Technical Data
Fluke 355/353
True-rms 2000 A Clamp Meters
High current and
a large jaw, make
these clamps
well suited for
industrial and
utility applications
Confidently take reliable readings
with the true-rms, Fluke 355/353
Clamp Meters; the tools of choice
for high-current measurements
up to 2000 A. The extra-wide
jaw easily clamps around large
conductors typically found in high-
current applications. The rugged
design and CAT IV 600 V, CAT III
1000 V ratings, add an extra ele-
ment of protection when taking
high-powered measurements.
Accurate peak measurements
can be taken using the in-rush
current mode, ideal for motors
and inductive loads. The 355 also
measures voltage and resistance,
making this the most versatile tool
for utilities, electrical contractors,
and industrial service technicians.
• Reliably handle a wide range of high-current
applications with 2000 A ac + dc true-rms,
1400 A ac, and 2000 A dc
• The large 58 mm (2.3 in) jaw capacity is suitable for
large, or multiple conductors
• CAT IV 600 V, CAT III 1000 V rating for added user
protection
• In-rush current measurement captures ‘power-on’
surge current with accuracy and repeatability
• High voltage measurement of 1000 V ac + dc
true-rms, 600 V ac, and 1000 V dc allows users to
perform multiple tests with only one tool (355 only)
• Resistance to 400 kW coupled with a continuity
beeper, provide the convenience of a multimeter
(355 only)
• Accurately measure frequency up to 1 kHz for
optimum troubleshooting
• Quickly analyze readings using the MIN, MAX, and
AVG functions
• A large backlit display allows for easy visibility in
low-lit areas
• Use the display hold feature to capture readings
even when the display cannot be viewed
• Use the low-pass filter to smooth out noisy loads
and stabilize readings
N10140
2 Fluke Corporation Fluke 355/353 True-rms 2000 A Clamp Meters
Specifications
Electrical specifications
Current measurement dc and ac 10 Hz to 100 Hz
Range Resolution Accuracy, A Trigger Level for
Inrush
Trigger Level
for Hz
Filter OFF
Trigger Level
for Hz
Filter ON
40 A 10 mA 1.5 % rdg + 15 digits 0.50 A 2.50 A 0.50 A
400 A 100 mA 1.5 % rdg + 5 digits 5.0 A 2.5 A 2.5 A
2000 A;
1400 ac rms
1 A 1.5 % rdg + 5 digits 5 A 8 A 8 A
Crest Factor (50/60 Hz)
