Figure 144: Grounding Cable Lug
The grounding cable must meet the requirements in Table 33 on page 338.
Table 33: Grounding Cable Specifications
Connector Specification
Quantity and Specification
Cable Type
Cable lug; dual hole.
Left pair: sized to fit M6 grounding
studs.
Right pair: sized to fit 1/4-20 UNC
grounding studs.
One 8-AWG (8.35 mm
2
) (minimum)
copper conductor, or as permitted by
the local code.
Grounding
TX Matrix DC Power System Specifications
Table 34 on page 338 lists the power system electrical specifications.
Table 34: Power System Electrical Specifications
Specification
Item
Operating range: –40.5 to –72 VDC
NOTE: If the input voltage from the DC power source drops below
–40.5 VDC, the router automatically shuts down. During automatic
shutdown, the circuit remains active. When the input voltage returns
to –42.75 VDC, the router automatically starts up again and the
system returns to normal operation within 30 minutes. No operator
intervention is required.
DC input voltage
95 A @ –48 VDC (nominal) (4560 W)
DC system current rating
TX Matrix DC Power Supply Specifications
Use a customer site circuit breaker for each power supply input. We recommend that
you provision a circuit breaker for each DC power supply input rated for at least 125% of
the continuous current that the input draws at –48 VDC, or as required by local code.
Table 35 on page 339 lists the power supply electrical specifications for the two-input
160-A power supply.
Copyright © 2010, Juniper Networks, Inc.
338
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Страница 389: ...PART 6 Index Index on page 359 357 Copyright 2010 Juniper Networks Inc ...
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