Spellman SLS SERIES, SLS160*2000, SLS200*2000, SLS260*2000, SLS300*2000 Instruction Manual

R

Instruction Manual

SLS SERIES

MODEL :
SERIAL# :
DATE :

SPELLMAN
HIGH VOLTAGE ELECTRONICS
CORPORATION

475 Wireless Blvd.
Hauppauge, New York, 11788

[phone]*FAX: [phone]*
E-mail: [e-mail]
Website: www.spellmanhv.com

High Voltage Power Supply

SLS MANUAL 118131-001 Rev A

The SLS series of high voltage power supplies provide up
to 2000 watts of power with voltage outputs ranging from
160kV to 360kV. These power supplies utilize high frequen­cy resonant inverters with proprietary controls for reliable
operation in extreme environments. The high voltage multi­plier unit is built with a hybrid design of solid encapsulation
and air, thus reducing its overall size. Comprised of 20kV
interlocking wafers, the multiplier unit offers flexible building
blocks for many different output configurations.

TYPICAL APPLICATIONS

Ion Implantation Particle Accelerators
Electron Guns

SPECIFICATIONS

Input Voltage:

220Vac±10%, three phase, 50/60Hz. (200Vac±10% optional).

Output Voltage Range:

Models available from 160kV to 360kV and up
to 2000W. Each model is available with positive
or negative polarity outputs.

Voltage Regulation:

Better than 0.05% for specified line variations
and load variations.

Ripple:

0.1% p-p of maximum output voltage.

Remote Voltage Control:

0 to +10V for 0 to maximum voltage. Accuracy and
repeatability: 1% of maximum rating.

Remote Current Control:

0 to +10V for 0 to maximum voltage. Accuracy and
repeatability: 1% of maximum rating.

Voltage Monitor:

0 to 10V equivalent to rated voltage. Accuracy, 1% reading.

Current Monitor:

0 to 10V equivalent to rated current. Accuracy, 1% reading.

Stability:

0.05% per hour after 1/2 hour warm-up.

0.05% per 8 hours.

Slow Start:

Slow start times: 6 seconds standard.

Temperature Coefficient:

0.01% per degrees C.

Protection:

Overcurrent, Overvoltage, Arc protection, Overtemperature.

Arc Detect:

If 8 arcs occur in a 10 second, non-synchronous time window,
the supply reverts to the Power Down Mode with an ARC fault
displayed on the front panel default diagnostic display.

Environmental:

Temperature Range:

Operating: 0˚C to 40˚C
Storage: -20˚C to 85˚C

Humidity:

10% to 70%, non-condensing.

Dimensions:

Inverter Driver Chassis:

3.50”(2U)H x 19.0”W x 19.0”D (8.9cm x 48.3cm x 48.3cm)

Multiplier Unit:

Depends on model specified.

Distance from Stack to Driver:

2.5 meters ±0.1 meter maximum.

Signal Connector:

25 pin, male D connector, J3.

Metering:

Front panel, 3.5 digit, digital voltage and current meters.

Front Panel Controls:

Voltage and current are continuously adjustable by ten-turn
potentiometers with lockable counting dials, ON/OFF circuit
breaker/lamp, high voltage ON switch/indicator and high
voltage OFF switch/indicator.

Front Panel Status Indicators:

Voltage Control Mode Overcurrent
Current Control Mode Overvoltage
Interlock Open Arc
Interlock Closed Regulation Error
High Voltage Inhibit Overtemperature
Overpower (optional)

Regulatory Approvals:

Compliant to 2004/108/EC, the EMC Directive
and 2006/95/EC, the Low Voltage Directive.

• 160kV - 360kV Outputs

• Low Ripple

• High Stability

• Overcurrent, Overvoltage

and Arc Protection

• Arc Detect

• Lightweight, Compact Size

• OEM Customization Available

PAGE 1 OF 2

SPELLMAN HIGH VOLTAGE ELECTRONICS CORPORATION

SLS

2000W
POWER SUPPLY

www.spellmanhv.com/manuals/SLS

Corporate Headquarters

Hauppauge, New York USA

[phone] FAX: [phone]

e-mail: [e-mail]

www.spellmanhv.com

128016-001 REV. F

Spellman High Voltage is an ISO 9001:2008 and ISO 14001:2004 registered company

Copyright © 2004 Spellman High Voltage Electronics Corp.

SLS SELECTION TABLE

MAXIMUM RATING MODEL NUMBER

kV mA

160 12.5 SLS160*2000
200 10.0 SLS200*2000
260 7.7 SLS260*2000
300 6.6 SLS300*2000
360 5.5 SLS360*2000

*Specify “P” for positive polarity or “N” for negative polarity
Other combinations of voltage and current are available.

SLS I/O INTERFACE CONNECTOR 25 PIN

PIN SIGNAL

1 Power Supply Common
2 External Inhibit
3 External Interlock
4 External Interlock Return
5 Current Monitor
6 Voltage Monitor
7 +10V Reference
8 Remote Current Program In

9 Local Current Program Out
10 Remote Voltage Program In
11 Local Voltage Program Out
12 EFR (common)
13 EFR (normally closed)
14 Local HV OFF Out
15 HV OFF
16 Remote HV ON
17 Remote HV OFF Indicator
18 Remote HV ON Indicator
19 Remote Voltage Mode
20 Remote Current Mode
21 Spare
22 Remote PS Fault
23 +15V Output
24 Power Supply Common
25 Shield Return

milliamperes kilovolts

SLS

IO

HV
ON

HV
OFF

18.31 [465.14]

3.00 [76.20]
TYP

0.34 [8.73]

0.23 [5.72]

TYP

0.38 [9.52]

4 PL

0.25 [6.35]
4 PL

3.45 [87.60]

19.00 [482.60]

FRONT VIEW

WARNING

DO NOT REMOVE HIGH VOLTAGE

CABLE UNTIL 3 MINUTES

HAVE ELAPSED AFTER
TURNING POWER OFF

SPELLMAN

HIGH VOLTAGE ELECTRONICS CORP.
Plainview, NY 11803 MADE IN USA

PART NO:
MODEL:

SERIAL NO.
OUTPUT:
INPUT:

BACK VIEW

TOP VIEW

17.00 [431.80]

19.13 [485.78]

17.00 [431.80]

6 ft OF LINE CABLE
SUPPLIED WITH UNIT.

