KEPCO HSP Series 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
OPERATOR’S MANUAL
KEPCO INC.
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: http://www.kepcopower.com
An ISO 9001 Company.
©2015, KEPCO, INC
P/N 243-0851-h
HSP SERIES
1000 AND 1500 WATT SWITCHING POWER SUPPLY
VOLTAGE/CURRENT STABILIZED DC SOURCE
HSP SERIES
POWER SUPPLY

HSP OPR 081915 i/(ii Blank)
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope of Manual ..................................................................................................................................... 1-1
1.2 General Description................................................................................................................................. 1-1
1.3 Specifications.......................................................................................................................................... 1-1
1.4 Miscellaneous Features .......................................................................................................................... 1-5
1.4.1 Control/Programming......................................................................................................................... 1-5
1.4.2 Status Indicators/Flags...................................................................................................................... 1-5
1.4.3 Setpoint Monitors:.............................................................................................................................. 1-5
1.4.4 Remote Error Sensing:...................................................................................................................... 1-5
1.4.5 Load Sharing: .................................................................................................................................... 1-5
1.4.6 Load Monitor:..................................................................................................................................... 1-6
1.4.7 Auxiliary Supply:................................................................................................................................ 1-6
1.4.8 Overcurrent/Undervoltage Protection:............................................................................................... 1-6
1.4.9 Current Walk-in:................................................................................................................................. 1-6
1.4.10 Remote Reset:................................................................................................................................... 1-6
1.5 Options.................................................................................................................................................... 1-6
1.5.1 Meters (M Suffix): .............................................................................................................................. 1-6
1.5.2 Battery Chargers (B Suffix):............................................................................................................... 1-6
1.5.3 Internal Blocking Diode (R Suffix):..................................................................................................... 1-6
1.6 Accessories............................................................................................................................................. 1-6
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection....................................................................................................................... 2-1
2.2 Terminations and Controls ...................................................................................................................... 2-1
2.3 Source Power Requirements .................................................................................................................. 2-3
2.4 Cooling .................................................................................................................................................... 2-3
2.5 Preliminary Operational Check................................................................................................................ 2-3
2.6 Installation ............................................................................................................................................... 2-4
2.7 Wiring Instructions................................................................................................................................... 2-4
2.7.1 Safety Grounding............................................................................................................................... 2-4
2.7.2 Source Power Connections............................................................................................................... 2-5
2.7.3 D-C Output Grounding....................................................................................................................... 2-5
2.7.4 Power Supply/Load Interface............................................................................................................. 2-6
2.7.5 Load Connection - General................................................................................................................ 2-6
2.7.5.1 Load Connection - Method I (Local Error Sensing)...................................................................... 2-7
2.7.5.2 Load Connection - Method II (Remote Error Sensing)................................................................. 2-8
2.7.5.3 Load Connection - Method III (Series Connection)...................................................................... 2-9
2.7.5.4 Load Connection - Method IV (Parallel Operation)...................................................................... 2-10
2.7.5.4.1 Redundancy and Hot Swap Applications................................................................................2-10
2.7.6 Load Sharing ..................................................................................................................................... 2-11
2.7.7 Signal Connections............................................................................................................................ 2-12
2.8 Mechanical Keying .................................................................................................................................. 2-12
2.9 Retaining Latches.................................................................................................................................... 2-12
SECTION 3 - OPERATING INSTRUCTIONS
3.1 Operating Configuration .......................................................................................................................... 3-1
3.2 Remote Error Sense................................................................................................................................ 3-1
3.3 Output Voltage Programming.................................................................................................................. 3-1
3.4 Output Voltage Range............................................................................................................................. 3-2
3.5 Current Limit Programming ..................................................................................................................... 3-2
3.6 Current Limit Programming Range.......................................................................................................... 3-3
3.7 Setpoint Monitors .................................................................................................................................... 3-3
3.8 Overvoltage Protection Adjustment......................................................................................................... 3-4
3.9 Current Limit Characteristic..................................................................................................................... 3-5
3.10 Current Walk-in Circuit ............................................................................................................................ 3-6
3.11 5VAUX Floating Supply........................................................................................................................... 3-6
3.12 Remote Inhibit/Remote Reset Controls................................................................................................... 3-7

