The Fluke i410 current clamp is an accessory that extends the range of digital multimeters for measuring current in electrical testing applications. An attached 1.6m output cable connects the clamp to a compatible multimeter that can accept safety-shrouded banana plugs and display 1 milliVolt (mV). It has a clamp that measures AC and DC current to 400 amp. The clamp has two jaws that can close around an electrical conductor up to 30mm in diameter to measure current without touching or interrupting the circuit. It has a zero error adjustment to set the mulitmeter's display to zero for accurate DC readings. The unit operates on one 9V battery. It meets International Electrotechnical Commission (IEC) safety standards 61010-1 and is rated for CAT III installations to 600V, which covers equipment in fixed installations, such as switches in the fixed installation and some industrial equipment that is permanently connected to the fixed installation. The European Conformity (CE) marking indicates compliance with applicable European Union directives. The unit comes with a battery and instructions. Clamp meters are typically used by electrical engineers to measure properties of electrical current without physically touching or disconnecting the conductor.
| Maximum AC input | 400 amp |
| Maximum DC input | 400 amp |
| Output level | 1mV per amp DC or AC |
| Basic accuracy | 3.5% 0.5 amp |
| Installation rating | CAT III, 600V |
| Standards met | IEC safety standard 61010, CE marking |
| Power supply | 9V |
| Weight | 0.5 kg/17.6 oz. |
| Dimensions | 209 x 78 x 48mm/3.09 x 8.21 x 1.87 inches (H x W x D) |
H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Clamp meters, also called clamp-on meters, measure electrical current without cutting through wires, or touching or interrupting the electrical circuit. Available in handheld or benchtop models, clamp meters diagnose problems in electrical equipment, wiring, and power supplies. A current clamp has two jaws that fit around a conductor to take measurements. All clamp meters test for current. Some come with test leads and inputs for measuring voltage, capacitance, and resistance. They display information either in analog or digital form. Factors that influence meter choice include the electrical properties to be measured, the anticipated range of results, and the desired level of protection against transient voltages. Safety ratings are based on International Electrotechnical Commission (IEC) standards for low-voltage test equipment. IEC 61010 delineates four overvoltage installation categories. In general, a meter with a category IV rating will provide more protection against transient voltages than a meter with a lower category rating.
Fluke Corporation manufactures electrical testing tools and software for industrial and commercial applications. The company, founded in 1948, is headquartered in Everett, WA.