LOW VOLTAGE
CONNECTION TO HV
TRANSFORMER ASSEMBLY

20.19 [513]

1.00 [25.40]

12.00 [304.8]

DIMENSIONS: in.[mm]

160kV Model

PAGE 2 OF 2

SPELLMAN HIGH VOLTAGE ELECTRONICS CORPORATION

SLS

2000W
POWER SUPPLY

Corporate Headquarters

Hauppauge, New York USA

[phone] FAX: [phone]

e-mail: [e-mail]

www.spellmanhv.com

128016-001 REV. F

Spellman High Voltage is an ISO 9001:2008 and ISO 14001:2004 registered company

Copyright © 2004 Spellman High Voltage Electronics Corp.

IMPORTANT SAFETY PRECAUTIONS

SAFETY

THIS POWER SUPPLY GENERATES VOLTAGES THAT ARE DANGEROUS AND MAY BE FATAL.

OBSERVE EXTREME CAUTION WHEN WORKING WITH THIS EQUIPMENT.

High voltage power supplies must always be grounded.

Do not touch connections unless the equipment is off and the

Capacitance of both the load and power supply is discharged.

Allow five minutes for discharge of internal capacitance of the power supply.

Do not ground yourself or work under wet or damp conditions.

SERVICING SAFETY

.

Maintenance may require removing the instrument cover with the power on.

Servicing should be done by qualified personnel aware of the electrical hazards.

WARNING note in the text call attention to hazards in operation of these units

that could lead to possible injury or death.

CAUTION notes in the text indicate procedures to be followed to avoid possible

damage to equipment.

Copyright © 2000, Spellman High Voltage Electronics Corporation. All Rights Reserved.

This information contained in this publication is derived in part from proprietary and patent data. This information has

been prepared for the express purpose of assisting operating and maintenance personnel in the efficient use of the

model described herein, and publication of this information does not convey any right to reproduce it or to use it for

any purpose other than in connection with installation, operation, and maintenance of the equipment described.

118004-001 REV. B

WICHTIGE SICHERHEITSHINWEISE

SICHERHEIT

DIESES HOCHSPANNUNGSNETZTEIL ERZEUGT LEBENSGEFÄHRLICHE HOCHSPANNUNG.

SEIN SIE SEHR VORSICHTIG BEI DER ARBEIT MIT DIESEM GERÄT.

Das Hochspannungsnetzteil muß immer geerdet sein.

Berühren Sie die Stecker des Netzteiles nur, wenn das Gerät ausgeschaltet ist und die elektrischen

Kapazitäten des Netzteiles und der angeschlossenen Last entladen sind.

Die internen Kapazitäten des Hochspannungsnetzteiles benötigen ca. 5 Minuten, um sich zu entladen.

Erden Sie sich nicht, und arbeiten Sie nicht in feuchter oder nasser Umgebung.

SERVICESICHERHEIT

Notwendige Reparaturen können es erforderlich machen, den Gehäusedeckel während des Betriebes zu

entfernen.

Reparaturen dürfen nur von qualifiziertem, eingewiesenem Personal ausgeführt werden.

“WARNING” im folgenden Text weist auf gefährliche Operationen hin, die zu Verletzungen oder zum Tod

führen können.

“CAUTION” im folgenden Text weist auf Prozeduren hin, die genauestens befolgt werden müssen, um

eventuelle Beschädigungen des Gerätes zu vermeiden.

118004-001 REV. B

PRECAUTIONS IMPORTANTES POUR VOTRE SECURITE

CONSIGNES DE SÉCURITÉ

CETTE ALIMENTATION GÉNÈRE DES TENSIONS QUI SONT DANGEUREUSES ET PEUVENT ÊTRE FATALES.

OYEZ EXTRÊMENT VIGILANTS LORSQUE VOUS UTILISEZ CET ÉQUIPEMENT.

S

Les alimentations haute tension doivent toujours être mises à la masse.

Ne touchez pas les connectiques sans que l’équipement soit éteint et que la capacité à la fois de la charge et de

l’alimentation soient déchargées.

Prévoyez 5 minutes pour la décharge de la capacité interne de l’alimentation.

Ne vous mettez pas à la masse, ou ne travaillez pas sous conditions mouillées ou humides.

CONSIGNES DE SÉCURITÉ EN CAS DE REPARATION

La maintenance peut nécessiter l’enlèvement du couvercle lorsque l’alimentation est encore allumée.

Les réparations doivent être effectuées par une personne qualifiée et connaissant les risques électriques.

Dans le manuel, les notes marquées « WARNING » attire l’attention sur les risques lors de la manipulation de ces

équipements, qui peuvent entrainer de possibles blessures voire la mort.

Dans le manuel, les notes marquées « CAUTION » indiquent les procédures qui doivent être suivies afin d’éviter

d’éventuels dommages sur l’équipement.

