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參數(shù)資料
| 型號(hào)： | 48IMS25-15-9 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 24 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 2/11頁 |
| 文件大小： | 225K |
| 代理商： | 48IMS25-15-9 |
Board Mountable
DC-DC Converters
IMS 25 Series
Edition 2/4.2000
10/11
Safety and Installation Instructions
Installation Instruction
Installation of the DC-DC converters must strictly follow the
national safety regulations in compliance with the enclo-
sure, mounting, creepage, clearance, casualty, markings
and segregation requirements of the end-use application.
Connection to the system shall be made via a printed circuit
board with hole diameters of 1.4 mm
±0.1 mm for the pins.
The units should be connected to a secondary circuit.
Check for hazardous voltages before altering any connec-
tions.
Do not open the module.
Ensure that a unit failure (e.g. by an internal short-circuit)
does not result in a hazardous conditions. See also:
Safety
of operator accessible output circuit.
Input Fuse
To prevent excessive current flowing through the input sup-
ply line in case of a short-circuit across the converter input
an external fuse should be installed in a non earthed input
supply line. We recommend a fast acting fuse F5A for
24 IMS 25 types and F3.15A for 48 IMS 25 types.
Standards and approvals
All DC-DC converters are pending to be UL recognized
according to UL 1950, UL recognized for Canada to CAN/
CSA C22.2 No. 950-95 and LGA approved to IEC/EN
60950 standards.
The units have been evaluated for:
Building in
Supplementary insulation input to output, based on their
maximum input voltage
The use in a pollution degree 2 environment
Connecting the input to a secondary circuit which is sub-
ject to a maximum transient rating of 1500 V
After approvals the DC-DC converters are subject to manu-
facturing surveillance in accordance with the above men-
tioned UL, CSA, EN and ISO 9001 standards.
Isolation
The electric strength test is performed as factory test in ac-
cordance with IEC/EN 60950 and UL 1950 and should not
be repeated in the field. Power-One will not honour any
guarantee claims resulting from electric strength field tests.
Table 12: Electric strength test voltages
Characteristic
Input to output
Unit
Electric strength
1.1
kVrms
test voltage 1 s
1.5
kV DC
Coupling capacitance
≈2.2
nF
Insulation resistance
>100
M
at 500 V DC
Partial discharge
Consult
kV
extinction voltage
factory
Fig. 13
Pin allocation
Protection Degree
The protection degree of the DC-DC converters is IP 40.
Cleaning Agents
In order to avoid possible damage, any penetration of
cleaning fluids should be prevented, since the power sup-
plies are not hermetically sealed (use option Z).
Safety of Operator Accessible Output Circuit
If the output circuit of a DC-DC converter is operator acces-
sible, it shall be an SELV circuit according to IEC/EN 60950
related safety standards
The following table shows some possible installation con-
figurations, compliance with which causes the output circuit
of the DC-DC converter to be an SELV circuit according to
IEC/EN 60950 up to a configured output voltage of 42 V.
However, it is the sole responsibility of the installer to en-
sure the compliance with the relevant and applicable safety
regulations. More information is given in:
Technical Infor-
mation: Safety.
1
2
4
3
13
17
15
09116
Table 13: Pin allocation
Pin No.
Single output
option i
1Vi+
Vi+
2Vi–
Vi–
3W
W
4SD
i
13
Vo+
15
Vo–
17
Trim
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