GE Industrial Solutions EntelliGuard R AKD-5 - Manual (Page 34)

33 EntelliGuard R Circuit Breaker Retrofill AKD-5 Installation Manual DEH-41547 02/12
The wiring harness for the secondary disconnects, located on the AKD-5 retrofill cassette, has 21 wire
connections (grouped in three blocks (A, B, C)) for AK50 or 28 wire connections (grouped in 4 blocks (A, B,
C, D)) for AK25, with seven wire connections for each block). Each wire is clearly labeled, or identified,
with wire markers or tags. Each wire on the 21-wire harness is connected to a bullet. Each bullet, when
the cassette is racked in, engages with its respective points in the switchgear. The wires for Block A are
identified as A1, A2,…A7. Block B wiring is likewise labeled as B1, B2, B3,….B7. Block C contains C1,
C2,….C7. The end, opposite of the bullets, maps or connects to the retrofill EntelliGuard R Cassette
78-point, secondary-disconnect. For example, if bullets A1 and A4 are reserved for the motor, they
connect to points A1 and A2 on the cassette’s 78-point, secondary-disconnect for a motor. Each breaker
needs to be landed in the field based on the specifics breakers wiring diagram and modifications made
in the field.
Figure 44 is a photo of the AKD-5—AK25 harness and Figure 45 is an AKD-5—AK25 C-block photo.
Figure 44. AK25 Harness, Top View Figure 45. AK25 C-Block Harness
Wiring Diagram and Block Info (AK25)
Additional wire markers, cable ties, spade terminals, and sticky pads are provided. Refer to the AK wiring
scheme (Figure 46) and land the wires on EG-fixed secondary-disconnects. Wires are cut to size and
crimped with the terminal lugs, and provided with wire markers. Harness by cable ties is completed and
overhanging wires are checked. Similar to the AKD-5 AK25, the AKD-5 AK50 breaker roll-in replacement
uses a similar wire harness and is mounted on the cassette. For further information on blocks and
secondary-disconnects see
Wiring Diagram for the AK/AKR Retrofill on Page44 .
1. Get these tools needed for the task: Philips head screw driver, wire strippers, wire crimps, tie-wraps.
2. Identify each bullet using the legacy wiring diagram and any changes that were made to the legacy
compartment. Four-wire ground fault CTs are wired through a dedicated neutral disconnect vs. the
secondary bullets.