GE Industrial Solutions Arc Vault Protection System - Manual (Page 42)

Arc Vault™ Protection System DEH-41483 Rev. 3
Energizing the Switchgear
34 © 2011 General Electric All Rights Reserved
SECTION 9. ENERGIZING THE SWITCHGEAR
BEFORE ENERGIZING
Before switchgear is energized, a thorough final check
should be made using the following checklist. Refer to Final
Steps to Be Taken Before Energizing Equipment (page 26)
for additional information.
• Breakers and other operating mechanisms exercised
• Electrical insulation resistance tested phase-to- phase
and phase-to-ground
• Relays, meters and instruments properly connected
• Electrically operated breakers and operating
mechanisms exercised
• Ground fault protection system tested
• Adjustable trips properly set
• Field wiring secured and free of live bus
• Grounding connections made
• All debris, scrap wire, etc. removed
• All covers installed, doors closed and latched
Uninterruptable Power Supply
Some Arc Vault stacks come equipped with a UPS device
located in the lower compartment. Refer to Figure 9-1.
This GE Digital Energy™ GT Series UPS units is sized
depending on the switchgears control voltage rating.
Start-up instructions are located on pg. 12-13 in the GT
series UPS user manual #5011319902.
The service life of the battery is from 3 to 6 years. It is
advised to regularly perform a battery test to ensure
failsafe operation. When the condition of the battery is
critical, a “Replace Battery” alarm will be activated. Have
the batteries replaced as soon as possible.
For more information call 903-640-7900.
POTENTIAL TRANSFORMER FUSE BLOCK FB1
Located in the controls compartment shown in Figure 3-3
on page 8 is the potential transformer fuse block labeled
FB1.
This fuse block is shipped in the OFF position, with a strip of
tape holding it in place. Remove the fuse block, rotate it 180
degrees and firmly reinsert it to seat it in the ON position.
WARNING
If the fuse block is not installed correctly then the Arc
Vault will not function nor provide protection. This
fuse block passes the arc event voltage and is critical
to the Arc Vault's firing decision.
ENERGIZING PROCEDURES
WARNING
Energizing switchgear for the first time is potentially
dangerous. Therefore, qualified electrical personnel
should be present when the equipment is energized. If
problems caused by damage or poor installation
practices have not been detected in the checkout
procedure described previously, serious damage can
result when power is turned on.
1. Device should be disconnected.
2. There should be no load on the switchgear when it is
energized.
3. Turn off all of the downstream loads, including those
such as motor control centers and other devices which
are remote from the switchgear.
4. The equipment should be energized in sequence by
starting at the source end of the system and working
toward the load end. In other words, energize the main
devices, then the feeder devices, and then the branch-
circuit devices.
5. Turn the devices on with a firm positive motion.
Figure 9-1 UPS