Range Crest Factor*
40 A 2 @ 33 A, 2.4 @ 27 A
400 A 2 @ 330 A, 2.4 @ 270 A
2000 A; 1400 ac rms 2 @ 1000 A, 2.4 @ 833 A
*Add 2 % to error spec for CF > 2
Current measurement ac 100.1 Hz to 1 kHz
Range Resolution Accuracy > 10 A Trigger Level for
Inrush
Trigger Level
for Hz
Filter OFF
Trigger Level
for Hz
Filter ON
40 A 10 mA 3.5 % rdg + 15 digits 0.50 A 2.50 A 0.50 A
400 A 100 mA 3.5 % rdg + 5 digits 5.0 A 2.5 A 2.5 A
2000 A;
1400 ac rms
1 A 3.5 % rdg + 5 digits 5 A 8 A 8 A
Voltage measurement (355 only) dc and ac 10 Hz to 100 Hz
600 V and 1000 V ranges have 10 % over range to 660 V and 1100 V respectively.
Range Resolution Accuracy Trigger Level for Hz
Filter OFF
Trigger Level for Hz
Filter ON
4 V 1 mV 1 % rdg + 10 digits 0.050 V 0.050 V
40 V 10 mV 1 % rdg + 5 digits 0.25 V 0.25 V
400 V 100 mV 1 % rdg + 5 digits 6 V 6 V
600 V ac rms 1 V 1 % rdg + 5 digits 6 V 6 V
1000 V dc 1 V 1 % rdg + 5 digits N/A N/A
Voltage measurement (355 only) ac 100.1 Hz to 1 kHz
600 V and 1000 V ranges have 10 % over range to 660 V and 1100 V respectively.
Range Resolution Accuracy Trigger Level for Hz
Filter OFF
Trigger Level for Hz
Filter ON
4 V 1 mV 3 % rdg + 10 digits 0.050 V 0.050 V
40 V 10 mV 3 % rdg + 5 digits 0.25 V 0.25 V
400 V 100 mV 3 % rdg + 5 digits 6 V 6 V
600 V ac rms 1 V 3 % rdg + 5 digits 6 V 6 V
Ohms measurement (355 only)
Range Resolution Accuracy
400 W0.1 W1.5 % + 5 digits
4 kW1 W1.5 % + 5 digits
40 kW10 W1.5 % + 5 digits
400 kW100 W1.5 % + 5 digits
3 Fluke Corporation Fluke 355/353 True-rms 2000 A Clamp Meters
Fluke Corporation
PO Box 9090, Everett, WA USA 98206
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. (800) 443-5853 or
Fax (425) 446-5116
In Europe/M-East/Africa +31 (0) 40 2675 200 or
Fax +31 (0) 40 2675 222
In Canada (800) 36-FLUKE or
Fax (905) 890-6866
From other countries +1 (425) 446-5500 or
Fax +1 (425) 446-5116
Web access: http://www.fluke.com
©2007 Fluke Corporation.
Specifications subject to change without notice.
Printed in U.S.A. 9/2007 3094045 D-EN-N Rev A
Fluke. Keeping your world
up and running.®
Ordering information:
Fluke-353 AC/DC True-rms Clamp Meter, 2000 A, Amps only
Includes: C43 Soft Carrying Case, 6 AA batteries, and users manual
Fluke-355 AC/DC True-rms Clamp Meter, 2000 A
Includes: C43 Soft Carrying Case, 6 AA batteries, TL224 1.5 m
Silicone Rubber Test Leads, TP2 Test Probes, AC285 Alligator Clips,
and users manual
Continuity beeper (355 only)
On at ≤ 30 W
Off at ≥ 100 W
Frequency measurement
Measurement range 5.0 Hz to 1 kHz
Resolution 0.1 Hz (15 Hz to 399.9 Hz); 1 Hz (400 Hz to 1 kHz)
Accuracy – 5.0 Hz to 100 Hz 0.2 % + 2 counts
Accuracy – 100.1 Hz to 1 kHz 0.5 % + 5 counts
Trigger level Refer to current and voltage tables
General specifications
Batteries Six 1.5 V AA NEDA 15 A or IEC LR6
Battery life (with typical usage, backlight off) 100 hours
Test leads Rated to 1000 V
Weight .814 kg (1.8 lb)
Jaw size 58 mm (2.28 in)
Dimensions (LxWxD) 300 mm x 98 mm x 52 mm (12 in x 3.75 in x 2 in)
Safety rating IEC 61010-2-032, 600 V CAT IV, 1000 V CAT III
Environmental specifications
Operating temperature 32 °F to + 122 °F (0 °C to +50 °C)
Storage temperature -4 °F to 140 °F (-20 °C to +60 °C)
Operating humidity 0 to 95 % (non-condensing)
Operating altitude 2000 m
Storage altitude 10,000 m
IP rating 42 (indoor use only)
Drop test requirements 1 m
EMI, RFI, EMC FCC part 15, IEC/EN 61326-1:1997 class B, IEC/EN
61326:1997 3V/m, performance criteria B, EN61325
Temperature coefficients Current: 0.1 % of reading per °C outside 22 °C to 24 °C
Voltage: 0.1 % of reading per °C outside 22 °C to 24 °C
Fluke-353Fluke-355
