3U ATR SEF-HP Description
Sealed, 1" pitch, dry-air 3U chassis that incorporates extended cooling fins, 18 super conducting heat pipes & air re-circulation fans inside. This Zero maintenance ATR is ideal for medium wattage applications where ambient air is laden with contaminants.
Heat generated within the enclosure is dissipated by a combination of conduction, radiation and free-air convection through the chassis metalwork & double wall extended fins to the ambient environment. 18 integrated heat pipes provide fast passage for heat to exit the internal card-cage. Internal air recirculation fans ensure constant airflow across payloadmodules.
CM-ATR-3U/SEF-18HP
The 3U SEF-18HP chassis is available in a 5 slot version only (½ ATR), supporting VME, cPCI & VPX backplanes. A total PSU power of up to 825 watts may be installed. Custom modifications can be designed upon customer request.
Internal layout is divided into 3 independent metallic partitions. I/O section at the front, card-cage in the middle & PSU section at the rear. This improves EMI/EMC performance & reduces PSU noise on system electronics.
Attention to I/O flexibility and easy board integration; allowing the intermixing of wedgelock IEEE P1101.2 conduction cooled boards, IEC-297 air cooled modules, Compact PCI 1101.1/IEC/118/ CD and VPX VITA 46.0/.1/.10/.3/.4/.7 air cooled boards.
3U SEF-18HP Performance
The 3U SEF-18HP chassis is suitable for medium wattage sealed applications that demand high passive cooling capabilities. This silent, fanless model is competitive vs forced air ATRs & ideal for submarine, proximity to operator, deploy & forget applications.
SEF-HP - Chassis Global Thermal Resistance (CGTR) coefficient:
ΔT/W = 0.214°C (½ ATR).
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-461E & MIL-STD-810F.
3U Backplanes
CM 3U backplanes are low noise, full military VMEbus, VPX or cPCI-S compatible and provide fully standard bus slot & signal daisy-chain functionalities. Bus slots are tailored for 1 inch pitch standard & deliver full compatibility with 0.8 inch pitch 3U modules.
CM 3U enclosures incorporate a versatile universal ‘MCS’ slot mixed card-cage that accepts all off-the-shelf Conduction Cooled and Air Cooled 3U modules.
An alternative ‘CCS’ conduction cooled card-cage is available for conduction-cooled boards only, whereby improving thermal performance.
All 3U backplanes install specific TTL logic circuitry for driving up to 8 front panel user LED indicators.
All 3U backplanes integrate a Temperature Supervisory Unit (TSU) with panel LED (over/under temperature) that controls Power Supply & Fan operation. Remote optoisolated control switches for ‘Battle-short’ & chassis PSU ‘on/standby’ are fitted as standard.
- VME64x backplanes. Conduction-cooled IEEE-1101.2 & air-cooled IEC-297/IEEE.1101.1 modules.
- VPX backplanes conform to VITA 46 / 65 / 66 / 67 (≥10 GHz Gen 3).
- Compact PCI Serial backplanes according to PICMG CPCI-S.0 R2.0 2015 / IEEE 1101 standards.
CM 3U military backplanes allow unlimited pin I/O wiring capability. Flexible top & bottom wiring integration is facilitated by a standard 25mm 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, VME, cPCI or I/O connectors.
All 3U models integrate the same backplane electronics for easy switch-overs, retrofits or replacement parts.
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3U SEF-18HP Power Supplies
3U SEF-18HP chassis PSUs support a wide variety of AC/DC input voltages (MIL-STD-704 & MIL-STD-1275) and customer defined DC power output combinations up to Watts. Available in 6 different versions (A-B-C-...) to suit the demand per DC Line of standard COTS open busses.
CM-PS-3U/SEF-18HP
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.
Single-phase AC PSUs are fitted with a VICOR military Filter and Autoranging Rectifier Module (FARM) to provided EMI filtering, autoranging line rectification and inrush current limiting to meet MIL-STD-461E category A1b specifications for Electromagnetic Compatibility.
200VAC 3-Phase PSU versions additionally incorporate AC/DC rectifier stage prior to the VICOR FIAM front-end modules.
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 SEF-18HP 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 SEF-18HP 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.
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3U ATR SEF-18HP Features
Fully Sealed Chassis
3U SEF-18HP chassis are fully sealed with no exterior exhaust fans, slient, requiring Zero maintence & replacement of parts.
LED Front Panel Indicators
Up to 8 front panel LED indicators for chassis monitoring; power on/off status, system board failure, input voltage, temp., etc.
Front Panel
Custom layout with client logo, connectors & silk-screening or a general purpose panel with MIL-C-38999 connectors is supplied.
