Lantronix SESPM1040-541-LT Series, Инструкция по установке, Страница: 54 / 64

Lantronix SESPM1040-541-LT-xx Install Guide
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PoE ++ Connectivity, Arcing, and Temperature Issues
•
PoE is not live until powered device (PD) and powered sourcing equipment (PSE) handshake.
•
When unplugging live PoE, an arc (or spark) occurs between plug and jack contacts.
•
Arcing can occur with all mated PoE connections. Note : the switch uses a gel-filled RJ45 connection to
reduce damage from arcing. Also, we recommend always disconnecting power from the ports before
unplugging.
• Ensure jack meets IEC 60512-99-001 for compliance.
• Ambient jack temperature must be 5 deg. C below maximum jack operating temperature. To operate in 60
deg. C ambient, you need a 65 deg. C rated jack.
See the BICSI webpage for your particular type of PoE (e.g., for PoE++ ). See the ANSI/NECA/BICSI 568-2006
Standard for Installing Commercial Building Telecommunications Cabling. ANSII/NECA/BICSI 568 describes
minimum requirements and procedures for installing the infrastructure for telecoms, including balanced
twisted-pair copper cabling and optical fiber cabling that transport telecommunications signals (e.g., voice, data,
and video). The 2008 NEC standard is a safety code widely adopted in the USA as minimum required safety rules
for the electrical industry. The 2008 NEC points to the ANSII/NECA/BICSI 568 standard as a best practices source
document.
PoE/PoE+/PoE++ Comparison Chart
The table below compares the three types of PoE supported.
Type Standards
Max.
Current
Twisted
pairs used
Power at
Source
Power at
Device
Max. Data
Rate
Standard
Ratified
PoE
IEEE 802.3af
(802.3at Type
1)
350 mA 2 pairs 15.4 W 13 W 1000Base-T 2003
PoE+ 802.3at Type 2 600 mA 2 pairs 30 W 25.5 W 1000Base-T 2009
PoE++
Approved IEEE
802.3bt Type 3
/ Approved
IEEE 802.3bt
Type 4
600 mA /
900 mA
4 pairs
60 W /
90 W 51 W /
71.3 W
10Gbase-T Sept 2018