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Document:	MicroVAX Site Preparation
Order Number:	EK-239AA-SP
Revision:	1
Pages:	36
Original Filename:

OCR Text

MicroVAX

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dlilgliltall

MicroVAX

Site Preparation
Order Number EK-239AA-SP-001

digital equipment corporation
maynard, massachusetts

July 1988

The information in this document is subject to change without notice and should not be construed as a
commitment by Digital Equipment Corporation.
Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document.
The software, if any, described in this document is furnished under a license and may be used or copied only
in accordance with the terms of such license. No responsibility is assumed for the use or reliability of software
or equipment that is not supplied by Digital Equipment Corporation or its affiliated companies.

The READER’S COMMENTS form on the last page of this document requests the user’s critical evaluation

assist in preparing future documentation.

The following are trademarks of Digital Equipment Corporation:

COMPACTape

MASSBUS

ThinWire

DEC

MicroVAX

ULTRIX

DECmate

PDP

UNIBUS

DECnet

P/OS

VAX

DECserver

Professional

VAXcluster

DECUS

Q-bus

VAXELN

DECwriter

Rainbow

VAXlab

DELNI

ReGIS

VMS

DEQNA

RSTS

DESTA

RSX

Work Processor

)

mflaflnanflw

A postpaid Reader’s Comments form appears on the last page of this document.
Please complete the form
and return it to DIGITAL. Your comments help us in preparing future documentation.
ML-5924

Contents
... ........................

System Dimensions for the BA23 Enclosure. . . .. ..........
System Dimensions for the BA123 Enclosure . . . ... ... .....

Physical Requirements

System Dimensions for the BA213 Enclosure . . . ... ........
System Dimensions for the H9642 Cabinet . . .. ...........

1
3
3
8

System Dimensions for the H9644 Cabinet . . ... ..........
Additional Equipment. . . .. . ... oo oo

... ...

Operating Environment . . . ... .....................

Acoustics

.. ...

Static Electricity . . . . . . . ...

Heat Dissipation . . ... ... .. ... . o
Temperature and Humidity Ranges . . . .. ...............

Electrical Requirements . . . . .. .....................
Electrical Requirements for MicroVAX Systems
in the BA23 and BA123 Enclosures . . . . .. ..............

Electrical Requirements for MicroVAX Systems

.,
in the BA213 Enclosure . . ... ... . ... . .. . .. ...
Electrical Requirements for MicroVAX Systems
in the H9642 Cabinet . . ... ... ... ... ... ... .. .. ..
Electrical Requirements for MicroVAX Systems

... ... ... . ...,

Operating Acoustic Emission Levels . .. ..............
o o
Heat Dissipation. . . . ... ... ...
Temperature and Humidity Ranges for MicroVAX Systems in
the BA23 and BA123 Enclosures . . ... ..............

in the H9644 Cabinet

. ... .. ... ...

Tables

2
3
4

Temperature and Humidity Ranges for MicroVAX Systems in
...
the BA213 Enclosure . . . ... ... .. ... .. ... . .

12
12
13

Temperature and Humidity Ranges for MicroVAX Systems in

the H9642 and H9644 Cabinets . . . ... ... ...........

240 V Power Cords for MicroVAX Systems in the BA23 and
BAI123 Enclosures . . .. ... ... ... ...

Electrical Requirements for MicroVAX Systems in the BA23
Enclosure

... ... ... ... ... .. ...

Electrical Requirements for MicroVAX Systems in the BA123
Enclosure

. ... ... .. ... ... ... ..

240 V Power Cords for MicroVAX Systems in the BA213

Enclosure
10

. ... ... ... . .. ..

240 V Power Cords for MicroVAX Systems in the H9642

Electrical Requirements for MicroVAX II and VAXstation

Cabinet.

. . . .. ... .. ..

II/GPX Systems in the H9642 Cabinet

... ............

Electrical Requirements for MicroVAX 3600 and VAXserver

Electrical Requirements for Auxiliary Cabinet Used with

3600/3602 Systems in the H9644 Cabinet
MicroVAX 3600 Systems . . . . . .. ...

.. ... ... ... ..
... ... ... ...

