The Ohmstik Plus Live-Line Micro Ohmmeter measures the micro-ohm resistance of conductors, connectors, splices and switching devices positioned directly on energized, high voltage lines. Calculates resistance by measuring the AC amperage in the line and the voltage drop due to the resistance of the line segment under test.
This measurement is much more direct than infrared thermography, and is not subject to emmissivity, weather, current loading, background, and other influences that cause infrared errors. Is designed to store up to nine sets of readings on the unit. The ability to hold the multiple readings ends the need to raise and lower the hotstick after each measurement.
The Ohmstik can be used on almost any connection in a utility. Line splices can be checked after installation or after many years of service. Bolted terminals, taps, jumpers, and substation bus bars can be evaluated. Switches, fused disconnect, and normally open switches that have been open for long periods can be measured just after closing. Each of these connections can be measured quickly after installation, or surveyed after long service, to ensure proper resistance.
|Description||Ohmstik Plus||Wide Jaw Ohmstik Plus|
|Sensor Opening||2.5 in (6.35 cm)||3.86 in (9.8cm)|
|Weight||2.4 lbs (1.10 kg)||4.0 lbs (1.81 kg)|
|Frequency, 50 Hz||47 to 53 Hz|
|Frequency, 60 Hz||57 to 63 Hz|
|Range of Operation|
|Voltage Phase to Phase||500 kV|
|Amps 0.9-99.9 A||0,1 A|
|Amps 100-1400 A||1 A|
|Micro-Ohms 1-999||1 µΩ|
|Micro-Ohms 1000-2500||1,0 µΩ|
|Current||± 1% ± 1A|
|Micro Ohms Absolute||± 2%, ± 2 µΩ|
|Micro-Ohms Repeatability||± 1%, ± 2 µΩ|
|EEC Standards||Successfully passed international test standards indicated by CE|
|Controls||Single button operation|
|Operating Temperature||-22° to +140° F, -30 to +60° C|
|Housing||Shock and water resistant molded urethane|
|Hotstick Mounting||Universal chuck adapter (Hotstick not included)|
|Battery||9V Alkaline or Lithium|