KEPCO RA 19-1U User manual

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 num-
bers. 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 Docu-
mentation Office in New York, [phone], requesting the correct revision for your par-
ticular 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.
KEPCO®
THE POWER SUPPLIER™
MODEL
INSTRUCTION MANUAL
ORDER NO. REV. NO.
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL [phone] FAX [phone]
email: [e-mail] World Wide Web: www.kepcopower.com
KEPCO INC.
An ISO 9001 Company.
©2023, KEPCO, INC
P/N 243-1025-R4
RA 19-1U
RACK ADAPTER
HOT SWAP RACK ADAPTER FOR 1U HSF SERIES POWER SUPPLIES
RA 19-1U
RACK ADAPTER

RA 19-1U 041323 i
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope of Manual ..................................................................................................................................... 1-1
1.2 General Description................................................................................................................................. 1-1
1.3 Mechanical.............................................................................................................................................. 1-1
1.4 Electrical.................................................................................................................................................. 1-1
1.5 Safety...................................................................................................................................................... 1-2
1.6 RoHS Compliance................................................................................................................................... 1-2
1.7 Accessories............................................................................................................................................. 1-3
1.8 Options.................................................................................................................................................... 1-3
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection....................................................................................................................... 2-1
2.2 Configuring the Rack Adapter................................................................................................................. 2-1
2.3 Rack Adapter Keying Instructions ........................................................................................................... 2-1
2.3.1 Establishing Key Positions................................................................................................................. 2-2
2.4 Slot Configuration.................................................................................................................................... 2-2
2.4.1 Independent Operation...................................................................................................................... 2-3
2.4.1.1 Independent Operation - Local Sensing Using Rear Panel DIP switches ................................... 2-4
2.4.1.2 Independent Operation - Local Sensing Using External Wiring................................................... 2-5
2.4.1.3 Independent Operation - Remote Sensing .................................................................................. 2-6
2.4.2 Parallel Operation.............................................................................................................................. 2-7
2.4.2.1 Parallel DC OUTPUT Connections.............................................................................................. 2-7
2.4.2.2 Parallel Current Share Connections ............................................................................................ 2-7
2.4.2.2.1 Parallel Current Share - Rear Panel DIP Switches....................................................................2-8
2.4.2.2.2 Parallel Current Share - External Wiring....................................................................................2-9
2.4.2.3 Sense Connections for Parallel Configurations ........................................................................... 2-10
2.4.2.3.1 Parallel Configuration Using DIP Switches to Connect Sense Lines in
Parallel and External Wires to Configure Local Sensing........................................................2-11
2.4.2.3.2 Parallel Configurations using External Wires to Connect Sense Lines
in Parallel and External Wires to Configure Local Sensing....................................................2-12
2.4.2.3.3 Parallel Configurations using DIP Switches to Connect Sense Lines in
Parallel and External Wires to Configure Remote Sensing....................................................2-13
2.4.2.3.4 Parallel Configurations using External Wires to Connect Sense Lines
in Parallel and External Wires to Configure Remote Sensing................................................2-14
2.4.3 Series Operation................................................................................................................................ 2-15
2.4.4 Alarm Configurations......................................................................................................................... 2-17
2.4.4.1 N.O. Alarm Line (Close on Failure).............................................................................................. 2-17
2.4.4.1.1 Close on Failure Using Rear Panel Dip Switches......................................................................2-17
2.4.4.1.2 Close on Failure Using External Wiring at I/O Mating Connector..............................................2-19
2.4.4.2 N.C. Alarm Line (Open on Failure) .............................................................................................. 2-20
2.4.4.2.1 Open on Failure Using Rear Panel Dip Switches......................................................................2-20
2.4.4.2.2 Open on Failure Using External Wiring of I/O Mating Connector...............................................2-21
2.5 Current Monitoring (-1URC and -1URY Models only) ............................................................................. 2-22
2.6 Remote On-Off (-1URX and -1URY Models only)................................................................................... 2-23
2.7 Terminations............................................................................................................................................ 2-24
2.8 Cooling.................................................................................................................................................... 2-24
2.9 Installation............................................................................................................................................... 2-24
2.9.1 Installing 1U HSF Power Supplies..................................................................................................... 2-24
2.10 Wiring Instructions................................................................................................................................... 2-24

