A three-phase sag generator for testing industrial equipment

1996 ◽  
Vol 11 (1) ◽  
pp. 526-532 ◽  
Author(s):  
E.R. Collins ◽  
R.L. Morgan
Keyword(s):  
Industrial Equipment ◽  
Three Phase

scholarly journals Forensic Engineering Investigation of Electrical and Electronic Causes of an Industrial Equipment Failure

2022 ◽  
Vol 38 (2) ◽  
Author(s):  
Robert Peruzzi
Keyword(s):  
Electrostatic Discharge ◽  
Equipment Failure ◽  
Industrial Equipment ◽  
Root Cause ◽  
Three Phase ◽  
Forensic Engineering ◽  
Engineering Investigation ◽  
Electrical Contractors ◽  
Random Failures ◽  
Secondary Power

This case involved industrial equipment whose repeated, seemingly random failures resulted in the buyer of that equipment suing the seller. The failures had been isolated to a group of several transistors within electro-mechanical modules within the equipment, but the root cause of those transistors failing had not been determined. The equipment seller had more than 1,000 units in the field with no similar failures. And the electro-mechanical module manufacturer had more than 20,000 units in the field with no similar failures. Electrical contractors hired by the buyer had measured power quality, and reported no faults found in the three-phase power at the equipment terminals. This paper presents circuit analyses of the failing electro-mechanical module, basics of electrostatic discharge damage and protection, and the root cause of these failures — an electrical code-violating extraneous neutral-to-ground bond in a secondary power cabinet.

Test of the stability of a three-phase contact line with negative line tension

1999 ◽  
Vol 96 (9) ◽  
pp. 1335-1339 ◽  
Author(s):  
ALAN E. VAN GIESSEN, DIRK JAN BUKMAN, B.
Keyword(s):  
Contact Line ◽  
Line Tension ◽  
Phase Contact ◽  
Three Phase ◽  
The Stability

Simple new PWM patterns for thyristor three-phase AC/DC convertors

1986 ◽  
Vol 133 (6) ◽  
pp. 354 ◽  
Author(s):  
S.K. Biswas ◽  
M.S. Mahesh ◽  
B.S.R. Iyengar
Keyword(s):  
Three Phase
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