Accession Number:

AD1159336

Title:

Report of Test of 750 Volt D.C. Voltmeter with Wax-Filled Multiplier Compartment

Descriptive Note:

[Technical Report, Formal Report]

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1939-10-10

Pagination or Media Count:

10

Abstract:

The instrument was inspect0d for compliance with the dimensional requirements of specifications, reference b, for 3-12 flush mounting d-c instruments. The meter was subjected to high relative humidity at both 50c and room temperature for a period of 27 days, and the effect noted on the d-c resistance between the terminals as well as on the accuracy of the instrument as a voltmeter. It was heated to a temperature of 65C and chilled to a temperature of -10c to determine if the humidity seal was affected at these temperatures. The instrument was subjected to a severe vibration test. The temperature rise at the outside of the case was noted after the instrument had been operated at full scale voltage for several hours,

Descriptors:

Subject Categories:

  • Machinery and Tools
  • Thermodynamics

Distribution Statement:

[A, Approved For Public Release]