to
the distribution part of the building’s
low-voltage MAINS installation

Alternating current

Do not operate within external low
frequency magnetic fields >30 A/m

Equipment protected throughout by
DOUBLE INSULATION or REINFORCED
INSULATION

Battery

Conforms to European Union directives

Certified by CSA Group to North American
safety standards

Conforms to relevant Australian EMC
standards

This product complies with the WEEE
Directive marking requirements. The
affixed label indicates that you must not
discard this electrical/electronic product
in domestic household waste. Product
Category: With reference to the equipment
types in the WEEE Directive Annex I,
this product is classed as category 9
“Monitoring and Control Instrumentation”
product. Do not dispose of this product as
unsorted municipal waste.

SAFETY INFORMATION

The meter complies with:

• IEC/EN 61010-1 3rd Ed., UL61010-1 3rd Ed. and CAN/
CSA C22.2 No. 61010-1-12 to CAT III 600 V, pollution
degree 2.

• IEC/EN 61010-2-032

• IEC/EN 61557-13

• EMC IEC/EN 61326-1 and IEC/EN 61326-2-2

Measurement Category III (CAT III) is for measurements
performed in a building installation. Examples include
measurements on distribution boards, circuit breakers
and wiring — including cables, bus-bars, junction boxes,
switches, socket-outlets in a fixed installation — as well as
equipment for industrial use and stationary motors with a
permanent connection to the fixed installation.

2

CENELEC Directives

The instrument conforms to CENELEC Low-voltage
directive 2014/35/EU and Electromagnetic compatibility
directive 2014/30/EU

 Warning

To prevent possible electrical shock, fire, or personal injury:

• Read all safety information before you use the Product.

• Carefully read all instructions.

• Use the Product only as specified, or the protection
supplied by the Product can be compromised.

• Do not use the Product around explosive gas, vapor, or
in damp or wet environments.

• Do not touch voltages >30 V AC rms, 42 V AC peak,
or 60 V DC.

• Before each use, examine the Product. Look for cracks
or missing pieces of the Product housing. Also look for
loose or weakened components. Carefully examine the
insulation around the jaws.

• Do not use the Product if it is damaged.

• Limit operation to the specified measurement category,
voltage, or amperage ratings.

• Use extreme caution when working around bare
conductors or busbars. Contact with the conductor could
result in electric shock.

• Do not hold the Product anywhere beyond the tactile barrier.

• When measuring current, center the conductor in the clamp.

• Remove the batteries if the Product is not used for an
extended period of time, or if stored in temperatures
above 140 °F (60 °C). If the batteries are not removed,
battery leakage can damage the Product.

• Replace the batteries when the low battery indicator
shows to prevent incorrect measurements.

• Use only 1.5V AAA batteries, properly installed in the
Product case, to power the Product.

• Use only 1.5V AAA alkaline batteries and follow all
battery care from the manufacturer.

• Never remove the battery cover or open the case of
the Product without first removing the jaws from a live
conductor.

• The battery door must be closed and locked before you
operate the Product.

• Do not leave the Product on or near objects of high
temperature.

• For use by competent persons only.

• For safe operation of the Product, do not operate within
external low frequency magnetic fields >30 A/m. Ensure
the jaw is locked before making measurements.

• Have an approved technician repair the Product.

 Caution

• For best accuracy please consider following impacts:

- use whenever possible optimized position of the
clamp when the conductor is positioned is in the center
of jaw and the angle between conductor and jaw is 90°

- reduce influences by external magnetic field
(for impact see error E11 in specification table)

- reduce influences by contamination of the jaw
(recommendation for cleaning see in chapter
maintenance)

• The measurement of differential current will be
influenced by the load current (for influence of load
current, see error E12 in Specification table).

3

• If the Product is used in the vicinity of equipment that
generates electromagnetic interference, the display
may become unstable or the measurements shown may
be subject to large errors.

• Do not subject the jaw to unreasonably strong shock,
vibration or force.

• If dust gets into the top of the jaw, remove it
immediately. Do not close the jaw when dust is trapped

in its joints as the sensor may be damaged.

UNPACKING AND INSPECTION

Your package should include:

1 ALC-110 Leakage Current Clamp
2 1.5 V AAA batteries
1 User manual
1 Soft carrying case

If any of the items are damaged or missing, return the
complete package to the place of purchase for an exchange.

Note: Batteries do not come installed. Please refer to the
Battery Replacement section for further instructions.