118004-001 REV. B

IMPORTANTI PRECAUZIONI DI SICUREZZA

SICUREZZA

QUESTO ALIMENTATORE GENERA TENSIONI CHE SONO PERICOLOSE E

POTREBBERO ESSERE MORTALI.

PONI ESTREMA CAUTELA QUANDO OPERI CON QUESO APPARECCHIO.

Gli alimentatori ad alta tensione devono sempre essere collegati ad un impianto di terra.

Non toccare le connessioni a meno che l’apparecchio sia stato spento e la capacità interna

del carico e dell’alimentatore stesso siano scariche.

Attendere cinque minuti per permettere la scarica della capacità interna dell’alimentatore

ad alta tensione.

Non mettere a terra il proprio corpo oppure operare in ambienti bagnati o saturi d’umidità.

SICUREZZA NELLA MANUTENZIONE.

Manutenzione potrebbe essere richiesta, rimuovendo la copertura con apparecchio

acceso.

La manutenzione deve essere svolta da personale qualificato, coscio dei rischi elettrici.

Attenzione alle AVVERTENZE contenute nel manuale, che richiamano all’attenzione ai

rischi quando si opera con tali unità e che potrebbero causare possibili ferite o morte.

Le note di CAUTELA contenute nel manuale, indicano le procedure da seguire per evitare

possibili danni all’apparecchio.

118004-001 REV. B

Table of Contents

1. INTRODUCTION

1.1 Description of the SLS Series ..............................................................................1

1.2 Standard Features .................................................................................................2

1.2.1 Rem ote Operating Features ..................................................................2

1.2.2 System Status and Fault Diagnostic Display ........................................2

1.3 Options .................................................................................................................3

1.4 Interpreting the Model Number ...........................................................................4

2. INSPECTION & INSTALLATION

2.1 Initial Inspection ..................................................................................................5

2.2 Mechanical Installation ........................................................................................5

3. OPERATING INSTRUCTIONS

3.1 Operation .............................................................................................................7

3.2 Standard Features .................................................................................................8

PAGE

4. PRINCIPLES OF OPERATION

4.1 Chassis .................................................................................................................17

4.2 Line Rectification and Filtering ...........................................................................17

4.3 Inverter .................................................................................................................18

4.4 High Voltage Transformer ...................................................................................18

4.5 High Voltage Stack Assembly .............................................................................18

4.6 Control/Power PWB ............................................................................................18

4.7 Front Panel Assembly ..........................................................................................19

4.8 Options .................................................................................................................19

5. OPTIONS

5.1 Adjustable Overload Trip ....................................................................................20

5.2 220Vac Single Phase Input .................................................................................20

5.3 No Slow Start ......................................................................................................20

5.4 Non-Standard Slow Start .....................................................................................20

5.5 Arc Trip ................................................................................................................20

5.6 Instant On .............................................................................................................20

5.7 External Fault Relay ............................................................................................21

5.8 Custom Designed Models ....................................................................................21

SLS SERIES MANUAL I 118132-001 RevA

6. MAINTENANCE

6.1 Periodic Servicing ................................................................................................22

6.2 Performance Test .................................................................................................22

6.3 High Voltage Dividers .........................................................................................22

7. REPLACEMENT PARTS

7.1 Replacement Parts ................................................................................................23

7.2 Correspondence and Ordering Spare Parts ..........................................................23

8. FACTORY SERVICE

8.1 Warranty Repairs .................................................................................................24

8.2 Factory Service Procedures .................................................................................24

8.3 Ordering Options and Modifications ...................................................................24

8.4 Shipping Instructions ...........................................................................................24

SLS SERIES MANUAL II 118132-001 RevA

LIST OF FIGURES

Figure 2.1 SLS Series Dimensions ...............................................................................6

Figure 3.1 SLS Series Typical Operating Set Up .........................................................10

Figure 3.2A Wiring Diagram for Remote Programming via Voltage Source ................12

Figure 3.2B Wiring Diagram for Remote Programming via External Resistance ..........12

Figure 3.3 Remote Monitor Test Points .......................................................................13

Figure 3.4 Remote Control of High Voltage On and Off ............................................13

Figure 3.5 External Inhibit Interface Circuit ................................................................14

Figure 3.6 External Interlock Interface Circuit ............................................................14

Figure 3.7 Remote High Voltage On and Off Indicator Circuit ....................................... 15

Figure 3.8 Remote Indicators Interface ............................................................................ 16

Figure 5.7 Instant On Option ............................................................................................ 21

LIST OF TABLES

Table 1.1 SLS Options ................................................................................................3

Table 3.1 System Cables .............................................................................................11

Table 3.2 Rear Panel Interface 25 pin Mini D Connecter Pin Out .............................12

APPENDIX

A. Specification Controls (Custom Models Only)

SLS SERIES MANUAL III 118132-001 RevA

Chapter 1

INTRODUCTION

1.1 Description of the SLS Series

he SLS Series of high voltage power supplies
provides very well regulated, low ripple high voltage

T

in a highly efficient, compact design. The
improvements in size and performance over traditionally
high voltage power supplies are due to the resonant
topology and unique control circuitry of the SLS Series.
A proprietary control system maintains high frequency
over the operating output range. High frequency
operation allows a dynamic response time of less than 5
milliseconds, and one of the lowest ripple specifications
in the industry. The combination of the proprietary
control and protection circuitry enables the supplies to
operate under arcing and extreme transient conditions
without damage or interruptions.

