Rack protection monitor

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873146

Orr, Stanley G ^[1]

---

1. Wheaton, IL

A hardwired, fail-safe rack protection monitor utilizes electromechanical relays to respond to the detection by condition sensors of abnormal or alarm conditions (such as smoke, temperature, wind or water) that might adversely affect or damage equipment being protected. When the monitor is reset, the monitor is in a detection mode with first and second alarm relay coils energized. If one of the condition sensors detects an abnormal condition, the first alarm relay coil will be de-energized, but the second alarm relay coil will remain energized. This results in both a visual and an audible alarm being activated. If a second alarm condition is detected by another one of the condition sensors while the first condition sensor is still detecting the first alarm condition, both the first alarm relay coil and the second alarm relay coil will be de-energized. With both the first and second alarm relay coils de-energized, both a visual and an audible alarm will be activated. In addition, power to the protected equipment will be terminated and an alarm signal will be transmitted to an alarm central control. The monitor can be housed in a separate enclosure so as to provide an interface between a power supply for the protected equipment and the protected equipment.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• DOE Contract Number: AC02-76CH03000
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 6100807
• OSTI ID: 873146
• Country of Publication: United States
• Language: English

Related Subjects

rack
protection
monitor
hardwired
fail-safe
utilizes
electromechanical
relays
respond
detection
condition
sensors
abnormal
alarm
conditions
smoke
temperature
wind
water
adversely
affect
damage
equipment
protected
reset
mode
relay
coils
energized
detects
coil
de-energized
remain
results
visual
audible
activated
detected
sensor
detecting
addition
power
terminated
signal
transmitted
central
control
housed
separate
enclosure
provide
interface
supply
alarm signal
alarm condition
alarm relay
power supply
adversely affect
alarm conditions
abnormal condition
rack protection
protection monitor
normal condition
monitor utilizes
detection mode
/340/335/