GE Industrial Solutions EntelliGuard R AKD-8 - Manual (Page 39)

38 EntelliGuard R Circuit Breaker Retrofill AKD-8 Installation Manual DEH-41549 02/12
Install AKD-8—Neutral Rogowski Current Transformer (CT)
• Turn off all power to switchgear. Tagout
and lockout main source, up-stream or
main breaker.
• Failure to comply with these instructions
will result in death or serious injury from
severe burns caused by arc flashing that
has exceedingly high temperatures.
• Always wear personal protection
equipment according to OSHA standards
and appropriate to the severity of
potential burns.
• Ensure only qualified personnel install, operate, service, and maintain all electrical
equipment.
AKD-8—Neutral Disconnect Assembly
SKUs Breaker side Compartment Side Outline No
LCS Compt
Interface
AKR AKD8 P/N 10106054G1 10108266G1 139C5016 0343L0806G2
AKR30S P/N 10107106G1 10108216G1 568B220 569B243-0020
Figure 32 shows an exploded view of the breaker side neutral disconnect assembly for the AKD-8
AKR30/30H/50/50H/30L and AKR30S Retrofillls. These are available pre-installed and wired from
the factory.
Figure 32. AKD-8—Neutral Disconnect Assembly for the AKR30H\50H Retrofill
AKD-8—Neutral Disconnect Assembly, Bus Compartment
The AKD-8 EntelliGuard R Circuit Breaker uses an air-core Rogowski Current sensor to measure current level
vs. an iron core CTs used in the legacy AK, AKR breakers. For the Retrofilll to calculate the current levels on
a 4-wire circuit, the Neutral Iron Core CT in the cable compartment needs to be replaced with a Rogowski
style CT.