HSP OPR 081915 iii
TABLE OF CONTENTS
SECTION PAGE
LIST OF FIGURES
FIGURE PAGE
LIST OF TABLES
TABLE PAGE
3.13 Module Current Monitor........................................................................................................................... 3-7
3.14 Status Indicators and Status Flags.......................................................................................................... 3-8
3.14.1 Power Indicator/Source Power Status Flags..................................................................................... 3-9
3.14.2 DCFAIL Indicator and Output Status Flags ....................................................................................... 3-10
3.14.3 OVERTEMP Indicator and Status Flags............................................................................................ 3-10
3.14.4 FANFAIL Indicator and Status Flags................................................................................................. 3-10
3.15 Front Panel Meter (M Option) Operation................................................................................................. 3-10
3.15.1 Voltmeter Operation........................................................................................................................... 3-11
3.15.2 Ammeter Operation ........................................................................................................................... 3-11
3.15.3 Parallel/redundant Operation............................................................................................................. 3-11
3.16 Battery (B Option) Operation................................................................................................................... 3-12
1-1 HSP Series Power Supply ............................................................................................................................ iv
1-2 HSP (All), Nominal Mains Voltage: Temperature Derating,........................................................................ 1-3
1-3 HSP 1500W, Low Mains Voltage: Temperature, Power Derating............................................................... 1-3
1-4 Outline Drawing .......................................................................................................................................... 1-4
2-1 HSP Series Front Panel Controls and Indicators........................................................................................ 2-1
2-2 Configuration Switch Functions .................................................................................................................. 2-1
2-3 HSP Series Rear Panel Connections ......................................................................................................... 2-2
2-4 Load Connection - Method I (Local Error Sensing)..................................................................................... 2-7
2-5 Load Connection - Method II (Remote Error Sensing)................................................................................ 2-8
2-6 Load Connection - Method III - (Series Connection)................................................................................... 2-9
2-7 Load Connection - Method IV (Parallel/Redundant Operation with Hot-Swap) .......................................... 2-10
3-1 External Resistance Programming of Output Voltage................................................................................. 3-2
3-2 External Voltage Programming of Output Voltage...................................................................................... 3-2
3-3 External Voltage Programming of Current Limit.......................................................................................... 3-3
3-4 Current Walk-in Characteristic.................................................................................................................... 3-6
3-5 Remote Inhibit Control Operation ............................................................................................................... 3-7
3-6 Timing Diagram for POWER and DCFAIL Status....................................................................................... 3-9
3-7 HSP M (Meter) Option and B (Battery Charger) Option, Front Panel......................................................... 3-12
1-1 Model Parameters .......................................................................................................................................1-1
1-2 General Specifications ................................................................................................................................1-2
1-3 Accessories .................................................................................................................................................1-7
2-1 Configuration Controls ................................................................................................................................2-1
2-1 I/O Connector Pin Assignments ..................................................................................................................2-2
3-1 Status Indicators and Flags ........................................................................................................................3-8
3-2 Fault Detector Operation .............................................................................................................................3-10
3-3 B Option Fault Detection Window ...............................................................................................................3-12

iv HSPSERIES 081915
FIGURE 1-1. HSP SERIES POWER SUPPLY

HSPSERIES OPR 081915 1-1
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation and operation of the HSP series of voltage
and current stabilized d-c power supplies manufactured by Kepco, Inc., Flushing, New York, U.S.A.
1.2 GENERAL DESCRIPTION
The HSP power supply (Figure 1-1) is basically a voltage and current stabilized d-c source with
a relatively sharp crossover between voltage and current mode operation. This permits HSPs to
be used both as conventional regulated voltage sources and in applications such as battery
chargers, where automatic crossover between constant voltage and constant current operation
is required.
HSP power supplies are supplied in a single mechanical size and are nominally rated at either
1000 or 1500 watts of output power. HSP 1000 watt power supplies are designed to operate
over the universal a-c power mains voltage range of 90-277V (47-63Hz), with operation from
125-420V d-c also available. HSP 1500 watt products provide full power over the a-c mains
range of range of 180-277V a-c, and 1000W output power from 90-132V a-c; contact Kepco for
information on operation over other source voltage ranges. Active power factor correction cir-
cuitry limits source current harmonics to negligible levels, significantly improving source power
utilization. Cooling is provided via an internal d-c fan.
The HSP permits adjustment of both output voltage (VO) and current limit (IMAX), either by inter-
nal (front panel pot) or external (resistance or voltage) methods; programming method is
selected via DIP switches accessed through the top of the unit. Independent circuitry provides
protection against overvoltage, overcurrent and overtemperature failures; fault detection cir-
cuitry monitors performance of the output and critical internal functions, providing both visual
and electrical indicators. A switch-selectable “current walk-in” circuit and optional float/equalize
functions enhance the performance of HSP power supplies for such applications as battery
chargers.
The HSP power supply is specifically designed for both fixed installation operation and, when
used in conjunction with Kepco RA 60 or similar plug-in rack adapters, as a hot replaceable
module in a redundant power system. Forced current sharing and optional internal or external
output blocking diodes enhance power system reliability. Mechanical keying eliminates the risk
of incorrect module insertion. Tool-operated latches on the front panel provide positive security
against casual removal of an operating module.
1.3 SPECIFICATIONS
Table 1-1 below indicates specifications for parameters that vary for different HSP models; Table
1-2 lists general specifications that apply to all HSP models.
TABLE 1-1. MODEL PARAMETERS
MODEL
OUTPUT VOLTAGE
(Volts)
OVP
SETTING
(Volts)
OUTPUT CURRENT
(Amps) RIPPLE (mV p-p) NOISE (mV p-p)
EFFICIENCY
(Percent)
(See Note 1.)
Nominal
(Factory
Set)
Adjustment
Range Factory Setpoint 50° C 60° C 71°C Source max Switching max (Spike) 20MHz 100% Load 115V a-c
HSP 3.3-230 3.3 0.7-3.6 4.29 230 173 105 20 30 100 71
HSP 5-200 5 1.0-5.5 6.5 200 150 95 20 30 100 72
HSP 12-84 12 2.4-13.2 15.6 84 63 40 20 40 120 73
HSP 15-66 15 3.0-16.5 19.5 66 49.5 31.4 20 40 150 76
HSP 24-42 24 4.8-26.4 31.2 42 31.5 20 20 60 240 77
HSP 28-36 28 5.6-30.8 36.4 36 27 17 20 60 280 78
HSP 48-21 48 9.6-59.2 62.4 21 16 10 20 60 480 80
HSP 24-60 24 4.8-26.4 31.2 60 45 28.6 20 60 120 77
HSP 28-53 28 5.6-30.8 36.4 53 39.8 25.2 20 60 140 78
HSP 48-30 48 9.6-59.2 62.4 30 22.5 14.3 20 60 240 80
1. “R” Model efficiency is typically 2-3% lower.
1000 Watts
1500 Watts
FIGURE 0-1.

