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SEC-1235 / SEC-1235M are Switched Mode Power Supplies (SMPS) which
convert 120 VAC, 60 Hz (or 230 V, 50 / 60 Hz *) AC power to regulated 13.8 V DC
power based on Pulse Width Modulation (PWM) control.
*Note:
The units are factory preset to operate from an input voltage of 120
VAC, 60 Hz. These may be set to operate from an input voltage of 230 VAC, 50
/ 60 Hz. by changing internal settings as described below under "OPERATION
FROM AC INPUT OF 230 VAC"
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Based on switched mode technology and PWM control
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Compact and light weight
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High efficiency and less heat dissipation
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SEC-1235M comes with voltmeter and ammeter
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Protected against short circuit, over load and over temperature
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Cooling by temperature controlled fan
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UL safety certified and listed under UL Standard UL60950-1 for
Information Technology Equipment Power Supply
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Complies with FCC Part 15(B) for limits on EMI for Class B Digital
Devices
OPERATION FROM AC INPUT VOLTAGE OF 230 VAC
These units have been preset to operate from an input voltage of 120 VAC, 60
Hz. The units can be set to operate from an input voltage of 230 VAC, 60 Hz. by
changing the position of an internal jumper. The procedure for conversion to
input voltage of 230 VAC, 50 Hz. is as follows:
• Switch off the unit and unplug the power cord from the AC outlet
• Remove the top cover
• For 120 VAC operation (pre-set condition), points "D" and "E" on the
printed circuit board (PCB) have been connected (shorted) with a flexible wire
jumper. To convert to 230 VAC input, disconnect the quick disconnect connector
at point "D" by pulling it upwards. Tape this end with an insulation tape and use
a cable tie to tie it securely to the wire harness running above
• The fuse on the AC side for the preset input voltage of 120 VAC is
rated at
250 V, 8 A. For 230 VAC operation, the fuse has to be rated at 250 V,
4A. Replace the existing 8 A fuse with a 4 A fuse. See under "SPECIFICATIONS"
on page 11 for details on the 4 A fuse.
•The detachable power cord that is provided has an "IEC 320-13"
female connector on one end that will mate with the "IEC 320-C14" male AC
inlet connector on the power supply. The other end of this power cord has a 120
VAC NEMA5-15P plug meant for connection to the 120 VAC, NEMA5-15R outlet.
For operation on 230 VAC, 50 Hz, a different detachable power cord will have to
be used. Use an appropriate power cord that has an "IEC 320-13" female
connector on one end (for connection to the "IEC 320-C14" AC inlet connector
on the power supply) and a 230 VAC plug on the other end corresponding to the
230 VAC outlet. Please ensure that the new 230 VAC power cord uses two pole,
3 wire grounding configuration (this will ensure proper earth grounding).
DESCRIPTION
FEATURES
3.
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