Megger BT51/120 Digital Low Resistance Ohmmeter

The Megger BT51/120 digital microhmmeter measures resistance in un-energized lines in substation equipment, transmission lines, bond testing, domestic and industrial wiring, and other electrical systems. This digital meter has manual range selectioin for flexibility of use. The unit is designed for 120V operation. The 2A test current is used on two different ranges. The 0 to 2,000 milliohm range has a resolution of 1 milliohm, while the 0 to 20 milliohm range has a resolution of 0.01 milliohm for greater accuracy. The unit is safety rated to International Electrotechnical Commission standard IEC61010-1. The BT51/120 is used by electricians and electrical contractors.

Specifications

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.

Electrical test meters report electrical circuit properties, such as voltage, resistance, capacitance, and continuity. Available in handheld or benchtop form, they detect electrical problems in equipment, wiring, and power supplies. A variety of probes, clamps, and leads can be used to connect the meter to a circuit or device. Single-function meters, such as battery testers and voltage testers, measure one property of a circuit, and multimeters measure multiple properties. Electrical test meters display information either in analog form using a needle that moves on a calibrated scale, or in digital form on an LED screen. Meters have electrical properties that are to be measured and the anticipated range of results, and should have a rating that is higher than the maximum value of the anticipated range. Meters measure electrical properties and are safety rated to measure a specific range of results. The range on the meter should be higher than the maximum anticipated value to be measured. An electrical test meter has multiple settings corresponding to potential ranges of values for the properties it can measure. A manual ranging meter requires the operator to flip through different settings until the correct range is reached. An autoranging meter cycles through range settings automatically until it reaches the correct range.

Megger manufactures equipment for cable fault locating, protective relay testing, telecommunications and data integrity, and power quality testing under multiple brand names, among them Megger, Biddle, States, and AVO. The company, founded in 1889, is headquartered in Dover, England, and meets International Organization for Standardization (ISO) 9001:2008 standards.

What’s in the Box?

• BT51/120 DLRO
• (2) Duplex hand spikes with 2.5m (8 ft.) test leads
• Supply lead for battery charger
• Instructions