Technical Specifications

48 to 24 VDC Isolated Converter
Model 849HS
Step-Down Sealed DC-DC Converter
Design Features
- Wide Range Input Voltage
- High Efficiency Isolated Design - 94%
- Hi Ingress Rating, IP 67
- Adjustable Output Voltage
- Optional Remote Output Voltage Sensing
- Optional Remote On/Off Switching
- Low/High Input Voltage Cutouts
- Electronically Current Limited
- Thermally Protected
- Low No Load Power Consumption
- I/O Bayonet Quick Connection
MODEL NO.
849HS
NOMINAL INPUT VOLTAGE RANGE 46 to 56 VDC
INPUT CURRENT WITH LOAD AT 30A; 26.0 Vout 19A with input at 48.0 V
< 160 mA over entire input and output ranges
OUTPUT VOLTAGE NOMINAL 26.0 +,- 0.1 VDC (factory adjusted)
OUTPUT VOLTAGE ADJUSTMENT RANGE 23.5 to 27.0 VDC (internally accessible to user)
200 mV (without remote sensing)
<30 mV (with remote sensing)
OUTPUT RIPPLE 50 mV RMS at maximum load (measured at 25C)
POWER SURGE 1000 W
MAXIMUM LOAD CURRENT 30 ADC, for output voltage setting 23.5-27.0 VDC
EFFICIENCY Not less than 94% over entire operating range
HIGH INPUT VOLTAGE SHUTDOWN 61V +,-1V
Knee current limit starting at 110% of maximum current
OVER TEMPERATURE SHUTDOWN Via internal thermostat, self resetting
By conduction through base plate and convection
FUSING Customer accessible by front panel removal
Via 2 pins on the output connector
usage is optional (see user manual)
OPERATING HUMIDITY 100% non condensing
MOUNTING SLOT CENTERS (in./cm.) 10.0 x 7.3 / 25.4 x 18.5
HOUSING MATERIAL All Aluminum
WEIGHT, (lb./kg.) 15 /6.8
NOTE: Specifications are subject to change without notice. Rev 03/06/2020
ISOLATION
GENERAL
INPUT
CONNECTIONS
OUTPUT LOAD REGULATION
REMOTE SENSE
REMOTE TURN ON
PROTECTION
OUTPUT
MAXIMUM INPUT VOLTAGE RANGE
INGRESS RATING
DIMENSIONS, (in./cm.) (L x W x H)
MAXIMUM CONTINUOUS OUTPUT POWER
LOW INPUT VOLTAGE SHUTDOWN
COOLING
INPUT/ OUTPUT CONNECTION
40 to 61 VDC
INPUT CURRENT AT NO LOAD
OUTPUT VOLTAGE REGULATION < 0.2% with input excursions from 46-56 VDC
15.5 x 8.0 x 2.9 / 39.4 x 20.3 x 7.4
IP 67
800 W
40V +,- 1V
Via 9 pin Bayonet connector (see owner's manual)
Via pin H jumpered to -ve Pin I on input connector,
may be disabled via internal jumper
Input/Output-1800V, Input/Housing-2500V
OPERATING TEMPERATURE RANGE -40C to 70C, 100% loading
OVERLOAD SHUTDOWN
SEC America Corp.
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