ST1000 SWER

ST 1000 SWERThe ST1000 is designed to measure the earth electrode resistance of Single Wire Earth Return Systems.

It uses the SWER transformer (isolation or distribution) load currents to provide the measurement signals and accepts two CT inputs and one voltage input.

Specifications

  • Range: 10 mΩ – 1,999 Ω
  • Resolution: 1 mΩ
  • Accuracy: 0.5 % reading ± 2 digits > 1 Ω; 1 % < 1 Ω
  • Input impedance on voltage channel: 2 MΩ
  • Input voltage on voltage channel: 300 Vrms max
  • Input voltage current channels 1 & 2: 3 Vrms max
  • Current channel ranges: 10 mV/A; 100 mV/A; 1 V/A
  • Operating frequency: 50/60 Hz
  • Display: reflective graphical LCD
  • Power supply: 6 V sealed lead acid
  • Battery life: approx 35 hrs
  • Graphical battery indicator
  • Weight: 2 kg
  • Dimensions: 270 mm x 240 mm x 125 mm