AC/DC Power Supplies

Schaefer C4800A SERIES AC/DC Power Supply

The Schaefer C4800A Series is a high-power AC/DC power supply for industrial applications, delivering output power from 4kW (for 110Vac input models) to 5kW (for 230Vac and 3-Phase input models). This series supports a wide range of DC output voltages from 12Vdc to 400Vdc. While the C4800A Series is naturally convection cooled, it is recommended to include an external fan for optimal cooling in high-power operations. In applications requiring short peak power, it may be possible to operate without the fan. The C4800A Series offers mounting options for wall mounting or installation within a 19" rack using a separate 6U subrack. With options for monitoring, parallel/redundant operation, and conformal coating, the C4800A Series is ideal for demanding environments such as Railway, Utilities, Mining, and Heavy Industry.

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Schaefer C4800A SERIES AC/DC Power Supply

Features

  • Industrial Grade AC/DC Power Supply
  • Output Power: 4kW - 5kW
  • AC Input: 1-Phase and 3-Phase Models
  • Wide Range of DC outputs:12, 15, 24, 28, 48, 60, 110, 220
  • Flexible mounting options via Wall or Euro Cassette (19" rackmount)
  • Natural Convection Cooling (increased airflow via external fan recommended for high power applications)
Specifications
INPUT
Input voltage 1ph 115/230Vac
3ph 200/400/480Vac
See selection table
Units will turn off with under or over input voltage.
No-load input power 3-6W model (series dependant)
Inrush current AC input limited by thermistor
Switch on time 1-2 seconds.
Input Options Option au: Autoranging for 115/230Vac input
Option pr: Power OK via relay contacts
OUTPUT
Output voltage Voltage: 12 - 400Vdc
Output current See selection table.
Ripple & noise 1% + 30mVpp
Line regulation 0.1% (±10%)
Load regulation 0.2% typical, load step 10-90%
Load transient 6% typical, load step 10-90%
Response time 2-3ms typical ±1%
Temperature coefficient 0.02% per °C typical.
Holdup time 10mS at 220VAC typical
Turn on rise time 100mS typical (soft start)
Remote sensing Standard for all series
Efficiency 80%-92% typical
Output Options Option dd: Decoupling Diode for redundant / parallel operation Option cs: Active Current Sharing Option h: Remote on/off (inhibit) Option dr: DC OK via relay contacts
PROTECTION
Overload protection Current limited at 105%–110% of full load.
Overvoltage protection OVP switches off module with automatic return to operation
Protection Options Option i: Inrush Current Limiting
Option sd: Reverse polarity protection for DC input by Series Diode
MTBF 100Khrs to 140Khrs at 40°C acc. to MIL-HDBK-217E (notice 1)
ENVIRONMENTAL
Operating temperature -20°C to +75°C
(optional -40 to 75C)
Load derating Derate 2.5% per °C, from +55°C to 75°C
Cooling H: Heatsink - natural convection
F: Fan - increased airflow recommended
TF: Temperature controlled Fan included See selection table
Environment Options Option c: Extended temperature range to -40°C
Storage temperature -40°C to +85°C
Humidity Up to 95% RH, non-condensing
STANDARDS
EMI standards acc. to EN61000-6-4 class A, optionally class B
Immunity standards acc. to EN61000-6-2
C-Tick AS/NZS CISPR11: 2002 Group1 Class A
Safety / Construction acc. to EN60950-1 / EN50178
Protection category IP20 acc. to EN60529 NEMA or others on request
MECHANICAL
Mounting See technical illustrations
Eurocassette, pluggable module for 19" subrack
Option w: Wall Mounting
Option cha: Chassis Mounting
Dimensions See Technical illustration
Connector H15 acc. to DIN 41612 H15 and high current connectors for I > 50A, or terminals / bolts / bars
Mechanical Options Option ms: Increased Mechanical Strength
Option t: Tropical protection
19" Rack Mounting Options Subrack Height 3U, 5U, 6U
Wiring, Front Panels
Accessories: Fuses, MCBs, Mains on/off switch
Contact Powerbox for rack configuration
Selection Table
INPUT
115VAC
± 20%		 OUTPUT AMPS INPUT
230VAC
+15% - 20%		 INPUT
3X200VAC
+15% - 20%		 INPUT
3X400VAC
+15% - 20%		 INPUT
3X480VAC
+15% - 20%		 OUTPUT AMPS COOLING OUTPUT VOLTAGE VOLTAGE ADJUSTMENT
C4862 260 C4882 C4862V C4882V C4892V 260 F 12 11-13
