Ge Vernova — Fact Sheet (June 2025)

3 slides from Ge Vernova's fact sheet, June 2025

Slide 1: Model 685 Current Transformer
Grid Solutions MODEL 685 Current Transformer Window Diameter 7.02” Application Continuous Thermal Relaying and Metering. Current Rating Factor 50:5 thru 2000:5: 2.0 at 30°C. amb., Frequency 1.5 at 55°C. amb. 50-400 Hz. 2500:5 thru 4000:5: 1.33 at 30°C. amb., 1.0 at 55°C. amb. Insulation Level Second
Slide 2: Model 685 ANSI Metering Class at 60 Hz
Model 685 ANSI METERING CLASS AT 60 Hz CATALOG CURRENT RELAY NUMBER RATIO CLASS B0.1 B0.2 B0.5 B0.9 B1.8 685–500 50:5 C10 4.8 4.8 – – – 685–750 75:5 C20 2.4 2.4 4.8 – – 685–101 100:5 C20 1.2 2.4 2.4 4.8 – 685–151 150:5* C20 0.6 1.2 1.2 2.4 4.8 685–201 200:5* C50 0.6 0.6 1.2 1.2 2.4 685–251 250:5* C5
Slide 3: Model 685 Secondary Winding Resistance
Model 685 SECONDARY CURRENT WINDING RATIO RESISTANCE (Ω @ 75°C) 50:5 0.029 75:5 0.043 100:5 0.058 150:5 0.086 200:5 0.118 250:5 0.147 300:5 0.177 400:5 0.236 500:5 0.295 600:5 0.354 800:5 0.472 1000:5 0.590 1200:5 0.708 1500:5 0.884 2000:5 1.039 2500:5 1.298 3000:5 1.558 4000:5 1.956 For more inform