FEATURES AND APPLICATIONS

Features

• CAT III 600 V safety rated

• Leakage clamp acc. IEC/EN61557-13, VDE 0413-13

• Low influence of external low frequency magnetic
fields @ I
operating class 2, ≤ 30A/m

• True-rms measurements for best accuracy when
measuring complex, non-sinusoidal waveforms

• Highest resolution of 0.001 mA, measure up to 60 A:
Range: 6 mA, resolution of 0.001 mA
Range: 60 mA, resolution of 0.01 m
Range: 600 mA, resolution of 0.1 mA
Range: 6 A, resolution of 0.001 A
Range: 60 A, resolution of 0.01 A

• Selectable limits: 3.5 mA, 10 mA, 12 mA, 0.25 mA, 0.5 mA

• Selectable filter function to remove unwanted noise:

- appliance filter (acc. IEC/EN 61557-16),

- 50/60 Hz filter

- no filter

• Frequency range 15 Hz to 1 kHz to cover railway and
industrial application

• Max and data hold

• Mechanical jaw lock

• 1.2 in (30 mm) jaw opening

• Auto backlight

• Auto power off

Applications

• Measurement of earth leakage current.

• Measurement of differential leakage currents.

• Measuring leakage current through the earth (PE)
conductor.

• Tracing the source of earth leakage current.

• Measurement of current consumption of appliances in
service or customer service sector without interruption
to the circuit.

3.5 mA … 600 mA / 40 Hz to 1 kHz:

N

4

DESCRIPTION OF THE INSTRUMENT

1

2

3

4

5

6
7

8

9

1

Jaw

2

Hand barrier

3

Jaw unlock

4

LCD

5

Auto backlight sensor

6

Power

DESCRIPTION OF THE LCD

1

2
3

4

5

1

Auto power off

2

Data/Max hold

3

Warning & caution

4

Low battery

5
6
7

7

Data HOLD

(for Max HOLD press for
>2 sec)

8

Limit

9

Range

(for Filter press for >2 sec)

6

7

Limit function
Bar graph
Appliance filter / 50-60 Hz filter

5

POWER ON/OFF

Press > 1 sec

Press > 1 sec

The meter will display battery capacity when powering up.
Please replace the battery when less than 10% is shown.

AUTO BACKLIGHT

6

AC CURRENT MEASUREMENT

1.2 in

(30 mm)

Hold to unlock

Position Error

OK

OK

When measuring current, ensure the cable is located in the
center of the clamp to avoid position errors.

7



CAT III 600V
with respect to
earth for the jaw.

Hand Guard Barrier



Do not hold the
meter above the
Barrier

LEAKAGE CURRENT MEASUREMENT

The leakage current flows when an unintentional electrical
connection occurs between an energized part of the
electrical system and the earth/ground. The desired value of
leakage current should be 0 A. Check applicable regulations
and standards for allowable limits of leakage current.

For properly grounded systems, in case of the fault,
leakage current should be conducted via earth conductor
(PE) (Figure 1). We can measure such current directly in a
earth conductor using a leakage clamp meter.

In some cases, specifically when equipment is not properly
grounded, the leakage current may flow through other
paths. Use differential current measurement methods
to verify such current leaks (Figure 2, Figure 3, Figure 4).
Clamp a leakage current meter around all active conductors
(hot and neutrals), but without any earth conductor. An
electromagnetic field around all conductors should cancel
each other if there is no current leak and clamp meter
should read 0A. If there is a leak, there will be imbalance
between electromagnetic fields, and the clamp meter will
read the actual value of that leakage current.

Leakage current measurement process

1. Turn the meter on.

2. Make sure the jaw is closed and the meter is away from
conductors and other sources of electromagnetic fields.

3. Clamp the meter around a earth conductor. The meter
will indicate leakage current in earth conductor.

4. Clamp the meter around all active conductors, hot and
neutrals (but without earth conductors). The meter
will indicate total system leakage current that consists
of earth conductor current as well as any other stray
current leakage.

8

Load

Figure 1: Direct Method

Measurement of earth (PE) leakage current

Load

1ø2W

Figure 2

Load

3ø3W

Figure 3

Load

3ø4W

Figure 2, 3 and 4: Differential Method

Measurement of differential leakage current

Figure 4

9

DATA HOLD

MAX HOLD

20A 0A

Press

Press > 2 sec

10

LOW PASS FILTER (50-60 HZ) & APPLIANCE FILTER

Low Pass and Appliance filters are used to filter out high
frequency noise that affect precise measurement of the meter.

• Use Low Pass 50/60Hz filter to perform measurements on
equipment driven by Variable Frequency Drives (VFDs) or
affected by high frequency noise. Significant difference
in reading between measurement with and without low
pass filter may indicate presence of harmonics.

• Use Appliance Filter to conduct leakage current
measurements of appliances in accordance with
IEC/EN 61557-16 regulation requirements.

Wide Mode

Appliance Filter 50-60 Hz

Auto/ Manual Range

20A

Auto Range Manual Range

20A

11

LIMIT
Limit selection:

The LIMIT function offers 5 limit values (3.5 mA / 10 mA / 12 mA /

0.25 mA / 0.5 mA) in accordance with safety standards.

1. Continue pressing LIMIT button until desired limit value
is selected. The unit will be looping between 3.5 mA /
10 mA / 12 mA / 0.25 mA / 0.5 mA values.