18
19

20
21

Electrical Requirements for Auxiliary Cabinet Used with
VAXserver 3602 Systems

Electrical Requirements for MicroVAX 3500 Systems in the
BA213 Enclosure . . . .. ... ... oL

Electrical Requirements for MicroVAX II Systems in the BA213
Enclosure

. ... ... ... . .. ...

. . . . ... ... .. .. ..

...

About This Guide
This guide describes the physical, environmental, and electrical requirements
for installing any of the MicroVAX systems listed in the following table. You
should verify that your site meets these requirements before moving a system
to its installation point.

MicroVAX Systems Covered by this Guide
System

Enclosure

MicroVAX II
MicroVAX 3500

BA23, BA123, BA213", H9644, H9642
BA213"

MicroVAX 3600

H9644

VAXserver 3600

H9644

VAXserver 3602

H9644

VAXstation II

BA23, BA123

VAXstation I11/GPX

BA23, BA123, H9642

*The BA213 enclosure referred to in this guide contains mass storage and two power supplies.

The BA23, BA123, and BA213 enclosures are designed for use in open office
environments. The BA23 enclosure is available in a pedestal or a tabletop
version. The BA123 and BA213 are floorstand enclosures.

You can also have the BA23 and BA213 rack mounted in a cabinet designed
for computer rooms rather than office environments. The BA23 rack mounts
in the H9642 cabinet. The BA213 rack mounts in the H9644 cabinet.

DIGITAL recommends that you have a DIGITAL service representative install
your system. When the system arrives, you should inspect it with a DIGITAL
service representative to ensure that the system and all ordered options have
arrived undamaged.

Each MicroVAX system is shipped in one large box that is clearly labeled.
Other boxes that arrive with your shipment may contain terminals, printers,
and software.

Physical Requirements
Before unpacking any system, make sure you have enough room to remove
the system from its shipping container. Also make sure you leave enough
room around the system so it can be serviced. Use the information in the
following sections to determine your system’s dimensions.

System Dimensions for the BA23 Enclosure
The following figure shows the dimensions of a MicroVAX in the BA23
enclosure. The figure also shows the dimensions of the shipping container.

CAUTION: Due to the weight of the equipment, DIGITAL recommends that at
least two people handle the system and terminal boxes.

72.6 cm

71.2cm/'l
(28 in)

(28.6 in )

107.31 cm
(42.25 in)

54.6 cm

(21.5 in)

64.2cm

.4 cm
44

‘

(17.5in)

(24.5 in)

46.5 kg (102 Ib)
FLOORSTAND

31.75 kg (70 Ib)

(10 in)

726 cm

(28.6 in)

""""

17.7 cm

"‘fl:

TABLETOP

CONVERSION

TABLETOP

29.5 kg (65 Ib)

J/(7 In)

TMy

56.2 cm

\</ (22.13 in)
MA-0168-87

MicroVAX Site Preparation

System Dimensions for the BA123 Enclosure
The following figure shows the dimensions of a MicroVAX in the BA123

enclosure. The figure also shows the dimensions of the shipping container.

CAUTION: Due to the weight of the equipment, DIGITAL recommends that at
least two people handle the system and terminal boxes.

52.07 cm

(20.50 in)

92.71cm

(36.50 in) \..'

69.85 cm
(27.5 in)

83.82 cm

]

(33.00 in)

]

_90

"JI j 62.23 cm
=103

(24.5 in)

Lm/

WEIGHT: 79.99 kg (220 Ib)

_—

./33.02 cm

“/ (13.0 in)

WEIGHT 59 kg (130 Ib)
MA.0162.87

MicroVAX Site Preparation

System Dimensions for the BA213 Enclosure
The following figure shows the dimensions of a MicroVAX in the BA213
enclosure. The figure also shows the dimensions of the shipping container.

CAUTION: Due to the weight of the equipment, DIGITAL recommends that at
least two people handle the system and terminal boxes.

66 cm /’"\ 72 cm
(26 in)

(28.5 in) \’]

53 cm
(21.0 in) —TM—
=

45 cm

——_(17.8in)
S

g 1)

ogem |

84 cm

(33 in)

.
\

WEIGHT: 45 kg (100 Ib)

WEIGHT: 45 kg to 68 kg

(100 Ib to 150 Ib)

MA.1371-86

You must leave at least 61 cm (24 in) of clearance at the front of the system,

for access to system controls.

