An electrical test tool called a clamp meter combines a conventional digital multimeter with a current sensor. Clamps are used to measure current. Voltage is measured through probes. An electrical meter with a hinged jaw allows personnel to clamp the jaws around a wire, cable, or other conductor at any point in an electrical system and measure current without disconnecting or deenergizing it.
Unique 40A high-precision low current measurement–0.01A high-resolution, 1.6% high-precision measurement
The clamps are slim, lightweight, and portable, making them ideal for use in small, confined spaces
The large backlight display facilitates readings in dark environments
Current frequency measurement
Precision down to 0.01A and 0.1V
1000A/600A AC/DC current measurement (319/317)
600V AC/DC voltage measurement
4000 Ohms resistance measurement
Continuity beeper
Auto off function enhances battery life, meaning the instrument can work when you need it screen store ‘hold’ function for capturing a measurement result on the screen
One year warranty
What's Included?
Test Leads
Soft Carrying Case
Three AAA batteries (Installed)
317/319 User Manual
Specifications
General specifications
Digital display
6000 count resolution
Low battery Indication
Displays a signal when the batteries are below their required voltage
Power source
Three AAA IEC LR03 batteries
Clamp opening size
1.45 in (37 mm)
Jaw diameter
1.45 in (37 mm)
Dimensions (L x W x H)
6.39 x 2.29 x 1.20 in
(162.4 x 58.25 x 30.5 mm)
Weight
Approximately 13.5 oz (384 g) (batteries included)
Auto range
Available in Ohms
Safety
CE
EN/IEC 61010-1 and IEC 61010-2-032
Measurement Category: 600V CAT III
317 Electrical specifications
Current AC
Range
40.00 A, 600.0 A
Resolution
0.01 A, 0.1 A
Accuracy
1.6% ±6 digit (50-60 Hz) {40 A}
2.5% ±8 digit (60-500 Hz) {40 A}
1.5% ±5 digit (50-60 Hz) {600 A}
2.5% ±5 digit (60-500 Hz) {600 A}
Crest Factor add 2% into spec for CF > 2
3.0 Max @ 500 A, 2.5 Max @ 600 A
AC response
rms
Current DC
Range
40.00 A, 600.0 A
Resolution
0.01 A, 0.1 A
Accuracy
1.6% ±6 digit (40 A)
1.5% ±5 digit (600 A)
Voltage AC
Range
600.0 V
Resolution
0.1 V
Accuracy
1.5% ±5 digit (20-500Hz)
AC response
rms
Voltage DC
Range
600.0 V
Resolution
0.1 V
Accuracy
1% ±4 digit
Resistance
Range
400.0 Ω, 4000 Ω
Resolution
0.1 Ω, 1 Ω
Accuracy
1% ±5 digit
Continuity
≤ 30 Ω
Inrush
Integration time
N/A
Frequency
Range
N/A
Accuracy
N/A
Trigger Level
N/A
319 Electrical specifications
Current AC
Range
40.00 A, 600.0 A, 1000 A
Resolution
0.01 A, 0.1 A, 1 A
Accuracy
1.6% ±6 digit (50-60 Hz) {40 A}
2.5% ±8 digit (60-500 Hz) {40 A}
1.5% ±5 digit (50-60 Hz) {600/1000 A}
2.5% ±5 digit (60-500 Hz) {600/1000 A}
Crest Factor add 2% into spec for CF > 2
3.0 Max @ 500 A, 2.5 Max @ 600 A, 1.4 Max @ 1000 A
AC response
rms
Current DC
Range
40.00 A, 600.0 A, 1000 A
Resolution
0.01 A, 0.1 A, 1 A
Accuracy
1.6% ±6 digit (40 A)
1.5% ±5 digit (600/1000 A)
Voltage AC
Range
600.0 V
Resolution
0.1 V
Accuracy
1.5% ±5 digit (20-500Hz)
AC response
rms
Voltage DC
Range
600.0 V
Resolution
0.1 V
Accuracy
1% ±4 digit
Resistance
Range
400.0 Ω
4000 Ω
Resolution
0.1 Ω
1 Ω
Accuracy
1% ±5 digit
Continuity
≤ 30 Ω
Inrush
Integration time
100 ms
Frequency
Range
5.0 – 500.0 Hz
Accuracy
0.5% ±5 digit
Trigger Level
10 – 100 Hz ≥ 5 A, 5 – 10 Hz, 100 – 500 Hz ≥ 10 A
The accuracy specifications aply at 73 °F ±41 °F (23 °C ±5 °C)
Below 64 °F and above 82 °F (18 °C and above 28 °C) accuracy degrades at (0.1) times specification per °C.