Product Flexibility
Removable Extended Fin Top Cover fitted as standard for superior cooling. A low profile cover is available but with reduced dissipation capacity.
Chassis Metalwork
Precision machined aeronautical aluminum with MIL-DTL-5541F chromate coating. All panels & joints incorporate EMI gaskets.
Mounting Tray
Low profile with quick release system offers easy insertion/removal capability, weight optimized with minimized dimensions.
EMI/EMC Filter
High capacity integrated EMI/EMC input voltage filter is fitted as standard on all 3U models to comply with MIL-STD-461F.
Air Recirculation
All 3U chassis incorporate a low profile internal fan pack to recirculate air, improving card-cage, PSU & module heat dissipation.
Sealed with Extended Fins + 18 Heat Pipes
Fitted with extended double finned side walls and extended fin top cover + 18 integrated card-cage heat pipes with exterior airflow tunnels.Capabilities
- Contaminant-free enclosure
- Accepts Conduction-cooled 3U Modules only
- Flexible Bottom I/O wiring
- In-line EMI/EMC MIL-STD-461G Filter
- Up to 140W* Total Payload Power (30ºC Delta-T)
- 18 Integrated Heat Pipes
- Integrated Chassis Supervisory System (CSS)
- >10ºC less payload ΔT with respect to S series
- Maintenance free operation
- Front panel user indicators
- Integrated Rear fan guards
- Independent Fan & Power Supply input voltage
- Stand alone low weight ATR
- Internal card-cage airflow recirculation
- Military Operating Temperature (-40°C | +85°C)
- Silent, no noise per Grade A12, MIL-STD-740-1 / MIL-STD-1474 (54dB A-weighted)
- Customizable to specific requirements
- Low Profile Mounting Tray with quick release
- Manufactured with US MIL components
3U ATR SEF-18HP Specifications
CM-ATR-3U/SEF-18HP |
|
| WIDTH | 214 mm |
| HEIGHT | 230 mm |
| DEPTH | 266 mm |
| WEIGHT | 8.0 Kg |
| CGTR COEFF | ΔT/W = 0.214°C |
| HEAT PIPES | SEF-18HP Models Integrate 18 Heat Pipes - ⌀ 8mm |
| MAX PSU PWR | 825 Watts (28 VDC 625 Watts) |
| PSU V-INPUT | 28 VDC ±30%, 48 VDC ±30%, 72 VDC ±30%, 270 VDC ±30%, Autorange 90-132 VAC RMS & 180-264 VAC RMS 47-880 Hz, 3-Phase 200 VAC ±30% 47-880 Hz |
| STD BACKPLANE | 3U (1" Pitch), 5-SLOT VME64X or cPCI or VPX |
| BOARD FORMAT | CCS: Conduction-cooled slots only or MCS: Slot-by-slot user configured card-cage allows intermixing conduction-cooled ANSI-VITA 48.2 & air-cooled ANSI-VITA 48.1 boards |
| INTERNAL FAN | 4 x 13.5 CFM (54 CFM) |
| FRONT PANEL AREA | 125 mm x 140 mm |
| 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 |
| MOUNTING TRAY | CM-TR-3U/SEF-18HP |
3U ATR COTS MODELS
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.S:Standard sealed contaminant-free enclosure.
SEF-18HP:Sealed with Extended Fins + 18 Heat Pipes contaminant-free enclosure.
HES:Sealed contaminant-free enclosure fitted with 4 integrated heat exchangers as standard.
HES-FBL:Sealed, conventional front-to-back format contaminant-free enclosure fitted with 4 integrated heat exchangers as standard.
HES-FBL-HP:Sealed, conventional front-to-back format contaminant-free enclosure fitted with 4 integrated heat exchangers and heat pipes as standard.
3U ATR MIL Certificates
3U ATR Ordering Information
CM-ATR-3U /CT /B /I /W /FP /TC /BC /CS /C
/CT Enclosure Cooling Technique- CM-ATR-3U/SEF-18HP: Sealed with Extended Fins + 18 Heat Pipes.
- VME64x: Military VME64x Backplane (5 Slot 3U 1" Pitch).
- cPCI-S: Military Compact PCI Serial Backplane (5 Slot 3U 1" Pitch).
- VPX: VITA 46 Military VPX Backplane (5 Slot 3U 1" Pitch).
- VPX-6: VITA 46 Military VPX Backplane (6 Slot 3U 0.85" Pitch).
- 28VDC: 28 VDC Input.
- 48VDC: 48 VDC Input.
- 72VDC: 72 VDC Input.
- 270VDC: 270 VDC Input.
