Sealed, 1" pitch, high performance dry-air 3U chassis incorporates five heat exchangers, multi slot heat pipes and air re-circulation fans inside. This conventional format chassis is ideal for applications where ambient air is laden with hostile or harmful contaminants.
Heat generated within the enclosure is conducted to the hollow sidewalls, bottom cover, top cover & rear panel heat exchanger where it is dissipated to the ambient environment by forced air rear fans or by vehicle platform air plenum. Integrated card-cage slot heat pipes provide fast passage for heat to exit the internal card-cage. Internal air recirculation fans ensure constant airflow across modules.
The 3U PENTAHEX-HP chassis is available in 3, 5, 7 & 9 slot versions, supporting Gen 4/5 VPX backplanes. A total PSU power of up to 1075 watts may be installed. Custom modifications can be designed upon customer request.
Internal layout is divided into 4 independent metallic partitions. I/O section at the front, card-cage, PSU section & exhaust fans at the rear. This improves EMI/EMC performance & reduces PSU noise on system electronics.
Conventional "front-to-back" configuration allows for convenient application upgrade and expansion, keeping the same PSU, Front Panel and Fan Packs across systems. The chassis card-cage is designed for wedgelock IEEE P1101.2 conduction-cooled card types.
Slots / Pitch:3 | 5 | 7 | 9 1"
Sealed (Dry Air):≤ 750W
The 3U PENTAHEX-HP chassis is suitable for very high wattage sealed applications that demand superior cooling capability and increased life-cycle scalability. This series of chassis provides the greatest expansion flexibility, system interoperability and lowest upgrade costs for advancing platforms.
PENTAHEX-HP - Chassis Global Thermal Resistance (CGTR):
PENTAHEX-HP 3 Slot: 420W Payload Power (ΔT/W = 0.071°C).
PENTAHEX-HP 5 Slot: 550W Payload Power (ΔT/W = 0.054°C).
PENTAHEX-HP 7 Slot: 650W Payload Power (ΔT/W = 0.046°C).
PENTAHEX-HP 9 Slot: 750W Payload Power (ΔT/W = 0.040°C).
For reliable operation it is recommended the maximum Payload Power not be exceeded. Subject to operating conditions. All CM 3U ATR chassis are delivered tested, qualified and certified per Military Standards MIL-STD-461G & MIL-STD-810H.
The CM PENTAHEX-HP series support only VPX backplanes. Bus slots are tailored for 1 inch pitch standard & deliver full compatibility with 0.8 inch pitch 3U modules.
CM enclosures incorporate a conduction-cooled slot card-cage that accepts all off-the-shelf Conduction Cooled 3U modules.
All 3U backplanes install specific TTL logic circuitry for driving up to 16 front panel user LED indicators.
All PENTAHEX-HP backplanes integrate a Chassis Supervisory System (CSS) for temperature (fans and heaters) and Power Supply control. Remote optoisolated control switches for ‘Battle-short’ & chassis PSU ‘on/standby’ are fitted as standard.
CM 3U military backplanes allow unlimited pin I/O wiring capability. Flexible bottom wiring integration is facilitated by a standard 50mm bottom cavity clearance.
Class 1 military power input connectors fitted on the backplane offer shock & vibration reliability interconnectivity between chassis internal modules & allows high DC current rates with low voltage drops and minimum contact heating.
3U backplanes are supplied with military conformal coating. Printed circuits boards are partially coated per MIL-I-4658C. This is carried out only in areas in which coating the product does not affect VPX or I/O connectors.
All 3U models integrate the same backplane electronics for easy switch-overs, retrofits or replacement parts.
3U PENTAHEX-HP chassis PSUs support a wide variety of DC input voltages (MIL-STD-704 & MIL-STD-1275) and SOSA™ defined DC power output combinations up to 1075 Watts. Available in two high power versions according to number of system slots suit the demand per DC Line of SOSA standard COTS open busses.
All PSU models are fitted with Power Fail Monitor, remote voltage sensing, output voltage trim-up, time-delayed protection fuses, rear fan fuse and DC/DC converter remote shutdown.
To comply with MIL-STD-461G, a high capacity integrated EMI/EMC input voltage filter is fitted as standard on all 3U models. All models integrate the same PSU and backplane electronics.
DC PSUs are equipped with a VICOR military Filter and Attenuator Module (FIAM). This front-end device is fitted prior to the DC/DC converters to provide EMI filtering, inrush current limiting and transient protection.
Front-end FIAM modules are protected against DC reverse polarity. An optional reverse polarity diode may be fitted in series with power connector input pin IN (+).
3U PENTAHEX-HP PSUs incorporate isolated DC/DC converters and oversized hold-up capacitors to ensure proper operation during short power line failures. Outputs are protected against short-circuit, thermal-shutdown etc. PSUs are custom made to match the enclosure mechanics.
The PSU in PENTAHEX-HP models is attached to a heat exchanger panel that provides both conduction and convection cooling. Internal air recirculation dissipates heat generated by the PSU through its panel via thermal conduction to the chassis frame.
Forced air that is drawn through the heat exchangers, passing over the PSU panel external fins & exhausted, removing the majority of heat.
|WIDTH||155 mm||155 mm||155 mm||155 mm|
|HEIGHT||280 mm||280 mm||280 mm||280 mm|
|DEPTH||310 mm||361 mm||412 mm||463 mm|
|WEIGHT||6.2 Kg||7.4 Kg||8.2 Kg||9.0 Kg|
|CGTR COEFF||ΔT/W = 0.071°C||ΔT/W = 0.054°C||ΔT/W = 0.046°C||ΔT/W = 0.040°C|
|HEAT PIPES||4 - ⌀ 8mm||8 - ⌀ 8mm||12 - ⌀ 8mm||16 - ⌀ 8mm|
|PSU OUTPUT||S-575W : +12 VDC @ 42A, +3.3 VDC @ 23A | S-1075W : +12 VDC @ 84A, +3.3 VDC @ 23A|
|PSU V-INPUT||28 VDC ±30%, 48 VDC ±30%, 72 VDC ±30%, 270 VDC ±30%|
|STD BACKPLANE||3U 1” pitch (3, 5, 7 & 9 slot) - MULTIGIG RT 3 - PCIe 16 Gbaud & 100 GBASE-KR4 (25.78125 Gbaud)|
|BOARD FORMAT||CCS: Conduction-cooled slots only ANSI-VITA 48.2 boards|
|INTERNAL FAN||40.5 CFM||54 CFM||67.5 CFM||81 CFM|
|F115-400||200 CFM (Rotron PX3)|
|F200-400||400 CFM (Rotron PX3)|
|CM FRONT PANEL I/O||6 Power Pins (13 Amp) & 382 I/O Pins (5 Amp)|
|MTBF||25° GB 82,000 Hours, 65° AIC 27,000 Hours|
|OPERATING TEMP||-40°C to +85°C Operating Temperature, -55°C to 100°C Storage Temperature|
These highly optimized 3U chassis incorporate all proprietary technologies, features and well established mechanical & electrical solutions developed during the past 20 years.FAC:Flow-through airflow open enclosure.