The SLS Series offer outputs from 160kV to 360kV via
an inverter chassis and separate high voltage “stack”
assembly. The necessity of the stack is simple, as output
voltages increase to 160kV and beyond, economical and
reliable cable/connecter assemblies become less available
and more problematic to incorporate. The solution is to
remove the cable/connecter assembly and to make the
output voltage available via the top of a separate air
insulated high voltage stack assembly. SLS units typically
have two assemblies: the inverter chassis and the air
insulated high voltage stack.

Danger – Electrocution Hazard!

The top corona dome assembly of the SLS is at high
voltage. It is the responsibility of the user to:

a) Make appropriate electrical connection to the

corona dome assembly.

b) Assure the corona dome assembly is adequate to

suppress corona in their particular usage and
application, additional customer provided corona
relief might be required.

c) Assure adequate air insulation spacings are used

in the setup and mounting of the stack assembly
(minimum of 1 inch for each 10kV of high
voltage).

d) Make certain the entire high voltage stack

assembly in contained in a grounded, protective

Faraday Cage with an interlocked access door.

SLS units generate lethal voltages; they require
appropriate high voltage safety knowledge to safely setup
and use. If you are not properly trained and qualified:
STOP! DO NOT PROCEED! DO NOT USE THIS
EQUIPMENT!

SLS SERIES MANUAL 1 118132-001 RevA

1.2 Standard Features

The SLS Series incorporates several standard features
designed to optimize user satisfaction and safety.

 SLOW START: This feature provides a gradual

increase in high voltage until the preset operating

point is reached. The default slow start time is set for

6 seconds. Other slow start times are available as an

option at time of order.
 ARC DETECT / ARC QUENCH / ARC COUNT:

These features allow the user to tailor the power

supply to meet specific needs in dynamic load

applications. If an arc occurs, the output is inhibited

for approximately one second, and then the output is

ramped up to the preset level with the slow-start

circuitry. See Chapter 3 for operating details and

information for user customization of these features.
 INTERNAL FAULT PROTECTION: The SLS

Series continually monitors internal circuits critical to

the proper operation of the power supply. In the

event that one of these circuits does not function

correctly, the fault detection circuit latches the

appropriate fault on the front panel display and turns

off the output and reverts the unit to the POWER

DOWN mode, see Chapter 3 for details.
 INDICATOR LAMPS: HIGH VOLTAGE OFF

AND HIGH VOLTAGE ON indicators is provided.

1.2.1 Remote Operating Features

 REMOTE PROGRAMMING: Allows remote

adjustment of the output voltage and current via an

external voltage source.
 REMOTE MONITOR: Allows remote monitoring

of the output voltage and current.
 REMOTE HIGH VOLTAGE CONTROL:

Allows remote control of HIGH VOLTAGE ON and

HIGH VOLTAGE OFF. Signals are also provided

for remote indication of HV ON or HV OFF status.
 EXTERNAL INHIBIT: A control signal that will

inhibit the high voltage output is provided on the

external interface. A logic low or ground will inhibit

the high voltage output and a logic h igh or ope n; will

restore the high voltage output to the preset level.
NOTE: The External Inhibit circuit should NOT be used

for protection against injury or for safety interlock.

See External Interlock for this type of safety control.

the chassis for connection to a safety switch. The
unit will not operate unless the interlock circuit is
closed. During high voltage operation, opening the
interlock circuit will cause the High Voltage to shut
off. This circuit should be used for safety interlock
circuits.

1.2.2 System Status and Fault
Diagnostic Display

“Dead Front” type indictors provide the user complete
information of system operation and fault conditions. If a
fault occurs, the power supply will revert to the POWER
DOWN mode. This is indicated by both the red HV ON
and green HV OFF lamps turning off and a latched fault
being displayed on the fault diagnostic panel. To reset,
depress the green HV OFF switch or cycle the AC power.

 VOLTAGE (CONTROL): Indicates the output

voltage regulator circuit is maintaining voltage
regulation.

 CURRENT (CONTROL): Indicates the output

current regulator circuit is maintaining current
regulation.

 HV INHIBIT: Indicates that the high voltage

supply is being inhibited by either the EXTERNAL
INHIBIT or internal protection circuitry.

 INTLK CLSD: Indicates the EXTERNAL

INTERLOCK connections are in the closed position.
This also indicates closure of internal power supply
interlocks.

 INTKL OPEN: Indicates the EXTERNAL

INTERLOCK connections are in the open position.
This also indicates opening of internal power supply
interlocks, high voltage cannot be generated.

 OVERVOLT: Indicates the overvoltage protection

circuitry has caused the power supply to turn off.
Overvoltage protection is internally set to 110% of
the maximum rated output voltage.

 OVERCURR: Indicates the output current has

exceeded the programmed current trip level when the
AOL (Adjustable Overload Trip) or the OL
(Overload Trip) options are installed.

 ARC: Indicates that an arc has occurred within the

previous one second or that the ARC COUNT/TRIP
has shutdown the power supply.

 EXTERNAL INTERLOCK: Interlock connections

are provided on the external interface on the rear of

SLS SERIES MANUAL 2 118132-001 RevA

 RGLT ERR: Indicates a failure in the voltage or

current regulation circuitry. This fault usually occurs
when there is a lack of output power to maintain
regulation.

The options available are listed in Table 1.1. See Section
5 for more information on these options along with
operating and set-up instructions. With few exceptions,
these options and modifications can be retrofitted to your
power supply at the factory. For price and retrofit
arrangements, contact the Spellman Sales Department.