You also must leave at least 5 cm (2 in) of

clearance at the sides and rear, for airflow. Since the base of the enclosure is

5 cm (2 in) wider than the cabinet in front and rear, you can place the rear
of the system against a wall or table, and the system will have enough room
for adequate airflow.

System Dimensions for the H9642 Cabinet
Systems that use the H9642 cabinet are shipped in large containers secured to
wooden pallets by four metal hold-down brackets. Other containers arriving
with your shipment may contain terminals, printers, software, and other
options.

MicroVAX Site Preparation

WARNING: A forklift is required to move this system and some options (those
mounted on pallets). Do not try to move or lift this equipment by yourself.
The cabinet is mounted on four wheels and has four adjustable leveling feet

for stability.
The weight of systems using the H9642 cabinet varies from 168 kg to 311 kg

(358 1b to 685 1b), depending on the mass storage subsystems contained in
the cabinet.

Plan your installation accordingly.

A fully loaded system with

RA60 and RA81 disk drives weighs 311 kg (685 1b).

The following figure shows the shipping dimensions of a MicroVAX system
in the H9642 cabinet.

147.3 cm

(58 in)

/V
76.2 cm

(30-in)

(41 in)
(358 Ib to 685 Ib)

MicroVAX Site Preparation

The following figure shows the dimensions of an unpacked MicroVAX in the

H9642 cabinet.

——

105.91 cm
(41.7 in)

91.44cm

(36 in)

(25.5 fimT

64.77

— \/
MA-0167-87

MicroVAX Site Preparation

Leave a minimum of 1.2 m (4 ft) from the front of the system to the
nearest stationary object, so the disk drives can be extended. The drives are

approximately 86.5 cm (33.75 in) deep.

WALL

DISK DRIVE

1.22m
(4 ft)

STABILIZER FOOT

s —

I
MA-0166-87

MicroVAX Site Preparation

Leave a minimum of 1.2 m (4 ft) from the rear of the system to the nearest
stationary object, so the rear door can be opened or removed. The rear door
is approximately 51.3 cm (20.0 in) wide.

Leave space on each side of the system to remove the side panels.

91.44cm —
(36in)

]

—

//
//
y/4

50.80 cm
(20 in)

v
MA-0165-87

MicroVAX Site Preparation

System Dimensions for the H9644 Cabinet
Systems that use H9644 cabinets are shipped in large containers secured to
wooden pallets by metal hold-down brackets. Other containers arriving with
your shipment may contain terminals, printers, software, and other options.
Plan to use about 3 m (10 ft) of floor space for removing each cabinet from
its pallet.

WARNING: You need a forklift to move this system and any option mounted

on a pallet. Do not try to move or lift this equipment by yourself.
The cabinet is mounted on four wheels.
A fully loaded H9644 cabinet, with an RA81 or RA82 disk drive, two RA
series disk drives, and a TK70 tape drive, weighs 206.6 kg (455 1b).

Plan

your installation accordingly.
The following figure shows the shipping dimensions of a MicroVAX system
in the H9644 cabinet.

142.2 cm

(56.0 in)

102.2 cm

(40.25 in)
69.2 cm

WEIGHT: 165.7 kg to 247.4 kg

(365 Ib to 545 Ib)
MA-1440-87

MicroVAX Site Preparation

The following figure shows the dimensions of an unpacked MicroVAX in the
H9644 cabinet.

106.8 cm

(41.6 in)

(21.25 in) \/ \/

(31.5in)

WEIGHT: 124.9 kg to 206.6 kg

(275 Ib to 455 Ib)

MA-1350-87A

If your system includes an auxiliary cabinet with an RA82 drive in the

bottom, leave a minimum of 1.2 m (4 ft) from the front of the cabinet to the
nearest stationary object, so the disk drives can be extended. The drive is
approximately 86.5 cm (33.75 in) deep.
Leave approximately 1 m (3 ft) from the rear of the system to the nearest
stationary object, so the rear door can be removed.

