Other available features and options for AKD-10 OE odule
UL Requirement
AKD-10 OEM Module can be labelled accordingly by if the bus is furnished by GE or by the OEM.
Horizontal Main Bus Rating
The main bus rating will be used to size the main bus that is shipped in excess. The horizontal main bus can be
braced for 100 kA maximum duty. The bus is fabricated from copper, and the bus is sized as follows:
A. 1600A bus consists of (1) 0.400 x 4.00 bar per phase
B. 2000A bus consists of (1) 0.500 x 4.00 bar per phase
C. 2500A bus consists of (2) 0.335 x 4.00 bars per phase
D. 3200A bus consists of (2) 0.400 x 4.00 bars per phase
E. 4000A bus consists of (3) 0.500 x 4.00 bars per phase
Bus Plating
The standard plating is tin for the main, neutral, vertical (riser), and ground bus (when supplied). Fully silver
plated bus is available.
Momentary Bus Bracing ( A RMS Symmetrical)
The vertical bus bars are braced to withstand mechanical forces exerted during a short circuit of 65kA (Standard)
or 100kA (optional) RMS symmetrical. The horizontal bus bars of the main bus when supplied are always
braced for 100kA. Other buswork shall be braced to withstand mechanical forces exerted during a short circuit
equivalent to the maximum interrupting capacity of the associated circuit breakers, or the maximum let-through
current in the case of the load side of a fused circuit breaker.
Insulated / Isolated Bus
Bare copper will be provided as standard for the riser bus and optional
horizontal main bus. The insulated/isolated system fully insulates
the horizontal main bus with fluidized epoxy coating and isolates each
phase of the vertical riser bus with molded polyester glass. If ordered,
the components of the insulated / isolated system will be installed at
the factory with the exception of the optional horizontal main bus and
associated bus insulation hardware which will be shipped excess.
Neutral Bus
There are two (2) positions for the horizontal neutral bus: bottom or top. There are four options for the neutral
bus: none, solid, large frame link, and small frame link. The solid neutral bus comes in one piece. The large
(3200 4000A) and small (800 2000A) frame lin ed neutral buses are separated into three pieces which allow
an in-line neutral current transformer to be easily installed for Main and Tie breaker applications with 4 wire
integral ground fault protection. A large frame link will be used for 30 or 38 wide stacks and a small frame
link will be used for 22 wide stacks. In a transformer transition unit the only options are no neutral or
neutral. The neutral bus will be shipped assembled except for the neutral bus in a transition unit, which will
be shipped excess. Be sure the coordination you need matches that of your transformer.
The horizontal neutral bus is fabricated from copper and is sized as follows:
A. 800/1000A bus contains qty (1) 0.250 x .400
B. 1250A bus contains qty (1) 0.335 x 4.00
C. 1600A bus contains qty (1) 0.400 x 4.00
D. 2000A bus contains qty (1) 0.500 x 4.00
E. 2500A bus contains qty (2) 0.335 x 4.00
F. 3200A bus contains qty (2) 0.400 x 4.00
G. 4000A bus contains qty (2) 0.500 x 4.00
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