Poweredge-2950 User's Guide4 en-us

Dell PowerEdge 2950 Systems

Cabling Instructions for the

48 VDC Power Supply

Dell PowerEdge 2950

-48 VDC

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Dell PowerEdge 2950 Systems

Cabling Instructions for the

48 VDC Power Supply


Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CA

______

Informa 2006Reprodu

Tradema

Other traDell Inc.

March 20UTION: A CAUTION indicates a potential for property damage, personal injury, or death.

______________

tion in this document is subject to change without notice.2007 Dell Inc. All rights reserved.ction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

rks used in this text: Dell, the DELL logo, and PowerEdge are trademarks of Dell Inc.

demarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. disclaims any proprietary interest in trademarks and trade names other than its own.

07 P/N GJ891 Rev. A04

This document describes the requirements and wiring instructions for a 48 VDC power cable and safety ground wire for systems equipped with a 48 VDC power supply.

CAUTION: This equipment is designed to permit the connection of the earthed conductor of the DC supply circuit

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book.book Page 3 Thursday, April 5, 2007 2:59 PMCabling Instructions for the 48 VDC Power Supply 3

the earthing conductor at the equipment. See installation instructions.

is equipment is designed to permit the connection of the earthed conductor of the DC supply circuit to the

rthing conductor at the equipment. If this connection is made, all of the following conditions must be met:

This equipment shall be connected directly to the DC supply system earthing electrode conductor or to a

bonding jumper from an earthing terminal bar or bus to which the DC supply system earthing electrode

conductor is connected.

This equipment shall be located in the same immediate area (such as, adjacent cabinets) as any other

equipment that has a connection between the earthed conductor of the same DC supply circuit and the

earthing conductor, and also the point of earthing of the DC system. The DC system shall not be earthed

elsewhere.

The DC supply source shall be located within the same premises as this equipment.

Switching or disconnecting devices shall not be in the earthed circuit conductor between the DC source and

the point of connection of the earthing electrode conductor.

AUTION: A qualified electrician must perform all connections to DC power and safety grounds. The system

ust be safety grounded at the cabinet frame. All electrical wiring must comply with applicable local or national

des and practices.

AUTION: The system chassis must be positively grounded to the rack cabinet frame. Do not attempt to connect

wer to the system until grounding cables are connected.

AUTION: An energy hazard will exist if the safety ground cable is omitted or disconnected.

aution Statementsoduct is intended for restricted access locations (dedicated equipment rooms, equipment closet, ike) in accordance with the National Electrical Code, American National Standards Institute /National Fire Protection Association (NFPA) 70.

e unit with copper only, unless otherwise specified, 10 American Wire Gauge (AWG) wire rated um 90C in parallel for source and return. Protect the 48 V (1 wire) with a branch circuit rent protection rated 30-A rated for DC with a high interrupt current rating.

ct the equipment to a 48 VDC supply source that is electrically isolated from the AC source (reliably ed 48 VDC SELV source). Ensure that the 48 VDC source is efficiently secured to earth (ground).

ly accessible disconnect device that is suitably approved and rated shall be incorporated in the iring.

AUTION: When stranded wiring is required, use approved wiring termination, such as closed-loop or

ade-type with upturned lugs. These terminations should be the appropriate size for the wires and must be

uble crimped, one on the conductor and one on the insulation.

AUTION: When installing the unit, the ground connection must always be made first and disconnected last to

event an energy hazard.

4 CAUTION: Never defeat the ground conductor or operate the equipment in the absence of a suitably installed

ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain

that suitable grounding is available.

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book.book Page 4 Thursday, April 5, 2007 2:59 PMCabling Instructions for the 48 VDC Power Supply

ut Requirements

t Contents

Tyco 556879-3 connector housing (1) or equivalent

Tyco 556880-2 connector contacts (3) or equivalent

AMP 2-320568-2 ring-tongue terminal (1) or equivalent

#8-32 nut equipped with lock washer (1)

quired Tools

Wire-stripper pliers capable of removing insulation from size 10 AWG solid or stranded, insulated copper wire

NOTE: Use alpha wire part #3080 or equivalent (65/30 stranding)

One UL 1015 10 AWG, 2 m maximum (stranded) black wire (48 VDC)

One UL 1015 10 AWG, 2 m maximum (stranded) red wire (48 VDC return)

One UL 1015 10 AWG, 2 m maximum green, stranded wire (optional connector ground)

One UL 1015 10 AWG, 2 m maximum green/yellow, green with a yellow stripe, stranded wire (safety ground)