ii RA 19-1U 041323
TABLE OF CONTENTS
SECTION PAGE
2.10.1 Safety Grounding.............................................................................................................................. 2-25
2.10.2 Source Power Connections .............................................................................................................. 2-25
2.10.2.1 EMI Compliance.......................................................................................................................... 2-26
2.10.3 Control Signal Connections .............................................................................................................. 2-26
2.10.4 Output Load Connections................................................................................................................. 2-26
2.10.4.1 Reducing Ripple and Noise......................................................................................................... 2-26
2.10.4.2 Parallel/Redundant Operation..................................................................................................... 2-28
2.10.4.3 Series/Independent Operation.................................................................................................... 2-28
2.10.4.4 Mixed Operation.......................................................................................................................... 2-28
2.11 Removing/Replacing 1U HSF Power Supplies....................................................................................... 2-28
2.12 Shipping.................................................................................................................................................. 2-28

LIST OF FIGURES
FIGURE TITLE PAGE
RA 19-1U 041323 iii/(iv Blank)
1-1 RA 19-1U Rack Adapter ............................................................................................................................... vi
1-2 RA 19-1U Rack Adapter with 1U HSF Power Supplies Installed................................................................ 1-1
1-3 RA 19-1U Interconnections, Simplified Diagram......................................................................................... 1-2
1-4 RA 19-1U Rack Adapter Rear Panel .......................................................................................................... 1-3
1-5 Mechanical Outline Drawing, RA 19-1U Rack Adapter............................................................................... 1-4
1-6 RA 19-1U Schematic Diagram.................................................................................................................... 1-7
2-1 RA 19-1U Rack Adapter Keying ................................................................................................................. 2-2
2-2 Independent Operation, Local Sensing for PS1 and PS2 using
Rear Panel DIP switches, Simplified Diagram ........................................................................................ 2-4
2-3 Independent Operation, Local Sensing for PS1 and PS2 using
External Jumpers at I/O Mating Connector, Simplified Diagram............................................................. 2-5
2-4 Independent Operation, Remote Sensing for PS1 and PS2 using
External Wiring at I/O Mating Connector, Simplified Diagram................................................................. 2-6
2-5 Parallel Outputs Using Rear Panel DIP Switches to Parallel sense
lines and current share, PS1 and PS2 (Typical), Simplified Diagram..................................................... 2-8
2-6 Parallel Outputs Using External Wiring, Typical Configuration, Simplified Diagram................................... 2-9
2-7 Typical Parallel Connections Using External Wires for
Local Sensing and DIP switches to Parallel Sense Wires....................................................................... 2-11
2-8 Typical Parallel Connections using External Wires for Local Sensing
and I/O Mating Connector Jumpers to Parallel Sense Wires................................................................... 2-12
2-9 Typical Parallel Connections, Remote Sensing using DIP Switches to Parallel Sense Wires.................... 2-13
2-10 Typical Parallel Connections, Remote Sensing using I/O Mating
Connector Jumpers to Parallel Sense Wires........................................................................................... 2-14
2-11 Series Configuration, Simplified Diagram ................................................................................................... 2-16
2-12 Close on Failure Alarm Configuration Using Rear Panel Dip Switches, Simplified Diagram...................... 2-18
2-13 Close on Failure Alarm Configuration Using External Wiring at I/O Mating
Connector, Simplified Diagram................................................................................................................. 2-19
2-14 Open on Failure Alarm Configuration Using Rear Panel Dip Switches, Simplified Diagram ...................... 2-20
2-15 Open on Failure Alarm Configuration Using External Wiring
at I/O Mating Connector, Simplified Diagram........................................................................................... 2-21
2-16 Using Current Monitoring (Typical), -1URC and -1URY Models only ......................................................... 2-22
2-17 Using Remote On-Off (Typical), -1URX and -1URY Models only............................................................... 2-23
2-18 Ripple and Noise Measurement Setup Diagram......................................................................................... 2-27

