TC Communications TC8518 T1, Руководство пользователя

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B Safety Environment
TC8518 Rev 2.2 User Manual B-3
• Only switch on the supply voltage to the device if the housing is closed, the
terminal blocks are wired up correctly and the terminal blocks are connected to
the correct type of voltage supply.
B.3.0.2 Grounding
All TC Communications products are fully grounded and are in compliance
accordance with all regulations and
Specifications (TC8518), on page 1-10.
B.3.0.3 Housing
Only technicians authorized by TC Communications are permitted to open the
housing and break the seal.
• Ensure that the electrical installation meets local or nationally applicable safety
regulations.
• Never insert pointed objects (thin screwdrivers, wires, etc.) into the inside of
the ventilation holes in the side of the housing! Failure to observe this point
may result in injuries caused by electric shocks.
B.4 Environment
“Industrial Hardened” and “Industrial Ethernet” describe communications products
designed to operate in industrial process control environments or geographical
locations where harsh conditions are common.
To meet this level of durability, “Industrial” grade (synonyms for “industrial”
commonly include “rugged,” “outdoor,” “hardened,” and “substation hardened”)
TC's communications products are manufactured with special components,
connectors and circuitry. This ensures reliable operation in the event of wide
temperature swings, electromagnetic interference (EMI), radio interference,
vibrations, or moisture and humidity fluctuations. Conformal coating is optional.
TC Communications Industrial Grade products are designed to exceed pertinent
industry specifications. For example, communications equipment used in power
substations are subject to extremes of temperature and humidity, as well as electrical
transients from high voltage switching.
These environmental conditions are described in industrial standard specifications
IEC 61850-3 and IEEE 1613 for networking devices. Similarly, equipment used for
traffic control applications are required to withstand roadside vibration in addition to
high/low heat and humidity. Testing standards pertinent to traffic control are
described in the environmental requirements of the NEMA TS-2 standard.
Every TC Communications product passes through “live operating temperature”
testing (unlike randomly selected products for statistical sampling) before it is
shipped. Each unit is connected to an operating BER tester to ensure error-free
operation while the temperature chamber cycles from -40ºC to 80ºC during the 24
hour testing period.