1.3 Options

AOL Adjustable Overload Trip (0-103%)

OL Overload Trip (103%)

APT Adjustable Power Trip

AT Arc Trip

CPC Constant Power Control

SS(X) Non-Standard Slow Start (X = seconds)

NSS No Slow Start

IO Instant ON

(200) 200Vac, ± 10%, three phase input voltage

DPM
4

SL Slides

EFR External Fault Relay

BFP Blank Front Panel

4-1/2 Digit ( 1 LSD) Digital Panel
Meter

Table 1.1 SLS Options

SLS SERIES MANUAL 3 118132-001 RevA

1.4 Interpreting the Model Number

The model number of the power supply describes its
capabilities. After the series name is:

1. the maximum voltage (in kV).

2. the polarity of the unit: positive (P) or negative (N).

3. the maximum output (in watts).

4. the option codes for all options that are included.

Custom units have an X number after the option codes.

SLS 260 P 2000 / AT / X (#)

Series

Name

Maximum

Voltage

Polarity

Maximum

Option

Custom

“X”

Number

Power

SLS SERIES MANUAL 4 118132-001 RevA

Chapter 2

INSPECTION & INSTALLATION

nitial inspection and preliminary checkout procedures
are recommended. For safe operation, please follow

I

the step-by-step procedures described in Chapter 3,

Operating Systems.

2.1 Initial Inspection

Inspect the package exterior for evidence of damage due
to handling in transit. Notify the carrier and Spellman
immediately if damage is evident. Do not destroy or
remove any of the packing material used in a damaged
shipment.

After unpacking, inspect the assemblies for visible
damage.

Standard Spellman SLS Series high voltage power
supplies and components are covered by warranty.
Custom and special order models (with an X suffix and
the model number) are also covered by warranty.

2.2 Mechanical Installation

Units in the SLS Series are typically comprised to two
parts: the inverter rack and the high voltage output stack.

Inverter Rack:

The inverter rack has front panel holes for standard EIA
rack mounting, it is recommended to support the chassis
by guides or slides. Slides are available for ease of
servicing (SL option).

High Voltage Output Stack:

The high voltage output stack is an air insulated high
voltage multiplier assembly with ground at the bottom of

the mounting plate assembly and the high voltage output
at the top of the corona dome assembly. The high voltage
output stack is typically vertically mounted and must be
mechanically secured via the grounded mounting plate.
Customers must make the appropriate high voltage
connection to the stack via mechanical/electrical means at
the uppermost corona dome assembly.

Danger – Electrocution Hazard!

The top corona dome assembly is at high voltage. It is the
responsibility of the user to:

a) Make appropriate electrical connection to the

corona dome assembly.

b) Assure the corona dome assembly is adequate to

suppress corona in their particular usage and
application, additional customer provided corona
relief might be required.

c) Assure adequate air insulation spacings are used

in the setup and mounting of the stack assembly
(minimum of 1 inch for each 10kV of high
voltage).

d) Make certain the entire high voltage stack

assembly in contained in a grounded, protective

Faraday Cage with an interlocked access door.

SLS units generate lethal voltages; they require
appropriate high voltage safety knowledge to safely setup
and use. If you are not properly trained and qualified:
STOP! DO NOT PROCEED! DO NOT USE THIS
EQUIPMENT!

SLS SERIES MANUAL 5 118132-001 RevA

Figure 2.1 – SLS Series Typical Dimensions

(SLS180P2000 shown)

SLS SERIES MANUAL 6 118132-001 RevA

Chapter 3

OPERATING INSTRUCTIONS

3.1 Operation

WARNING

THIS EQUIPMENT GENERATES DANGEROUS

VOLTAGES THAT MAY BE FATAL.

PROPER GROUNDING OF ALL HIGH VOLTAGE

EQUIPMENT IS ESSENTIAL.

WARNING

BEFORE CONNECTING THE POWER SUPPLY

TO THE AC LINE, FOLLOW THIS STEP BY STEP

PROCEDURE.

DO NOT CONNECT THE POWER SUPPLY TO

THE AC LINE UNTIL STEP G IS REACHED.

Failure to follow these procedures may void the warranty.
A) Insure the Circuit Breaker is in the OFF position (0).
B) Check the input voltage rating on the nameplate of

the supply and make certain that this is the rating of
the available power source. Standard SLS Series
units operate on 220Vac, three phase.

C) PROPER GROUNDING TECHNIQUES: The E1

ground stud on the rear of the inverter chassis must
be connected to whatever customer system ground is
used: cold water pipe ground, electrical conduit
ground, steel building girder ground, ground rod
ground, etc. This customer provided system ground
cable should be a heavy gauge, mechanically secure
connection. See Figure 3.1 for a typical operating set­up.

The “bottom end” of the load must be connected to
the ground stud on the bottom of high voltage stack
baseplate using a heavy gauge and mechanically
secure customer provided load return cable.

SLS units are provided with a four conductor line
cord (three phases and safety ground). No specific
phase orientation is required.

D) Electrically/mechanically attach the high voltage

stack assembly corona dome to the load as seen fit
for the application on hand.

E) OPTIONS NOTE: See Section 5 for hook-up and

operating instructions for the options on your unit.
Custom models may also require set-up changes.

F) For initial turn-on, rotate the KILOVOLT control

fully counter-clockwise to the zero voltage position.
Rotate the MILLIAMPERES control fully clockwise
to the maximum position.

G) The input power cable may now be connected to the

AC power line.

H) Switch the front panel circuit breaker to the ON

position (I). (If the supply is to be turned off for an
extensive period of time, the line cord should be
disconnected). The front panel lights should
illuminate. The unit is now in the HIGH VOLTAGE
OFF mode. The green HIGH VOLTAGE OFF light
should be illuminated.

