6-phase Protective Relay Tester
VAE-660 - VA Technology Co. Ltd. (Va-Tek)
The VAE-660 Six-phase protective relay tester is designed to test all the major protection testing projects, including the 27 under frequency protection, 59 overcurrent protection, 67 under voltage protection, 81 over frequency protection, 87 differential protection, 51 time overcurrent protection, 50 boundary protection, 21 distance protection, 86 rate of change of frequency protection, and 32 directional power protection, and others.