NX301 3/98 REV B
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DESCRIPTION
The NX301 is a compact 300 watt Power Factor Corrected,
multiple output power supply. All outputs are fully isolated
and regulated. Active current sharing circuitry, together with
control functions and alarm options, simplifies N+1 and
redundant applications. Fan and disk drive applications are
handled by the peak current ratings of the auxiliary outputs.
3400 E Britannia Drive
Tucson, Arizona 85706
Phone: 520.295.4100
Fax: 520.770.9369
Internet: http://www.cdpowerelectronics.com
FEATURES
Active Power Factor Correction
Fully Isolated Outputs
Low Profile: 9" x 4.85" x 2.00"
One, Two, Three and Four Output Models
N+1 Current Sharing
FCC/VDE Class B EMI Filter Standard
Optional Fan Mounted On Cover
300 W
ATT
AC/DC P
OWER
S
UPPLY
NX301
Product Data Sheet
AGENCY APPROVALS
NX301 3/98 REV B
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Input Specifications
Remote Sense
Remote Sense is provided on Output #1 and will
compensate for 0.7V of line drop. Remote Sense leads
are protected against open, short and reversal.
Remote On/Off
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: 6.5V 0.5 V
DC.
The power supply will latch off until AC power is cycled.
Over Current Protection
Individual current limit on all outputs. Automatic recovery
upon fault removal.
Transient Response
The peak output voltage excursion will not exceed 2% and
will recover within 1% in 200
sec for a 25% load step
change.
Output Isolation
All outputs are fully isolated.
Power Fail Signal
Upon AC input voltage removal, the power fail signal drops
to logic zero at least 5msec before loss of DC output. On
AC input turn-on, signal remains low until outputs are in
regulation. Consult the factory for other options.
N + 1 Load Share
Output #1 has active load sharing circuitry. Units will load
share within 1.5% of Maximum Rated Load.
Over Temperature Protection
Thermal switch turns off power supply if overheating occurs
and automatically restarts.
Safety
UL Recognized: UL File Number E14675 (1950 & 1012)
CSA Certified: CSA File Number LR 9070-154C
(C22.2 No. 234-M90, Level 6)
TUV License Number: R9576031 (EN60950) (IEC950)
Cooling
The unit is designed to operate with 30 CFM of airflow.
Parameter
Conditions
Min
Typ
Max
Units
Operating Range
47-63 Hz
90
264
V
AC
Inrush Current Limiting
120V
AC
, cold start
35
A
PK
240V
AC
, cold start
70
A
PK
Efficiency
120V
120V, full load
70
%
240V
240V, full load
75
%
Power Factor Correction (PFC)
0.99
Meets IEC 1000-4-7/EN61000-3-2 (formerly IEC 555-2)
NX301 3/98 REV B
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Output Voltages and Maximum Rated Loads
OUTPUT #1
OUTPUT #2
OUTPUT #3
OUTPUT #4
MODEL NUMBER
V
OUT
I
MAX
V
NOM
I
MAX
/I
PK
V
NOM
I
MAX
/I
PK
V
NOM
I
MAX
NX301-U3A
5V
45A
12V
8A/10A
12V
8A/10A
-
-
NX301-U3B
5V
45A
15V
8A/10A
15V
8A/10A
-
-
NX301-U4C
5V
45A
12V
8A/10A
12V
8A/10A
5V
3.0A
NX301-U4D
5V
45A
12V
8A/10A
12V
8A/10A
24V
1.5A
NX301-U4E
5V
45A
12V
8A/10A
12V
8A/10A
12V
3.0A
NX301-U4F
5V
45A
15V
8A/10A
15V
8A/10A
5V
3.0A
NX301-U4G
5V
45A
15V
8A/10A
15V
8A/10A
24V
1.5A
NX301-U4H
5V
45A
15V
8A/10A
15V
8A/10A
12V
3.0A
NX301-U3N
5
45A
5
8A
12
8A
NX301-U4P
5
45A
12
8A
15
8A
12
3.0A
Note: Peak current ratings are for 10sec maximum. Total power not to exceed 300 watts.
Parameter
Conditions
Min
Typ
Max
Units
Voltage Adustment Range
5
%
PARD
20 MHz bandwidth
1
% P-P
Temperature
Operating
0
50
C
Derates to half power
70
C
Storage
-20
+85
C
Temperature Coefficient (T
C
)
After half hour warm-up
0.02
%/C
Output Specifications
Parameter
Limits
Regulation
Line
0.03%
Load
0.25%
Cross
0.05%
Minimum Load
Output #1
3.0A
Auxiliary Outputs
0.1A
Hold-Up Time
25mSec at Full Load
NX301 3/98 REV B
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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.
Mechanical
8.50
0.25
0.55
3.90
9.00
4.85
1.95
0.040
COVER
OUTPUT NO. 1
TB2
J9
5V RETURN
5V
6-32 THD 4 PLC'S
Maximum depth of mounting
screws is 0.156 inches
TB1
NOTES:
All measurements are in inches
FAN MOUNTED ON COVER ADDS 1.30".
COOLING: The NX301 is designed to operate with 30 CM airflow.
SHOCK AND VIBRATION: The NX301 meets the requirements of MIL STD-810D. (Vibration-Method 514.3 Procedure I; Shock-Method 516.3 Procedure I).
WEIGHT: Approximately 3 lbs.
TOP VIEW
Terminal Block 1
Terminal Block 2
POS
FUNCTION
POS
FUNCTION
1
AC Line
1
-V2
2
AC Neutral
2
+V2
3
Ground
3
-V3
4
+V3
5
-V4
6
+V4
J9 Connector
J9 Connector
PIN
FUNCTION
Molex No.
1
+ Sense
Connector 22-28-1090
2
- Sense
3
N/C
4
N/C
5
Start Up Sync.
6
Power Fail
7
Remote Inhibit
8
Current Share
9
Cntl Signal Rtn
Standard Options are shown, consult factory for other available options.
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