... 1A one piece, 5A one piece-Current Injection, model SL-7-Test console,model TC-20-Current cable set Software is simple, used ... fault and the ratio mistake. Technical Specifications: Instrument Transformer Tester, Model ITC-C -Input: Power Frequency: 50Hz±0.5Hz, Power ... class:1.0 -Timing range:0-999S Primary Current Injector, model SL-7: -Rated capacity:20KVA-Input voltage : 0~250V -Output current ...