Aplab Limited, ISO 9001-2000 certified company offers LV Surge Tester, Model SWT 4. LV Surge Tester is a powerful instrument to pre-locate the fault distance and exactly locate the fault point in a short time. LV Surge Tester offers 500J energy on 2 and 4 KV ranges that allows its use on LT networks effectively. SWT 4 LV Surge Tester has built-in current coupler that can be used to get the fault distance measurement carried out on a suitable TDR on Impulse Current Mode. LV Surge Tester can also be coupled to other instrument compliments such as Arc Reflection Filter to get reliable results of the fault distance.