AMP 90871-1 hand-crimping tool or equivalent

pply voltage: (4860) VDC

rrent consumption: 20 A maximum

Assembling the DC Input Power Cable

CAUTION: Before connecting safety ground or power cables to the connector, ensure that the power is removed

from the DC circuit. To ensure that the power is off, locate the circuit breaker on the DC source circuit. Switch the

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Figure 1

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2

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book.book Page 5 Thursday, April 5, 2007 2:59 PMCabling Instructions for the 48 VDC Power Supply 5

rcuit breaker to the off position and, if available, install an approved safety locking device to the circuit breaker

switch, to prevent against another person energizing the circuit.

struct the DC input power cable, perform the following steps:

rip the insulation from the ends of the DC power wires, exposing approximately 4.5 mm .175 inches) of copper wire.

sing a hand-crimping tool, crimp a connector contact to each DC power wire.

o connect the optional connector ground, insert the green 48 VDC ground into connector housing sition 1 (see Figure 1-1 and Table 1-1).

OTICE: Figure 1-1 shows the connector housing and pin locations as viewed from the back of the connector.

sert the black 48 VDC wire into connector housing position 2 (see Figure 1-1 and Table 1-1).

sert the red 48 VDC return wire into connector housing position 3 (see Figure 1-1 and Table 1-1).

-1. Tyco Connector 556879-3 Housing Positions (Viewed from Back of Connector)

1. Connector Housing Pin Assignments

Description Wire Color and Size

48 VDC ground (optional) Green 10 AWG

48 VDC Black 10 AWG

48 VDC return Red 10 AWG

1 2 3

6Assembling and Connecting the Safety Ground Wire1 Strip the insulation from the end of the green/yellow wire, exposing approximately 4.5 mm

(0.175 inches) of copper wire.

2

3

Fig

CoTo

book.book Page 6 Thursday, April 5, 2007 2:59 PMCabling Instructions for the 48 VDC Power Supply

Using a hand-crimping tool, crimp the ring-tongue terminal to the green/yellow wire.

Connect the safety ground to the grounding post on the back of the system using a #8-32 nut equipped with a locking washer (see Figure 1-2).

ure 1-2. Power Supply Safety Ground

nnecting the 48 VDC Power Cable connect the 48 VDC power cable, plug the 48 VDC power cable into the system power supply.

1 green/yellow safety ground 2 grounding post 3 locking washer

4 #8-32 nut

1 2 3

4

Dell PowerEdge 2950

-48 VDC


______

2006

De

2007 3

book.book Page 8 Thursday, April 5, 2007 2:59 PM

______________

2007 Dell Inc.

ll Inc.

Dell DELL PowerEdge Dell Inc.

Dell Inc.

P/N GJ891 A04

-48 VDC -48 VDC

4

book.book Page 9 Thursday, April 5, 2007 2:59 PM 48 VDC 9

(ANSI)/ (NFPA) 70

(AWG) 10 90C 30 A 48 V1

48 VDC 48 VDC SELV 8 VDC

(4860) VDC

20 A

10

Tyco 556879-3 1

Tyco 556880-2 3

1

2

3

4

5

book.book Page 10 Thursday, April 5, 2007 2:59 PM 48 VDC

AMP 2-320568-2 1

#8-32 1

10 AWG

Alpha #3080 65/30

UL 1015 10 AWG 2 m (48 VDC)

UL 1015 10 AWG 2 m48 VDC

UL 1015 10 AWG 2 m

UL 1015 10 AWG 2 m

AMP 90871-1

4.5 mm0.175

48 VDC 1 1-1 1-1

1-3

48 VDC 2 1-1 1-1

48 VDC 3 1-1 1-1

1-3. Tyco 556879-3

1

2

3

1-2.

1

2

3

book.book Page 11 Thursday, April 5, 2007 2:59 PM 48 VDC 11

4.5 mm0.175

#8-32 1-2

48 VDC 10 AWG

48 VDC 10 AWG

48 VDC 10 AWG

1 2 3

12

1-4.

1 2 3

book.book Page 12 Thursday, April 5, 2007 2:59 PM 48 VDC

48 VDC 48 VDC 48 VDC

1 2 3

4 #8-32

4

book.book Page 2 Thursday, April 5, 2007 2:59 PMPrinted in the U.S.A.

Dell PowerEdge 2950 SystemsDell PowerEdge 2950 -48 VDC Dell PowerEdge 2950 SystemsPrecaution StatementsAssembling the DC Input Power CableAssembling and Connecting the Safety Ground WireConnecting the -48 VDC Power Cable

Dell PowerEdge 2950 -48 VDC -48 VDC

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