Fluke 374 Fluke 374, 375, 376 Users Manual
Fluke 374 Manual
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- Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 1
374/375/376 Clamp Meter Users Manual PN 3608883 July 2010 © 2010 Fluke Corporation. All rights reserved. Printed in China. Specifications are subject to change without notice. All product names are trademarks of their respective companies. - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 2
to extend any other warranty on Fluke's behalf. To obtain service during the warranty period, contact your nearest Fluke authorized service center to obtain return authorization information, then send the product to that Service Center with a description of the problem. THIS WARRANTY IS YOUR ONLY - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 3
Table of Contents Title Page Introduction...1 How to Contact Fluke 2 Safety Information ...3 The Meter ...9 Specifications ...19 Electrical Specifications 19 Mechanical Specifications 26 Environmental Specifications 27 i - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 4
374, 375, 376 Users Manual ii - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 5
Read "Safety Information" before you use the Meter. 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 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 6
374, 375, 376 Users Manual How to Contact Fluke To contact Fluke, call one of the following telephone numbers: • Technical Support USA: 1-800-44-FLUKE (1-800-443-5853) • Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853) • Canada: 1-800-36-FLUKE (1-800-363-5853) • Europe: +31 402-675-200 • - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 7
only as specified in this manual or the protection provided by the Meter can be compromised. • Examine the case before you use the Meter. Look for cracks or missing plastic. Carefully look at the insulation around the connectors. • Never measure current while the test leads are inserted into the - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 8
374, 375, 376 Users Manual • Do not use the Meter around explosive gas, vapor or in damp or wet environments. • Use only type AA batteries, properly installed in the Meter case, to power the Meter. • When measuring current with the Jaw, keep fingers behind the Tactile Barrier. See "The Meter" . • - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 9
374 and 375, do not measure ac/dc current in circuits carrying more than 1000 V or 600 A with the Meter Jaw. • For the 376, do not measure ac/dc current in circuits carrying more than 1000 V or 1000 A with the Meter Jaw. • Never operate the Meter with the back cover removed or the case open. • Do - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 10
374, 375, 376 Users Manual WCaution To avoid possible damage to the Meter or to equipment under test: • Use the proper jacks, function, and range for the measurement application. • Clean the case and accessories with a damp cloth and mild detergent only. Do not use abrasives or solvents. Table 1. - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 11
Clamp Meters Safety Information Symbol Meaning W ® Risk of Danger. Important information. See Manual. Battery. Low battery when shown on display. Examined and licensed by TÜV Product Services. - Do not apply to or remove from HAZARDOUS LIVE conductors. Symbol ) T ; , Meaning Conforms to - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 12
374, 375, 376 Users Manual Symbol Meaning Symbol Meaning IEC Measurement Category III IEC Meter or an overhead or underground utility service. Note The Measurement Category (CAT) and voltage rating of any combination of test probe, test probe accessory, current clamp accessory, and the Meter - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 13
The Meter Clamp Meter Clamp Meters The Meter fig01.eps 9 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 14
374, 375, 376 Users Manual Auto Power Off 20 ON 10 Backlight ON fig02_3.eps - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 15
Display Hold MIN MAX AVG Clamp Meters The Meter = 1x = 2x = 3x 2 sec = Exit fig04_5.eps 11 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 16
374, 375, 376 Users Manual Flexible Current Probe 1 2 0.5 A 12 3 fig06.eps - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 17
Jaw 0.5 A Clamp Meters The Meter Hz (375 & 376) > 5 A > 20 A 1 2 Fig07.eps 13 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 18
374, 375, 376 Users Manual 3 1 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 19
Clamp Meters The Meter dc (375 & 376) fig09_10.eps 15 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 20
374, 375, 376 Users Manual e e 16 R ON - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 21
Clamp Meters The Meter On Off 3 100 ms 1 2 INRUSH 4 fig13_14.eps 17 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 22
374, 375, 376 Users Manual 3 1 2 18 fig11_12.eps - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 23
Specifications AC Current via Jaw Range 374 and 375 600.0 A 376 999.9 A Resolution 0.1 A Accuracy 2 % ± 5 digits (10-100 Hz) 2.5 % ± 5 digits (100-500 Hz) Crest Factor (50/60 Hz 3 @ 500 A (375 and 376 only) 2.5 @ 600 A 1.42 @1000 A (376 only) Add 2 % for C.F. > 2 Clamp Meters Specifications - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 24
374, 375, 376 Users Manual AC Current via Flexible Current Probe Range 2500 A Resolution 374 and 375 0.1 A (≤ 600 A) 1 A (≤ 2500 A) 376 0.1 A (≤ 999.9 A) 1 A (≤ 2500 A) 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 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 25
Position Sensitivity A B C Clamp Meters Specifications Figure 1. Position Sensitivity ghn12.eps 21 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 26
374, 375, 376 Users Manual 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 field, and within operating temperature range. DC Current Range 374 and 375 600.0 A 376 999.9 A Resolution 0.1 A Accuracy 2 % ± 5 digits AC Voltage Range 22 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 27
374 and 375 600.0 V 376 1000 V Resolution 374 and 375 0.1 V 376 0.1 V (≤ 600.0 V) 1 V (≤ 1000 V) Accuracy 1.5 % ± 5 digits (20 - 500 Hz) DC Voltage Range 374 and 375 600.0 V 376 1000 V Clamp Meters Specifications 23 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 28
374, 375, 376 Users Manual Resolution 374 and 375 0.1 V 376 0.1 V (≤ 600.0 V) 1 V (≤ 1000 V) 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 - 500.0 Hz Resolution 0.1 Hz Accuracy 0.5 % ± 5 digits 24 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 29
Hz, ≥5 A 100 - 500 Hz, ≥10 A Frequency via Flexible Current Probe Range 375 and 376 5.0 - 500.0 Hz Resolution 0.1 Hz Accuracy 0.5 % ± 5 digits Trigger Level 5 - 20 Hz, ≥ 25 A 20 - 100 Hz, ≥ 20 A 100 - 500 Hz, ≥ 25 A Resistance Range 374 6000 Ω 375 and 376 60 kΩ Clamp Meters Specifications 25 - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 30
374, 375, 376 Users Manual 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) Accuracy 1 % ± 5 digits Capacitance Range 1000 μF Resolution 0.1 μF (≤ 100 μF) 1 μ F (≤ 1000 μF) Accuracy 1 % ± 4 digits Mechanical Specifications Size (L x W x H - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 31
Clamp Meters Specifications Flexible Current Probe Diameter 7.5 mm Flexible Current Probe Cable Length (head to electronics connector 1.8 m Environmental Specifications Operating Temperature 10 °C - +50 °C Storage Temp 40 °C - +60 °C Operating Humidity Non condensing (< 10 - °C) ≤ 90 % RH (at - Fluke 374 | Fluke 374, 375, 376 Users Manual - Page 32
374, 375, 376 Users Manual Safety Specifications Safety Compliance CAN/CSA-C22.2 No. 61010-1-04 ANSI/UL 61010-1:2004 ANSI/ISA-61010-1 (82.02.01):2004 EN/IEC 61010-1:2001 to 1000V
PN 3608883
July 2010
© 2010 Fluke Corporation. All rights reserved. Printed in China. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
374/375/376
Clamp Meter
Users Manual