True rms for ac V and ac A accuracy is specified from 5% to 100% of range.
Environmental specifications
Operating temperature
14°F to 122°F (-10 °C to 50 °C)
Storage temperature
-40 °F to 140 °F (-40 °C to 60 °C)
Operating humidity
Non-condensing (< 50>
90% RH (50 °F to 86 °F) (10 °C to 30 °C)
75% RH (86 °F to 104 °F) (30 °C to 40 °C)
45% RH (104 °F to 122 °F) (40 °C to 50 °C)
(Without condensation)
Operating altitude
1 mile (2000 meters) above mean sea level
Storage altitude
7 miles (12,000 meters) above mean sea level
IP Rating
IP40
Vibration requirements
Random MIL-PRF-28800F Class 2, 5-500 Hz, 30 minutes per axis
Drop test requirements
3 ft (1 m) drop test, six sides, oak floor
EMI, RFI, EMC
Instrument unspecified for use in EMC field ≥ 0.1 V/m
The Fluke 323 clamp meter is a good basic troubleshooting tool for commercial and residential electricians. It includes True RMS measurements, optimized ergonomics, and large display for efficient troubleshooting. It’s designed to perform in the toughest environments and provide noise-free, reliable results, so you can trust it to help you confidently diagnose problems almost anywhere. Use it to verify the presence of load current, AC voltage, and continuity of circuits, switches, fuses and contacts. Its slim, compact size and rugged design make it well suited for measuring current up to 400 A in tight cable compartments.
Rugged, reliable basic True-RMS clamp meter for measuring current up to 400 A
Measures AC current to 400 A
Measures AC voltage and DC voltage to 600 V
Provides True RMS AC voltage and current for accurate measurements on non-linear signals
Measures resistance to 4 kΩ with continuity detection
Other useful features:
Features slim, ergonomic design for measuring in tight cable compartments
Presents measurements on a large, easy-to-read display
Hold function captures a reading on the display
Features a CAT III 600 V, CAT IV 300 V safety rating
Comes with a two-year warranty and soft carrying case
What's Included?
Test leads
Soft case
User’s manual
Specifications
Specifications
AC current
Range
400.0 A
Accuracy
2% ± 5 digits (45 Hz to 65 Hz)
2.5% ± 5 digits (65 Hz to 400 Hz)
Voltage and current measurements with FieldSense™ technology
The Fluke 377 FC true-rms clamp meter uses FieldSense™ technology to make testing faster and safer, all without contacting a live conductor. You get accurate voltage and current measurements through the clamp jaw. Simply clip the black test lead to any electrical ground, put the clamp jaw around the conductor and see reliable, accurate voltage and current values on the display.
Measure extremely high current with iFlex® probe
Use the included iFlex flexible current probe to measure ac current as high as 2500 A. The iFlex probe provides access to large conductors in tight spaces.
Complete 3-phase measurements in quick, easy steps
Complete 3-phase voltage and current tests in 3 easy steps
Full set of phase-to-ground and phase-to-phase values calculated and shown on the meter
Values are also displayed on your smart phone and saved to the cloud via Fluke Connect software
Phase rotation auto-calculated and shown on the Fluke Connect software
No more hand-written notes or complicated math.
Easy to see, easy to use with included tools
Your job will get easier when you use the 377 FC clamp meter. The display turns green when a stable FieldSense measurement is detected. Visual Continuity also provides a bright green screen for easy detection of continuity in noisy work areas.
Record, analyze, share results with Fluke Connect® software
With Fluke Connect software you can remotely log, trend and monitor measurements to pinpoint intermittent faults. Fluke Connect also allows you to gather data as the basis for a preventive maintenance program.
What's Included?