For cabinets containing a TU81E tape deck, leave enough room above the
cabinet to raise the cover of the tape deck.

Additional Equipment
In addition to the space required for the MicroVAX, you should make sure
there is enough space for terminals, a printer, mass storage media, printer

paper, and other necessary supplies. The temperature and humidity at which
mass storage media are kept should be the same as that of the computer area.

MicroVAX Site Preparation

If you plan to connect your system to peripheral devices such as printers,

terminals, or modems, you will need additional cabling. Cables connecting
the system to peripheral devices must be ordered separately.

When planning cable routing for multiple-terminal systems, you should
consider factors such as safety, convenience, future expansion, and cost. The
system installer has other special factors to consider when cabling a multipleterminal system on more than one floor in the same building, or in more than

one building. DIGITAL offers several cable types for these applications, and
DIGITAL Customer Service personnel are available to help you plan your
installation. Your sales representative can provide more information.

NOTE: Cabling from peripheral devices should already be in place and labeled

before the system is installed.

Acoustics
The BA23, BA123, and BA213 enclosures are designed for use in offices
However, the H9642 and H9644 cabinets

and other general working areas.

generate more noise than is acceptable for office use.

MicroVAX systems

using the H9642 or H9644 cabinet should be installed in a computer room.

Table 1:

Operating Acoustic Emission Levels

Enclosure

LNPE (B)

LPA (dB)

BA23

6.1

BA123

6.0

BA213

5.8

H9642 with no RA drives

6.0

H9642 with RA60 and RA81

7.6

H9644 with no RA drives

5.3

H9644 with RA82-AA (60 Hz)

7.3

H9644 with RA82-AD (50 Hz)

7.1

LNPE = Noise power emission level (A-weighted sound power level) measured in bels re 1 pw.
LPA = Sound pressure measured in decibels at 1.0 m from the front edge of the unit
and 1.5 m above the

floor.

Levels may be lower than those shown, depending on the kind and number of mass storage

devices in the sys-

All data measured in
accordance with ANSI $12.10-1985
tute) and ISO/DIS 7779 (International Standards Organization).

Standards

tem.

MicroVAX Site Preparation

(American

National

Insti-

Operating Environment
Computer systems in office areas are subject to discharge of static electricity,
temperature changes, and humidity. These conditions can affect the operation
and overall dependability of the computer system.

Your system should be installed in a well-ventilated area, where the
temperature and humidity ranges listed for your system are maintained
Rapid temperature changes may affect system
throughout the year.
performance. Therefore, do not operate systems near heating or cooling
devices, large windows, or doors that open to the outside. Air should contain
a minimum of dust and other abrasive contaminants.

Static Electricity
Static electricity is a common problem for microcomputer systems.

It can

cause system failure and loss of data. The most common source of static
buildup is contact between people and carpeting or clothing. Low humidity
allows the greatest buildup of static charges.

To minimize static buildup, follow these guidelines.
e

Maintain relative humidity of at least 40 percent.

Locate your system away from busy office corridors.

If possible, avoid using carpeting in the computer area. If you install
carpeting, use antistatic carpeting. If carpeting is already in place, place
an antistatic mat under the system.

If your site has antistatic floors, carpeting, or mats, make sure you
maintain their antistatic properties by following the manufacturer’s
recommendations for cleaning.

Heat Dissipation
Table 2 lists the values for heat dissipated by each of the MicroVAX
enclosures.

MicroVAX Site Preparation

Table 2:

Heat Dissipation

Enclosure

Heat Dissipation (BTU/h)

BA23

1177.4

BA123

2355

BA213

2304

H9642

5872 at 120 V, 6022 at 240 V

H9644 with no RA82

2408 at 120 V and 240 V

H9644 with RA82

4605 at 120 V and 240 V

Temperature and Humidity Ranges
The following tables list the temperature and humidity ranges for MicroVAX
systems in each type of enclosure. The tables also list the altitude limits.