C4864 220 C4883 C4863V C4883V C4893V 220 F 15 14-16
C4865 150 C4884 C4864V C4884V C4894V 160 F 24 23-26
C4869 130 C4885 C4865V C4885V C4895V 140 F 28 26-30
C4866 72 C4889 C4869V C4889V C4899V 80 F 48 45 - 55
C4867 60 C4886 C4866V C4886V C4896V 66 F 60 58 - 68
C4867J 30 C4887 C4867V C4887V C4897V 40 F 110 100-130
C4868 16 C4887J C4867VJ C4887VJ C4897VJ 20 F 200 190-200
C4868J 16 C4888 C4868V C4888V C4898V 20 F 220 200-250
Cooling H: Heatsink - natural convection
F: Fan - increased airflow recommended
TF: Temperature controlled Fan included
See selection table
Model configuration options Add the options to the model number, eg. C4862-dd-dr-cs Options for Input, Output, Environmental and Mechanical follow.
19" Rack Mounting Options Subrack Height 3U, 5U, 6U
Wiring, Front Panels
Accessories: Fuses, MCBs, Mains on/off switch
Contact Powerbox for rack configuration
INPUT OPTIONS
Option “i” (inrush current limiting): A thermistor is connected in series with the input lines which changes its resistance from high to low when it gets hot. It does not reduce the current surge if the input power is interrupted for a short period of time not allowing the thermistor to cool down. Thermistors are fitted as standard to all mains input models except for 1-phase input of models > 2.5kW. Thermistors are available up to 45A. For higher input current an electronic inrush current limitation can be offered.
Option “ie” electronic inrush current limiting An electronic circuit limits the inrush current.
Option “sd” (series diode): A series diode protects the module against input voltage of wrong polarity (additional power losses).
Option “ad” (anti-parallel diode): To avoid the power losses of a series diode a diode is provided with opposite polarity in parallel to the input blowing an internal or external fuse if the module is connected to a supply with wrong polarity.
Option “au” (auto-ranging) For standard dual AC input models the range of 115/230Vac is to be selected by connecting the input line to different pins on the connector. With auto-ranging the unit senses the input voltage and provides automatically the correct connection.
Option “p” (power fail): A signal (logic or relay) is given if the input voltage (AC or DC) drops below the specified limit. In AC input units we sense the rectified input voltage so that a power fail alarm will not be triggered if at light loads mains power returns before the input capacitors are substantially discharged.
Option “r” (relay): A relay instead of a logic signal is provided for failure indication.
output options
Option “dd” (decoupling diode): For redundant operation the outputs of two or more units are paralleled behind de-coupling diodes so that an internal fault of one module does not affect the operation of the others. These diodes cause power losses.
Option “cs” (active current sharing): An additional control circuit provides active current sharing via an interconnecting wire between converters that operate in parallel. Active current sharing should be used for multi-output units operating in parallel.
Option “csi” (current sharing interrupt): Option "csi" will effect the removal of the "cs" signal. Should there be an instance where a unit is not supplying the load, then the effect of its "cs" signal is removed, and the load voltage is unaffected by this condition.
Option “h1” (inhibit): A terminal connected to the negative input line also shuts off the converter. This can also be used in conjunction with a thermal trip which shuts the unit down.
Option “h2” (inhibit): Operation of the unit is inhibited if a voltage signal (5V/10mA) is applied in reference to the negative line of the (main) output.
Option “rco” (reducing current limiting at over temperature) A circuit reduces the current limiting level at higher temperature (to be specified).
Option “d” (DC-ok, one output): A logic signal is given if the output voltage (main output in multi-output systems) is below the specified limit.
Option “m” (DC-ok, all outputs): In multi-output systems a logic signal is provided if the voltage of any output is below the specified limit.
