This range of 19" racks has a rigid structure
composed of welded
aluminum frames. It provides particularly high load capacity and
offers
24 different sizes and large range of assembly options, according
to the
customer requirements.
Data
Load capacity: 600 kg.
Impermeability: IAW IP 54
Option EMI/RFI protection
Scope
This document defines the qualification
test procedure for rack 35U.
Applicable Documents
MIL-STD-810E Environmental test
methods and engineering guidelines.
General
The purpose of this test is to
verify that the 35U rack shall withstand the basic transportation
vibration requirements.
Testing item configuration. Dummy
loads are placed on a rack to simulate a typical weight. Center
of gravity will be used for this test.
Test requirements
The test shall be performed according
to MIL-STD-810E, method 514.4 category I - basic] transportation,
figure 514.4-1.
Pass/Fail criteria: If no visible
distortions and cracks occur in the rack structure the unit
has passed the test.
The rack shall be attached to the
vibration fixture to simulate the actual installation. The rack
fixture shall be attached hard mounted to the vibration platform.
Pretest
Perform an overall visual examination
of the rack.
Record the unit part number and serial number.
Record the actual environmental laboratory equipment P/N; S/N
and date of calibration expire.
Step By step Procedure
Step
1
Mount the test unit on the vibration
fixture. Attach accelerometers to monitor the response. Conduct
a visual examination and record the results.
Step
2
Expose the unit to 1-hour vibration
to the level described in figure 1 in the vertical axis.
Step
3
At the conclusion of 1-hour vibration
visually inspect the unit and record results.
Step
4
Repeat steps 2 and 3 in two additional
axis (Y & Z) and the same vibration level.
Step
5
Perform an overall visual examination
and record results.
