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Fluke 378 Non-Contact Voltage True-rms AC/DC Clamp Meter with iFlex

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  • Measure voltage and current with the clamp jaw of the Fluke 378 clamp meter.
  • FieldSense™ technology in the Fluke 378 give you faster, safer testing.
  • Fluke 378 includes clamp, leads, grounding clip, iFlex high-current probe, magnetic hanging strap, premium carrying case.
  • The Fluke 378 Clamp Meter gives you accurate voltage and current measurements through the clamp jaw without touching a live wire.

Key features

  • Measure voltage and current with your clamp jaw
  • Faster, safer testing - all without touching a live wire - using FieldSense™ technology
  • Power quality indicator shows whether equipment or power line is faulty
  • Complete 3-phase voltage and current tests in 3 quick steps

Product overview: Fluke 378 Non-Contact Voltage True-rms AC/DC Clamp Meter with iFlex

Voltage and current measurements with FieldSense™ technology

The Fluke 378 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.

Power quality indicator shows whether a problem is in the equipment or the power line

The 378 clamp meter includes a unique PQ function that senses power quality issues automatically. When making FieldSense measurements, the 378 will detect and display power quality issues, relating to current, voltage, power factor or any combination of the three. Now you can quickly determine if an upstream supply problem exists, or if there is a downstream equipment problem.

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
  • No more hand-written notes or complicated math.

Measure extremely high current with iFlex® probe

The included iFlex flexible current probe lets you measure ac current as high as 2500 A. Crowded wiring cabinets and large conductors are easily measured with the iFlex probe.

Easy to see, easy to use with included tools

Your job will get easier when you use the 378 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.

What's in the box:

The 378 current clamp includes:

  • 378 Non-Contact Voltage True-RMS Clamp Meter
  • iFlex flexible current probe (18 inches; 48 cm)
  • TL224 silicone insulated test leads
  • TP175 adjustable length test probes
  • AC285 grounding clip (black, quantity one)
  • TPAK magnetic hanging kit, with 9 inch (23 cm) hanging strap
  • Premium Carrying case
  • Quick reference guide

Specifications: Fluke 378 Non-Contact Voltage True-rms AC/DC Clamp Meter with iFlex

General specifications
General Maximum Voltage between any Terminal and Earth Ground1000 V
BatteryType2 AA IEC LR6 alkaline
Life200 hour
DisplayDual readout
Automatic Power Off20 minutes
Electrical
AC Current: Jaw
Range999.9 A
Resolution0.1 A
Accuracy2 % ±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
Range2500 A
Resolution1 A (≤2500 A) 0.1 A (≤999.9 A)
Accuracy3 % ±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
Flexible current probeDistance from Optimumi2500-10 Flexi2500-18 FlexError
A0.5 in (12.7 mm)1.4 in (35.6 mm)± 0.5 %
B0.8 in (20.3 mm)2.0 in (50.8 mm)± 1.0 %
C1.4 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
Range999.9 A
Resolution0.1 A
Accuracy2 % ±5 digits1
[1]When using the ZERO function to compensate for offsets
AC Voltage: Field Sense
Range1000 V
Resolution1 V (≤1000V)
Accuracy≤4/0 AWG3 % ±5 digits (45 Hz to 66 Hz)
≥4/0 AWG5 % ±5 digits (45 Hz to 66 Hz)
Position wire as close as possible to jaw opening (see illustration).
AC Voltage: Test Leads
Range600.0 V 1000 V
Resolution0.1 V (≤600.0 V)
1 V (≤1000 V)
Accuracy1 % ±5 digits (20 Hz to 500 Hz)
DC Voltage
Range600.0 V
1000 V
Resolution0.1 V (≤600.0 V)
1 V (≤1000 V)
Accuracy1 % ±5 digits
mV dc
Range500.0 mV
Resolution0.1 mV
Accuracy1 % ±5 digits
Amps Frequency: Jaw
Range5.0 Hz to 500.0 Hz
Resolution0.1 Hz
Accuracy0.5 % ±5 digits
Trigger Level5 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
Range5.0 Hz to 500.0 Hz
Resolution0.1 Hz
Accuracy0.5 % ±5 digits
Trigger Level5 Hz to 20 Hz, ≥25 A
20 Hz to 100 Hz, ≥20 A
100 Hz to 500 Hz,≥25 A
Resistance
Range60.00 kΩ
6000 Ω
600.0 Ω
Resolution0.1 Ω (≤600.0 Ω)
1 Ω (≤6000 Ω)
10 Ω (≤60.00 kΩ)
Accuracy1 % ±5 digits
Capacitance
Range1000 μF
Resolution0.1 μF (≤100.0 μF)
1 μF (≤1000 μF)
Accuracy1 % ±4 digits
Mechanical
Size (L x W x H)274 mm x 86 mm x 47 mm
Weight (with Batteries)463 g
Jaw Opening34 mm
Flexible Current Probe Diameter7.5 mm
Flexible Current Probe Cable Length (head to electronics connector)1.8 m
Rogowski Coil Length450 mm
Environmental
Operating Temperature-10 °C to 50 °C
Storage Temperature-40 °C to 60 °C
Operating Humidity (without condensation)Non condensing (<10 °C)
≤90 % RH (10 °C to 30 °C)
≤75 % RH (30 °C to 40 °C)
≤45 % RH (40 °C to 50 °C)
Temperature CoefficientsAdd 0.1 x specified accuracy for each degree C >28 °C or <18 °C
Ingress ProtectionIEC 60529: IP30 (jaw closed)
Operating Altitude2000 m
Storage Altitude12 000 m
Electromagnetic Compatibility (EMC)
InternationalIEC 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
GeneralIEC 61010-1: Pollution degree 2
MeasurementIEC 61010-2-032: CAT III 1000 V / CAT IV 600 V
IEC 61010-2-033: CAT III 1000 V / CAT IV 600 V
Current Clamp for Leakage Current MeasurementsIEC 61557-13: Class 2, ≤30 A/m

Reviews: Fluke 378 Non-Contact Voltage True-rms AC/DC Clamp Meter with iFlex

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