5600 Micro-Ohmmeter

To prevent accidental shocks and assure safety of personnel, as well as to reduce or eliminate down time, a regular program of testing insulation resistance is strongly recommended. It helps to detect deterioration of insulation in order to schedule repair work such as vacuum cleaning, air lance leaning, steam cleaning, drying and rewinding. It is also helpful when evaluating the quality or repairs before equipment is put back into operation. The Micro-Ohmmeter Model 5600 performs reliable low resistance measurements with test currents to 10 A and resolution to one micro-ohm.

The Model 5600 uses a four-wire Kelvin bridge method, which eliminates test lead resistance for a measurement accuracy of 0.25%. A reverse polarity switch compensates for the effect of DC voltage interference on the accuracy and permits reading averaging. A built-in circuit filters against AC signals.

The Micro-Ohmmeter Model 5600 is housed in a sealed field case. Power is supplied by a long-life NiCad battery with a built-in charger (110/220 V). The large, easy-to-read LCD is 18 mm high; it displays the value of resistance, and indicates over-range and reversed connection of measurement leads. Four LEDs on the front panel indicate measurement faults (open circuit, blown fuse, etc.); thermal protection; low battery and battery charging.

For operator safety and instrument protection, the Micro-Ohmmeter is fuse protected at the inputs. Two fuses, accessible on the front panel, protect against stored energy in inductive loads. Enhanced internal circuitry protect against kickback when the current is shut off. A built-in thermal switch protects the ohmmeter against overheating on the 10 A range when in continuous use.

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