Fluke i400 User manual

i400
AC Clamp Meter
Instructions
Introduction
The i400 (the Product or Clamp) is an ac current clamp that
outputs 1 mA/A through the use of safety-shrouded banana
plugs. The Product extends the ability of an ac current meter
to take measurements up to 400 A.
Use the Product with a multimeter that has: banana plug
input jacks, a current range ≥20 mA ac, an input accuracy
≥2 %, and an input impedance <10 Ω.
To register your product, or to view, print, or download the
latest manual or manual supplement, go to our website:
www.fluke.com/productinfo.
MIN MAX RANGE
REL Hz %
AutoHOLD
Peak MIN MAX
4½ DIGITS
1 Second
°
C/
°
F
OFF
mA
A
mV
V
VA
A
mA
COM V
400mA
FUSED
10A MAX
FUSED
A
TRUE RMS MULTIMETER
87 V
LOLO
x1000x
320 mA 320 A
5 mA 5 A
0.3 A 30 A
1 2
3
4
3
mA
A
RANGE
>20 mA ac
A
mA
COM V
400mA
FUSED
10A MAX
FUSED
A
1
4
3
2
5
XW
PN 2282667 (English)
12/2004, Rev. 1, 12/2022
©2004-2022 Fluke Corporation. All rights reserved.
Specifications are subject to change without notice.
Fluke Corporation
P.O. Box 9090 Everett, WA 98206-9090 U.S.A.
Fluke Europe B.V.
P.O. Box 1186 5602 BD Eindhoven The Netherlands
[phone] f[email protected]

Safety Information
A Warning identifies hazardous conditions and procedures
that are dangerous to the user. A Caution identifies
conditions and procedures that can cause damage to the
Product or the equipment under test.
 Warning
To prevent possible electrical shock, fire, or personal
injury:
Read all safety information before you use the
Product.
Do not alter the Product and use only as specified,
or the protection supplied by the Product can be
compromised.
Carefully read all instructions.
Do not use the Product if it operates incorrectly.
Do not touch voltages >30 V ac rms, 42 V ac peak,
or 60 V dc.
Do not work alone.
Limit operation to the specified measurement
category, voltage, or amperage ratings.
Do not exceed the Measurement Category (CAT)
rating of the lowest-rated individual component of
a Product, probe, or accessory.
Use Product-approved Measurement Category
(CAT), voltage, and amperage-rated accessories
(probes, test leads, and adapters) for all
measurements.
Do not make connections on hazardous live
conductors in damp or wet environments.
Comply with local and national safety codes. Use
personal protective equipment (approved rubber
gloves, face protection, and flame-resistant
clothes) to prevent shock and arc blast injury
where hazardous live conductors are exposed.
Do not use a current measurement as an indication
that a circuit is safe to touch. A voltage
measurement is necessary to know if a circuit is
hazardous.
Use the Clamp only on insulated conductors. Use
caution around bare conductors or bus bars. To
prevent electrical shock, do not touch the
conductor.
Do not measure current while the test leads are in
the input jacks.
Hold the Product behind the tactile barrier. See
in the figure.
Before each use, examine the Product. Look for
cracks or missing pieces of the clamp housing or
output cable insulation. Also look for loose or
weakened components. Carefully examine the
insulation around the jaws.

Do not use the Product above its rated frequency.
Disable the Product if it is damaged.
The table below lists the symbols that can be used on the
Product or in this document.
Maintenance
Periodically wipe the case with a damp cloth and mild
detergent. Do not use abrasives or solvents to clean the
clamp.
Open the jaws and wipe the magnetic pole pieces with a
lightly oiled cloth. Do not allow rust or corrosion to form on
the magnetic core ends.
Dispose of old devices in a professional and environmentally
sound manner:
Delete personal data on the Product before disposal.
Remove batteries that are not integrated into the
electrical system before disposal. Dispose of batteries
separately.
If this Product has an integral battery, put the entire
Product in the electrical waste.
Symbol Description
Consult user documentation.
WARNING. RISK OF DANGER.
WARNING. HAZARDOUS VOLTAGE. Risk of
electric shock.

Application around and removal from
uninsulated hazardous live conductors is
permitted.
Double Insulated

Measurement Category III is applicable to test
and measuring circuits connected to the
distribution part of the building’s low-voltage
MAINS installation.

Measurement Category IV is applicable to test
and measuring circuits connected at the
source of the building’s low-voltage MAINS
installation.
Conforms to European Union directives.

This product complies with the WEEE
Directive and its marking requirements. The
affixed label indicates that you must not
discard this electrical/electronic product in
domestic household waste. Do not dispose of
this product as unsorted municipal waste. For
information about take-back and recycling
programs available in your country, see the
Fluke website.

General Specifications
Size: 150 mm x 70 mm x 30 mm
Weight: 114 g
Temperature:
Operating: 0 °C to 50 °C (32 °F to 122 °F)
Storage: -20 °C to 60 °C (-4 °F to 140 °F)
Coefficient: 0.01 x (specified accuracy)/°C (<18 °C or
>28 °C) [(64.4 °F to 82.4 °F)]
Relative humidity: 95 %, 10 °C to 30 °C (50 °F to 86 °F)
75 %, 30 °C to 40 °C (86 °F to 104 °F)
45 %, 40 °C to 50 °C (104 °F to 122 °F)
Altitude:
Operating: 2000 m
Storage: 12 000 m
Output cable length: 1.5 m
Maximum conductor size: 32 mm
Safety: IEC 61010-1: Pollution Degree 2
IEC 61010-2-032: CAT IV 600 V/CAT III 1000 V
Electrical Specifications
Reference conditions: 23 ±5 °C, 20 % to 75 % RH,
conductor centered in jaw opening, no dc component, no
adjacent conductor
Measurement range: 1 A to 400 A ac rms, measurement
accuracy of <1 A is unspecified
Output: 1mA/A
Accuracy: 2%+0.06 A, 45 Hz to 400 Hz
Typical bandwidth: 5Hzto20kHz
Working voltage: 1000 V ac rms from earth ground
Load impedance: <10 Ω
Maximum non-destructive current: 1000 A
Duty cycle: 1 A to 400 A continuous
Influence of adjacent conductor: <7.5 mA/A
Influence of conductor position in jaw opening: ±1%of
reading +0.05 A
LIMITED WARRANTY
This Fluke product will be free from defects in material and
workmanship for 1 year from the date of purchase. 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 Fluke’s behalf. To
obtain service during the warranty period, contact your nearest
Fluke authorized service center to obtain return authorization
information, then send the product to that Service Center with a
description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER
WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT 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.
11/99