Option “ac” (AC ok) A logic signal connected to relay contacts is given if the output voltage of an inverter is below the specified limit.
Option "y" (sys-reset): This logic signal is a combination of power fail and DC-ok as specified for VME systems.
Option "r" (relay): A relay instead of a logic signal is provided for failure indication.
environmental options
Option "t" (tropical protection):The unit is given additional protection by a heavy coat of varnish on the printed circuit board(s) and components.
Option "c" (extended temperature range):The circuit is designed and tested for operation at an ambient temperature as low as –40 °C.
Option "ms" (increased mechanical strength): Screws are secured by Locktite and heavy components are fastened by ties and/or glue. Modules with the "ms" option meet the standard EN61373 regarding shock and vibration.
mechanical options
Standard mounting "Eurocassette" pluggable module for 19" sub-racks 8
Option "w" (wall mounting): Module is screwed against a mounting plate for installation in a cabinet. The load connections are typically a terminal block.
Option "cha" (chassis mount) Module is designed for installation to a structure or within cabinet. Screw type connectors are supplied with the module.
Option "din" (DIN rail mount) Module is designed for DIN rail mounting to a structure or within Cabinet. Screw type connectors are supplied with the module.
Technical Illustrations
Downloads
Schaefer_cb4800-AC-DC-PS-BatteryChargers-DC-DC-Converters.pdf
INPUT
Input voltage 1ph 115/230Vac
3ph 200/400/480Vac
See selection table
Units will turn off with under or over input voltage.
No-load input power 3-6W model (series dependant)
Inrush current AC input limited by thermistor
Switch on time 1-2 seconds.
Input Options Option au: Autoranging for 115/230Vac input
Option pr: Power OK via relay contacts
OUTPUT
Output voltage Voltage: 12 - 400Vdc
Output current See selection table.
Ripple & noise 1% + 30mVpp
Line regulation 0.1% (±10%)
Load regulation 0.2% typical, load step 10-90%
Load transient 6% typical, load step 10-90%
Response time 2-3ms typical ±1%
Temperature coefficient 0.02% per °C typical.
Holdup time 10mS at 220VAC typical
Turn on rise time 100mS typical (soft start)
Remote sensing Standard for all series
Efficiency 80%-92% typical
Output Options Option dd: Decoupling Diode for redundant / parallel operation Option cs: Active Current Sharing Option h: Remote on/off (inhibit) Option dr: DC OK via relay contacts
PROTECTION
Overload protection Current limited at 105%–110% of full load.
Overvoltage protection OVP switches off module with automatic return to operation
Protection Options Option i: Inrush Current Limiting
Option sd: Reverse polarity protection for DC input by Series Diode
MTBF 100Khrs to 140Khrs at 40°C acc. to MIL-HDBK-217E (notice 1)
ENVIRONMENTAL
Operating temperature -20°C to +75°C
(optional -40 to 75C)
Load derating Derate 2.5% per °C, from +55°C to 75°C
Cooling H: Heatsink - natural convection
F: Fan - increased airflow recommended
TF: Temperature controlled Fan included See selection table
Environment Options Option c: Extended temperature range to -40°C
Storage temperature -40°C to +85°C
Humidity Up to 95% RH, non-condensing
STANDARDS
EMI standards acc. to EN61000-6-4 class A, optionally class B
Immunity standards acc. to EN61000-6-2
C-Tick AS/NZS CISPR11: 2002 Group1 Class A
Safety / Construction acc. to EN60950-1 / EN50178
Protection category IP20 acc. to EN60529 NEMA or others on request
MECHANICAL
Mounting See technical illustrations
Eurocassette, pluggable module for 19" subrack
Option w: Wall Mounting
Option cha: Chassis Mounting
Dimensions See Technical illustration
Connector H15 acc. to DIN 41612 H15 and high current connectors for I > 50A, or terminals / bolts / bars
Mechanical Options Option ms: Increased Mechanical Strength
Option t: Tropical protection
19" Rack Mounting Options Subrack Height 3U, 5U, 6U
Wiring, Front Panels
Accessories: Fuses, MCBs, Mains on/off switch
Contact Powerbox for rack configuration
INPUT
115VAC
± 20%		 OUTPUT AMPS INPUT
230VAC
+15% - 20%		 INPUT
3X200VAC
+15% - 20%		 INPUT
3X400VAC
+15% - 20%		 INPUT
3X480VAC
+15% - 20%		 OUTPUT AMPS COOLING OUTPUT VOLTAGE VOLTAGE ADJUSTMENT
C4862 260 C4882 C4862V C4882V C4892V 260 F 12 11-13
C4864 220 C4883 C4863V C4883V C4893V 220 F 15 14-16
C4865 150 C4884 C4864V C4884V C4894V 160 F 24 23-26
C4869 130 C4885 C4865V C4885V C4895V 140 F 28 26-30
C4866 72 C4889 C4869V C4889V C4899V 80 F 48 45 - 55
C4867 60 C4886 C4866V C4886V C4896V 66 F 60 58 - 68
C4867J 30 C4887 C4867V C4887V C4897V 40 F 110 100-130
C4868 16 C4887J C4867VJ C4887VJ C4897VJ 20 F 200 190-200
C4868J 16 C4888 C4868V C4888V C4898V 20 F 220 200-250
Cooling H: Heatsink - natural convection
F: Fan - increased airflow recommended
TF: Temperature controlled Fan included
See selection table
Model configuration options Add the options to the model number, eg. C4862-dd-dr-cs Options for Input, Output, Environmental and Mechanical follow.
19" Rack Mounting Options Subrack Height 3U, 5U, 6U
Wiring, Front Panels
Accessories: Fuses, MCBs, Mains on/off switch
Contact Powerbox for rack configuration
INPUT OPTIONS
Option “i” (inrush current limiting): A thermistor is connected in series with the input lines which changes its resistance from high to low when it gets hot. It does not reduce the current surge if the input power is interrupted for a short period of time not allowing the thermistor to cool down. Thermistors are fitted as standard to all mains input models except for 1-phase input of models > 2.5kW. Thermistors are available up to 45A. For higher input current an electronic inrush current limitation can be offered.
Option “ie” electronic inrush current limiting An electronic circuit limits the inrush current.
Option “sd” (series diode): A series diode protects the module against input voltage of wrong polarity (additional power losses).
Option “ad” (anti-parallel diode): To avoid the power losses of a series diode a diode is provided with opposite polarity in parallel to the input blowing an internal or external fuse if the module is connected to a supply with wrong polarity.
Option “au” (auto-ranging) For standard dual AC input models the range of 115/230Vac is to be selected by connecting the input line to different pins on the connector. With auto-ranging the unit senses the input voltage and provides automatically the correct connection.
Option “p” (power fail): A signal (logic or relay) is given if the input voltage (AC or DC) drops below the specified limit. In AC input units we sense the rectified input voltage so that a power fail alarm will not be triggered if at light loads mains power returns before the input capacitors are substantially discharged.
Option “r” (relay): A relay instead of a logic signal is provided for failure indication.
output options
Option “dd” (decoupling diode): For redundant operation the outputs of two or more units are paralleled behind de-coupling diodes so that an internal fault of one module does not affect the operation of the others. These diodes cause power losses.
Option “cs” (active current sharing): An additional control circuit provides active current sharing via an interconnecting wire between converters that operate in parallel. Active current sharing should be used for multi-output units operating in parallel.
Option “csi” (current sharing interrupt): Option "csi" will effect the removal of the "cs" signal. Should there be an instance where a unit is not supplying the load, then the effect of its "cs" signal is removed, and the load voltage is unaffected by this condition.
Option “h1” (inhibit): A terminal connected to the negative input line also shuts off the converter. This can also be used in conjunction with a thermal trip which shuts the unit down.
Option “h2” (inhibit): Operation of the unit is inhibited if a voltage signal (5V/10mA) is applied in reference to the negative line of the (main) output.
Option “rco” (reducing current limiting at over temperature) A circuit reduces the current limiting level at higher temperature (to be specified).
Option “d” (DC-ok, one output): A logic signal is given if the output voltage (main output in multi-output systems) is below the specified limit.
