Mandatory Regulations
7705 SAR-M Chassis Installation Guide 47
Laser Interface
The equipment uses laser devices that are rated in accordance with IEC 60825-1 as Class 1
devices.
Safety Approval for DC Systems
The DC source for the equipment must meet the requirements of a SELV source as defined
in EN 60950-1. For 60V station battery systems, the source is considered TNV-2 as per
IEC/EN 60950-1 and must have reinforced insulation from the AC mains.
The equipment complies with the following Product Safety specification: EN 60950-1.
Protective Earth
Protective earth is referred to as chassis ground in this document. A green, or green and
yellow, colored earth wire must be connected from the site equivalent of the mains earth
connection to all shelves in accordance with IEE Wiring Regulations (16th edition). This
connection is made via the chassis ground connection (refer to Chassis Ground Wiring for
specific instructions on connecting the protective earth). The protective earth is also carried
by the mains plug and socket (for AC systems only).
Approval for External AC Rectifiers
When the system is equipped with an external AC rectifier, the rectifier must meet
EN 60950-1 SELV DC output requirements. Make sure that the rectifier is rated and adjusted
for the appropriate AC input voltage and frequency for the country where it is installed. Set
the output of the rectifier according to the installation and operating instructions of the
manufacturer, to provide output levels that coincide with the nominal DC input ratings of the
system.
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