The 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.

Testing can be carried out with the SWER in service and no disconnection of earth electrodes is required.

Mitton Instruments - ST1000 SWER - Earth Ground Tester(Single Wire/Return)

  • Please allow 4-5 weeks for this product to arrive.

    This product comes with a 1 year manufacturer warranty. 

    • Range: 10 mΩ – 1,999 Ω
    • Input voltage: 0 – 300 Vrms
    • Current inputs voltage range 3 Vrms
    • SLA battery
    • Dimensions: 270 x 240 x 125 mm
    • Weight: 1 kg