Abstract :
The following discussion and closure were received too late to be included with the papers and discussions: "Effect of a Modern Amplidyne Voltage Regulator on Underexcited Operation of Large-Turbine Generators" [Author\´s closure of paper 52-164 by W.G. Heffron and R.A. Phillips, published in Power Apparatus and Systems, August 1952, pages 692-697] and "Field Tests on 135-Kv 3,500,000-Kva Low-Oil Content Circuit Breakers" [Additional discussion of paper 52-242 by Lloyd Morgan, Paul Wildi, and W.H. Clagett, published in Power Apparatus and Systems, October 1952, pages 938-946].