1-2 HSPSERIES OPR 081915
TABLE 1-2. GENERAL SPECIFICATIONS
CHARACTERISTIC REQUIREMENT
SOURCE INPUT
Source Voltage
AC: Single-Phase,
1000W 1500W
Nominal: 100-250V rms 200-250V rms
Range: 90-277Vrms 180-277V rms
DC: 125-420V d-c (polarity insensitive)
(See Note 1.)
Brownout Voltage 1000W:75 V a-c typ.
1500W:150 V a-c typ.
Source Frequency 47-440 Hz (Frequencies in excess of 63Hz will cause leakage current to exceed limits
specified below)
Source Current 120V a-c 11A rms max
240V a-c 1000W: 5.5A rms max
1500W: 8.0A rms max
Power Factor 0.99 typical; 0.96 minimum for all source conditions and loads from 25% to 100% of
rated load.
Inrush Current 75A Peak max
Efficiency See Table 1-1.
Withstand Voltage
(See Note 2)
3000V rms Input to Output
1500V rms Input to Case
500V d-c Output to Case
Leakage Current <0.50mA @ 115V a-c, 47-63Hz
<1.0mA @ 230V a-c, 47-63Hz
Safety
Agency
Approvals
UL Recognized (SELV)
UL 60950 3rd Edition
CSA Certified (SELV)
CSA 22.2 No. 60950-00
Immunity
(See Note 3)
Radiated RF (Ampl. Mod.) (ENV50140)
10V/m, 80-1000MHz
Radiated RF (Pulse Mod.) (ENV50204)
(Pulse) 10V/m, 900MHz
Magnetic Field (EN 61000-4-8)
30A/m, 50Hz
Electrostatic Discharge (EN 61000-4-2)
Contact: 4KV, Air: 8KV
Conducted RF (ENV50141)
10Vrms, 0.15-80MHz
Electrical Fast Transient (EN 61000-4-4)
2KV, Tr/Th = 8/20µs
Input Surge (EN 61000-4-5)
Comm. Mode: 2KV; Diff. Mode: 1KV
Emissions
Conducted RF (CISPR 22)
Class A Limits, 0.15-30MHz
Current Harmonics (EN 61000-3-2)
0-2KHz, any source/load condition)
CHARACTERISTIC REQUIREMENT
OUTPUT/LOAD
Nominal Voltage See Table 1-1.
Rated Current See Table 1-1.
Minimum Output
Current
2% of rated load (lower output conditions may
result in increased output ripple and increased
transient response recovery time).
Output Voltage
Range See Table 1-1.
Regulation Error
Source Effect 0.1% over full source
voltage range
Load Effect 0.1% from 5% to 100% of
rated load
Temperature
Effect 0.02%/oC, 0oC<TA<50oC
Time Effect
(Drift) 0.1%/24 hr period after 30
min. warm-up
Combined Effect 0.3%
Ripple and Noise See Table 1-1.
Start-up Time 1 sec maximum at rated output current
Output
Hold-up
Time
21.5 msec transparent power loss (no
indication)
5 msec following power loss indication
>27 msec total time prior to loss of output
regulation
Turn-on/Turn-off
Overshoot Within load transient response envelope
Load Transient
Response
(25% load transient,
2A/µsec rise/fall time)
Maximum
excursion 3% of nominal output
voltage
Recovery time 100sec return to within 1% of
set voltage
Output Polarity All outputs are floating and can be referenced
as required by the user at up to ±500V d-c.
PROTECTION
Input Fusing Front Panel circuit breaker (2-line)
Low A-C Protection HSP Power supplies will self-protect, no fixed
limit.
Overvoltage
Protection
Latched shutdown if output voltage exceeds
user-selected limit (see Operating Instructions,
PAR. 3.8) (see Note 4).
Overcurrent
Protection
Constant current limiting (optional undervol-
tage-activated latched shutdown (see Operat-
ing Instructions, PAR. 3.9) (see Note 4).
Overtemperature
Protection Thermostat shutdown with hysteretic recovery
and automatic restart.
NOTES:1. Safety Agency approval not applicable for noted conditions.
2. 25oC, 65% RH
3. Per EN 50082-2, Acceptance Criteria A
4. Latched shutdown requires that source power be cycled for
restart (optional restart by cycling REMOTE ON/OFF control
signal); see Operating Instructions, PAR. 3.12.

