Gary Allen Zevenbergen
Engineers at Urban Ct, Arvada, CO
License number
Colorado 27480
Issued Date
Feb 5, 1991
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
6014 Urban Ct, Arvada, CO 80004
Professional information
Ground Potential Rise Monitor
US Patent:
8223031, Jul 17, 2012
Filed:
Jul 27, 2011
Appl. No.:
13/191725
Inventors:
Zachery Warren Allen - Mandan ND, US
Gary Allen Zevenbergen - Arvada CO, US
Gary Allen Zevenbergen - Arvada CO, US
Assignee:
The United States of America as represented by the Department of Energy - Washington DC
International Classification:
G08B 21/00
US Classification:
340662, 340657, 340660
Abstract:
A device and method for detecting ground potential rise (GPR) comprising a first electrode, a second electrode, and a voltage attenuator. The first electrode and the second electrode are both electrically connected to the voltage attenuator. A means for determining the presence of a dangerous ground potential is connected to the voltage attenuator. The device and method further comprises a means for enabling one or more alarms upon the detection of the dangerous ground potential. Preferably, a first transmitter/receiver is connected to the means for enabling one or more alarms. Preferably, a second transmitter/receiver, comprising a button, is electromagnetically connected to the first transmitter/receiver. Preferably, the means for determining the presence of a dangerous ground potential comprises a means for determining the true RMS voltage at the output of the voltage attenuator, a transient detector connected to the output of the voltage attenuator, or a combination thereof.
Ground Potential Rise Monitor
US Patent:
2010023, Sep 16, 2010
Filed:
Mar 10, 2009
Appl. No.:
12/401033
Inventors:
Zachery W. Allen - Mandan ND, US
Gary A. Zevenbergen - Arvada CO, US
Gary A. Zevenbergen - Arvada CO, US
International Classification:
G08B 21/00
US Classification:
340662
Abstract:
A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location.If user input is received at a remote location acknowledging the first alarm, a first alarm acknowledgment signal is transmitted. The first alarm acknowledgment signal is then received at which time the first alarm is disabled.