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Megger 250260 Ground Resistance Tester
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Megger 250260 Ground Resistance Tester



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Megger 250260

Data Sheet

Applications:

  • Utility poles
  • Distribution transformers
  • Residential wiring systems
  • Lightning arresters
  • Computer grounds
  • Machinery safety grounds
  • Telecommunication and data transmission systems
  • Railway electric substations and signal systems
  • Antistatic grounds
 Features:
  • Measures ground resistance down to 0.5 ohm
  • Reads directly in ohms on a single range scale
  • Stable calibration — requires no field adjustments
  • Checks probe resistance and battery condition
  • Powered by replaceable C cells
  • Limits output to 50 volts open circuit, 5 mA short circuit
  • Weighs less than 3 lb (1.5 kg)


  Description

The Three-Terminal Ground Resistance Tester is the economical choice for electrical contractors, plant electricians, telephone and CATV technicians making
routine ground resistance tests on single electrodes and other simple grounding systems. The instrument is easy to use for quick measurement of resistances from 0.5 to 500 ohms.

Because factors such as seasonal variations in temperature, moisture and salt content affect soil resistivity, periodic tests are essential to ensure that resistance to ground remains at a safe value.

The instrument is simple to operate:

  • Drive probes and hook up the leads.
  • Push switch to READ and ground resistance is displayed directly.
  • If reading is questionable, switch to CHECK to verify test lead continuity and probe resistance.

Designed for simplicity of use, the instrument is operated by a single three-position switch to read the measurement, check the probe resistance and turn the instrument off. Measurements are displayed directly in ohms; range
changing, multipliers or calibration adjustments are not
necessary.



  Optional Accessories:
 
Megger Accessory kit, Cat. No. 250560, includes probes, leads, ground rods and a
calibration standard

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  Models, Options, & Accessories


Model Description List Price Sale Price
250260 3-Terminal Analog Ground Tester; Battery
$835.00 
250261 Please call or email us for pricing and availability.
Model Accessories List Price Sale Price
250942 Please call or email us for pricing and availability.
19111 Please call or email us for pricing and availability.
250560 Standard Kit for 250260
$235.00 
250574 Set of Three Color-Coded Test Leads for 250260
$195.00 
250584 Pair of 11" Ground Rods
$60.00 
250580 Pair of 20" Ground Rods
$70.00 
250582 Pair of 30" Heavy-Duty Ground Rods
$105.00 
10245 Please call or email us for pricing and availability.
250578 Please call or email us for pricing and availability.
217719 Rigid Vinyl Instrument & Accessory Case for 250260
$120.00 
250855 Padded Instrument & Accessory Case for 250202, DET5/4R, DET5/4D & DET62D
$195.00 


  Specifications

Input
Power Source Four C alkaline batteries
Output
Test Frequency Cat. No. 250260: 135 Hz
Cat. No. 250261: 121.6 Hz
Maximum Output Voltage 50 V
Maximum Test Current 5 mA
Accuracy 1 to 100 ½: ±2% of full-scale deflection
500 ½: ±4% of full-scale deflection
Range
0.5 to 500 ½
Interference
2 V peak to peak
Dimensions
7.5 H x 6.5 W x 4.75 D in.
(190 H x 165 W x 120 D mm)
Weight
2.8 LB (1.3 KG)

   
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