HSPSERIES OPR 081915 1-3
TABLE 1-2. GENERAL SPECIFICATIONS (Continued)
FIGURE 1-2. HSP (ALL), NOMINAL MAINS VOLTAGE:
TEMPERATURE DERATING, FIGURE 1-3. HSP 1500W, LOW MAINS VOLTAGE:
TEMPERATURE, POWER DERATING
CHARACTERISTIC REQUIREMENT
SIGNAL AND CONTROL
Remote Error Sensing 3.3V & 5V Models 0.25V per wire
All other Models 0.8V per wire
Remote On/Off Control Isolated TTL-compatible signal; either logic
high or logic low will disable output.
Load Sharing Within 5% of load when connected via load
sharing wire (see PAR. 2.7.6).
Load Monitor 0-5V analog signal proportional to output
load current; 5V at 100% of rated load.
Status Flags
(Form C dry relay contacts)
(see PAR. 3.14)
(See Notes 5 and 7.)
POWER
Indicates low source
voltage; signal
asserted a minimum of
5 msec prior to loss of
output voltage.
OUTPUT Indicates HSP Power Supply in normal
operating mode.
OVERTEMP Indicates HSP Power Supply in overtemper-
ature shutdown.
FAN FAIL Indicates failure of
internal cooling fan.
Status Indicators
(front Panel LEDs)
(See Note 5.)
POWER
Green; lit when source
voltage is above
minimum limit to
support output voltage.
DCFAIL Red; lit when output is outside normal voltage
regulation limits
OVERTEMP Yellow; lit when over- temperature protec-
tion is activated.
FAN FAIL Red; lit when fan failure latch is
activated.
Front Panel
Test Points
Monitors output voltage and current limit set
points; allows each HSP Power Supply to
be set while operating in any configuration,
including redundant mode.
Front Panel Meter
Accuracy
(M Option only)
Voltmeter: ±1%
Ammeter: ±10% from 25 to 100% of rated
output current.
CHARACTERISTIC REQUIREMENT
SIGNAL AND CONTROL (CONTINUED)
Auxiliary Voltage
(Isolated) 4.75-5.25V d-c output, 0 - 100mA, parallelable,
output isolated (500 V d-c), Input isolated
(SELV) (See Operating Instructions, PAR. 3.11).
Voltage Set
Programming
Mode selected by
internal switches
(See Note 6.)
(See PAR. 3.3.)
Internal Multiturn pot
External 1 Resistance: 0-50K
External 2 0-10V, 500A max
Current Limit
Programming Internal Multiturn pot
External 0-10V, 500A max
ENVIRONMENT
Temperature Range Operating
0 to 50° C: rated load (50°C to 71°
C: derate by 2.5%/° C, Figure 1-2)
For 1500W at lower mains voltage:
see Figure 1-3 and Note 1:
Storage –40 to +85oC
Cooling Internal d-c fan (inlet, exhaust as indicated in
Figure 1-4).
Humidity 0-95% RH (non-condensing), Operating and
Storage.
Shock Non-operating, 20g, 11msec 50%, half sine,
3 axes, 3 shocks each axis
Vibration 5-10Hz 10mm, double amplitude
10-55Hz 2g
Altitude Sea level to 10,000 feet
PHYSICAL
Dimensions See Figure 1-4.
Weight 16 lbs. (7.3Kg)
Source
Connections 3-pin power entry module (compatible with IEC 320/C19 molded line cord plug.
Load
Connection Two bus bars (+ and –) 1.0 x 0.125 inch, copper w/bright nickel finish
Signal Connection 37-pin D-subminiature connector (male)
NOTES 5: Status indicators and status flags are isolated and operate
independently, although driven by the same detector circuit.
6: The POWER/DCFAIL fault detector window tracks pro-
grammed output voltage, however, the overvoltage protection
trip point remains unaffected.
7. Form C contacts: rated from 30V d-c/1A to 60V d-c/0.3A.

1-4 HSPSERIES OPR 081915
FIGURE 1-4. OUTLINE DRAWING

HSPSERIES OPR 081915 1-5
1.4 MISCELLANEOUS FEATURES
1.4.1 CONTROL/PROGRAMMING
a) VOLTAGE CHANNEL: Output voltage is controlled continuously throughout the specified
adjustment range via a 10-turn potentiometer mounted behind the front panel. External
control can be exercised either by resistance or by control voltage (see PAR’s. 3.3 and 3.4).
b) CURRENT CHANNEL: Output current is controlled continuously throughout the specified
adjustment range via a 10-turn potentiometer mounted behind the front panel. External
control can be exercised by control voltage (see PAR’s. 3.5 and 3.6).
c) OVERVOLTAGE LEVEL: The output voltage level at which the overvoltage protection
latch is activated may be adjusted locally via a 10-turn potentiometer accessed through the
top cover (see PAR. 3.8).
d) REMOTE INHIBIT: Operation of the output regulator can be inhibited remotely via either
one of two TTL-level control lines, RC1 and RC2. Both of these signals are isolated from
both the input and output, allowing single-point control of several power supplies operating
at different potentials. Both positive and negative logic are supported (see PAR. 3.12).
1.4.2 STATUS INDICATORS/FLAGS
a) STATUS INDICATORS: Four LED indicators at the front panel provide the following opera-
tional information (see PAR. 3.14):
•POWER: Green; lit when source voltage is above minimum required to support rated
load.
•DCFAIL: Red; lit when output voltage is beyond regulation limits or when load current is
below minimum load sharing requirement.
•OVERTEMP: Amber; lit when internal overtemperature protection is activated.
•FANFAIL: Red; lit when internal cooling fan failure is detected.
b) STATUS FLAGS: Four sets of Form C dry relay contacts (3 wires each) are provided at the
I/O connector which duplicate the front panel status indicator functions (see PAR. 3.14).
1.4.3 SETPOINT MONITORS: Analog voltage signals which display programmed output voltage and
current limit values. These signals are available both at the front panel test points (VOand IMAX)
and at the I/O connector (VSET and ISET). Signals are referenced to negative error sense (see
PAR. 3.7).
1.4.4 REMOTE ERROR SENSING: Separate voltage sensing connections permit 4-wire connection
to load. Will compensate for static load effects due to power lead d-c resistance (DCR) up to
specified maximum voltage drop per load lead at maximum specified output voltage (see PAR.
3.2).
1.4.5 LOAD SHARING: Bidirectional control port provides forced load sharing between two or more
HSP (or HSM) series power supplies wired in parallel (see PAR. 2.7.6).
1.4.6 LOAD MONITOR: Analog voltage signal which indicates actual load current delivered by the
HSP power supply (see PAR. 3.13).

