| DC Input |
36-72 Vdc |
| Efficiency |
75% typical |
| Fail # Signal |
TTL compatible signal. Signal goes low under
the following conditions: |
| |
Any of 4 outputs fail |
| |
An overtemperature shutdown |
| |
An overvoltage shutdown |
| Output |
|
| Line and Load Regulations |
+/-2% over input range and 0 to 100% load
change |
| Ripple & Noise |
1% p-p or 50 mV, whichever is greater |
| |
measured at mating connector with 20 uF |
| Remote Sense |
open sense lead protection |
| Temperature Coefficient |
(Outputs #1 and 2): 0.03% per degree centigrade |
| Stability |
0.1% over 8 hours after 30 minutes warm-up |
| Transient Response |
(outputs #1 and 2): |
| |
Output voltage returns to within 1% in less
than 1 ms for a 50% load change. |
| |
Peak transient does not exceed 5% |
| Overvoltage Protection |
(outputs #1 and 2): |
| |
Protects load against power supply induced
overvoltage |
| |
Trip-point is factory set so that output voltage
cannot exceed 136% of nominal |
| |
Input power must be recycled to reset. |
| Overload Protection |
All outputs are protected against overload
and short circuit |
| |
automatic recovery upon removal of fault |
| DEG # Signal |
TTL compatible signal. Signal goes low 20
degrees C before an overtemperature shutdown |
| Fail LED |
Amber LED illuminates upon a failure condition
as per series specifications |
| Status LED |
Green LED illuminates with no presence of
any failure condition |
| Remote Enable |
Contact closure to the negative sense line
or a TTL level "0" turns off dc outputs |
| Redundancy |
Built-in ORing diodes, slope program current
sharing on all outputs, and self aligning connector provide
hot swap and N+1 capabilities. |
| |
Current sharing remains within 10% of the
unit's full output rating while units are in thermal equalibrium |
| Reverse Voltage |
protected against reverse voltage up to supply
current rating, except for reverse voltage on output #4 |
| Environmental |
|
| Cooling |
15 cfm, 225 lfm airflow required for cooling |
| Output Isolation |
Isolated from ground 50 Vdc (leakage current <20
uA) |
| Thermal Protection |
Shuts down power supply if overheated |
| |
Automatic recovery |
| Temperature Range |
0 to 40 degrees centigrade at full ratings |
| |
derate 2.5% per degree centigrade from 40
degrees to 70 degrees centigrade |
| |
unit will start up at -20 degrees centigrade |
| MTBF |
421,408 hours |
| Miscellaneous |
|
| Safety Agency Approvals |
Models are approved to UL1950; CSA 22.2 #234 |
| |
IEC 950 and TUV EN60950, Class 1 SELV., CE
72/23/EEC/93/68EEC (low voltage directive) |
| Warranty |
Two year guarantee includes labor and parts |
| |
Guarantee applies to operation at full published
specifications at the end of 2 years |
| Options |
|
| Low Leakage |
"L" option: Leakage current less
than 0.5 mA per unit. Will require additional filtering for
compliance to EMI specifications. |
| Mechanical Dimensions |
3U x 8HP W, 160 mm board depth |
| |
Utilizes a 47-pin modular connector in accorgance
with PICMG Power Interface Specification 2.11 |
