Electricity: electrical systems and devices – Safety and protection of systems and devices – Feeder protection in distribution networks
Patent
1991-09-23
1993-04-27
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Feeder protection in distribution networks
361 46, 361103, H02H 300
Patent
active
052067777
ABSTRACT:
A neutral connector of a standard three-phase, three-wire panelboard is replaced by a specific multiple termination assembly having a limited number of terminations specifically adapted for connection to ground at the panelboard, for grounding the termination assembly to the panelboard enclosure, and for connecting the multiple termination assembly to the power conductor of the system grounded phase which is also connected to one pole of the main circuit breaker, main switch or main lug of the panelboard. Standard AIC rated three-pole circuit breakers or fusible switches are wired to three-phase loads in the branch circuits and connected to the three bus bars of the panelboard to connect the grounded phase to the load through the circuit breaker or switch, and to open all phases when operated.
REFERENCES:
patent: 2905923 (1955-02-01), Hammerly
patent: 3611048 (1971-10-01), Shelvik
patent: 3745415 (1973-07-01), Polley et al.
patent: 3769549 (1973-10-01), Bangert, Jr.
patent: 3818282 (1974-06-01), Buxton et al.
patent: 3869649 (1975-03-01), Hobson, Jr.
patent: 5070429 (1991-12-01), Skirpan
Distribution Systems--Grounded or Ungrounded?, Electrical Construction and Maintenance, Apr. 1979, pp. 67-71.
Clarey Robert J.
Reiner Richard A.
Eaton Corporation
Gaffin Jeffrey A.
Vande Zande L. G.
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