3 PHASE RELAY & METER TEST KIT The above 3 Phase Relay Test Kit is a manual instrument and does not use any Software or Electronic Components except in Meters. It is designed to test following Relays and Meters. Distance Protection Relay Directional /Non-Directional Protection Relay Transformer Differential Protection Relay Generator Protection Relay Under/Over Voltage Protection Relay Synchronous Relay Motor Protection Relay 3Phase, 1Phase W, VAR, PF Meters