- 90-264VAC: Autorange 90-264 VAC @ 47-880 Hz Input.
- 200VAC-3Ph: 200 VAC 3 Phase @ 47-880 Hz Input.
- A-475W: 28 VDC* (+5 VDC @ 40A, +3.3 VDC @ 22A, ±12 VDC @ 8A).
- A-575W: All PSUs* (+5 VDC @ 40A, +3.3 VDC @ 22A, ±12 VDC @ 12A).
- A-675W: 28 VDC* (+5 VDC @80A, +3.3 VDC @22A, ±12 VDC @ 8A).
- A-775W: All PSUs* (+5 VDC @80A, +3.3 VDC @22A, ±12 VDC @12A).
- B-450W: 28 VDC* (+5 VDC @ 20A, +3.3 VDC @ 45A, ±12 VDC @ 8A).
- B-550W: All PSUs* (+5 VDC @ 20A, +3.3 VDC @ 45A, ±12 VDC @ 12A).
- B-564W: 28 VDC* (+5 VDC @20A, +3.3 VDC @80A, ±12 VDC @ 8A).
- B-664W: All PSUs* (+5 VDC @20A, +3.3 VDC @80A, ±12 VDC @12A).
- C-475W: 28 VDC* (+5 VDC @ 20A, +3.3 VDC @ 22A, +12 VDC @ 16A, -12 VDC @ 8A).
- C-575W: All PSUs* (+5 VDC @20A, +3.3 VDC @22A, +12 VDC @21A, -12 VDC @12A).
- C-775W: 28 VDC* (+5 VDC @20A, +3.3 VDC @22A, +12 VDC @41A, -12 VDC @8A).
- C-825W: All PSUs* (+5 VDC @20A, +3.3 VDC @22A, +12 VDC @41A, -12 VDC @12A).
- D-550W: 28 VDC* (+5 VDC @40A, +3.3 VDC @45A, ±12 VDC @8A).
- D-650W: All PSUs* (+5 VDC @40A, +3.3 VDC @45A, ±12 VDC @12A).
- E-550W: 28 VDC* (+5 VDC @20A, +3.3 VDC @45A, +12 VDC @16A, -12 VDC @8A).
- E-650W: All PSUs* (+5 VDC @20A, +3.3 VDC @45A, +12 VDC @21A, -12 VDC @12A).
- F-575W: 28 VDC* (+5 VDC @40A, +3.3 VDC @22A, +12 VDC @16A, -12 VDC @8A).
- F-675W: All PSUs* (+5 VDC @40A, +3.3 VDC @22A, +12 VDC @21A, -12 VDC @12A).
- S-575W: SOSA (+3.3 VDC @22A, +12 VDC @41A).
28 VDC* = 28 VDC input only
- CMP: Standard CM front panel fitted with MIL-C-38999 connectors.
- UDP: User defined front panel layout (requires customer drawing).
- STC: Standard Top Cover.
- FTC: Finned Top Cover. Wiring clearance 13mm. (Fitted as standard).
- HTC: High-profile Top Cover. Wiring clearance 35mm.
- HETC: Heat Exchanger Top Cover. No Wiring clearance (Fitted as standard).
- SBC: Standard Bottom Cover. Wiring clearance below backplane 24mm. (Fitted as standard)
- HBC: High-profile Bottom Cover. Wiring clearance below backplane 49mm.
- MCS: Universal Card-cage Slots (Mixed Conduction-cooled & Air-cooled Boards).
- CCS: Conduction cooled Card-cage Slots (Conduction-cooled Boards Only).
- B: Black, G: Navy Grey, E: Army Dark Earth, W: White, R: Red, PT: Platinum, YW: Yellow, GN: Green, BLU: Dark Blue, CR: Chromate MIL-C-5541 or O: Other (user defined).
CM-ATR-3U/SEF-18HP/VPX/90-264VAC/C-575W/UDP/STC/SBC/MCS/R
- 5 slot, 3U Avionics Enclosure.
- Sealed with Extended Fins on top cover & sidewalls + 18 integtrated Heat Pipes.
- 5 slot, 3U VPX backplane.
- 115VAC @ 400 Hz input power supply.
- C-575W Power Supply (+5VDC @ 20A, 3.3VDC @ 22A, +12VDC @ 21A, -12VDC @ 12A).
- User defined front panel layout (requires customer drawing).
- Heat Exchanger Top Cover. Wiring clearance 13mm.
- Standard Bottom Cover. Wiring clearance below backplane 25mm.
- Universal Card-cage Slots (Mixed Conduction-cooled & Air-cooled Boards).
- Enclosure color is red.