INSTRUCTION MANUAL
RA 59
RACK ADAPTER
KEPCO INC.
An ISO 9001 Company.
RACK ADAPTER
ORDER NO. REV. NO.
IMPORTANT NOTES:
1) This manual is valid for the following Model and associated serial numbers:
MODEL SERIAL NO. REV. NO.
2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial numbers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Documentation Office in New York, (718) 461-7000, requesting the correct revision for your particular model and serial number.
3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
MODEL
RA 59
KEPCO®
©2013, KEPCO, INC
P/N 243-0910c
KEPCO, INC. ! 131-38 SANFORD AVENUE ! FLUSHING, NY. 11355 U.S.A. ! TEL (718) 461-7000 ! FAX (718) 767-1102
email: hq@kepcopower.com
! World Wide Web: http://www.kepcopower.com
THE POWER SUPPLIER™
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope of Manual ..................................................................................................................................... 1-1
1.2 General Description................................................................................................................................. 1-1
1.3 Accessories ............................................................................................................................................. 1-2
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection ....................................................................................................................... 2-1
2.2 Rack Adapter Keying Instructions ........................................................................................................... 2-1
2.2.1 Establishing Key Positions................................................................................................................. 2-1
2.3 Terminations............................................................................................................................................ 2-2
2.4 Source Power Requirements .................................................................................................................. 2-2
2.5 Cooling .................................................................................................................................................... 2-2
2.6 Installation ............................................................................................................................................... 2-3
2.7 Wiring Instructions................................................................................................................................... 2-3
2.7.1 Safety Grounding............................................................................................................................... 2-3
2.7.2 Source Power Connections ............................................................................................................... 2-3
2.7.3 Source Power Configurations............................................................................................................ 2-4
2.7.3.1 A-C Source Power, Single Phase ................................................................................................ 2-4
2.7.3.2 D-C Source Power....................................................................................................................... 2-5
2.7.4 Control Signal Connections ............................................................................................................... 2-5
2.7.5 Output Load Connections.................................................................................................................. 2-5
2.7.5.1 Parallel/Redundant Operation...................................................................................................... 2-5
2.7.5.2 Series/Independent Operation ..................................................................................................... 2-5
2.7.5.3 Mixed Operation........................................................................................................................... 2-5
2.8 Bus Bar Link Removal/Installation........................................................................................................... 2-6
2.9 Shipping .................................................................................................................................................. 2-6
RA 59 051313 i
LIST OF FIGURES
FIGURE TITLE PAGE
1-1 RA 59 Rack Adapter...................................................................................................................................... iv
1-2 Mechanical Outline Drawing, RA 59 Rack Adapter.................................................................................... 1-3
2-1 Key Pin Location ........................................................................................................................................ 2-1
2-2 Rear Panel Connections ............................................................................................................................ 2-2
2-3 Single Phase A-C.D-C Source Power Wiring............................................................................................. 2-4
2-4 Bus Bar Link Removal/Installation.............................................................................................................. 2-7
ii RA 59 051313
LIST OF TABLES
TABLE TITLE PAGE
1-1 Accessories ................................................................................................................................................1-2
2-1 Equipment Supplied ....................................................................................................................................2-1
RA 59 051313 iii
FIGURE 1-1. RA 59 RACK ADAPTER
iv RA 59 051313
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation and operation of the RA 59 plug-in rack
adapter (Figure 1-1) used with HSP Series power supplies, manufactured by Kepco, Inc., Flushing, New York, U.S.A.
SECTION 1 - INTRODUCTION
1.2 GENERAL DESCRIPTION
FIGURE 1-1.
The Kepco RA 59 rack adapter is specifically designed for the installation of Kepco HSP Series
Power Supplies into 24.inch EIA standard equipment racks. Each rack adapter accommodates
from one to four HSP power supplies. An internal plate assembly mounts connectors which
interface directly with the power and signal connectors of HSP series power supplies, permitting
pluggable insertion and extraction, while a separate external rear panel contains the fixed power
and signal connections. Separate source power, signal, and load terminations are provided for
each of the four power supply mounting positions. Internal power output configurations differ for
the three models as follows:
Output power connections for all four positions may be connected internally via removable
shorting bus bars. These allow the user to customize each position of the rack adapter for
series, parallel, or independent operation. The unit is shipped with all four positions configured
for independent operation (factory default).