I) Depress and hold the green HIGH VOLTAGE OFF

switch. The front panel meters will now read the
preset value of the KILOVOLT dial and the
MILLIAMPERES dial (or remote programming
voltages, if used). To preset the desired level of
current and voltage during operation, hold in the
green HIGH VOLTAGE OFF switch and rotate the
appropriate dial while noting the corresponding
meter reading. Release the green HIGH VOLTAGE
OFF switch.

NOTE: No actual output is being produced at this stage.
J) Depress the red HIGH VOLTAGE ON switch. The

switch should illuminate and the output will slow
start to the preset level output voltage and/or output
current.

SLS SERIES MANUAL 7 118132-001 RevA

NOTE: The SLS Series is equipped with a slow start

circuit that ramps the output up to its maximum
setting in approximately 6 seconds after the red
HIGH VOLTAGE ON switch is depressed.

K) To terminate the generation of output power, depress

the green HIGH VOLTAGE OFF switch. In the
HIGH VOLTAGE OFF mode the power supply’s
fault, front panel monitoring and interface circuits are
still active.

L) To turn off the power supply, turn the circuit breaker

to the off position (0).
NOTE: If a power supply or system fault occurs, the

unit will revert to the POWER DOWN mode, where
the output power will be turned off. The green HV
OFF lamp will not be illuminated; a red latched fault
should be indicated on the fault diagnostic panel. To
clear and reset the fault, depress the green HV OFF
switch or cycle the AC input power.

AFTER TURN OFF, DO NOT TOUCH ANYTHING

CONNECTED TO THE HV OUTPUT UNTIL THE

CAPACITANCE HAS BEEN DISCHARGED!

LOAD CAPACITANCE MAY BE DISCHARGED BY

SHORTING TO GROUND WITH A SAFETY

THE VOLTMETER ON THE POWER SUPPLY

FRONT PANEL DOES NOT READ THE OUTPUT

VOLTAGE WHEN THE AC LINE POWER IS

TURNED OFF, EVEN IF A CHARGE STILL

EXISTS ON THE LOAD.

ALWAYS OPERATE THE UNIT WITH THE

CHASSIS TOP COVER ON.

A fan maintains safe operating temperature in the inverter
chassis by drawing air over the circuit components. The
cover must be on in order to direct the air flow over the
areas that need cooling. In operation, the unit must be
placed so that the air intake and the fan exhaust are clear
of obstructions.

WARNING

DISCHARGE STICK.

WARNING

CAUTION

3.2 Standard Features

Whenever possible, electrical isolation should be used
when interfacing with any high voltage power supply.
For power control signals such as EXTERNAL
INTERLOCK, HIGH VOLTAGE OFF, and HIGH
VOLTAGE ON, isolated relay contacts should be used.
For status and control signals such as HIGH VOLTAGE
ON, HIGH VOLTAGE OFF, and EXTERNAL INHIBIT,
etc., opto-isolation should be used. If possible, analog
programming and monitoring signals should be isolated
via analog isolation amplifiers. Spellman application
engineers are available to assist in answering any
questions. All interface cables should be properly
shielded. All power supply signals should be referenced
to the power supplies signal ground on the external
interface connecter.

 REMOTE PROGRAMMING: Allows remote

adjustment of the output voltage and current via an
external voltage source. In local control (front panel
control), jumpers are installed on the 25 pin D
external interface connecter J3 at the rear of the
chassis between J3-10 and J3-11 for voltage control
and between J3-8 and J3-9 for current control.

For remote programming, the jumpers are removed and a
positive polarity, ground referenced signal, from 0Vdc to
10Vdc, is applied to the appropriate terminals.
Programming signals should be referenced to J3-1, signal
ground. By adjusting the voltage source from 0Vdc (zero
output) to 10Vdc (full rated output), the desired output
can be selected. See Figure 3.2A on page 13 for the
wiring diagram and specifications.

An alternate method of controlling the output remotely is
by using external resistance, such as a potentiometer or a
resistor network. For remote control the jumpers are
removed and the desired resistor configuration installed.
See Figure 3.2B on page 13 for the wiring diagram.

 REMOTE MONITOR: Test points are made

available at the 25 pin D connecter on the rear of the
chassis for monitoring the voltage and current output.
The test points are always positive regardless of the
output polarity where 0Vdc to 10Vdc equals 0 to
100% of the output, 1%. Test points have an output
impedance of 5k ohms. See Figure 3.3 on page 14
for the test point designation.

SLS SERIES MANUAL 8 118132-001 RevA

 REMOTE CONTROL: Remote control of the

HIGH VOLTAGE ON and HIGH VOLTAGE OFF
can be accomplished via the rear panel interface.
HIGH VOLTAGE OFF and HIGH VOLTAGE ON
can be controlled by momentary normally closed and
normally open contacts respectively. See Figure 3.4
on page 14 for the recommended interface.

 EXTERNAL INHIBIT: Allows the user to inhibit

the power supply output without switching HIGH
VOLTAGE OFF control. This circuit can be used to
generate fast slewing output waveforms or control of
high voltage generation as in laser and capacitor
discharge applications. The maximum inhibit rate
should not exceed 5Hz. Consult the factory for
higher repetition rates or high pulse load
applications. See Figure 3.5 on 15 for the
recommended interface circuit.

WARNING

IT IS EXTREMELY DANGEROUS TO USE THIS

INHIBIT CIRCUIT TO STOP HIGH VOLTAGE

GENERATION FOR THE PURPOSE OF

SERVICING OR APPROACHING ANY AREA

OR LOAD CONSIDERED UNSAFE

DURING NORMAL USE.

