Fluke 375 True-RMS AC/DC Clamp Meter
Introduction：
The Fluke 374, 375, and 376 (the Meter) measure true-rms ac current and voltage, dc current and voltage, inrush current, resistance, and capacitance. The 375 and 376 also measure frequency and dc millivolts. The detachable iFlex (Flexible Current Probe) that is included with the 376 (optional with the 374 and 375) expands the measurement range to 2500 A ac. The Flexible Current Probe provides increased display flexibility and allows measurements of awkward sized conductors and improved wire access. The illustrations in this manual show the 376.
| General Specifications | |||||
| AC Current via Jaw | |||||
| Range | 376: 999.9 A
374/375: 600.0A |
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| Resolution | 0.1 A | ||||
| Accuracy | 2% ±5 digits (10 Hz to 100 Hz)
2.5% ±5 digits (100-500 Hz) |
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| Crest Factor (50 Hz/60 Hz) | 3 @ 500 A
2.5 @ 600 A 1.42 @ 1000 A(376 only) Add 2% for C.F. >2 |
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| AC Current via Flexible Current Probe | |||||
| Range | 2500 A | ||||
| Resolution | 374/375: 0.1 A (≤ 600 A) 1 A (≤ 2500 A)
376: 0.1 A (≤ 999.9 A) 1 A (≤ 2500 A) |
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| Accuracy | 3% ±5 digits (5 – 500 Hz) | ||||
| Crest Factor (50/60Hz) | 3.0 at 1100 A(375 and 376 only)
2.5 at 1400 A 1.42 at 2500 A Add 2% for C.F. > 2 |
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| 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 | 374 and 375: 600.0 A
376: 999.9A |
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| Resolution | 0.1 A | ||||
| Accuracy | 2% ±5 digits | ||||
| AC Voltage | |||||
| Range | 374 and 375: 600 V
376: 1000V |
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| Resolution | |||||
| Accuracy | 1.5% ±5 digits (20 Hz to 500 Hz) | ||||
| DC Voltage | |||||
| Range | 374 and 375: 600.0V
376: 1000 V |
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| Resolution | 374 and 375: 0.1 V
376: 0.1 V (≤600.0 V) 1 V (≤1000 V) |
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| Accuracy | 1% ±5 digits | ||||
| mV dc | |||||
| Range | 375 and 376: 500.0 mV | ||||
| Resolution | 0.1 mV | ||||
| Accuracy | 1% ±5 digits | ||||
| Frequency via Jaw | |||||
| Range | 375 and 376: 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 |
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| Frequency via Flexible Current Probe | |||||
| Range | 375 and 376: 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 |
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| Resistance | |||||
| Range | 374: 6000Ω
375 and 376: 60 kΩ |
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| Resolution | 374: 0.1 Ω (≤600 Ω) 1 Ω (≤6000 Ω)
375 and 376: 0.1 Ω (≤600 Ω) 1 Ω (≤6000 Ω) 10 Ω (≤60 kΩ) |
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| Accuracy | 1% ±5 digits | ||||
| Capacitance | |||||
| Range | 1000 μF | ||||
| Resolution | 0.1 μF (≤ 100 μF)
1 μ F (≤ 1000 μF) |
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| Accuracy | 1% ±4 digits | ||||
| Mechanical Specifications | |||||
| Maximum voltage between any terminal and earth ground | 1000 V | ||||
| Batteries | 2 AA, NEDA 15A, IEC LR6 | ||||
| Operating temperature | -10 °C to +50 °C | ||||
| Storage temperature | -40 °C to +60 °C | ||||
| Operating humidity – non-condensing (< 10°C) |
≤90% RH (at 10 °C to 30 °C)
≤75% RH (at 30 °C to 40 °C) ≤45% RH (at 40 °C to 50 °C) |
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| Operating altitude | 3000 m | ||||
| Storage altitude | 12,000 m | ||||
| Size (L x W x H) | 246 x 83 x 43 mm | ||||
| Weight | 388 g | ||||
| Jaw opening | 34 mm | ||||
| Flexible current probe diameter | 7.5 mm | ||||
| Flexible current probe cable length (head to electronics connector) |
1.8 m | ||||
| Safety | IEC 61010-1, Pollution Degree 2
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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| IP rating | IEC 60529: IP30, non-operating | ||||
| Radio Frequency Certification FCC ID | T68-FBLE IC:6627A-FBLE | ||||
Includes:
- 18-inch iFlex® Flexible Current Probe
- TPAK magnetic hanging strap
- Soft carrying case
- TL75 test leads
- Two AA Alkaline batteries
- Coated instruction card
- Safety information sheet