External dimensions and all mechanical and electrical specifications are contained in the outline
drawing: Figure 1-2.
Each rack adapter occupies 5.22 inches (132.5 mm) of vertical space and has a maximum
depth protrusion of 20.75 inches as measured from the mounting surface of the “ear” brackets.
The rack adapter is shipped with mounting ears for flush mounting in EIA 24-inch equipment
racks. The rack adapter can be fitted with optional blank tiller panels in both l/4 and l/2 rack
dimensions if the full complement of four power supplies is not utilized.
RA 59 051313 1-1
1.3 ACCESSORIES
Accessories are listed in Table 1-1. See Table 2-1 for Equipment Supplied.
TABLE 1-1. ACCESSORIES
ACCESSORY PART NUMBER USE
CONNECTORS
FILLER PANELS
ALUMINUM FEET 158-0004 Aluminum feet attach to bottom of rack adapter (set of four).
SCREW 101-0215 Used to attach aluminum feet to rack adapter.
BUS BAR LINK KIT 219-0429
SCREW 101-0456 Pan head, phillips, self-forming, 6-32 x 1/4 used to attach bus bar links.
SAFETY COVER, DC ** 137-0135 Covers DC output power connections for one slot.
SUPPORT BRACKET (REAR) 128-1909
SCREW, THREAD FORMING
6-32 X 3/8"
LOCKWASHER,
INTERNAL TOOTH
** If AC Input safety cover required, contact Kepco.
142-0422 I/O connector mating plug.
108-0294 I/O connector backshell (includes retention screws).
RFP 60-1 Covers 1/4 of front panel.
RFP 60-2 Covers 1/2 of front panel.
Used to connect + and – terminals of adjacent power supplies for parallel
configurations (two links per kit). See PAR. 2.8 and Figure 2-4 for details.
Auxiliary support when rack adapter fully populated with 4 power supplies.
Two (2) brackets required for each rack adapter. Mount each bracket
using two (2) 6-32 X 3/8" thread-forming screws (Kepco p/n 101-0456)
and two (2) internal tooth lock washers (Kepco p/n 103-0015), see Figure
1-2.
101-0456 Two (2) screws required to mount each rear support bracket.
103-0015 Two (2) lockwashers required to mount each rear support bracket.
1-2 RA 59 051313
FIGURE 1-2. MECHANICAL OUTLINE DRAWING, RA 59 RACK ADAPTER
RA 59 051313 1-3/(1-4 Blank)
SECTION 2 - INSTALLATION
2.1 UNPACKING AND INSPECTION
This equipment has been thoroughly inspected and tested prior to packing and is ready for
operation. After careful unpacking, inspect for shipping damage before attempting to operate. If
any indication of damage is found, file an immediate claim with the responsible transport service. See Table 2-1 for a list of equipment supplied.
TABLE 2-1. EQUIPMENT SUPPLIED
ITEM QUANTITY PART NUMBER
Rack Adapter 1 RA 59
I/O Connector (Mating) 4 142-0422
Instruction Manual 1 243-0910
Split Lockwasher * 8 103-0005
Hex Nut 5/16-18 * 8 102-0105
* Mounting hardware is assembled to output studs.
2.2 RACK ADAPTER KEYING INSTRUCTIONS
The RA 59 rack adapter incorporates a keying mechanism to prevent accidental insertion of the
incorrect model HSP power supply into any position. The HSP power supplies are keyed by
voltage at the factory. The keying mechanism will prevent engagement of any of the HSP power
supply’s connectors with those on the rack adapter’s intermediate plate unless the key and keyway align. The user can configure each power supply position of the rack adapter for the desired
voltage in the desired position; the factory default keying is for the 5 volt HSP module (see Figure 2-1).
