[D8442ZBC], Letter from William Symes Andrews to Samuel Insull, February 14th, 1884

Item

Abstract

Replies to his wrt Y dynamo at Bellefonte. According to tests by Dickson dynamo rated at 1200 rpm, 112 volts, 276 amps, or load of 550 10cp lamps. But in operation finds that dynamo should run at 1400 rpm b/c droop on feeders and mains; need dynamo voltage of 128. "The practical drop of EMF is never considered when testing machines and therefore their proper running speed is always rated too low."

Recipient

Date

1884-02-14

Decade

1880-1889

Type

Identifier

D8442ZBC

Folder Set

D8442

Title

[D8442ZBC], Letter from William Symes Andrews to Samuel Insull, February 14th, 1884

Microfilm ID

74:641

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University