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3U Conduction-Cooled Mechanical Housing Assembly (MHA)
Qualification Test Report

PDF print version of this specification : A4 or Letter

The 3U Conduction-Cooled Mechanical Housing Assembly (3U CC MHA) is a versatile, rugged enclosure for 3U Single Board Computer (SBC) based embedded systems, as used in varied Airborne, Vehicular and Naval applications. The MHA can be configured for use with standard 3U CompactPCI, VME, VPX or other custom backplanes.

The 3U CC MHA has dual-redundant hot-swap power supplies, connected in a load-sharing topology, capable of operating from a wide AC input range and supplying standard DC output rails. On-board power line filtering is implemented to limit susceptibility to EMI and RFI.

The modular rear-I/O connector plate can easily be customised to suit any end application. Resilience to shock and vibration can be enhanced using external shockmounts.

The 3U CC MHA is designed for highest levels of resilience to mechanical shock, vibration, temperature, dust and salt fog.

Features

  • Support for various 3U backplanes (CompactPCI, VME, VPX, custom)

  • Two to eight CompactPCI or VME card slots in the standard configuration

  • Rugged, lightweight aliminium construction

  • Optional dual-redundant power supplies

  • Optional external shockmounts

  • Conduction cooling

  • Optional forced-air cooling

  • Rugged and reliable military circular connectors

3U CC MHA with open lid

3U CC MHA with open lid

3U CC MHA with fan cooling

3U CC MHA with fan cooling

3U CC MHA without fan cooling

3U CC MHA without fan cooling

Specifications
Mechanical Construction Aliminium Construction
Freestanding (with or without shockmounts)
Rear mounted handles
Card Space Inner card cage
Two to eight 3U card slot backplane
Support for hot swap
Vertical card orientation
Conduction-cooled cards
Thermal Management Conduction cooling via finned side panels
Optional forced-air cooling with fans
Backplane Type Standard (CompactPCI, VME, VPX) and custom 3U options
Power Supply Dual-redundant hot swap power supplies (application specific rating) EMI / RFI power line filtering
I/O Interface Fully customisable rear I/O area 210 mm x 100 mm (height x width)
Switches and Indicators Optional front and rear panel switches and indicators :
  • Power Switch
  • Battleshort Switch
  • BIT Status Indicators
Surface Finish Black anodised aliminium
IP Rating IP-65 (IEC-60529)
Acoustic Noise 0 dB without fan cooling
42 dB with fan cooling
Maximum Power Dissipation
Baseplate Temperature20 C30 C40 C50 C60 C70 C
Power Dissipation without fan cooling270 W230 W190 W160 W110 W80 W
Power Dissipation with fan cooling370 W320 W280 W240 W210 W170 W

Characteristics
Physical Dimensions (height x width x depth) Mass
Conduction-Cooled 260 mm x 220 mm x 330 mm 12,0 kg +- 0,5 kg
Air Cooled 260 mm x 220 mm x 365 mm 12,5 kg +- 0,5 kg

Environmental Specifications
Grade Industrial Ruggedised
Temperature
- Operating
- Storage
 
-15 C to +75 C
-50 C to +85 C
 
-40 C to +85 C
-60 C to +125 C
Relative Humidity 0% to 100% 0% to 100%
Shock 60 g for 5 ms, 1/2 sine
30 g for 10 ms, 1/2 sine
60 g for 5 ms, 1/2 sine
30 g for 10 ms, 1/2 sine
Vibration 5 g (peak) 10 Hz to 100 Hz
0,1 g/Hz 15 Hz to 2 kHz
5 g (peak) 10 Hz to 100 Hz
0,1 g/Hz 15 Hz to 2 kHz
EMC RE, CE, RS, CS iaw MIL-STD-461C for military equipment

Part Designations
Part Designation Grade Cooling Formfactor Backplane
CCII/MHA/3UAC/CPCI/xy/IND Industrial Air Cooled 3U CompactPCI
CCII/MHA/3UCC/CPCI/xy/IND Industrial Conduction-cooled 3U CompactPCI
CCII/MHA/3UAC/CPCI/xy/RGD Ruggedised Air Cooled 3U CompactPCI
CCII/MHA/3UCC/CPCI/xy/RGD Ruggedised Conduction-cooled 3U CompactPCI
CCII/MHA/3UAC/VME/xy/IND Industrial Air Cooled 3U VME
CCII/MHA/3UCC/VME/xy/IND Industrial Conduction-cooled 3U VME
CCII/MHA/3UAC/VME/xy/RGD Ruggedised Air Cooled 3U VME
CCII/MHA/3UCC/VME/xy/RGD Ruggedised Conduction-cooled 3U VME
CCII/MHA/3UAC/VPX/xy/IND Industrial Air Cooled 3U VPX
CCII/MHA/3UCC/VPX/xy/IND Industrial Conduction-cooled 3U VPX
CCII/MHA/3UAC/VPX/xy/RGD Ruggedised Air Cooled 3U VPX
CCII/MHA/3UCC/VPX/xy/RGD Ruggedised Conduction-cooled 3U VPX

[x] is one of 1 or 2, denoting the number of power supplies
[y] is one of 2, 3, 4, 5, 6, 7 or 8, denoting the number of card slots

For example : CCII/MHA/3UAC/CPCI/26/IND is an Industrial Grade Air Cooled 3U Mechanical Housing Assembly with a CompactPCI backplane providing 8 card slots and 2 power supplies.


MHA3UCC  Rev.0.4 2013-11-05
CCII Systems (Pty) Ltd P.O. Box 171 Rondebosch 7701  South Africa 
Telephone : (+27 21) 683 5490 Facsimile : (+27 21) 683 5435 WWW : www.ccii.co.za