H38x/EN GL/D11 Global Documentation
Page 10/53
DS Agile H38x
2.5 Technical specifications for safety
Unless otherwise stated in the equipment technical manual, the following data is applicable.
2.5.1 Protective fuse rating
The recommended maximum rating of the external protective fuse for equipments is 16A,
high rupture capacity (HRC) Red Spot type NIT, or TIA, or equivalent. The protective fuse
should be located as close to the unit as possible.
2.5.2 Protective class
EN 60950-1: 2006 Class I (unless otherwise specified in the
equipment documentation). This equipment
requires a protective conductor (earth) connection
to ensure user safety.
2.5.3 Installation category
EN 60950-1: 2006 Installation category II (Overvoltage Category II):
Distribution level, fixed installation.
Equipment in this category is qualification tested at
2 kV peak, 1.2/50 µs, 500 Ω, 0.5 J, between all
supply circuits and earth and also between
independent circuits.
2.5.4 Environment
The equipment is intended for indoor installation and use only. If it is required for use in an
outdoor environment then it must be mounted in a specific cabinet or housing allowing it to
meet the requirements of IEC 60529 with the classification of degree of protection IP54 (dust
and splashing water protected).
Pollution Degree - Pollution Degree 2 Compliance is demonstrated by reference to safety
Altitude - Operation up to 2000m standards.
EN 60950-1: 2006
2.6 Handling of Electronic Equipment
A person’s normal movements can easily generate electrostatic potentials of several
thousand volts.
Discharge of these voltages into semiconductor devices when handling circuits can cause
serious damage, which often may not be immediately apparent but the reliability of the circuit
will have been reduced.
The electronic circuits of Alstom products are immune to the relevant levels of electrostatic
discharge when housed in their cases. Do not expose them to the risk of damage by
withdrawing modules unnecessarily.
Each module incorporates the highest practical protection for its semiconductor devices.
However, if it becomes necessary to withdraw a module, the following precautions should be
taken in order to preserve the high reliability and long life for which the equipment has been
designed and manufactured.
1. Before removing a module, ensure that you are at the same electrostatic potential as
the equipment by touching the case.
1. Handle the module by its front-plate, frame, or edges of the printed circuit board. Avoid
touching the electronic components, printed circuit track or connectors.
2. Do not pass the module to any person without first ensuring that you are both at the
same electrostatic potential. Shaking hands achieves equipotential.
3. Place the module on an antistatic surface, or on a conducting surface that is at the
same potential as you.
4. Store or transport the module in a conductive bag.
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