i30s/i30
AC/DC Current Clamps
Instruction Sheet
Introduction
The i30s AC/DC Current Clamp has been designed for use with
oscilloscopes and DMMs for accurate, non-intrusive
measurement of both AC, DC, and complex waveform currents.
The i30 AC/DC Current Clamp has been designed for use with
DMMs only. Using advanced Hall Effect technology the i30s can
accurately measure currents with a resolution of 1 mA from 5 mA
to 30 A over the frequency range of DC to 100 kHz. These
features make it a powerful tool for use in inverters, switch mode
power supplies, industrial controllers and other applications
requiring current measurements and/or waveform analysis.
Symbols
The table below lists the symbols used on the product and/or in
this manual.
Symbol Description
~
W
Do not dispose of this product as unsorted municipal
waste. Contact Fluke or a qualified recycler for
disposal.
Important Information. See manual.
®
T
Double insulation.
-
Do not apply around or remove from the HAZARDOUS
LIVE conductors.
Conforms to Canadian Standards Association.
)
P
Complies with the relevant European standards.
PN 2560394
March 2006
©2006 Fluke Corporation. All rights reserved.
Safety Instructions
Please read this section carefully. It will make you familiar with
the most important safety instructions for handling your product.
In this instruction sheet, a Warning identifies conditions and
actions that pose hazard(s) to the user. A Caution identifies
conditions and actions that may damage the calibrator or the test
instruments.
W X Warning
The i30s and i30 may only be used and handled by
qualified personnel. To avoid personal injury, follow
these precautions:
• To avoid electric shock, use caution during
installation and use of this product; high
voltages and currents may be present in circuit
under test.
• Do not use the product if damaged. Always
connect probe to display device before it is
installed around the conductor.
• Always ensure the probe is removed from any
live electric circuit, and leads are disconnected
before removing the battery cover.
• Use the Current Probe only as specified in the
operating instructions; otherwise the current
probe’s safety features may not protect you.
• Adhere to local and national safety codes.
Individual protective equipment must be used
to prevent the shock and arc blast injury where
hazardous live conductors are exposed.
• Do not hold the Current Probe anywhere
beyond the tactile indicator.
• Before each use, inspect the Current Probe.
Look for cracks or missing portions of the
Current Probe housing or output cable
insulation. Also look for loose or weakened
components. Pay particular attention to the
insulation surrounding the jaws.
• Use caution when working with voltages above
60 V dc, 30 V ac rms or 42 V ac peak. Such
voltages pose a shock hazard.
• Use of this equipment is designed to protect
against transients in equipment in fixed
equipment installations, such as distribution
panels., feeders and short branch circuits, and
lighting systems in large buildings.
• Use of this equipment in a manner not specified
herein may impair the protection provided by
the equipment.
• CAT III equipment is designed to protect against
the transients in the equipment in fixed
equipment installations, such as distribution
panels, feeders and short branch circuits, and
the lighting systems in large buildings.
Specifications
Electrical Characteristics
All accuracies stated at 23°C ± 1°C
Current range 20 A AC
Measuring range ± 30 A
Overload capacity 500 A
Output sensitivity 100 mV/A
Accuracy (at 25 °C) ± 1 % of reading ± 2 mA
Resolution ± 1 mA
Typical output noise
200 µV
level
Load impedance > 100 k Ohms ≤ 100 pF
Conductor position
± 1 % relative to center reading
sensitivity
Frequency range
i30s DC to 100 kHz (0.5 dB)
i30 DC to 20 kHz (0.5 dB)
di / dt following 20 A / µs
Response time Better than 1 µs
Temperature
± 0.01 % of reading / °C
coefficient
Operating humidity: 15 to 85 % (non
Altitude: 2000 m
Power supply 9 V Alkaline, NEDA 1604/PP3
IEC 6LR61
Working voltage
300 V AC
(see Safety
Standards)
Battery life 30 hours, low battery indicator
or DC
RMS
RMS
condensing)C
or DC
RMS
General Characteristics
Maximum conductor
