24H1601-2R POWER ONE, 24H1601-2R Datasheet - Page 14

• Manufacturer Part Number: 24H1601-2R
• Description: CONV DC-DC 50W 24VDC CASSETTE
• Manufacturer: POWER ONE
• Series: Hr
• Type: Isolatedr

Specifications of 24H1601-2R

• Output: 24V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Surface Mount
• Voltage - Input: 14 ~ 30V
• Package / Case: Module
• 1st Output: 24 VDC @ 2A
• Size / Dimension: 6.63" L x 4.38" W x 1.52" H (168.5mm x 111.2mm x 38.7mm)
• Power (watts) - Rated: 50W
• Operating Temperature: -10°C ~ 50°C
• Efficiency: 83%
• Approvals: CE, cUL, TUV, UL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Other names: Q1166581

Safety of operator accessible output circuit
If the output circuit of a DC-DC converter is operator
accessible, it shall be a SELV circuit according to the IEC/
EN 60950 related safety standards.
Since the H series DC-DC converters provide double or
reinforced insulation between input and output, based on a
rated primary input voltage of 250 VAC and 400 VDC only
operational insulation is needed between the AC mains and
the input of the DC-DC converter. This means that there is
no need for an electrical isolation between the AC mains
circuit and the DC-DC converter input circuit to cause the
output of an H series DC-DC converter to be a SELV circuit.
Table 15: Safety concept leading to a SELV output circuit
1
2
3
Fig. 14
Schematic safety concept.
Use earth connection as per table: Safety concept leading
to a SELV output circuit . Use fuse according to: Installation
Instructions.
REV. MAR 27, 2006
Conditions Front end
Nominal
supply
voltage
Mains
-250 VAC
The front end output voltage should match the specified operating input voltage range of the DC-DC converter.
The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950. If the converter
case shall not be connected with earth, the front end output circuit has to be insulated from earth according to the relevant safety
standard by at least basic insulation, based on the maximum nominal output voltage from the front end, and insulated from the
converter case by at least supplementary insulation, based on the maximum nominal mains voltage. The converter case is then
considered to be a double-insulated accessible part.
Minimum required grade
of isolation, to be provided voltage from the
by the AC-DC front end,
including mains supplied
battery charger
Operational (i.e. there is
no need for electrical
isolation between the
mains supply voltage and
the DC-DC converter
input voltage)
~
~
Mains
AC-DC
front
end
pin and earth can
Nominal DC output Minimum required
front end
-400 V
rated voltage
between any input
be up to 250 VAC
or 400 VDC)
-400 V
1
(The
Max. 250 VAC
or ±400 VDC
Max. 250 VAC
or ±400 VDC
Battery
Page 14 of 19
safety status of the specified safety status of
front end output
circuit
Primary circuit
Unearthed
hazardous voltage
secondary circuit
Only voltage adaptation and rectification to the specified
input voltage range of the DC-DC converter is needed.
The following table shows some possible installation
configurations, compliance with which causes the output
circuit of the DC-DC converter to be a SELV circuit
according to IEC/EN 60950 up to a configured output
voltage (sum of nominal voltages if in series or +/–
configuration) of 36 V.
However, it is the sole responsibility of the installer to
assure the compliance with the relevant and applicable
safety regulations. More information is given in: Technical
Information: Safety .
Fuse
Fuse
50 Watt DC-DC Cassette Converters
DC-DC
DC-DC converter
Measures to achieve the
the output circuit
Double or reinforced insulation,
based on 250 VAC and 400 VDC
(provided by the DC-DC converter)
and earthed case
Supplementary insulation, based
on 250 VAC and 400 VDC, and
double or reinforced insulation
based on the maximum nominal
output voltage from the front end
(both provided by the DC-DC con-
verter) and earthed case
verter
con-
connection
Earth
SELV
10024
H Series Data Sheet
2
+
–
3
www.power-one.com
Result
Safety status
of the DC-DC
converter
output circuit
SELV circuit