2. When desired value is selected wait 2 sec to automatically
apply selection. The LIMIT symbol will be displayed on the
LCD to indicate that the function is active.

3. Verify the selection by pressing the LIMIT button one
time. The unit will display the selected value for 2 seconds.

4. To disable the LIMIT function, press the LIMIT button for
>2 sec.

Display when limit is exceeded:

The internal buzzer will continue beeping and the
display will flash and show a warning symbol when the
measurements exceeds the selected limit value.

12

Auto Power Off

20 min

Disable Auto Power Off

Hold LIMIT
Button down
and power up

SPECIFICATIONS

Display 6000 counts digit large scale

Sensing True RMS

Update rate 5 per second nominal

32 °F to 86 °F (0 °C to 30 °C)

Operating
temperature and
relative humidity

Storage
temperature

Jaw opening 1.2 in (30 mm) max.

Pollution degree 2
IP rating IP20
Operating altitude ≤ 2000 m
Overload

protection
Measurement

category

Safety compliance

E.M.C. Meets EN61326-1

(≤ 80% R.H.)
86 °F to 104 °F (30 °C to 40 °C)
(≤ 75% R.H.)
104 °F to 122 °F (40 °C to 50 °C)
(≤ 45% R.H.)

-4 °F to 140 °F (-20 °C to 60 °C)
(with battery removed)

600 V rms

CAT III 600 V

IEC 61010-1, IEC 61010-2-032,
IEC 61557-13

13

Korea (KCC): Class A equipment
(Industrial Broadcast &
Communications Equipment)

Electromagnetic
Compatibility

Class A: Equipment meets
requirements for industrial
electromagnetic wave equipment and
the seller or user should take notice
of it. This equipment is intended for
use in business environments and not
to be used in homes.

Current sensor
operating class

Selectable limits

Selectable filter
functions

AC frequency
response

Class 2, ≤30 A/m acc. IEC/EN 61557-13
@ I

N: 3.500 mA – 600.0 mA / 40 Hz to

1 kHz

0.250 mA / 0.500 mA / 3.500 mA /

10.00 mA / 12.00 mA
Appliance filter

(acc. IEC/EN 61557-16),
50/60 Hz filter or no filter

15 Hz ... 1 kHz

@ 30 A/m:
reading 3.5...10 mA <20%
reading >10 mA <12.5%

Operating
uncertainty (B)

@ 10 A/m:
reading 3.5...10 mA <15%
reading >10 mA <10%

(valid for proper range with best
resolution)

Intrinsic
uncertainty (A)

See ELECTRICAL SPECIFICATIONS

Position error (E1) Add ±1% of reading
Supply voltage

error (E2)
Influence of

temperature (E3)

N/A

Add 0.1 x (Specified accuracy) / °C,
< 21 °C, > 25 °C

Influence of
interference

N/A

voltages (E4)
Influence of

earth electrode

N/A

resistance (E5)
Influence for

phase angle of
impedance of

N/A

circuit under test
(E6)

Influence of
system frequency

N/A

(E7)
Influence of

system voltage

N/A

(E8)
Influence

of distorted

<(1%+20d)

waveform (E9)
Influence of

system d.c.

N/A

quantities (E10)

14

Influence of
external low
frequency
magnetic fields
(E11)

Influence of load
current (E12)

10 A/m: add ±0.1 mA
30 A/m: add ±0.3 mA
@ I

: 3.500 mA – 600.0 mA / 40 Hz

N

to 1 kHz
and a frequency of the magnetic
field of 15 to 400 Hz acc. to
IEC 61000-4-8

Add ±6 μA per A load current

Influence of touch
current caused
common mode

N/A

voltage (E13)
Influence of

frequency (E14)
Influence of

repeatability (E15)

Agency approval

N/A

N/A



Power supply Two 1.5 V AAA (LR03) batteries
Battery life 60 hours typical
Low battery

voltage
Low battery

indication

Approx. 2.5 V

Auto power off Idle for 20 minutes
Dimensions

(H x W x L)

Weight

8.7 x 3.5x 1.8 in
(221 x 89 x 48 mm)

Approximately 0.90 lb (410 g) with
battery installed

ELECTRICAL SPECIFICATIONS

Accuracy is given as ± (% of reading + counts of least
significant digit) at 23 °C ± 2 °C (≤ 80% R.H.)

AC Function

• AC A specifications are AC coupled, true RMS.

• For non-sinusoidal waveforms, Additional Accuracy by
Crest Factor (C.F.):
Add 1.0% for C.F. 1.0 to 2.0
Add 2.5% for C.F. 2.0 to 2.5
Add 4.0% for C.F. 2.5 to 3.0

• Max. Crest Factor of Input Signal:

3.0 @ 3000 counts

2.0 @ 4500 counts

1.5 @ 6000 counts

• Frequency Response is specified for sine waveform.

• When operating under magnetic field add error E11.

• When measuring leakage current of multiple conductors,
add error E12 for influence of load current.

• For Position Error see error E1.

15