Table 3:

Temperature

and

Humidity

Ranges for

MicroVAX

Systems in the BA23 and BA123 Enclosures
Parameter

Temperature

Range

Operating:”

10°C to 40°C
50°F to 104°F

Nonoperating;:

—-40°C to 60°C
~40°F to 140°F

Temperature rate of change

Operating;:

11°C per hour maximum
19.8°F per hour maximum

Relative humidity

Operating;:

20% to 80%
(noncondensing)

Maximum altitude

Nonoperating:

10% to 95%

Operating;:

2440 m (8000 ft)

Nonoperating;:

4900 m (16,000 ft)

*For operation above sea level, decrease the operating temperature by 1.8°C per 1000 m (or 1°F per 1000 ft).

MicroVAX Site Preparation

Table 4:

Temperature and Humidity Ranges for MicroVAX
Systems in the BA213 Enclosure

Range

Parameter

Operating:”

Temperature

Nonoperating:

10°C to 40°C
50°F to 104°F

—-40°C to 66°C
—40°F to 151°F

Temperature rate of change

Operating;:

Relative humidity

Operating;:

Maximum altitude

11°C per hour maximum
19.8°F per hour maximum

20% to 80%
(noncondensing)

Nonoperating;:

10% to 90%

Operating;:

2440 m (8000 ft)

Nonoperating;:

4900 m (16,000 ft)

*For operation above sea level, decrease the operating temperature by 1.8°C per 1000 m (or 1°F per 1000 ft).

Table 5:

Temperature and Humidity Ranges for MicroVAX
Systems in the H9642 and H9644 Cabinets
Range

Parameter

Temperature

Operating:*

15°C to 32°C
59°F to 90°F

Nonoperating;:

-40°C to 66°C
—-40°F to 151°F

Temperature rate of change

Operating:

Relative humidity

Operating:

11°C per hour maximum
19.8°F per hour maximum

20% to 80%
(noncondensing)

Nonoperating;:

10% to 95% (H9642)
10% to 90% (H9644)

Maximum altitude

Operating;:

2440 m (8000 ft)

Nonoperating:

4900 m (16,000 ft)

*For operation above sea level, decrease the operating temperature by 1.8°C per 1000 m (or 1°F per 1000 ft).

MicroVAX Site Preparation

Electrical Requirements
The power source should be able to handle the original system and allow for
system expansion. DIGITAL recommends a dedicated circuit from the power

source to each system. A dedicated circuit provides electrical isolation from
possible power surges or electrical noise caused by other appliances. For this
reason, you should not connect appliances such as air conditioners, office

copiers, or coffee pots to the same circuit as the system. The dedicated circuit
should provide an isolated ground path between the MicroVAX system and

the power source.

If you cannot avoid power disturbances, your system will need additional

power-conditioning equipment. For more information, contact your DIGITAL

sales representative.

Electrical Requirements for MicroVAX Systems
in the BA23 and BA123 Enclosures
Table 6 lists the power cords used to operate a MicroVAX at 240 V in the
BA23 and BA123 enclosures.
For more information on 240 V operation,
check with your DIGITAL sales representative.

Table 6:

240 V Power Cords for MicroVAX Systems in the
BA23 and BA123 Enclosures

Power Cord Number

Countries

BNO2A-2E

United Kingdom and Ireland

BNO0O3A-2E

Austria, Belgium, Czechoslovakia, Finland, France,
Germany, Hungary, Netherlands, Norway, Poland,
Portugal, Spain, and Sweden

BNO4A-2E

Switzerland

BNO5A-2E

Australia and New Zealand

BNO6A-2E

Denmark

BNO7A-2E

Italy

Table 7 lists the electrical requirements for MicroVAX systems in the BA23

enclosure.

MicroVAX Site Preparation

Table 7:

Electrical Requirements for MicroVAX Systems in the
BA23 Enclosure

Nominal AC Voltage —

100 Vac

120 Vac

220-240 Vac

Voltage range

90 to 110 Vac

104 to 128 Vac

191 to 256 Vac

Power source phase

Single

Nominal frequency

50 to 60 Hz

Frequency range

47 to 63 Hz

Maximum steady state

53 A

4.4 A

22 A

6 A

55 A

2.7 A

100 A

345 W

current at nominal voltage
Maximum

steady

state

cur-

rent at minimum voltage
Maximum inrush current
Maximum

power

consump-

tion

Table 8 provides electrical requirements for MicroVAX Systems in the BA123
enclosure.