 EXTERNAL INTERLOCK: External interlock

connections are provided on J3-3 and J3-4 on the 25
pin D connecter for connection to a safety interlock
switch. The unit will not operate unless the interlock
circuit is closed. If the interlock is not being used,
the jumper installed on the two pins before shipping
must be in place. If the jumper is missing, or there is
an opening between the interlock terminals high
voltage cannot be generated. During high voltage
operation if these connections are opened the unit
will revert to the HIGH VOLTAGE OFF mode.

Subsequent closing of the interlock circuit will NOT
return the unit to the HIGH VOLTAGE ON mode.
This must be accomplished by depressing the HIGH
VOLTAGE ON switch. See Figure 3.6 on page 15
for the recommended interface circuits.

 ARC DETECT / ARC QUENCH / ARC COUNT:

The ARC INTERVENTION circuit senses dynamic
arcing or discharge conditions present at the output
load. If an arc occurs the output is inhibited for one
second, then the output is ramped up to the previous
set level. This ramp is based on the standard six
second slow start feature. The SLOW START ramp
circuit may be disabled by removing CR32 on the
Control/Power Pwb. Caution should be observed if
this feature is disabled. Discharge rates of greater
then 1Hz may cause excessive power dissipation in
the power supply’s output limiting resistors, voiding
the warranty.

The ARC COUNT feature will allow the user to program
the ARC fault parameters. The ARC indicator on the
front panel will illuminate for approximately one second
after each arc has occurred. The power supply can be
programmed to trip into the POWER DOWN mode if a
single arc occurs (AT Option).

The default setting is to trip the power supply into the
POWER DOWN mode if 8 arcs occur within a twenty
second period.

 REMOTE HIGH VOLTAGE ON & REMOTE

HIGH VOLTAGE OFF: Signals are provided for

remote monitoring of the HIGH VOLTAGE ON and
HIGH VOLTAGE OFF status. See Figure 3.7 on
page 16 for recommended interface.

 REMOTE MODE INDICATORS: Signals are

provided for remote indication of the control mode
status: voltage control or current control. See Figure

3.8 on page 17 for the recommended interface.

SLS SERIES MANUAL 9 118132-001 RevA

Figure 3.1 -- Typical Operating Setup

Item Description

W1 Inverter Output Cable
W2 Feedback Cable
W3 Ground Cable
4 Load Return Cable (customer provided)
5 System Ground Cable (customer provided)

Table 3.1 System Cables

SLS SERIES MANUAL 10 118132-001 RevA

J3 SIGNAL SIGNAL PARAMETERS

1 Power Supply Common Signal Ground
2 External Inhibit Ground = Inhibit, Open = HV ON
3 External Interlock +15V at Open, <15mA at Closed
4 External Interlock Return Return For External Interlock
5 Current Monitor 0 to 10V = 0 to 100% Rated Output
6 kV Test Point 0 to 10V = 0 to 100% Rated Output
7 +10V Reference +10.24V, 1mA Max
8 Remote Current Program In 0 to 10V = 0 to 100% Rated Output
9 Local Current Program Out Front Panel Program Voltage
10 Remote Voltage Program In 0 to 10V = 0 to 100% Rated Output
11 Local Voltage Program Out Front Panel Program Voltage
12 EFR (Common)

Optional External Fault Relay

13 EFR (Normally Open) Optional External Fault Relay
14 Local HV Off Out +15V at Open, < 25mA at Closed.

Connect to HV OFF For FP Operation

15 HV OFF 15V at Open, < 25mA at Closed.

Connect to Local HV Off Out For FP Operation

16 Remote HV ON +15V, 10mA Max = HV ON
17 Remote HV OFF Indicator 0 = HV ON, +15V, 10mA Max = HV OFF
18 Remote HV ON Indicator 0 = HV OFF, +15V, 10mA Max = HV ON
19 Remote Voltage Mode Open Collector 50V Max, 10mA Max On = Active
20 Remote Current Mode Open Collector 50V Max, 10mA Max On = Active
21 spare spare
22 Remote PS Fault 0 = Fault, +15V, 0.1 Ma Max = No Fault
23 +15V Output +15V, 100mA Max
24 Power Supply Common Signal Ground
25 Shield Return Chassis Ground

Table 3.2 - Rear Panel Interface 25 pin Mini D

SLS SERIES MANUAL 11 118132-001 RevA

Figure 3.2A -- Wiring Diagram for Remote Programming via Voltage

Figure 3.2B -- Wiring Diagram for Remote Programming via External

SLS SERIES MANUAL 12 118132-001 RevA

Potentiometers

It is recommended that analog signals be
isolated via isolation amplifiers. All cables
should be shielded with the shield being
returned to the chassis ground of the high
voltage power supply.

Figure 3.3 -- Remote Monitor Test Points

S1 must be closed to enable HIGH VOLTAGE.
Momentary closure of S2 will enable HIGH
VOLTAGE ON.
Opening S1 will disable HIGH VOLTAGE ON and
switch the unit to the HIGH VOLTAGE OFF mode.