1-6 HSPSERIES OPR 081915
1.4.7 AUXILIARY SUPPLY: Logic-level secondary output provides up to 0.5 watts of power at 5V
d-c. This output is isolated from the output and is unaffected by the status of the main output.
Provides power for external Remote Inhibit controls (see PAR. 3.11).
1.4.8 OVERCURRENT/UNDERVOLTAGE PROTECTION: Switch-selectable option provides the
user load protection against long-term output overloads or undervoltage conditions (see PAR.
3.9).
1.4.9 CURRENT WALK-IN: Switch-selectable option provides control of output current rise rate
based on Bellcore TR-TSY-000947 requirements for battery chargers (see PAR. 3.10).
1.4.10 REMOTE RESET: Switch-selectable option provides capability to reset the latch used by the
overvoltage protection circuitry to disable the output regulator, using the Remote Inhibit control
lines (see PAR. 3.12).
1.5 OPTIONS
HSP options are described below; more than one option may be incorporated into any HSP
Power Supply.
1.5.1 METERS (M SUFFIX): HSP power supplies are available with an optional front panel meter
which displays output voltage and output current (switch selectable). Refer to PAR. 3.15 for
operation.
1.5.2 BATTERY CHARGERS (B SUFFIX): The battery charger option adds switch selectable “float”
and “equalize” functions which provide two separate voltage regulation settings, as well as an
expanded window for the output voltage fault detector compatible with normal battery operating
voltages (Refer to PAR. 3.16 for operation).
1.5.3 INTERNAL BLOCKING DIODE (R SUFFIX): This option adds a blocking diode in series with
the output, required for “hot swap” applications.
1.6 ACCESSORIES
Accessories for HSP Power Supplies are listed in Table 1-3.

HSPSERIES OPR 081915 1-7/(1-8 Blank)
TABLE 1-3. ACCESSORIES
ACCESSORY PART NUMBER USE
RACK
ADAPTERS RA 58 Provision for three HSP (or HSM) Power Supplies in a 19-inch rack. Used for hard-wired
applications only.
RACK
ADAPTER
OPTIONS
RA 59 Same as RA 60 except accommodates up to four HSP Power Supplies in a 24-inch rack for
plug-in and hot swappable applications.
RA 60
Plug-in rack adapter provides for three HSP Power Supplies in a 19-inch rack. Designed
specifically for hot-swap applications when used with R-suffix HSP models; the power out-
puts of all three positions of this rack adapter are permanently bussed together in parallel.
Separate source power and I/O signal connections for each position.
RA 61 Provision for four HSP (or HSM) Power Supplies in a 24-inch rack. Used for hard-wired appli-
cations only.
RA 62 Same as RA 60 except that two positions are bussed together in parallel while the remaining
position is left isolated for independent operation.
RA 63 Same as RA 60 except that all three positions are isolated for independent operation.
-23E Incorporates wider mounting ears to accommodate a 23-inch rack; available for all 19-inch
rack adapters above.
-24E Incorporates wider mounting ears to accommodate a 24-inch rack; available for all 19-inch
rack adapters above.
SERIES
CLAMPING
DIODES
124-0600 Used with HSP 24V, 28V and 48V models when wired for series operation. User must pro-
vide wiring and heat sink. One diode required for each power supply. See PAR.2.7.5.3.
124-0601 Used with HSP 3.3V, 5V, 12V and 15V models when wired for series operation. User must
provide wiring and heat sink. One diode required for each power supply. See PAR. 2.7.5.3.
CONNECTORS
142-0422 I/O connector mating plug
142-0381 Source power inlet connector mating plug (IEC 320-C19)
118-0776 North American linecord set (NEMA 5-20P to IEC 320-C19)
108-0294 I/O connector backshell
108-0203 I/O connector jackposts (set of two)
FIXED
INSTALLATION
KIT
219-0240 Standard - Kit consists of North American linecord set, I/O connector mating plug, I/O con-
nector backshell, I/O connector jackposts, and plastic feet with screws.
219-0249 Customer-wired - Same as Standard Kit (Part No. 219-240), except linecord is replaced with
user-wired AC power inlet mating plug.
SCREW 101-0159 Used to attach plastic feet to HSP Power Supply (#6-20, 0.625 in. long).
CABLE
ASSEMBLIES
118-0974 Mates with I/O connector. Provides connection between pins 19 (–error sense) and 37
(+error sense) to two wires terminated in ring lugs for ±error sense connections.
118-1133 Simplifies I/O connections for two units in parallel. Provides connections between two I/O
connectors: pins 14 (current share), 19 (–error sense) and 37 (+error sense). Two wires ter-
minated in ring lugs are provided or ±error sense connections.
118-1095 Simplifies I/O connections for three units in parallel. Provides connections between three I/O
connectors: pins 14 (current share), 19 (–error sense) and 37 (+error sense). Two wires ter-
minated in ring lugs are provided for ±error sense connections.