Electrical Requirements for MicroVAX Systems in the

Table 8:

BA123 Enclosure

Nominal AC Voltage —

100 Vac

120 Vac

220-240 Vac

Voltage range

90 to 110 Vac

104 to 128 Vac

191 to 256 Vac

Power source phase

Single

Nominal frequency

50 to 60 Hz

Frequency range

47 to 63 Hz

Maximum steady state

105 A

8.8 A

4.4 A

A
12

11.0 A

55 A

100 A

690 W

current at nominal voltage
Maximum

steady

state

cur-

rent at minimum voltage
Maximum inrush current
Maximum

power

consump-

tion

MicroVAX Site Preparation

Electrical Requirements for MicroVAX Systems
in the BA213 Enclosure
Table 9 lists the power cords used to operate a MicroVAX at 240 V in the

BA213 enclosure.

Table 9:

240 V Power Cords for MicroVAX Systems in the
BA213 Enclosure

Power Cord Number

Countries

BN20B-2E

Japan

BN20C-2E

Australia and New Zealand

BN20D-2E

Austria, Belgium, Czechoslovakia, Finland, France,

Germany, Hungary, Netherlands, Norway, Poland,
Portugal, Spain, and Sweden
BN20E-2E

United Kingdom and Ireland

BN20F-2E

Switzerland

BN20H-2E

Denmark

BN20K-2E

India, South Africa

BN20L-2E

[srael

BN20J-2E

Italy

Table 10 and Table 11 show electrical requirements for MicroVAX systems
the BA213 enclosure.

MicroVAX Site Preparation

Table 10:

Electrical Requirements for
tems in the BA213 Enclosure

MicroVAX
|

Sys-

Nominal AC Voltage —

100 Vac

120 Vac

220-240 Vac

Voltage range

90 to 110 Vac

104 to 128 Vac

191 to 256 Vac

Power source phase

Single

Nominal frequency

50 to 60 Hz

Frequency range

47 to 63 Hz

Maximum steady state
current at nominal voltage

10.2 A

8.6 A

4.7 A

113 A

9.8 A

54 A

Startup current (30 seconds)

135 A

115 A

6.3 A

Maximum inrush current

100 A

Maximum

670 W

Maximum

steady

state

cur-

rent at minimum voltage

power

consump-

tion

Table 11:

Electrical Requirements for MicroVAX 3500 Systems in the BA213 Enclosure

Nominal AC Voltage —

101 Vac

120 Vac

220-240 Vac

Voltage range

88 to 110 Vac

104 to 132 Vac

176 to 264 Vac

Power source phase

Single

Nominal frequency

50 to 60 Hz

Frequency range

47 to 63 Hz

Maximum steady state

10.2 A

8.6 A

4.7 A

1.2 A

10 A

0.54 A

Startup current (30 seconds)

135 A

115 A

6.3 A

Maximum inrush current

100 A

670 W

current at nominal voltage
Maximum

steady

state

cur-

rent at minimum voltage

Maximum

power

consump-

tion

MicroVAX Site Preparation

Electrical Requirements for MicroVAX Systems
in the H9642 Cabinet
For 120 V operation, MicroVAX systems in the H9642 cabinet must use a
NEMA (National Electrical Manufacturers Association) L5-30R ac electrical
receptacle rated at 30 amperes.
For 240 V operation, most MicroVAX systems in the H9642 cabinet do not

use the NEMA connector.

Those 240 V systems that do use the NEMA

connector operate on 60 Hz.

Contact your DIGITAL sales representative for

information on any restrictions that may apply to 240 V, 60 Hz systems.

Table 12 lists the power cords used to operate a MicroVAX system at 240 V

in the H9642 cabinet.

Table 12:

240 V Power Cords for MicroVAX Systems in the
H9642 Cabinet

Power Cord Number

Country

Service

BN18B-4E

United Kingdom and Ireland

240 V

Austria, Belgium, Finland,

220V

BN18C—-4E

Netherlands, Norway, Portugal,
Spain, and Sweden
BN18D-4E

Australia and New Zealand

240 V

BN18E-4E

Italy and Switzerland

220 V

BN18F-4E

[srael

230 V

BN18H-4E

India

220V

BN18J-1K

240 V

BN18K-1K

Japan

100 V

MicroVAX Site Preparation

Table 13 shows the electrical requirements for fully configured systems in the
H9642 cabinet.
Maximum current and power values represent systems with two RA81 disk

drives installed.

