Dc P Owe R S Upply - Arista 7000 Series Quick Start Manual

Co nne c ting Po we r Cable s
4.1.2

DC P owe r S upply

The DC powe r s upply conne cts to a circuit tha t provide s 40-72 VDC a nd 13.9–7.72 A.
dis pla ys the DC powe r s upply with the te rmina l cove r in pla ce (le ft illus tra tion) a nd with the te rmina l
cove r re move d (right illus tra tion).
Fig ure 4-2: DC Po we r S upply – te rminal c o ve r in plac e (le ft); te rminal c o ve r re mo ve d (rig ht)
Ens ure the wire s conne cting the DC powe r s upply to the powe r s ource me e t the following:
• DC Input Wire S ize : AWG 14 (2.0 mm
• S a fe ty Ground Wire S ize : AWG 14 (2.0 mm
• Wire Te rmina l (Lug): ring or s pa de , 14-16 AWG, #8 (4 mm) s cre w
• Ove rcurre nt prote ction: 20 A.
Impo rtant! Ens ure powe r is re move d from DC circuits be fore pe rforming a ny ins ta lla tion a ctions . Loca te circuit
bre a ke rs or fus e s on DC powe r line s s e rvicing the circuits . Turn off the powe r line circuits or re move
the fus e s .
To conne ct a DC powe r s upply to powe r s ource :
S te p 1 Re move the te rmina l cove r to e xpos e the conne ctors on the right s ide of the module
(Figure
S te p 2 Atta ch the a ppropria te lugs to the s ource DC wire s .
Us e DC ca ble s with e ithe r ins ula te d crimp-on s pa de lugs or ins ula te d crimp-on ring
conne ctors .
Impo rtant! Wire s ize mus t comply with loca l a nd na tiona l re quire me nts a nd e le ctrica l code s . Us e only coppe r wire .
S te p 3 Conne ct the DC-input wire s to the te rmina l block in this orde r:
1. Ground ca ble to the ground conne ctor on the te rmina l block.
2. Ne ga tive (–) s ource DC ca ble to the ne ga tive (–) conne ctor on the te rmina l block.
3. P os itive (+) s ource DC ca ble to the pos itive (+) conne ctor on the te rmina l block.
Impo rtant! Apply the ground conne ction firs t during ins ta lla tion a nd re move la s t whe n re moving powe r.
S te p 4 Re pla ce the te rmina l cove r.
16
4-2).
2
) or la rge r a s a ppropria te
2
) or la rge r a s a ppropria te
Quick S ta rt Guide : 7000 S e rie s 1 RU-Ge n 2 Da ta Ce nte r S witche s
Cabling the S witc h
Figure 4-2