GE Industrial Solutions Neutral Rogowski Current Transformer (CT) - Manual (Page 7)

6 Neutral Assemblies Manual DEH-41531 02/12
Figure 4. Neutral Disconnect Assembly for the AKD-6 AKR30H\50H Retrofill
AKR AKD6 BREAKER SIDE: P/N 10105292G1 COMPARTMENT: P/N 10108266G1
AKD-6/8—Neutral Rogowski Current Transformer (CT)
Neutral Disconnect Assembly (AKD-6—Breaker Side)
Figure 4 shows an exploded view of the breaker side neutral disconnect assembly for the AKD-6 AKR30/30H/50/50H
retrofills. These are available pre-installed and wired at the factory.
Neutral Disconnect Assembly (Bus Compartment)
The AKD-6 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 Retrofill 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.
The Rogowski CT comes mounted on copper bars matching the same hole-pattern as the existing neutral bar. The
existing wires and hardware can be reused if they are not damaged. Note, if existing wires need to be replaced, then
a continuous wire runs from the CT to the Neutral Disconnect in the cubicle. If the threads on the hardware have
become worn out, they need to be replaced with new ones before installation.