Remote Sense is provided and will compensate for 1.0V
of line drop. Remote Sense leads are protected against
open, short and reversal.
Remote On/Off (Optional)
The power supply is turned on with a TTL logic ‘1’ (or open)
signal and turned off by a switch closure or TTL logic ‘0’
referenced to (-) sense terminal. Consult the factory for
other options.
Over Voltage Protection
Output #1: 115% of nominal voltage is typical.
The power supply will latch off until AC power is cycled.
Over Current Protection
Automatic recovery upon fault removal.
Transient Response
The peak output voltage excursion will not exceed 2% and
will recover within 1% in 200
µsec
for a 25% step load.
Reverse Voltage Protection
The output is protected to rated load.
Power Fail Signal
Upon AC input voltage removal, the power fail signal drops
to logic zero at least 10msec before loss of DC output.
Upon AC input turn-on, signal remains low until output is in
regulation. Consult the factory for other options.
N+1 Load Share
Output has active load sharing circuitry. Units will load
share within 1% of the Maximum Rated Load.
Over Temperature Protection
Thermal switch turns off power supply if overheating occurs
and automatically restarts.
Safety
UL/CUL Recognized: UL File Number E13164 (1950)
TUV License Number: R9773309 (EN60950) (IEC950)
Cooling
The unit is designed to operate with 30 CFM of airflow.
DC Power Good Signal
The signal is activated by a ±10% loss of regulation Active
low or high; TTL Level; common with (-) sense. Consult the
factory for other options.
Page 2
SX500 10/98 REV B
Output Voltages and Maximum Rated Loads
OUTPUT
I
MAX
21A
18A
14A
10.5A
MODEL NUMBER
SX500-U1A
SX500-U1B
SX500-U1C
SX500-U1D
V
OUT
±24V
±28V
±36V
±48V
I
PK
26A
22A
17A
12.5A
Output Specifications
Parameter
Regulation
Line
Load
Minimum Load
Hold-Up Time
± 0.2%
±0.5%
0.1A
20mSec at Full Load
Limits
Parameter
Voltage Adjustment Range
PARD
Temperature
Operating
Storage
Temperature Coefficient (T
C
)
Conditions
20 MHz bandwidth
Min
Typ
±5
0.5
Max
Units
%
% P-P
0
-20
After half hour warm-up
± 0.02
50
+85
°C
°C
% /°C
SX500 10/98 REV B
Page 3
Mechanical
0.700
0.550
J9
8.500
2.148
0.040
COVER
1.300
3.900
4.850
PIN 1
AIR FLOW
TB2
PIN 1
10.00
6-32 THD
(4x)
0.620
3.190
NOTES:
All measurements are in inches
FAN MOUNTED ON COVER ADDS 1.30”.
COOLING:
The SX500 is designed to operate with 30 CFM airflow.
SHOCK AND VIBRATION:
The SX500 family meets the requirements of MIL STD-810D. (Vibration-Method 514.3 Procedure 1. Shock-Method 516.3 Procedure 1.)
WEIGHT:
Approximately 4 lbs.
Pin Specifications
Terminal Block 1
POS
1
2
3
FUNCTION
Ground
AC Neutral
AC Line
Connector Specifications
Terminal Block 2
POS
1
2
3
4
FUNCTION
+V
+V
-V
-V
PIN
1
2
3
4
5
6
7
8
9
J9 Connector
Molex No. 22-28-1093
FUNCTION
- Sense
+ Sense
Current Share
Remote Inhibit
Power Fail
DC OK
Sync
Signal Ground
N/C
Standard Options are shown, consult factory for other available options.
The information provided herein is believed to be reliable; however, C&D TECHNOLOGIES assumes no responsibility for inaccuracies or omissions. C&D TECHNOLOGIES
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to
change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. C&D TECHNOLOGIES does not authorize
or warrant any C&D TECHNOLOGIES product for use in life support devices/systems or in aircraft control applications.
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