Obsolete Test & Measurement Products
ELT-S Earth circuit impedance tester626000255
Earth loop tester
The Earth Loop Impedance Tester ELT-S has been engineered especially for measuring the phase rotation, earth loop resistance via neutral (N), earth loop impedance via phase (L) and net impedance of LV-installations, all according to the EN 61557 regulation. The instrument is fully electronic and can perform line and loop impedance on single- or three phase systems. It is also possible to measure the loop resistance between neutral and earth without tripping the RCD’s.
- Earth loop impedance
- Earth loop resistance between neutral and earth
- Prospective short circuit current (Ipsc)
- Net impedance between phase and neutral lines and between two phase lines on a three phase system
- The condition of the protective earth potential (safe or dangerous)
Frequency three phase rotation field
The ELT-S has an internal memory with 500‑locations for storing the measured values. These stored values can easily be transferred to a PC via the RS232 port.
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