Switch Mode Power Supplies

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EMT 12500 Series

125W AC/DC Converter

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Compact (100x100x68mm)

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Wide Input Range

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12,15, 24V

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Parallel able

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Easy Mounting

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Solid ALU Housing

 

 

SPECIFICATIONS

GENERAL

INPUT VOLTAGE 85 - 265 VAC

P/S CAPACITY

< 1,2 nF PRIM/SEC
120 - 375 VDC ISOLATION PRIM/SEC 3750 V
INPUT POWER < 110VA CREEPAGE 8 mm
FILTER HIGH EFFICIENCY COMMON MODE EMC EN55022 - VDE 0871
SAFETY IEC 950, EN 60950
FUSE T 2,0 A PREFUSING MAX 30 A
INRUSH < 20 A DERATING

0 - 50 C NONE

INPUT FREQ. 45 - 65 Hz MTBF > 450.000 Hours
PROTECTION 275 VAC VARISTOR OUTLINE

100 x100 x 68 mm

EFFICIENCY 79 - 86 % WEIGHT APPR. 525 g
FREQUENCY Appr. 70 Khz OPERATING 0 - 55 C See FIG. 2
HOLD-UP TIME > 20 mSec. STORAGE    -40 - +85 C

 

OUTPUT

TYPE: EMT12512 EMT 12524 EMT 12548
VOLTAGE +12 VDC +24 VDC +48 VDC
POWER 100 W MAX 125 W MAX 125 W MAX
CURRENT LIMIT 8,0 A See Curve FIG.3 5,2 A See Curve FIG.3 2,5 A See Curve FIG.3
ADJUST RANGE 11,8 - 13,8 VDC 23,5 - 27,6 VDC 47,0 - 55,2 VDC
RIPPLE < 1,0 % < 0,8 % < 0,8 %
LOAD REG. < 1,5 % < 1,0 % < 0,8 %
LINE REG. < 0,1 % < 0,1 % < 0,1 %
PARALLEL OPR. 80 % POWER SHARE 90 % POWER SHARE 90 % POWER SHARE
FACTORY ADJUST 12,10 VDC +/-0,01V @ 0 A 24,10 VDC +/-0,01V @ 0 A 48,10 VDC   +/-0,01V @ 0 A

 

Battery Charging:
By charging Lead Acid Batteries, adjust unit to shown charge voltage with no load connected.
This will keep your Battery charged to 90 - 96% under normal temp. conditions, in normal standby operation.

Or contact your local Battery Supplier, for technical information around Charge Voltage in Standby Operation and readjust unit to desired voltage, with no Load.

CHARGE VOLTAGES

Batt Volts
12V 13,8 V
24V 27,6 V
48V 55,2V
Parallel Operation:
When connecting in parallel, use the same wire diameter/length from unit to common tie point, to best parallel performance.

Units are factory adjusted, to above voltages, to optain best performance in parallel operation, - - if this adjustment is changed, readjust unit's to wanted Output voltage (+/- 10mV) with no Load for each unit, before connecting in parallel.

Current Limit:

Looking at Fig. 4, a typical Current Limit is shown together with Toggle Mode point.

This point is at 40 - 60 % of rated Output Voltage on all units.

When unit reaches its Toggle Mode point, unit will stop, and with its automatically restart within seconds, unit will in this mode stand a constant short with no damage or internal power losses.

 

 
Dimensions: