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C3700D SERIES C3700D - Schaefer Euro Series DC/DC Converter

Features
  • 1000 - 1250W
  • Industrial Grade DC/DC Converter
  • High Operating Temp
  • Hot Pluggable
  • Wide Input Voltage
  • Configurable Options
  • Eurocassette Mounting
  • Wall Mounting
  • Chassis Mounting

C3700D - Schaefer Euro Series DC/DC Converter

Specifications

INPUT
Input voltage

DC Input voltage: 10 - 800Vdc

See selection table

Units will turn off with under or over input voltage.

No-load input
power
5-6W model (series dependent)
Switch on time 1-2 seconds.
OUTPUT
Output voltage

Voltage range; 4.5 - 400Vdc

See selection table

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

18-36V

OUTPUT

AMPS

 

INPUT

36-75V

INPUT

45-90V

INPUT

80-160V

INPUT

160 – 320V

INPUT

320 – 380 V

INPUT

320 – 640V

OUTPUT

AMPS

 

COOLING

 

OUTPUT

VDC

OUTPUT

RANGE

C3720 120(2)   C3730 C3740 C3750 C3770 C3780Z C3770G 150   F   5 4.5 – 5.5
C3721 80   C3731 C3741 C3751 C3771 C3781Z C3771G 100   H   9 8 – 10
C3722 70   C3732 C3742 C3752 C3772 C3782Z C3772G 85   H   12 11 – 13
C3723 56   C3733 C3743 C3753 C3773 C3783Z C3773G 70   H   15 14 – 16
C3724 40   C3734 C3744 C3754 C3774 C3784Z C3774G 50   H   24 23 – 26
C3725 35   C3735 C3745 C3755 C3775 C3785Z C3775G 42   H   28 26 – 30
C3729 19   C3739 C3749 C3759 C3779 C3789Z C3779G 23   H   48 45 – 55
C3726 15   C3736 C3746 C3756 C3776 C3786Z C3776G 18   H   60 58 – 68
C3727 8   C3737 C3747 C3757 C3777 C3787Z C3777G 10   H   110 100 – 130
C3727J 5   C3737J C3747J C3757J C3777J C3787ZJ C3777GJ 6   H   200 190 – 200
C3728 4   C3738 C3748 C3758 C3778 C3788Z C3778G 5   H   220 200 – 250
C3728J 2.5   C3738J C3748J C3758J C3778J C3788ZJ C3778GJ 3   H   400 380 – 400

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. C3674-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

OPTIONS
INPUT
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
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.
PROGRAMMING SEREIS 200-5800, 6600
Of output voltage
from 0 to 100%
By external signal, 0-10Vdc
By external signal, 4-20mA
By 10 turn potentiometer
By 10 turn potentiometer
eu1
eu2
eu3
eu4
Of output current
from 0 to 100%
By external signal, 0-10Vdc
By external signal, 4-20mA
By 270° potentiometer
By 10 turn potentiometer
ei1
ei2
ei3
ei4
iso
Isolating amplifier for programming
Programming via interface RS232 or IEEE488
MONITORING SERIES 200-5800, 6600
Of output voltage
from 0 to 100%
By external signal, 0-10Vdc
By external signal, 4-20mA
mu1
mu2
Of output current
from 0 to 100%
By external signal, 0-10Vdc
By external signal, 4-20mA
mi1
mi2
Isolating amplifier for programming iso
Programming via interface RS232 or IEEE488
CHARGER PROGRAMMING (ALL SERIES)
Temperature compensated charging voltage(sensor not included) tc
Temperature sensor Not interchangeable due to fixed
resistor values
ts1
  Interchangeable, IC controlled ts2
Automatic selection of charging characteristic (float / equalize
charge) with timer
ch1
Additionally: Manual selection of charging characteristic ch2
Additionally: Boost charge operation (manually activated with
time delayed return to normal operation)
ch3
PROGRAMMING / MONITORING- SERIES 6400
Programming of output voltage
and current from 0-100%
including isolation
By external signal, 0-10Vdc
By external signal, 4-20mA
e1
e2
Programming of output voltage
from 0-100%
By 270° potentiometer
By 10 turn potentiometer
eu1
eu2
Programming of output current
from 0-100%
By 270° potentiometer
By 10 turn potentiometer
ei3
ei4
Monitoring of output voltage
and current from 0-100%
including isolation
By external signal, 0-10Vdc
By external signal, 4-20mA
m1
m2
Remote on/off programming
and monitoring of output
voltage and current from
0-100% including isolation
By external signal, 0-10Vdc
By external signal, 4-20mA
Via RS232 and IEEE488
em1
em2
em3
Improved tolerance Between reference (external
signal) and measured value /
between measured value and
displayed signal: voltage 0.2%
and current 0.5%.
tol
environment
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.
mechanics
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 Illustration

  • C3700D C3700D
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