Versatile and rugged tools for applications with high currents
Confidently take reliable readings with the True-rms, Fluke 355 and 353 digital clamp meters; the tools of choice for high current clamp-on amp meter measurement up to 2000 A. The extra-wide jaw easily clamps around large conductors, typically found in high-current applications. The extra rugged design and CAT IV 600 V, CAT III 1000 V ratings add an extra element of user 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 an ideal clamp meter for utilities, electrical contractors and industrial service technicians.
Features
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 the user to perform multiple tests with only one tool (355 only)
Resistance to 400K ohms coupled with a continuity beeper provide the convenience of a multimeter in a clamp meter. (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
Specifications
Electrical specifications
Current measurement dc and ac 10 Hz to 100 Hz
Range : 40 A
Resolution: 10 mA
Accuracy, A: 1.5 % rdg + 15 digits
Trigger Level for
Inrush: 0.50 A Trigger Level
for Hz
Filter OFF: 2.50 A Trigger Level
for Hz
Filter ON: 0.50 A
Range : 400 A
Resolution: 100 mA
Accuracy, A: 1.5 % rdg + 5 digits
Trigger Level for
Inrush: 5.0 A Trigger Level
for Hz
Filter OFF: 2.5 A Trigger Level
for Hz
Filter ON: 2.5 A
Range : 2000 A;
1400 ac rms
Resolution: 1 A
Accuracy, A: 1.5 % rdg + 5 digits
Trigger Level for
Inrush: 5 A Trigger Level
for Hz
Filter OFF: 8 A Trigger Level
for Hz
Filter ON: 8 A
Crest Factor (50/60 Hz)
Range : 40 A
Crest Factor* : 2 @ 33 A, 2.4 @ 27 A
Range : 400 A
Crest Factor* : 2 @ 330 A, 2.4 @ 270 A
Range : 2000 A; 1400 ac rms
Crest Factor* : 2 @ 1000 A, 2.4 @ 833 A
Current measurement ac 100.1 Hz to 1 kHz
Range : 40 A
Resolution: 10 mA
Accuracy > 10 A : 3.5 % rdg + 15 digits
Trigger Level for
Inrush: 0.50 A
Trigger Level
for Hz
Filter OFF : 2.50 A
Trigger Level
for Hz
Filter ON : 0.50 A
Range : 400 A
Resolution: 100 mA
Accuracy > 10 A : 3.5 % rdg + 5 digits
Trigger Level for
Inrush: 5.0 A
Trigger Level
for Hz
Filter OFF : 2.5 A
Trigger Level
for Hz
Filter ON : 2.5 A
Range : 2000 A;
1400 ac rms
Resolution: 1 A
Accuracy > 10 A : 3.5 % rdg + 5 digits
Trigger Level for
Inrush: 5 A
Trigger Level
for Hz
Filter OFF : 8 A
Trigger Level
for Hz
Filter ON : 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 : 4 V
Resolution: 1 mV
Accuracy: 1 % rdg + 10 digits
Trigger Level for Hz
Filter OFF: 0.050 V
Trigger Level for Hz
Filter ON: 0.050 V
Range : 40 V
Resolution: 10 mV
Accuracy: 1 % rdg + 5 digits
Trigger Level for Hz
Filter OFF: 0.25 V
Trigger Level for Hz
Filter ON: 0.25 V
Range : 400 V
Resolution: 100 mV
Accuracy: 1 % rdg + 5 digits
Trigger Level for Hz
Filter OFF: 6 V
Trigger Level for Hz
Filter ON: 6 V
Range : 600 V ac rms
Resolution: 1 V
Accuracy: 1 % rdg + 5 digits
Trigger Level for Hz
Filter OFF: 6 V
Trigger Level for Hz
Filter ON: 6 V
Range : 1000 V dc
Resolution: 1 V
Accuracy: 1 % rdg + 5 digits
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: 4 V
Resolution: 1 mV
Accuracy: 3 % rdg + 10 digits
Trigger Level for Hz
Filter OFF: 0.050 V
Trigger Level for Hz
Filter ON: 0.050 V
Range: 40 V
Resolution: 10 mV
Accuracy: 3 % rdg + 5 digits
Trigger Level for Hz
Filter OFF: 0.25 V
Trigger Level for Hz
Filter ON: 0.25 V
Range: 400 V
Resolution: 100 mV
Accuracy: 3 % rdg + 5 digits
Trigger Level for Hz
Filter OFF: 6 V
Trigger Level for Hz
Filter ON: 6 V
Range: 600 V ac rms
Resolution: 1 V
Accuracy: 3 % rdg + 5 digits
Trigger Level for Hz
Filter OFF: 6 V
Trigger Level for Hz
Filter ON: 6 V
Ohms measurement (355 only)
Range: 400 Ω
Resolution: 0.1 Ω
Accuracy: 1.5 % + 5 digits
Range: 4 kΩ
Resolution: 1 Ω
Accuracy: 1.5 % + 5 digits
Range: 40 kΩ
Resolution: 10 Ω
Accuracy: 1.5 % + 5 digits
Range: 400 kΩ
Resolution: 100 Ω
Accuracy: 1.5 % + 5 digits
Continuity beeper (355 only)
On at ≤ 30 Ω
Off at ≥ 100 Ω
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
*Add 2 % to error spec for CF > 2
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