RA 19-1U 041323 v
LIST OF TABLES
TABLE TITLE PAGE
1-1 Compatible 1U HSF Power Supplies ..........................................................................................................1-3
1-2 RA 19-1U Accessories ................................................................................................................................1-3
2-1 Equipment Supplied ....................................................................................................................................2-1
2-2 Rear Panel DIP Switch Functions ...............................................................................................................2-3
2-3 Sense Resistor Values ................................................................................................................................2-22

vi RA 19-1U 041323
FIGURE 1-1. RA 19-1U RACK ADAPTER
SLOT2SLOT3SLOT4
SLOT1
3042495

RA 19-1U 041323 1-1
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation and operation of the RA 19-1U plug-in rack
adapter (Figure 1-1) used with 1U HSF Series power supplies, manufactured by Kepco, Inc.,
Flushing, New York, U.S.A. Unless otherwise noted, 1U HSF refers to the following models -1U,
-1UR, -1URT, -1URC, -1URX and -1URY.
FIGURE 1-1.
1.2 GENERAL DESCRIPTION
Kepco RA 19-1U rack adapters are specifically designed for the installation of Kepco 1U HSF
Series Power Supplies into 19-inch EIA-RS-310D standard equipment racks. The RA 19-1U
Model accommodates up to four 50W, 100W or 150W 1U HSF power supplies (Figure 1-2).
The rack adapter is user-configurable for parallel, series, or independent power supply opera-
tion. Up to four identical units may connected in parallel. Multiple rack adapters may be paral-
leled for additional current capacity. Forced current sharing and OR’ing diodes for N+1
redundancy are built into the 1U HSF power supplies. Redundant a-c inputs are provided to
deliver independent source power to each power supply in a redundant pair. User-configurable
keying ensures that only the correct power supply can be installed in a keyed slot.
FIGURE 1-2. RA 19-1U RACK ADAPTER WITH 1U HSF POWER SUPPLIES INSTALLED
1.3 MECHANICAL
The rack adapter is equipped with mounting ears for mounting in EIA-RS-310D standard 19-
inch racks. For mounting in non-standard racks, consult Kepco Applications Engineering. The
rack adapter is not configured for slides. Optional blank filler panels (see Table 1-2) are avail-
able if the full complement of power supplies is not utilized.
Mechanical dimensions, material, and finish of the RA 19-1U Rack Adapter is provided in Figure
1-5.
1.4 ELECTRICAL
An internal PCB back plate mounts connectors which interface directly with the power and sig-
nal connectors of 1U HSF Series power supplies, permitting hot swappable insertion and extrac-
tion. The other side of the back plate assembly, available from the rear, contains the fixed power
and signal connections. Figure 1-3 illustrates the interconnections provided by the RA 19-1U
Rack Adapter. Dual input terminal blocks on the back plate assembly (Figure 1-4) distribute
input power to each of the four powers supplies. Figure 1-6 is a schematic diagram of the RA
19-1U rack Adapter.
3042496
PS1 PS2 PS3 PS4

1-2 RA 19-1U 041323
All mechanical and electrical specifications are contained in the mechanical outline drawing:
Figure 1-5. See Figure 1-6 for electrical schematic diagram.
FIGURE 1-3. RA 19-1U INTERCONNECTIONS, SIMPLIFIED DIAGRAM
1.5 SAFETY
Certified to UL 60950-1, 1st Edition, 2007-10-31 (Information Technology Equipment - Safety -
Part 1: General Requirements) and CSA C22.2 No. 60950-1-03, 1st Edition, 2006-07 (Informa-
tion Technology Equipment - Safety - Part 1: General Requirements). Units are CE marked per
the Low Voltage Directive (LVD), 2006/95/EC (LVD) and 2004/108/EC (EMC). [The standards
do not apply with either DC input operation or with a-c input frequency above 66Hz.]
1.6 RoHS COMPLIANCE
RoHS 5 of 6 compliant to EU directive 2011/65/EU if used as component within telecommunica-
tion systems.
I/O CONNECTOR,
PS3, PS4 I/O CONNECTOR,
PS1, PS2