Option “m” (DC-ok, all outputs): In multi-output systems a logic signal is provided if the voltage of any output is below the specified limit.
Option “ac” (AC ok) A logic signal connected to relay contacts is given if the output voltage of an inverter is below the specified limit.
Option "y" (sys-reset): This logic signal is a combination of power fail and DC-ok as specified for VME systems.
Option "r" (relay): A relay instead of a logic signal is provided for failure indication.
environmental options
Option "t" (tropical protection):The unit is given additional protection by a heavy coat of varnish on the printed circuit board(s) and components.
Option "c" (extended temperature range):The circuit is designed and tested for operation at an ambient temperature as low as –40 °C.
Option "ms" (increased mechanical strength): Screws are secured by Locktite and heavy components are fastened by ties and/or glue. Modules with the "ms" option meet the standard EN61373 regarding shock and vibration.
mechanical options
Standard mounting "Eurocassette" pluggable module for 19" sub-racks 8
Option "w" (wall mounting): Module is screwed against a mounting plate for installation in a cabinet. The load connections are typically a terminal block.
Option "cha" (chassis mount) Module is designed for installation to a structure or within cabinet. Screw type connectors are supplied with the module.
Option "din" (DIN rail mount) Module is designed for DIN rail mounting to a structure or within Cabinet. Screw type connectors are supplied with the module.
Schaefer_cb4800-AC-DC-PS-BatteryChargers-DC-DC-Converters.pdf

Find the Right Model

Model Number Input Voltage (Vac) Output Voltage (Vdc) Output Current (A)
product variant C4862 115Vac ± 20 % 50/60Hz 12Vdc (Adj. 11 - 13Vdc) 260A
product variant C4863 115Vac ± 20 % 50/60Hz 15Vdc (Adj. 14 - 16Vdc) 220A
product variant C4864 115Vac ± 20 % 50/60Hz 24Vdc (Adj. 23 - 26Vdc) 150A
product variant C4865 115Vac ± 20 % 50/60Hz 28Vdc (Adj. 26 - 30Vdc) 130A
product variant C4869 115Vac ± 20 % 50/60Hz 48Vdc (Adj. 45 - 55Vdc) 72A
product variant C4866 115Vac ± 20 % 50/60Hz 60Vdc (Adj. 58 - 68Vdc) 60A
product variant C4867 115Vac ± 20 % 50/60Hz 110Vdc (Adj. 100 - 130Vdc) 30A
product variant C4867J 115Vac ± 20 % 50/60Hz 200Vdc(Adj. 190 - 200Vdc) 16A
product variant C4868 115Vac ± 20 % 50/60Hz 220Vdc (Adj. 200 - 250Vdc) 16A
product variant C4868J 115Vac ± 20 % 50/60Hz 400Vdc (Adj. 380 - 400Vdc) 8A
product variant C4883 230Vac +15%/-20% 50/60Hz 12Vdc (Adj. 11 - 13Vdc) 260A
product variant C4884 230Vac +15%/-20% 50/60Hz 24Vdc (Adj. 23 - 26Vdc) 160A
product variant C4885 230Vac +15%/-20% 50/60Hz 28Vdc (Adj. 26 - 30Vdc) 140A
product variant C4889 230Vac +15%/-20% 50/60Hz 48Vdc (Adj. 45 - 55Vdc) 80A
product variant C4886 230Vac +15%/-20% 50/60Hz 60Vdc (Adj. 58 - 68Vdc) 66A