HSPSERIES OPR 081915 2-1
SECTION 2 - INSTALLATION
2.1 UNPACKING AND INSPECTION
This instrument 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.
Perform the preliminary operational check as outlined in PAR. 2.5. If any indication of damage is
found, file an immediate claim with the responsible transport service.
2.2 TERMINATIONS AND CONTROLS
a) Front Panel: Refer to Figure 2-1.
b) Configuration Controls: Refer to Figure 2-2 and Table 2-1.
c) Rear Panel: Refer to Figure 2-3 and Table 2-1.
FIGURE 2-1. HSP SERIES FRONT PANEL CONTROLS AND INDICATORS
FIGURE 2-2. CONFIGURATION SWITCH FUNCTIONS
TABLE 2-1. CONFIGURATION CONTROLS
SW
POSITION FUNCTION REF PAR.
S1-1 REMOTE LOCKOUT RESET 3.12
S1-2 CURRENT WALK-IN 3.10
S1-3 UNDERVOLTAGE LOCKOUT 3.9
S2-1 RANGE SELECT (VOLTAGE LOOP) 3.4
S2-2 RANGE SELECT (FAULT DETECTOR) 3.4
S2-3 EXT. VOLT. PROG. (VOLTAGE LOOP) 3.3
S2-4 EXT. RES. PROG. (VOLTAGE LOOP) 3.3
S2-5 INT. PROG. (VOLTAGE LOOP) 3.3
S3-1 RANGE SELECT (CURRENT LOOP) 3.6
S3-2 EXT. VOLT. PROG. (CURRENT LOOP) 3.5
S3-3 INT. PROG. (CURRENT LOOP) 3.5

2-2 HSPSERIES OPR 081915
FIGURE 2-3. HSP SERIES REAR PANEL CONNECTIONS
TABLE 2-1. I/O CONNECTOR PIN ASSIGNMENTS
PIN NO. NAME DESCRIPTION OF FUNCTION REF. PAR.
1 X NO CONNECTION
2 X NO CONNECTION
3 FFS-1 FAN STATUS - NORMALLY CLOSED CONTACT 3.14
4 ACS-C SOURCE POWER STATUS - COMMON CONTACT 3.14
5 ACS-2 SOURCE POWER STATUS - NORMALLY CLOSED CONTACT 3.14
6 X
NO CONNECTION(1)
7 RC2 REMOTE INHIBIT - NORMALLY LOW INPUT(2) 3.12
8 RC1 REMOTE INHIBIT - NORMALLY HIGH INPUT(2) 3.12
9 X
NO CONNECTION(1)
10 X NO CONNECTION
11 OTS-C OVERTEMP STATUS - COMMON CONTACT 3.14
12 PSS-C OUTPUT STATUS - COMMON CONTACT 3.14
13 PSS-2 OUTPUT STATUS - NORMALLY CLOSED CONTACT 3.14
14 ISHARE LOAD SHARE SIGNAL BUS (0-5.5V)(3) 2.7.6
15 IPROG ANALOG PROGRAMMING INPUT - CURRENT (0-10V)(3) 3.5
16 X NO CONNECTION
17 VRP-1 RESISTIVE PROGRAMMING INPUT (0-10K) 3.3
18 VPROG ANALOG PROGRAMMING INPUT - VOLTAGE (0-10V)(3) 3.3
19 -S NEGATIVE ERROR SENSE INPUT 2.7.5
20 X NO CONNECTION
21 FFS-2 FAN STATUS - NORMALLY OPEN CONTACT 3.14
22 FFS-C FAN STATUS - COMMON CONTACT 3.14
23 ACS-1 SOURCE POWER STATUS - NORMALLY OPEN CONTACT 3.14
24 X NO CONNECTION(1)
25 AUXRTN AUXILIARY SUPPLY RETURN(2) 3.11
26 5VAUX AUXILIARY SUPPLY OUTPUT 3.11
27 X NO CONNECTION(1)
28 X NO CONNECTION
29 OTS-2 OVERTEMP STATUS - NORMALLY OPEN CONTACT 3.14
30 OTS-1 OVERTEMP STATUS - NORMALLY CLOSED CONTACT 3.14
31 PSS-1 OUTPUT STATUS - NORMALLY OPEN CONTACT 3.14
32 IMON ANALOG OUTPUT CURRENT MONITOR (0-5.5V)(3) 3.13
33 ISET CURRENT LIMIT SETPOINT MONITOR (0-10V)(3) 3.7
34 X NO CONNECTION
35 VRP2 RESISTIVE PROGRAMMING INPUT - VOLTAGE (0-10K) 3.3
36 VSET OUTPUT VOLTAGE SETPOINT MONITOR (0-10V)(3) 3.7
37 +S POSITIVE ERROR SENSE INPUT 2.7.5
(1) These pins are left blank to provide voltage isolation between output
and a 5V aux supply which powers the remote inhibit control circuitry.
(2) These signals are referenced to auxrtn (pin 25).
(3) These signals are referenced to -s (pin 19).

