เครื่องวัดกราวด์ดิน เครื่องวัดความต้านทานสายดิน UNI-T UT522 Digital Earth Ground Resistance Tester AC Earth Insulation Resistance Tester 

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UT522 series can perform precise 3-wire and simple 2-wire earth resistance measurement for power and electrical systems, lightning protection equipment, and g round system of all electrical equipment. This series is UNI-T’s introductory earth resistance tester with high economic value. Its lightweight design is convenient for fieldwork.

Features

• Over range indication, test lead connection alarm
• TEST button for fast capture of measurement values
• 20-group data storage/recall
• Backlight
• Data hold
• Auto power off/battery check
• Earth voltage measurement

Specifications

• Model: UT522
• Earth Resistance (Ω)
  • 0～40Ω Accuracy ±(2%+20)
  • 0～400Ω Accuracy ±(2%+3)
  • 0～4000Ω Accuracy ±(2%+3)
• AC Earth Voltage (V) ±(1%+6)
  • 0～400V Accuracy
  • Frequency: 50Hz/60Hz
• Display Count: 14000
• Manual Range: √
• Auto Power Off: About 10 minutes
• Low Battery Indication: √
• Data Hold: √
• Data Storage: 20 groups
• LCD Backlight: √
• Full Icon Display: √
• Double Insulation Protection: √
• Contact Badness Indication: Port C or Port E don't contact Display"- - - - Ω" 
• Over-Range Display: Display OL
• Simple 2-Wire Testing: √
• Precision 3-Wire Testing: √

General Characteristics

• Power: 1.5V batteries (5#) X 6(NO)
• LCD Size: 70.6mm X 34mm
• Product Color: Red and grey
• Product Net Weight: 560g
• Product Size: 160mm X 100mm X 70.5mm

Standard individual packing

• 1 * UT522 Digital Earth Ground Resistance Tester
• 2 * Simple test lead,
• 3 * Standard with clip test line
• 2 * Auxiliary grounding nail
• 1 * Gift Box

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