Technical Specification
S15-48-2.5
48Vin 2.5Vout 4.5A
BTCPower
TM
Safety Requirements (SR)
The unit meets UL/CSA/TUV safety requirements
per UL60950, TUV EN60950 and CSA C22.2
No.60950-00.
Basic insulation is provided
between input and output.
Caution:
The unit does NOT have a fuse inside. The safety
agencies require an external normal-blow fuse to be
used at the input side to achieve maximum safety. The
recommended fuse rating is 2A/100V.
Fig 6 shows the measured conducted EMC.
Six-sided metal shields for zero radiated
emission.
If the input source is non-SELV (ELV or a
hazardous voltage greater than 60 Vdc and less
than or equal to 75 Vdc), for the unit output to be
considered meeting the requirements of safety
extra low voltage (SELV), all of the following must
be met:
•
The input source is to be provided with
reinforced insulation from any hazardous
voltage, including the ac main.
•
The input pins of the unit are not operator
accessible.
•
For the whole system, for safety agencies
requirements, and for the combination of
the unit input side (primary side) and the
output side (secondary side), verify that
under a single fault, hazardous voltages
do not appear at the unit output side
(secondary side).
•
Never ground either of the input pins of
the unit without grounding one of the
output pins. This may allow a non-SELV
voltage to appear between the output pin
and ground.
Fig 6. Conducted EMC (150KHz-30MHz) test result, the
upper trace is the limit of EN55022 Class B specification
Fig 6A. The external filter circuit
C0 = 1.0 uF 250Vdc film capacitor
C1 = 1.0 uF 100Vdc ceramic capacitor
L1 = 2.2 mH Common mode choke
Electromagnetic Compatibility (EMC)
The unit’s conducted emission meets the
requirement of EN55022 Class B Specifications,
the external input filter is needed unless a stricter
conducted EMI/EMC limitation is required to
satisfy or user has its own requirement on the
input.
Input Transient Withstand (ITW)
The unit can withstand input transient voltage with
100V/100ms pulse and never be damaged.
Broadband TelCom Power, Inc. –
1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
P 6 of 11
Tel.: 714-259-4888 • Fax: 714-259-0840 • www.btcpower.com • Email: sales@btcpower.com PS S15-48-2.5 Rev4 1-30-05
BTCPOWER [ BROADBAND TELCOM POWER, INC. ]
