Used to measure and analyse the influence of supply voltage on energy meter
Completely in accordance with IS 13779, IEC 62053 etc.
As per IEC 62053-21, IS 13779 clause 12.7.2
TEST1: Output V 1(100% of adjusted output) will be OFF for 1sec and then ON for 50msec, step will be repeated for 3 cycles.
TEST2: Output V1 is made OFF for 20msec and then made ON after completing 20msec.
TEST3: OP2 (SSR2) is made ON; OP1 (SSR1) is made OFF for 1min.