2.2.1 ESTABLISHING KEY POSITIONS
The key pins (Kepco PIN 108-0079) used for module keying are located on the intermediate
plate (see Figure 2-1) and are accessed through the front of the rack adapter. To alter the keying
of any position, simply unscrew the key pin from the intermediate plate using a 1/4” nut driver or
deep socket, reposition key pin at new location and retighten. HSP module keying is identified in
Figure 2-1 and in the HSP operator’s manual. DO NOT ALTER THE KEYING AT THE POWER
SUPPLY!
FIGURE 2-1. KEY PIN LOCATION
RA 59 051313 2-1
2.3 TERMINATIONS
All input, output and control terminations are located on the rear panel of the rack adapter (see
Figure 2-2). Other than module keying (Para.2.2), no adjustments or alignments are required.
FIGURE 2-2. REAR PANEL CONNECTIONS
2.4 SOURCE POWER REQUIREMENTS
When used in conjunction with Kepco HSP series power supplies, this rack adapter can be
operated from single-phase a-c source power without adjustment or modification. Voltage and
frequency limits are determined by the source power rating of the HSP power supplies. Operation from d-c or three-phase a-c power is also available: please contact factory.
2.5 COOLING
The HSP power supplies mounted within the rack adapter are maintained within their operating
temperature range by means of internal cooling fans. ALL INLET AND EXHAUST OPENINGS
AROUND THE RACK ADAPTER CASE MUST BE KEPT CLEAR OF OBSTRUCTION TO
ENSURE PROPER AIR ENTRY AND EXHAUST. Care must be taken that the ambient temperature, which is the temperature of the air immediately surrounding the rack adapter, does not
rise above the specified limits for the operating load conditions of the installed HSP power supplies. Kepco recommends providing additional space above and below the rack adapter where
possible when the rack adapter is fully populated.
2-2 RA 59 051313
2.6 INSTALLATION (Refer to “Mechanical Outline Drawing,” Figure 1-2.)
The RA 59 rack adapter is designed for rack-mounted applications, The rack adapter will mount
directly to EIA standard 24” racks. Other fixed mounting applications are possible; consult factory for details.
When used in fixed rack-mounted applications, the rack adapter is attached to the rack via the
two mounting ears. Two screws are required per mounting ear for proper support. Kepco recommends using auxiliary support when the rack adapter is fully populated with four HSP power
supplies to accommodate the weight of the power supplies and associated load cables: either a
shelf, rear support brackets or side support brackets (see Table 1-1).
For all installations provide adequate clearance around air inlet and exhaust locations and
ensure that the temperature immediately surrounding the unit, and especially near the air inlets,
does not exceed the maximum specified ambient temperature for the operating conditions of the
installed power supplies.
CAUTION
WHEREVER POSSIBLE RACK ADAPTER SHOULD BE MOUNTED BEFORE INSTALLING
POWER SUPPLIES TO AVOID DlSTORTlON OF THE RACK ADAPTER (INSTALL POPULATED RACK ADAPTER ONLY IF BOTTOM OF RACK ADAPTER IS FULLY SUPPORTED).
FAILURE TO OBSERVE THIS CAUTION MAY RESULT IN MISALIGNMENT OF THE POWER
SUPPLIES WITH THE RACK ADAPTER.
2.7 WIRING INSTRUCTIONS
Interconnections between an a-c power source and a stabilized power supply, and between the
power supply and its load are as critical as the interface between other types of electronic equipment. If optimum performance is expected, certain rules for the interconnection of source,
power supply and load must be observed by the user. These rules are described in detail in the
following paragraphs and in the operating instructions for HSP Series power supplies.
2.7.1 SAFETY GROUNDING
Local, national and international safety rules dictate the grounding of the metal cover and case
of any instrument connected to the a-c power source, when such grounding is an intrinsic part of
the safety aspect of the instrument. The instructions below suggest wiring methods which comply with these safety requirements; however, in the event that the specific installation for the
power system involves differences with the recommended wiring, it is the customer's responsibility to ensure that all applicable electric codes for safety grounding requirements are met.
