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IMS7 Datasheet PDF : 14 Pages
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IMX7, IMS7 Series Data Sheet
7-Watt DC-DC Converters
Installation Instruction
Installation of the converters must strictly follow the national
safety regulations in compliance with the enclosure, 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; see Mechanical Data.
The converters should be connected to a secondary circuit.
Do not open the converter.
Ensure that a converter failure does not result in a hazardous
conditions.
To prevent excessive current flowing through the input lines in
case of a short-circuit, an external fuse specified in section
Input Fuse and Reverse Polarity Protection should be installed
in the non-earthed input supply line.
Standards and Approvals
The converters are approved according to IEC 60950-1 and UL/
CSA 60950-1 2nd Edition.
The converters have been evaluated for:
• Building-in
• Basic insulation input to output, based on their maximum
input voltage
• Pollution degree 2 environment
• Connecting the input to a secondary circuit, which is
subject to a maximum transient rating of
- 1500 V for 20IMX7, 24IMS7, 40IMX7, 48IMS7
- 2000 V for 70IMX7
- 2500 V for 110IMX7.
The converters are subject to manufacturing surveillance in
accordance with the above mentioned standards.
Railway Applications
To comply with railway standards, all components are coated
with a protective lacquer (except option Z).
Protection Degree and Cleaning Liquids
The protection degree of the converters is IP 30, except open-
frame models (option Z).
In order to avoid possible damage, any penetration of cleaning
fluids should be prevented, since the power supplies are not
hermetical sealed.
However, open-frame models (option Z) leave the factory
unlacquered; they may be lacquered by the customer, for
instance together with the mother board. Cleaning agents are
not permitted – except washing at room temperature with
isopropyl alcohol. If necessary, the mother board must be
cleaned, before fitting the open-frame converter.
Note: Cleaning liquids may damage the adhesive joints of the
ferrite cores.
Isolation
The electric strength test is performed in the factory as a routine
test in accordance with EN 50514 and IEC/EN 60950, and
should not be repeated in the field. The Company will not honor
any warranty claims resulting from electric strength field tests.
Table 12: Electric strength test voltages
Characteristic
Factory test >1 s
Input to output
o/o 3
20/40IMX 20/40IMX2 110IMX
24/48IMS 70IMX
1.2
1.5 1
2.0 0.1
Unit
kVAC
Equivalent DC volt. (1.5)
(2.1)
(2.5) 0.15 kVDC
Coupling
capacitance
1.2
1.2
1.2
–
nF
Insulation resist.
>100
>100 >100 –
MΩ
at 500 VDC
1 1.5 kVAC according to IEC 60950, sect. 6.2, Telecom equipment;
type test with 1.5 kVAC / 60 s (IEE 802.3).=
2 20/40IMX7 produced 2014 or later.
3 The test voltage between outputs is not applied as routine test.
Description of Options
Option M: SMD pins
This option allows surface mounting of the converters.
Option Z: Open Frame
For applications, where the protection by a housing is not
necessary or in the case that the motherboard should be
lacquered after fitting the converter; see Cleaning Liquids.
Option G: RoHS-6
Converters with a type designation ending by G are RoHS-
compliant for all six substances.
NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
Copyright © 2015, Bel Power Solutions Inc. All rights reserved.
www.belpowersolutions.com/power
BCD20007-G Rev AF, 31-Jul-2015
MELCHER
The Power Partners.
Page 14 of 14
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