Power terminal protection device
US5327316A · kind A · utility
7Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1990 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Oct 9, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Metal oxide varistors are connected in parallel with grounded capacitors to oad outlet terminals coupled to a power source through inductor coils forming a low pass filter with the capacitors to delay propagation of a voltage increasing transient pulse to the power source until ground shunting paths of low resistance are developed in the varistors. Electromagnetic shielding partitions the inductor from the capacitors and varistors within a power outlet box mounting the load outlet terminals to prevent interference with absorption of transient energy by the varistors during the delay in establishing the ground shunting paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.