2.7.2 SOURCE POWER CONNECTIONS
The rear panel of the RA 59 rack adapter (Figure 2-2) includes nine terminal blocks to allow for
individual connection of single-phase a-c and d-c input power to each position, These terminal
blocks are labeled Ll, Nl, L2, N2, L3, N3, L4, N4, and G. Each terminal block will accommodate
up to #6 AWG (16mm
2
) or equivalent conductor size. Their functions are as follows:
• Terminal G (Ground) is the safety ground connection for the rack adapter, and is con-
nected to the rack adapter chassis as well as to the safety ground terminal of the source
power connector of each of the three power supply mounting positions. Regardless of
the type Of source power provided, Terminal G must be connected to safety ground in
RA 59 051313 2-3
order to ensure proper grounding of the HSP power supplies when installed. The conductor used to connect Terminal G to safety ground must be sized to support the total
fault current of all of the power supplies installed in the rack adapter: for HSP series
power supplies, the ground fault current rating is 20 amperes per power supply. Consult
local electric codes for the proper wire size to carry the required fault current.
• Terminal pairs LI/NI, L2/N2, L3/N3, L4/N4 are connected to the high-side and low-side
contacts of the source power connectors for each of the three power supply mounting
positions (1, 2, 3 and 4) of the rack adapter (see Figure 2-2). Each terminal pair (Lx/Nx)
is isolated from the remaining two pairs, facilitating redundant source power connections
if desired. The conductor used to connect terminals Lx and Nx to source power must be
sized for the 16 ampere maximum source current drawn by HSP Series power supplies;
Kepco recommends #I4 AWG (2.5mm2) or equivalent minimum conductor size to support this current.
2.7.3 SOURCE POWER CONFIGURATIONS
The following standard wiring configurations are recommended by Kepco as being compliant
with national and international safety standards. It is the user’s responsibility to ensure that all
applicable local electric codes are met. The minimum and maximum limits for source power voltage are defined in HSP series power supply specifications.
UNDER NO CIRCUMSTANCES SHOULD THE STEADY-STATE SOURCE VOLTAGE
APPLIED ACROSS ANY Lx/Nx PAIR EXCEED 277V rms!
CAUTION
2.7.3.1 A-C SOURCE POWER, SINGLE PHASE
For single-phase a-c source power, connect Terminal G of the rack adapter to source power
safety ground; then connect a separate wire pair from the power source to each Lx/Nx terminal
block pair to be populated by an HSP power supply (see Figure 2.3).
FIGURE 2-3. SINGLE PHASE A-C.D-C SOURCE POWER WIRING
If desired, a single wire pair can be run from the power source to any Lx/Nx pair, with jumpers
connecting the remaining Lx/Nx pairs to the first pair; however, the wires must be adequately
rated to support the total current being delivered through them. For the example shown in Figure 2-3, the jumper wires are sized for 16 amps, but the source wires must be sized for 4 times
16 amps, or 64 amps.
2-4 RA 59 051313
2.7.3.2 D-C SOURCE POWER
For d-c source power, wire the rack adapter in accordance with the instructions for single-phase
a-c power per Para. 2.7.3.1. Contact Kepco Applications Engineering for additional restrictions
imposed by d-c source power.
2.7.4 CONTROL SIGNAL CONNECTIONS
Access to the control signal (l/O) connector for each HSP power supply is provided via the four
37.pin D-subminiature connectors on the rear panel of the rack adapter (see Figure 2-2). Four
mating connectors (Kepco PN 142-0422) are provided in a plastic bag. These connectors are
simply extensions of the identical connectors located on the HSP power supplies. Consult the
HSP operator’s manual for instructions on wiring and use of these control lines.
2.7.5 OUTPUT LOAD CONNECTIONS
Load connections to the rack adapter is achieved via the stud pairs located on the rear panel
directly behind each mounting position (see Figure 2-2). Required hardware for attaching output cables are assembled to the output studs. The RA 59 rack adapter employs a modular bus
bar system to permit a variety of load configurations; it is shipped with all four positions configured for independent operation. The following sections describe additional output bus bar configurations available with the RA 59 rack adapter. Additional information regarding these and
other load interface requirements are contained in the HSP operators manual.
NOTE!
REGARDLESS OF OUTPUT CONFIGURATION, OUTPUT SENSE
LINES MUST BE PROPERLY CONNECTED FOR OPERATION
(REFER TO HSP OPERATOR’S MANUAL).