HSPSERIES OPR 081915 2-3
2.3 SOURCE POWER REQUIREMENTS
This power supply will operate with the installed circuit breaker from single phase a-c mains
power over the specified voltage and frequency ranges without adjustment or modification.
Operation from d-c power is also available; please contact factory for limitations imposed when
using d-c source power.
2.4 COOLING
The power devices used within the HSP power supply are maintained within their operating tem-
perature range by means of internal heat sink assemblies cooled by an internal cooling fan. The
cooling method utilizes pressurization rather than evacuation, resulting in greater cooling effi-
ciency and reduced contaminant collection within the enclosure. ALL INLET AND EXHAUST
OPENINGS AROUND THE POWER SUPPLY CASE MUST BE KEPT CLEAR OF OBSTRUC-
TION TO ENSURE PROPER AIR ENTRY AND EXHAUST. Periodic cleaning of the power sup-
ply interior is recommended. If the power supply is rack mounted, or installed within a confined
space, care must be taken that the ambient temperature, which is the temperature of the air
immediately surrounding the power supply, does not rise above the specified limits for the oper-
ating load conditions (see PAR. 1.3 and Figure 1-2).
2.5 PRELIMINARY OPERATIONAL CHECK
A simple operational check after unpacking and before equipment installation is advisable to
ascertain whether the power supply has suffered damage resulting from shipping. Refer to Fig-
ures 2-1, 2-2 and 2-3 for location of operating controls and electrical connections.
1. THE POWER SUPPLY WILL NOT OPERATE UNLESS THE REMOTE SENSE LINES ARE
PROPERLY CONNECTED TO THE OUTPUT TERMINALS! Connect the remote sense ter-
minals to the output bus bars using the mating I/O Connector (Kepco P/N 142-0422) or other
means as shown in PAR. 2.7.5.1 and Figure 2-4.
2. Connect the power supply to source power as defined in PAR. 1.3. Connection can be made
using either the North American linecord set (Kepco P/N 118-0776) or using a custom line-
cord terminated at one end with an IEC 320/C19 plug (Kepco P/N 142-0381). Follow all
requirements of local electric code regarding wire size, termination, etc.
3. Connect a static load, R, across output terminals. The load value is determined by the nomi-
nal output voltage of the HSP power supply and must be capable of handling 2% of the
power supply output rating (minimum power capability of 20 watts). R is calculated as
approximately equal to output voltage2/20 (R = E2/P). For example, for the HSP 48-21, R =
482/20 = 115.2; use load of 120 ohms, 20 watts.
CAUTION: DO NOT repeatedly toggle the circuit breaker/switch as this may damage the
unit.
4. Set Power ON/OFF circuit breaker/switch on front panel to ON. If actuator does not lock
when released, wait a few seconds before trying again. The circuit breaker is “trip-free”
design; if overload exists, contacts cannot be held closed by actuator. Verify that the
“POWER” indicator LED on the front panel is lit, and that all other indicator lamps on the front
panel are not lit.
5. Using a DVM, measure the voltage across the output bus bars; this voltage is factory set to
the value shown in Table 1-1. If necessary, adjust the output voltage using the trim pot
labeled “VO” accessed through the front panel.
6. Using the DVM, measure the voltage across the front panel test points “VO” and “COM”; this
voltage should read 1/10 of the output voltage measured in step 5 above, ±1%.

2-4 HSPSERIES OPR 081915
7. Using the DVM, measure the voltage across the front panel test points “IMAX” and “COM”;
this voltage is factory adjusted to 10.0V, and corresponds to 100% of maximum current (see
PAR. 3.7). If necessary, readjust to 10.0V using the trim pot labeled “IMAX” accessed through
the front panel; if desired, readjust for lower current limit (see PAR. 3.7).
8. Verify that front panel indicators still appear as in step 4 above.
9. Disconnect sense lines with power supply still operating, either by removing the mating I/O
connector or by manually opening the sense line connected to Pin 37; verify that the power
supply output turns off, and that the “DCFAIL” indicator LED on the front panel is now lit,
along with the “POWER” indicator LED. (NOTE: At no load the output voltage will drop
slowly.) Turn the front panel circuit breaker off and wait until the “DCFAIL” indicator LED
blinks. Reconnect the sense lines, then turn the circuit breaker back on; verify that the output
voltage returns to the value measured in step 5 above, and that the indicator LEDs appear
as in step 4 above.
10.Turn off front panel circuit breaker and remove source power connection.
2.6 INSTALLATION (REFER TO FIGURE 1-4, OUTLINE DRAWING)
The HSP power supply may be operated as a fixed rack-mounted unit, or as a plug-in modular
instrument as follows:
• When used as a fixed, rack-mounted unit, attach the HSP power supply to the mounting
surface using the four holes in the bottom of the chassis surrounded by plastic grom-
mets.
• When used as part of a plug-in power system, refer to the Instruction Manual accom-
panying the applicable Kepco rack adapter for installation directions.
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.
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 equip-
ment. 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.
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 ground terminal of the source power connector (see
Figure 2-2) is connected to the HSP chassis and the instructions below suggest wiring methods
which comply with these safety requirements; however, it is the customer's responsibility to
ensure that all applicable electric codes for safety grounding requirements are met.
IT IS IMPERATIVE THAT THE USER PROVIDE ALL THREE SOURCE WIRE CONNEC-
TIONS, AS THIS CONNECTION IS THE SAFETY GROUND PROVISION!
WARNING

