User's Manual

Product description 57
Pedestal (NT8D27AB)
The NT8D27AB pedestal is a base unit made of die-cast construction and
houses the power distribution unit, system monitor, blower unit, and fan
unit connector. One pedestal is required per equipment column.
The pedestal is approximately 31.5 inches wide by 25.50 inches deep by 10
inches high and weighs 30 lbs empty. Leveling feet are provided for up to
four tiers, while a caster option is provided for up to two tiers. Input power
for the system is brought into and distributed by the pedestal. A Power
Distribution Unit located in the pedestal contains an EMI filter and one 30
amp circuit breaker.
One pedestal distributes the input power for one column. Also located in
the pedestal are two forced air impellers and a reusable dust filter. The
impellers are protected by two 1 amp circuit breakers.
Top cap (NT7DQO)
.-
The top cap is mounted on the top module of each column. It provides
additional EM1 shielding, air exits, and I/O cable exits.
The top cap is approximately 31.5 inches wide by 22 inches deep by 3
inches high and weighs 8 lbs. It consists of a front and a rear air exhaust
grills, each secured by two clips underneath the edge of the grill. ._
Three versions of the top cap are available:
- NT7DOOAA AC systems
- NT7DOOBA DC systems
- NT7DOOAB Meridian 1 System option 21A only
Expansion kit (NT8D49)
The Expansion kit bolts modules together for side-by-side expansion when
in a contiguous row. The Expansion kits also maintain shielding against
EMI/RFl. See Figures 22 and 23.
System overview 553-3001-100