2.7.5.1 PARALLEL/REDUNDANT OPERATION
Adjacent positions of the RA 59 rack adapter can be reconfigured for parallel/redundant operation by installing optional bus bar links as shown in Figure 2.4. Load wiring is attached to the
rack adapter at the output studs. Although load wiring can be attached to any single position,
Kepco strongly recommends distributing the load interface evenly among the populated power
supply positions to minimize load sharing error; in no case should load current drawn from any
one terminal exceed 300 Amperes. All four load connections must be used when the 3.3 volt
and 5 volt modules are used. Consult HSP operators manual for additional information regarding parallel/ redundant load operation.
2.7.5.2 SERIES/INDEPENDENT OPERATION
The RA 59 rack adapter can be configured for series operation of HSP power supplies by installing a jumper cable from the negative bus bar of one independent position to the positive bus bar
of the adjacent independent position for as many positions as required. Consult the HSP operators manual for additional information regarding series operation; contact Kepco Applications
Engineering for additional information.
2.7.5.3 MIXED OPERATION
The design of the RA 59 permits the user to configure HSP power supplies for almost any combination of independent, series and parallel operation, both within a single rack adapter and
between different RA 59 rack adapters, within the limits of the HSP operation envelope. The
RA 59 051313 2-5
user must ensure that the requirements for each configuration stated above are met. If any
questions or problems arise, the user is encouraged to contact Kepco Applications Engineering
group for technical assistance.
2.8 BUS BAR LINK REMOVAL/INSTALLATION REFER TO FIGURE 2-4
WARNING
BE SURE ALL POWER IS DISCONNECTED FROM
RACK ADAPTER BEFORE DISASSEMBLY.
Two bus bar links and the associated attaching hardware included in Kit 219-0429 (see Figure
2-4) are used to connect the (+) and (–) terminals of an adjacent pair of power supplies.
NOTE: To connect all four power supplies of the RA 59 rack adapter for parallel/redundant
operation, three Bus Bar Link Kits, P/N 219-0429, are required.
a. Remove eight screws (2) and eight lockwashers (1) securing the four l/O connector assem-
blies (10) to the chassis (9).
b. Remove 12 screws (8) from the top, bottom, and sides of chassis (9). Carefully separate
backplate assembly (3) from chassis (9) and swing down (with wires attached) to expose bus
bar links (4).
c. To install a bus bar link (4), use four screws (7), lockwashers (6), and flat washers (5) to
attach bus bar link (4) to backplate assembly (3).
d. To remove a bus bar link (4), remove four screws (7), lockwashers (6), and flat washers (5)
securing bus bar link (4) to backplate assembly (3).
e. Assemble backplate assembly (3) to chassis (9) (taking care that wires are not crimped)
using eight screws (2) and lockwashers (1).
f. Secure backplate assembly (3) to chassis (9) using 12 screws (8)
2.9 SHIPPING
Shipping of the rack adapter is recommended only after the HSP power supplies have been
removed from the rack adapter. Contact Kepco Applications Engineering if further assistance is
required.
2-6 RA 59 051313
KEY TO Figure 2-4:
1. Lockwasher, Internal tooth, #4 - P/N 103-0014 (2 per I/O connector)
2. Screw (2 per I/O connector - part of Jackpost Kit P/N 108-0203
3. Backplate Assembly
4. ** Bus Bar Link - P/N 172-0513 (2)
5. ** Flat washer, #6 - P/N 103-0100 (4 per bus bar link)
6. ** Lockwasher, Split, #6 - P/N 103-0066 (4 per bus bar link)
7. ** Screw, 6-32 x 1/4” PHPH, self-forming, P/N101-0456 (4 per bus bar link)
8. Screw, 6-32 x 5/16” FHPO - P/N 101-0408 (12)
9. Chassis
10. I/O Connector Assembly
** Items included in KIT 219-0429
NOTE: Quantities are indicated in parentheses.
FIGURE 2-4. BUS BAR LINK REMOVAL/INSTALLATION
RA 59 051313 2-7/(2-8 Blank)
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