size
Output cable and
connections:
i30s 2 m cable terminated with a BNC
i30 1.5 m cable terminated with a dual
Output zero Manual adjust via thumbwheel
Operating temperature
range
Storage temperature
range (with battery
removed)
Weight 290 g
19 mm diameter
connector (50 Ohms) supplied
with a 4 mm safety adaptor
4 mm banana safety plug
0 to +50 °C
-20 to +85 °C
Typical Performance Plots
10
1
0
-1
Gain in dB
-2
-3
10 100
0.00
-0.50
-1.00
-1.50
Gain in dB
-2.00
-2.50
-3.00
10
0
-5
-10
-15
-20
Frequency in Hz
1000
i30s
Frequency in Hz
1000 10000
i30
Typical Frequency Response
Frequency in Hz
1000
i30s
100000
100000
100000
ehr01.eps
Phase Shift in Degrees Phase Shift in Degrees
-10
-15
-20
10
0
-5
1000 20000
i30
100000
ehr02.eps
Typical Frequency Response
Frequency in Hz
2.00
1.50
1.00
0.50
50 mA
0.00
-0.50
-1.00
% Error of Reading
-1.50
-2.00
5 10 15 20 25 30
A
i30s
2.00
1.50
1.00
0.50
50 mA
0.00
-0.50
-1.00
% Error of Reading
-1.50
-2.00
5 10 15 20 25 30
A
i30
ehr03.eps
Typical Accuracy Curve
Safety Standards
BS EN 61010-1: 2001
BS EN 61010-2-032: 2002
BS EN 61010-031: 2002
CSA C22.2 No. 1010.1
300 V
, Category III, Pollution degree 2
RMS
Use of the probe on uninsulated conductors is limited to 300 V
ACRMS or DC and frequencies below 1 kHz.
EMC Standards
BS EN 61326: 1998 +A1, A2, and A3.
Operating Instructions
6 7
3
2
1
Figure 1. i30s & i30 AC/DC Current Clamps
5
4
1 LED
2 Zero Adjust
3 Battery Cover
4 ON/OFF Switch
5 Protective Barrier
6 Jaws
7 Battery Cover
Screw (Captive)
ehr04.eps
W Warning
To avoid injury, when using the probe ensure that
your fingers are behind the protective barrier as
shown in Figure 1. Do not use the probe if any part
of the probe, including the lead and connector(s),
appear to be damaged or if a malfunction of the
instrument is suspected.
Clean the case periodically by wiping it with a damp cloth and
detergent. Do not use abrasive cleaners or solvents. Do not
immerse the probe in liquids.
Switch On
When the probe is switched on, the red LED will illuminate. The
LED starts flashing when the battery voltage is too low for normal
operation and warns the user that it requires changing. This
procedure is described below.
Zero Adjustment
The output zero offset voltage of the probe may change due to
thermal shifts and other environmental conditions. To adjust the
output voltage to zero, depress the thumbwheel and rotate.
Ensure that the probe is away from the current carrying
conductor whilst the adjustment is made.
Current Measurement
1. Switch on the probe using the On – Off switch and
check that the LED is lit.
2. Connect the output lead to an oscilloscope, multimeter,
or other measuring equipment.
3. If necessary adjust the probe output voltage to zero as
described in section Zero Adjustment.
4. Clamp the jaw of the probe around the conductor
ensuring a good contact between the closing faces of
the jaws.
5. Observe and take measurements as required. Positive
output indicates that the current flow is in the direction
shown by the arrow on the probe.
Battery Replacement
W Warning
To avoid personal injury, always ensure the probe is
removed from any live electric circuit, and leads are
disconnected before removing the battery cover.
Never operate the probe without the battery cover
fitted.
The red LED will flash when the minimum operating voltage is
approached. Refer to Fig.1. Use the following procedure:
1. Unclamp the probe from the conductor, turn it off using
the On – Off switch and disconnect the output leads,
from external equipment.
2. Loosen the captive screw that secures the battery
cover. Lift the cover through 30° and pull it clear of the
probe body as shown in Fig 1. The battery is then
accessible. Replace the battery and re-fit the battery
cover and fasten the screw.
Note
Replacement with other than the specified type of
battery will invalidate the warranty.
Fit only the type 9 V PP3 Alkaline (MN 1604).
LIMITED WARRANTY AND LIMITATION OF
LIABILITY
This Fluke product will be free from defects in material and
workmanship for one 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.
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
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