Fluke 377 FC Non-Contact Voltage True-RMS AC/DC Clamp Meter
TL224 Test Leads
TP175 TwistGuard™ Test Probes
AC285 black grounding clip (1 only)
i2500-18 iFlex® Flexible Current Probes 18 inch (48 cm)
TPAK ToolPak™ Magnetic Meter Hanger
Premium carrying case
Quick reference guide
Specifications
General specifications
General Maximum Voltage between any Terminal and Earth Ground
1000 V
Battery
Type
2 AA IEC LR6 alkaline
Life
200 hour
Display
Dual readout
Automatic Power Off
20 minutes
Electrical
AC Current: Jaw
Range
999.9 A
Resolution
0.1 A
Accuracy
2 % ±5 digits (10 Hz to 100 Hz)
2.5 % ±5 digits (100 Hz to 500 Hz)
Crest Factor (50/60 Hz)
3 @ 500 A
2.5 @ 600 A
1.42 @ 1000 A
Add 2 % for C.F. >2
AC Current: Flexible Current Probe
Range
2500 A
Resolution
1 A (≤2500 A) 0.1 A (≤999.9 A)
Accuracy
3 % ±5 digits (5 Hz to 500 Hz)
Crest Factor (50/60Hz)
3.0 at 1100 A
2.5 at 1400 A
1.42 at 2500 A
Add 2 % for C.F. >2
Position Sensitivity
Distance from Optimum
i2500-10 Flex
i2500-18 Flex
Error
A
0.5 in (12.7 mm)
1.4 in (35.6 mm)
± 0.5 %
B
0.8 in (20.3 mm)
2.0 in (50.8 mm)
± 1.0 %
C
1.4 in (35.6 mm)
2.5 in (63.5 mm)
± 2.0 %
Measurement uncertainty assumes centralized primary conductor at optimum position, no external electrical or magnetic field, and within operating temperature range.
DC Current
Range
999.9 A
Resolution
0.1 A
Accuracy
2 % ±5 digits1
[1]When using the ZERO function to compensate for offsets
AC Voltage: Field Sense
Range
1000 V
Resolution
1 V (≤1000V)
Accuracy
≤4/0 AWG
3 % ±5 digits (45 Hz to 66 Hz)
≥4/0 AWG
5 % ±5 digits (45 Hz to 66 Hz)
Position wire as close as possible to jaw opening (see illustration).
AC Voltage: Test Leads
Range
600.0 V 1000 V
Resolution
0.1 V (≤600.0 V)
1 V (≤1000 V)
Accuracy
1 % ±5 digits (20 Hz to 500 Hz)
DC Voltage
Range
600.0 V
1000 V
Resolution
0.1 V (≤600.0 V)
1 V (≤1000 V)
Accuracy
1 % ±5 digits
mV dc
Range
500.0 mV
Resolution
0.1 mV
Accuracy
1 % ±5 digits
Amps Frequency: Jaw
Range
5.0 Hz to 500.0 Hz
Resolution
0.1 Hz
Accuracy
0.5 % ±5 digits
Trigger Level
5 Hz to 10 Hz, ≥10 A
10 Hz to 100 Hz, ≥ 5 A
100 Hz to 500 Hz, ≥ 10 A
Amps Frequency: Flexible Current Probe
Range
5.0 Hz to 500.0 Hz
Resolution
0.1 Hz
Accuracy
0.5 % ±5 digits
Trigger Level
5 Hz to 20 Hz, ≥25 A
20 Hz to 100 Hz, ≥20 A
100 Hz to 500 Hz,≥25 A
Resistance
Range
60.00 kΩ
6000 Ω
600.0 Ω
Resolution
0.1 Ω (≤600.0 Ω)
1 Ω (≤6000 Ω)
10 Ω (≤60.00 kΩ)
Accuracy
1 % ±5 digits
Capacitance
Range
1000 μF
Resolution
0.1 μF (≤100.0 μF)
1 μF (≤1000 μF)
Accuracy
1 % ±4 digits
Mechanical
Size (L x W x H)
274 mm x 86 mm x 47 mm
Weight (with Batteries)
463 g
Jaw Opening
34 mm
Flexible Current Probe Diameter
7.5 mm
Flexible Current Probe Cable Length (head to electronics connector)
1.8 m
Rogowski Coil Length
450 mm
Environmental
Operating Temperature
-10 °C to 50 °C
Storage Temperature
-40 °C to 60 °C
Operating Humidity (without condensation)
Non condensing (<10> ≤90 % RH (10 °C to 30 °C)
≤75 % RH (30 °C to 40 °C)
≤45 % RH (40 °C to 50 °C)
Temperature Coefficients
Add 0.1 x specified accuracy for each degree C >28 °C or <18>
Ingress Protection
IEC 60529: IP30 (jaw closed)
Operating Altitude
2000 m
Storage Altitude
12 000 m
Electromagnetic Compatibility (EMC)
International
IEC 61326-1: Portable Electromagnetic Environment
IEC 61326-2-2, CISPR 11: Group 1, Class B
Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio frequency energy that is necessary for the internal function of the equipment itself.
Class B: Equipment is suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes.
Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected to a test object.
Korea (KCC)
Class A equipment (Industrial Broadcast & Communications Equipment)
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.
USA (FCC)
47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.
Safety
General
IEC 61010-1: Pollution degree 2
Measurement
IEC 61010-2-032: CAT III 1000 V / CAT IV 600 V
IEC 61010-2-033: CAT III 1000 V / CAT IV 600 V
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