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Development of High Voltage Permissible Loadcenter

Public Domain


Details

  • Personal Author:
  • Description:
    This report makes recommendations for new approval and testing criteria for high-voltage permissible loadcenters (transformer and switchgear, greater than 4,160 v) for underground U.S. mines and describes the development and testing of a prototype loadcenter to meet the criteria. The recommended criteria included new findings in several areas: minimum clearances between live conductors, special precautions for using organic insulators, tests for dielectric strength and electrical stress, and explosion testing. A research test program was conducted to evaluate the pressure rise caused by a high-energy arcing fault (10,000 a) with and without a simultaneous methane-air explosion inside the enclosure. The prototype loadcenter included a 1,250-k V.A, 7,200-v primary transformer inside a center compartment with separate, attached enclosures for high-voltage switchgear on one end and low-voltage distribution and protection on the other end. A comprehensive literature search was conducted, and a state-of-the-art review of research and industrial experience with high-voltage explosion-proof transformers is included. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Subseries:
    Open File Report
  • Document Type:
    Text
  • Genre:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    PRC - Pittsburgh Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    1-136
  • NIOSHTIC Number:
    nn:10005162
  • NTIS Accession Number:
    PB86-215803
  • Citation:
    NTIS: PB 86-215803 :136 pages
  • Federal Fiscal Year:
    1986
  • Performing Organization:
    Foster-Miller, Inc.
  • Peer Reviewed:
    False
  • Source Full Name:
    NTIS: PB 86-215803
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:8f797f5c72b5143a3d950d42bdc4991d9e13ce6fa6191f8ac28466211c91112170d697c9cc3e04904d4e38b5fa8761d586bd59587b188e3981bdc3c22afc28e0
  • Download URL:
  • File Type:
    Filetype[PDF - 6.92 MB ]
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