CD5.241-L1 Datasheet, PDF (19/21 Pages) PULS GmbH – DC/DC Converter

CD-Series
CD5.241-L1
DC/DC Converter 24V, 3.8A
21.4. EXTERNAL INPUT PROTECTION
The unit is tested and approved for branch circuits up to 50A. An external protection is only required, if the supplying
branch has an ampacity greater than this. Check also local codes and local requirements. In some countries local
regulations might apply.
If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of
the circuit breaker. A minimum value of 10A B- or 8A C-Characteristic breaker should be used.
21.5. REQUIREMENTS FOR THE SUPPLYING SOURCE
In certain circumstances, the input filter of the DC/DC converter can show a resonant effect which is caused by the
supplying network. Especially when additional external input filters are utilized, a superimposed AC voltage can be
generated on the input terminals of the DC/DC converter which might cause a malfunction of the unit. Therefore,
additional input filters are not recommended. To avoid the resonant effects, the minimal resistance of the supplying
network which depends on the inductance of the input network, shall be above the boundary curve in Fig. 21-3.
Fig. 21-3 External input filter requirements to
avoid filter instabilities
Resistance of the
supplying network
1 Ohm
(a)
(b)
100 mOhm
10 mOhm
(a) max.
(b) typ.
1 mOhm
0.1mH
1mH
10mH
Inductance of the supplying network
21.6. PARALLEL USE TO INCREASE OUTPUT POWER
This DC/DC-converter is designed to meet the NEC Class 2 requirements. Do not use in parallel to increase the output
current. This would increase the output current and violates the NEC Class 2 limitations. Use CD5.241 or CD5.241-S1.
21.7. PARALLEL USE FOR REDUNDANCY
This DC/DC-converter is designed to meet the NEC Class 2 requirements. Do not use in parallel for redundancy. This
would increase the output current and violates the NEC Class 2 limitations. Use CD5.241 or CD5.241-S1.
Mar. 2016 / Rev. 1.2 DS-CD5.241-L1-EN
All parameters are specified at 24V, 3.8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
19/21