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xxi
Date Code 20081022
Instruction Manual
SEL-787 Relay
Preface
Safety and General Information
The following figure shows the LED location specific to the SEL-787 (see
for the complete rear-panel drawing).
LED Location Specific to the SEL-787
Environmental
Conditions and
Voltage Information
The following table lists important environmental and voltage information.
LED Safety Warnings and Precautions
➤
Do not look into the end of an optical cable connected to an
optical output.
➤
Do not look into the fiber ports/connectors.
➤
Do not perform any procedures or adjustments that are not
described in this manual.
➤
During installation, maintenance, or testing of the optical
ports only use test equipment classified as Class 1 laser
products.
➤
Incorporated components such as transceivers and laser/LED
emitters are not user serviceable. Units must be returned to
SEL for repair or replacement.
POR
T 2
T
X
1
POR
T 1A
POR
T 1B
Fiber-Optic (LED) Ports
Condition
Range/Description
Indoor/outdoor use
Indoor
Altitude
Up to 2000 m
Temperature
IEC Performance Rating
(per IEC/EN 60068-2-1
and IEC/EN 60068-2-2)
–40 to +85°C
UL/CSA Safety Rating
–40 to +70°C
Relative humidity
5 to 95%
Main supply voltage fluctuations
Up to ±10% of Nominal voltage
Overvoltage
Category II
Pollution
Degree 2
Atmospheric pressure
80 to 110 kPa
Summary of Contents for SEL-787
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