RA 19-1U 041323 1-3
1.7 ACCESSORIES
Accessories for RA 19-1U Rack Adapters are listed in Table 1-2; see also Table 2-1 for addi-
tional accessories supplied with the unit.
1.8 OPTIONS
Table 1-1 below describes the standard model options available with the RA 19-1U rack
adapter. For non-standard options, contact Kepco Applications Engineering for assistance.
FIGURE 1-4. RA 19-1U RACK ADAPTER REAR PANEL
TABLE 1-1. COMPATIBLE 1U HSF POWER SUPPLIES
RA 19-1U RACK ADAPTER SLOT COMPATIBLE POWER SUPPLIES
1, 2, 3, 4 HSF-1UR 50W, 100W and 150W Series
HSF-1U 50W and 100W Series
NOTES: 1. Contact Kepco Applications Engineering for assistance with non-standard configurations.
2. RA 19-1U is compatible with HSF-1U, -1UR, -1URC, -1URX, and -1URY models.
TABLE 1-2. RA 19-1U ACCESSORIES
ACCESSORY PART NUMBER USE
Screw, Thread forming
(4-40, 0.75 in. long, PHPH) 101-0480 Module Keying. eight (8) supplied with unit. Installed by user (see PAR.
2.3).
Cable Clamp, Nylon, with
release lever 108-0422 Support weight of AC input and DC output cables. Four (4) supplied
with unit to be installed by user as desired (see Figure 1-4)
Line cord 118-0506 Supply 115 V a-c source power to rack adapter. Two (2) supplied with
unit.
Connector 142-0449 Mating Connector for I/O connector. Two (2) supplied with unit.
Filler Panel (1/4 Rack) RFP 19-1U-14 Cover one unused 1/4 rack slot.
Filler Panel (1/2 Rack) RFP 19-1U-12 Cover two unused 1/4 rack slots.
3042498
SOURCE POWER
INPUT FOR
PS2 AND PS4
I/O CONNECTOR,
PS3, PS4 I/O CONNECTOR,
PS1, PS2
PS4 KEYING
DIP 4 DC OUTPUT
PS3, PS4 DIP 3 DIP 2
SOURCE POWER
INPUT FOR
PS1 AND PS3
DIP 1
DC OUTPUT
PS1, PS2
PS3 KEYING PS2 KEYING PS1 KEYING
CABLE CLAMP*
AC INPUT
PS2 AND PS4
CABLE CLAMP*
DC OUTPUT
PS2 AND PS4
CABLE CLAMP*
AC INPUT
PS1 AND PS3
CABLE CLAMP*
DC OUTPUT
PS1 AND PS2
* CABLE CLAMPS ARE USER
INSTALLED.

1-4 RA 19-1U 041323
FIGURE 1-5. MECHANICAL OUTLINE DRAWING, RA 19-1U RACK ADAPTER (SHEET 1 OF 2)
0.243 [6.2]
0.453 [11.5] 0.641 [16.3]
19.000 [482.6]
0.830 [21.1]
0.031 [0.8]
3.037 [77.1]
0.438 [11.1]
1.218 [30.9]
4.665 [118.5]
12.225 [310.5]
0.247 [6.3]
1.130 [28.7]
0.250 [6.4]
0.582 [14.8]
3.840 [97.5]
0.250 [6.4]
1.877 [47.7]
0.812 [20.6]
0.250 [6.4]
1.465 [37.2]
0.812 [20.6]
4.016 [102.0]
0.511 [13.0]
NOTES:
1. MATERIAL:
-CHASSIS,COVER,BACKPLATE 0.064" THK ALUM. 5052-H32
-PCB 0.063" THK. FR-4
2. FINISH
-IRIDITE GOLD ON ALL METAL PARTS.
-BACKPLATE SILKSCREEN BLACK INK.
3. IF KEYING IS REQUIRED USE THE INCLUDED SELF FORMING SCREWS 4-40x3/4" (1010480) AS PER FIGURE 2-1.
MAX. TORQUE 5 lbxin (0.6 Nxm).
4. MODULE ARE SECURED FOR HOT SWAP OPERATION WITH CAPTIVE PANEL SCREWS 4-40.
MAX. TORQUE 2 lbxin (0.23 Nxm).
5. FOR SHIPPING OR HIGH VIBRATION AND SHOCK ENVIRONMENTS,MODULES CAN EACH BE SECURED
WITH ONE FLAT HEAD SCREW 100~ , 6-32x1/4" MIN. to 1/2" MAX. LONG.(KEPCO P/N 1010408 ) OR SIMILAR.
THE SCREW WILL BE INSTALLED THRU THE COUNTERSUNK HOLES IN THE BOTTOM PAN.
0.250 [6.4]
0.311 [7.9]
0.250 [6.4]
0.444 [11.3]
1.735 [44.1]
1.250 [31.8]
0.250 [6.4]
3010247
1.218 [30.9]
1.166 [29.6]
1.009 [25.6]
0.812 [20.6]
0.582 [14.8] 0.527
[13.4]
1.106
[28.1]
1.166 [29.6]
6. DIMENSIONS ARE IN INCHES [DIMENSIONS IN BRACKETS ARE IN MILLIMETERS].
7. TOLERANCES (UNLESS OTHERWISE SPECIFIED): 3 PLACES: ±0.005, 2 PLACES ±0.01, FRACTIONS: ±1/64"