product variant C4887 230Vac +15%/-20% 50/60Hz 110Vdc (Adj. 100 - 130Vdc) 40A
product variant C4887J 230Vac +15%/-20% 50/60Hz 200Vdc(Adj. 190 - 200Vdc) 20A
product variant C4888 230Vac +15%/-20% 50/60Hz 220Vdc (Adj. 200 - 250Vdc) 20A
product variant C4888J 230Vac +15%/-20% 50/60Hz 400Vdc (Adj. 380 - 400Vdc) 10A
product variant C4862V 3 x 200Vac +15%/-20% 50/60Hz 12Vdc (Adj. 11 - 13Vdc) 260A
product variant C4863V 3 x 200Vac +15%/-20% 50/60Hz 15Vdc (Adj. 14 - 16Vdc) 220A
product variant C4864V 3 x 200Vac +15%/-20% 50/60Hz 24Vdc (Adj. 23 - 26Vdc) 160A
product variant C4865V 3 x 200Vac +15%/-20% 50/60Hz 28Vdc (Adj. 26 - 30Vdc) 140A
product variant C4869V 3 x 200Vac +15%/-20% 50/60Hz 48Vdc (Adj. 45 - 55Vdc) 80A
product variant C4866V 3 x 200Vac +15%/-20% 50/60Hz 60Vdc (Adj. 58 - 68Vdc) 66A
product variant C4867V 3 x 200Vac +15%/-20% 50/60Hz 110Vdc (Adj. 100 - 130Vdc) 40A
product variant C4867VJ 3 x 200Vac +15%/-20% 50/60Hz 200Vdc(Adj. 190 - 200Vdc) 20A
product variant C4868V 3 x 200Vac +15%/-20% 50/60Hz 220Vdc (Adj. 200 - 250Vdc) 20A
product variant C4868VJ 3 x 200Vac +15%/-20% 50/60Hz 400Vdc (Adj. 380 - 400Vdc) 10A
product variant C4882V 3 x 400Vac +15%/-20% 50/60Hz 12Vdc (Adj. 11 - 13Vdc) 260A
product variant C4883V 3 x 400Vac +15%/-20% 50/60Hz 15Vdc (Adj. 14 - 16Vdc) 220A
product variant C4884V 3 x 400Vac +15%/-20% 50/60Hz 24Vdc (Adj. 23 - 26Vdc) 160A
product variant C4885V 3 x 400Vac +15%/-20% 50/60Hz 28Vdc (Adj. 26 - 30Vdc) 140A
product variant C4889V 3 x 400Vac +15%/-20% 50/60Hz 48Vdc (Adj. 45 - 55Vdc) 80A
product variant C4886V 3 x 400Vac +15%/-20% 50/60Hz 60Vdc (Adj. 58 - 68Vdc) 66A
product variant C4887V 3 x 400Vac +15%/-20% 50/60Hz 110Vdc (Adj. 100 - 130Vdc) 40A
product variant C4887VJ 3 x 400Vac +15%/-20% 50/60Hz 200Vdc(Adj. 190 - 200Vdc) 20A
product variant C4888V 3 x 400Vac +15%/-20% 50/60Hz 220Vdc (Adj. 200 - 250Vdc) 20A
product variant C4888VJ 3 x 400Vac +15%/-20% 50/60Hz 400Vdc (Adj. 380 - 400Vdc) 10A
product variant C4892V 3 x 480Vac +10%/-15% 50/60Hz 12Vdc (Adj. 11 - 13Vdc) 260A
product variant C4893V 3 x 480Vac +10%/-15% 50/60Hz 15Vdc (Adj. 14 - 16Vdc) 220A
product variant C4894V 3 x 480Vac +10%/-15% 50/60Hz 24Vdc (Adj. 23 - 26Vdc) 160A
product variant C4895V 3 x 480Vac +10%/-15% 50/60Hz 28Vdc (Adj. 26 - 30Vdc) 140A
product variant C4899V 3 x 480Vac +10%/-15% 50/60Hz 48Vdc (Adj. 45 - 55Vdc) 80A
product variant C4896V 3 x 480Vac +10%/-15% 50/60Hz 60Vdc (Adj. 58 - 68Vdc) 66A
product variant C4897V 3 x 480Vac +10%/-15% 50/60Hz 110Vdc (Adj. 100 - 130Vdc) 40A
product variant C4869VJ 3 x 480Vac +10%/-15% 50/60Hz 200Vdc(Adj. 190 - 200Vdc) 20A
product variant C4898V 3 x 480Vac +10%/-15% 50/60Hz 220Vdc (Adj. 200 - 250Vdc) 20A
product variant C4898VJ 3 x 480Vac +10%/-15% 50/60Hz 400Vdc (Adj. 380 - 400Vdc) 10A

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