Agency Approvals And Compliance Statements For The M120 Router - Juniper Networks Hardware Manual

M120 Multiservice Edge Router Hardware Guide
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Agency Approvals and Compliance Statements for the M120 Router

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A DC-powered router that is equipped with a DC terminal block is intended only for
installation in a restricted access location. In the United States, a restricted access
area is one in accordance with Articles 110-16, 110-17, and 110-18 of the National Electrical
Code ANSI/NFPA 70.
NOTE: Primary overcurrent protection is provided by the building circuit
breaker. This breaker should protect against excess currents, short circuits,
and earth faults in accordance with NEC ANSI/NFPA70.
Ensure that the polarity of the DC input wiring is correct. Under certain conditions,
connections with reversed polarity might trip the primary circuit breaker or damage
the equipment.
For personal safety, connect the green and yellow wire to safety (earth) ground at both
the router and the supply side of the DC wiring.
The marked input voltage of –48 VDC for a DC-powered router is the nominal voltage
associated with the battery circuit, and any higher voltages are only to be associated
with float voltages for the charging function.
Because the router is a positive ground system, you must connect the positive lead to
the terminal labeled
RETURN
earth ground to the chassis grounding points.
M120 DC Power Supply Description on page 31
Installing an M120 DC Power Supply on page 180
Replacing an M120 DC Power Supply on page 177
Replacing an M120 DC Power Supply Cable on page 183
Agency Approvals for M120 Routers on page 219
Compliance Statements for NEBS for the M120 Router on page 220
Compliance Statements for EMC Requirements for the M120 Router (European
Community) on page 221
Compliance Statements for EMC Requirements for M Series, MX Series, and T Series
Routers (United States) on page 222
Compliance Statements for EMC Requirements for M Series, MX Series, and T Series
Routers (Japan) on page 222
Compliance Statements for EMC Requirements for M Series, MX Series, and T Series
Routers (Canada) on page 223
Compliance Statements for Environmental Requirements for M Series, MX Series, and
T Series Routers on page 223
Compliance Statements for Acoustic Noise for the M120 Router on page 223
, the negative lead to the terminal labeled
Copyright © 2010, Juniper Networks, Inc.
, and the
–48V