HSPSERIES OPR 081915 2-5
2.7.2 SOURCE POWER CONNECTIONS
The rear panel of the HSP power supply is equipped with an IEC 320 style recessed power inlet
connector which provides interface to a 3-wire safety line cord via a polarized mating plug.
Kepco offers as accessories (see Table 1-3) both a user-wired mating connector and a prewired
linecord set, the latter configured for North American applications. Terminal assignment follows
internationally accepted conventions (see Figure 2-3). It is the user's responsibility to ensure
that all applicable local codes for source power wiring are met.
The user-wired mating connector requires size #14 AWG (minimum) conductors for all three
connections. When HSP power supplies are installed in a plug-in rack adapter (RA 60 or simi-
lar), consult the rack adapter Instruction Manual for source connection information.
Depending on your application, source branch current rating may be significantly less than the
rating of the HSP circuit breaker, especially in configurations where HSP are used in parallel/
redundant applications. The HSP circuit breaker rating is based on worst-case operating condi-
tions. However, since HSP power supplies are switch-mode power supplies, the source power
drain is constant and essentially independent of source voltage, regardless of load power
requirements. Therefore under normal, rather than worst case, conditions, HSP draw substan-
tially less than the rated maximum input current, particularly at higher source voltages. Contact
Kepco Applications Engineering for additional information.
2.7.3 D-C OUTPUT GROUNDING
Connections between the power supply and the load and sensing connections may, despite all
precautions such as shielding, twisting of wire pairs, etc., be influenced by radiated noise, or
“pick-up”. To minimize the effects of this radiated noise the user should consider grounding one
side of the power supply/load circuit. The success of d-c grounding requires careful analysis of
each specific application, however, and this recommendation can only serve as a general guide-
line.
One of the most important considerations in establishing a successful grounding scheme is to
avoid GROUND LOOPS. Ground loops are created when two or more points are grounded at
different physical locations along the output circuit. Due to the interconnection impedance
between the separated grounding points, a difference voltage and resultant current flow is
superimposed on the load. The effect of this ground loop can be anything from an undesirable
increase in output noise to disruption of power supply and/or load operation. The only way to
avoid ground loops is to ensure that the entire output/load circuit is fully isolated from ground,
and only then establish a single point along the output/load circuit as the single-wire ground
point.
The exact location of the “best” d-c ground point is entirely dependent upon the specific applica-
tion, and its selection requires a combination of analysis, good judgement and some amount of
empirical testing. If there is a choice in selecting either the positive or negative output of the
power supply for the d-c ground point, both sides should be tried, and preference given to the
ground point producing the least noise. For single, isolated loads the d-c ground point is often
best located directly at one of the output terminals of the power supply; when remote error sens-
ing is employed, d-c ground may be established at the point of sense lead attachment. In the
specific case of an internally-grounded load, the d-c ground point is automatically established at
the load.
The output terminals of HSP power supplies are d-c isolated (“floating”) from the chassis in
order to permit the user maximum flexibility in selecting the best single point ground location.
Output ripple specifications as measured at the output are equally valid for either side grounded.

2-6 HSPSERIES OPR 081915
Care must be taken in measuring the ripple and noise at the power supply: measuring devices
which are a-c line operated can often introduce additional ripple and noise into the circuit.
There is, unfortunately, no “best” method for interconnecting the load and power supply. Individ-
ual applications, location and nature of the load require careful analysis in each case. Ground-
ing a single point in the output circuit can be of great importance. It is hoped that the preceding
paragraphs will be of some assistance in most cases. For help in special applications or difficult
problems, consult directly with Kepco's Application Engineering Department.
2.7.4 POWER SUPPLY/LOAD INTERFACE
The general function of a voltage- or current-stabilized power supply is to deliver the rated out-
put quantities to the connected load. The load may have any conceivable characteristic: it may
be fixed or variable, it may have predominantly resistive, capacitive or inductive parameters; it
may be located very close to the power supply output terminals or it may be a considerable dis-
tance away. The perfect interface between a power supply and its load would mean that the
specified performance at the output terminals would be transferred without impairment to any
load, regardless of electrical characteristics or proximity to each other.
The stabilized d-c power supply is definitely not an ideal voltage or current source, and practical
interfaces definitely fall short of the ideal. All voltage-stabilized power supplies have a finite
source impedance which increases with frequency, and all current-stabilized power supplies
have a finite shunt impedance which decreases with frequency. The method of interface
between the power supply output and the load must, therefore, take into account not only size
with regard to minimum voltage drop, but configuration with regard to minimizing the impedance
introduced by practical interconnection techniques (wire, bus bars, etc.). The series inductance
of the load wire must be as small as possible as compared to the source inductance of the
power supply: error sensing cannot compensate for reactive effects due to this. These dynamic
conditions are especially important if the load is constantly modulated or step-programmed, or
has primarily reactive characteristics, or where the dynamic output response of the power sup-
ply is critical to load performance.
2.7.5 LOAD CONNECTION - GENERAL
Load connections to the HSP power supply are achieved via the bus bars protruding from the
rear panel. The bus bars are each provided with two holes, one 0.34" diameter clearance hole
(for 5/16" UNC threaded fastener) and one #10-32 threaded hole (see Figure 1-4). The threaded
hole is provided for attachment of error sensing leads from the signal connector when local
sense with benchtop operation is desired. Do not connect sense lines using these holes when
using the HSP Power Supply with plug-in rack adapters; instead connect ± sense lines to ± out-
put studs on rack adapter, observing proper polarities: plus to plus, minus to minus.
Load cable or bus bar attachment should use the clearance hole, using a 5/16" UNC nut, bolt
and lockwasher. The use of the proper fastener size and inclusion of a lockwasher are critical to
maintaining intimate contact between the load conductor and output bus bar; Kepco recom-
mends the use of fasteners made of conductive material (brass, phosphor bronze, etc.) to
enhance conductivity; for high current loads (>100A) Kepco recommends the use of Bellville-
style constant tension washers in place of conventional lockwashers.
NOTE
REGARDLESS OF OUTPUT CONFIGURATION, OUTPUT SENSE LINES MUST
BE CONNECTED FOR OPERATION. OBSERVE POLARITIES: THE NEGATIVE
SENSING WIRE MUST BE CONNECTED TO THE NEGATIVE LOAD WIRE, AND
THE POSITIVE SENSING WIRE TO THE POSITIVE LOAD WIRE.