Table 13:

Electrical
Requirements for MicroVAX
Il
and
VAXstation II/GPX Systems in the H9642 Cabinet

Nominal AC Voltage —

120 Vac

240 Vac

Voltage range

90 to 128 Vac

184 to 256 Vac

Power source phase

Single

Nominal frequency

60 Hz

50 Hz

Frequency range

59 to 61 Hz

49 to 51 Hz

Typical:

16.4 A

8.6 A

Maximum:

240 A

12.0 A

Typical:

1722 W

1766 W

Maximum:

3132 W

3216 W

Steady state current

Power consumption

MicroVAX Site Preparation

Electrical Requirements for MicroVAX Systems
in the H9644 Cabinet
For 120 V operation, MicroVAX systems in the H9644 cabinet must use a
NEMA L5-30R ac electrical receptacle rated at 30 amperes.

These systems

require a CSA 12-3 type power cord.
For 240 V operation, MicroVAX systems in the H9644 cabinet must use a

NEMA L6-15R ac electrical receptacle rated at 15 amperes.

Contact your

DIGITAL sales representative for information on any restrictions that may

apply to 240 V, 60 Hz systems.

Power cords for 240 V operation in the

H9644 cabinet are the same as those for the H9642 cabinet. See Table 12 for
a list of power cord numbers.

Table 14 lists the electrical requirements for MicroVAX 3600 and VAXserver
3600/3602 systems that use one H9644 cabinet.

Tables 15 and 16 list the

electrical requirements for a second H9644 cabinet in a MicroVAX 3600 and
VAXserver 3600/3602 system, respectively.

Table 14:

Electrical

Requirements for MicroVAX 3600 and

VAXserver 3600/3602 Systems in the H9644 Cabinet
Nominal AC Voltage —

101 Vac

120 Vac

240 Vac

Voltage range

90 to 110 Vac

90 to 128 Vac

184 to 256 Vac

Power source phase

Single

Nominal frequency

50 to 60 Hz

Frequency range

47 to 6? Hz

47 to 63 Hz

At nominal voltage

285 A

24.0 A

12.0 A

At typical voltage

12.0 A

113 A

59 A

For 10 seconds

57 A

48 A

24 A

For 50 seconds

36 A

30 A

15 A

Not specified

1090 W

1140 W

Maximum steady state current

Startup current

Typical power consumption

MicroVAX Site Preparation

Table 15:

Electrical Requirements for Auxiliary Cabinet Used
with MicroVAX 3600 Systems

Nominal AC Voltage —>

101 Vac

120 Vac

240 Vac

Voltage range

Not used

90 to 128 Vac

184 to 256 Vac

Power source phase

Not used

Single

Nominal frequency

Not used

50 to 60 Hz

Frequency range

Not used

47 to 63 Hz

At typical voltage

Not used

8.0 A

4.1 A

At maximum voltage

Not used

8.3 A

4.6 A

Not used

44.0 A

33.0 A

Typical

Not used

620 W

Maximum

Not used

960 W

Maximum steady state current

Startup

current

(150

millisec-

onds)
Power consumption

MicroVAX Site Preparation

Table 16:

Electrical Requirements for Auxiliary Cabmet Used

with VAXserver 3602 Systems
Nominal AC Voltage —

101 Vac

120 Vac

240 Vac

Voltage range

90 to 110 Vac

90 to 128 Vac

184 to 256 Vac

Power source phase

Single

Nominal frequency

50 to 60 Hz

Frequency range

47 to 63 Hz

cur-

10.2 A

8.6 A

4.7 A

Maximum available current for

28.5 A

240 A

12.0 A

57.0 A

48.0 A

24.0 A

Typical

670 W

Maximum limit of the power

2880 W

Maximum

steady

state

rent at typical voltage

cabinet

Startup current (10 seconds)
Power consumption

controller

MicroVAX Site Preparation

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