UPS - system

Capacitor buffered power supply
manufacturer: J. Schneider Elektrotechnik GmbH
type
: C-TEC 2408-20
Art.-No.
:
Short description:
The DC- buffer module of the series C-TEC works with ultra-capacitors as energy storage inside the
housing. These capacitors are charge by a external regulated DC-power supply in normal operation.
In case of an interruption of the DC-power supply the energy of the capacitors is released. The load is
supplied by the buffer module till it is discharged. The back-up time depends on the state of charge of
the capacitors and on the discharge current.
Nominal input voltage
Nominal input current
Max. inrush current
Output voltage in buffer operation
System voltage 24V
Nominal output current
Limitation current control
Switch off in case of exceeding
Current limitation
efficiency
energy
Back-up time
Protective system
Storage temperature
Operational temperature
Fusing input
Fusing capacitor circuit
Fusing output
LED- display

Relais -output
Shut-down

Norms and regulations
connection, in-/ output
connection, messages
dimensions
weight

24 V DC -15/+10 %
8A
35A/2ms
Depending on load
23,5 V DC 2 %
10 A DC
10,3 A DC ± 0,1 A
After 1,5 sec
1,05 ... 1,2 x IA Nom
> 90 %
20 kJ
Depending on load
IP20
- 40 … + 70 °
C
- 40 ... + 60 °
C
15 A internal
25 A internal
15 A internal, 10 A slow acting (external)
operation LED green illuminates at system-voltage
present
UE o.k. LED green illuminates at external supply
present
Uc > LED green illuminates at:
Energy in capacitor > 80 %
error LED red illuminates at:
overvoltage at internal capacitor
over- or under voltage at terminal UI
over current at the output
potentialfree Relais - contact, closer 30 V DC / 0,5 A
Interruption of the UPS operation
Potential free input
Switching level: 24V DC (6-45 V DC)
EN 50 178 / EN 60950
Spring type terminals max. 2,5 mm²
Spring type terminals max. 1 mm²
165 x 185 x 145 mm
2,8 kg