Jcs1200 Dc Power Electrical Safety Guidelines; Jcs1200 Agency Approvals And Compliance Statements - Juniper JCS1200 Hardware Manual

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JCS1200 DC Power Electrical Safety Guidelines

Related
Documentation

JCS1200 Agency Approvals and Compliance Statements

Copyright © 2010, Juniper Networks, Inc.
General Electrical Safety Warnings for M Series, MX Series, and T Series Routers on
page 178
The following guidelines are provided for connecting a 60 A JCS1200 platform to a –48
V DC power source:
The power source must have a minimum of 80 A overcurrent protection. See article
240, paragraph 3, table 310-16 of the National Electric Code for more information about
electrical wiring requirements.
The overcurrent protective device or circuit breaker must be accessible to service
personnel to prevent the power from being turned on by someone other than a
technician servicing the JCS1200 platform.
The JCS1200 platform requires a DC wire rating of 4 AWG (circular mil area of
33100-52600) and of 90° C.
NOTE: The actual wire gauge and ring terminal are determined by the
current draw and the length of wire run or as specified by the customer
premises guidelines.
Flexible DC wiring is recommended to allow for minimum bend radius.
The supply wiring to the power connectors must be terminated in UL-recognized
insulated ring terminals, sized for an M6 stud, 4 AWG wire (circular mil area of
33100-52600), and a wire insulation diameter of 12.8 to 13.1 mm. An example of this
type of ring terminal is Amp Plasti-Grip type 520431 using Tyco Electronics Hydraulic
Crimping Tool part number 14907491.
For NEBS compliance, the grounding cable must use copper conductors with a size
minimum of 6 AWG (circular mil area of 2080033100) and must be terminated in a
UL-recognized two-hole lug sized for an M6 stud. An example of this type of two-hole
lug is the Thomas and Betts part number 54205 using the Thomas and Betts crimping
tool model TBM-25S.
Torque the wiring-terminal nuts to 13.3 lb-in. (1.5 Nm)
Connecting the JCS1200 DC Platform to DC Power on page 67
Site Electrical Wiring Guidelines for the JCS1200 Platform
DC Power Electrical Specifications for the JCS1200 Platform on page 198
Power Consumption for a DC-Powered JCS1200 Platform on page 199
JCS1200 Agency Approvals on page 188
Compliance Statements for NEBS for JCS1200 Platforms on page 189
Appendix A: JCS1200 Safety and Regulatory Compliance Information
187