Figure 3.4 Remote Control Of High Voltage On and

High Voltage Off Interface

It is recommended to use relay contacts for S1 and
S2. Relays should be located as close as possible to
the high voltage power supply. Coils should be
driven from isolated sources. Signals are at 15Vdc,
25mA max., and are only to be used for contact

SLS SERIES MANUAL 13 118132-001 RevA

Figure 3.5 -- External Inhibit Interface Circuit

Figure 3.6 -- External Interlock Interface

SLS SERIES MANUAL 14 118132-001 RevA

Figure 3.7 -- Remote High Voltage On and

Remote High Voltage off Indicator

SLS SERIES MANUAL 15 118132-001 RevA

Figure 3.8 -- Remote Mode Indicators Interface

SLS SERIES MANUAL 16 118132-001 RevA

Chapter 4

PRINCIPLES OF OPERATION

The SLS Series of high voltage power supplies utilizes
sophisticated power conversion technology. A variety of
analog, digital and power conversion techniques are used.
The intention of the Principles of Operation is to
introduce the basic function blocks that comprise the SLS
power supply. For details on a specific circuit, consult
Spellman’s Engineering Department.

The SLS power supply is basically a low voltage AC to
high voltage DC power converter. Within the power
supply, conversions of AC to DC, then to high frequency
AC, then to high voltage DC take place. By reviewing
further the sub-assemblies, a basic understanding of the
process can be gained.

4.1 Chassis

The SLS Series is a compact, high efficiency, high
voltage power supply. The unit can supply up to 2000
watts of DC power. Output voltages from 160kV to
360kV can be generated.

The energy levels used and generated by the
power supply can be lethal! Do not attempt to
operate the power supply unless the user has a
sufficient knowledge of the dangers and hazards
of working with high voltage. Do not attempt to
approach or touch any internal or external
circuits or components that are connected or
have been connected to the power supply. Be
certain to discharge any stored energy that may
be present before and after the power supply is
used. Consult IEEE recommended practices for
safety in high voltage testing #510-1983.

WARNING

4.2 Line Rectification

And Filtering

Basic three phase rectification and capacitive filtering
provides the DC rail voltage for the high frequency
inverter.

SLS SERIES MANUAL 17 118132-001 RevA

Circuit protection is provided by a front panel fast acting
magnetic trip type circuit breaker. The line input is
connected directly to the line side of the circuit breaker
whereas the load side is connected to the
CONTROL/POWER PWB. The load side of the breaker
is also connected to a step-down type line transformer
which provides voltages for housekeeping and control
circuit power.

LINE VOLTAGE IS PRESENT WHENEVER THE

POWER SUPPLY IS CONNECTED TO EXTERNAL

LINE VOLTAGES. BE SURE TO DISCONNECT

THE LINE CORD BEFORE OPENING THE UNIT.

ALLOW 5 MINUTES FOR INTERNAL

CAPACITANCE TO DISCHARGE BEFORE

REMOVING ANY COVER.

When the circuit breaker is ON, voltage is applied to an
isolated three phase bridge rectifier, which contains the
diodes used for line voltage rectification. The output of
this bridge rectifier is connected to a capacitiv e filter to
reduce the line related ripple components. The filter
capacitors are initially charged through a resistive inrush
limiter to prevent nuisance tripping of the circuit breaker
during initial turn on.

Approximately 3 seconds after the circuit breaker is
closed, a relay is energized to short the resistive inrush
limiter. This ±150Vdc rail voltage is supplied to the high
frequency inverter.

The DC rails are connected to the high frequency rail
capacitors. These capacitors are high frequency, low loss
type, which provides the energy storage for the high
frequency inverter.

WARNING

4.3 Inverter

The inverter is a series resonant, series/parallel loaded
topology. A proprietary control scheme is used for
regulating the power generated from the resonant IGBT
inverter. These power devices provide high frequency
switching to control the resonant current flow. The
typical resonant operating period is approximately 10
microseconds. The gate control for the IGBT’s is
provided by the circuitry located on the
CONTROL/POWER PWB. The CONTROL/POWER
PWB also provides circuitry for sensing simultaneous
conduction and overcurrent conditions in the inverter.

4.4 High Voltage Transformer

The output of the Inverter is connected to the primary of
the step up High Voltage Transformer. The High Voltage
Transformer is located in the “stack” assembly beneath
the upper grounded baseplate. The inverter output is
typically an AC high frequency signal about 300 volts in
magnitude. Due to the high frequency, high current
flowing in this cable it is not recommended to try to
modify and/or lengthen the inverter drive cable that
connects the inverter rack and the high voltage stack.

4.5 High Voltage Stack Assembly

The High Voltage Stack Assembly will vary depending
upon the specific model of SLS ordered. The stack is
comprised of an assembly of encapsulated interlocking
high voltage multiplier “wafers”, an encapsulated filter
assembly and an encapsulated voltage feedback divider.

Each encapsulated high voltage multiplier wafer is rated
for 20kV, so an SL160P2000 would use eight (8)
interlocking multiplier wafers to generate the required
output voltage.

The output filter assembly attenuates ripple by virtue of
an R-C type filter. The voltage feedback divider provides
a representative sample of the actual high voltage output
for regulation and monitoring purposes. Current feedback
for regulation and monitoring is provided by a current
sense resistor connected at the low voltage end of the
multiplier stack assembly.

4.6 Control/Power PWB

The majority of control circuits for power supply
operation are located on the CONTROL/POWER PWB.
+15Vdc, -15Vdc, and +10Vdc is generated on the
CONTROL/POWER PWB. High Voltage On/Off control
is accomplished by relay K3, and its associated circuitry.
Interlock control is provided by relay K4.

Voltage feedback from the high voltage divider is sent to
the control board via a mass terminated ribbon cable.
Gain adjustment is provided on the HV FDBK PWB.
The KV feedback signal is sent to the front panel DVM
and to the REAR PANEL interface 25 pin D connecter
for remote monitoring. Relay K2 provides switching
between feedback and program signal for the front panel
DVM’s. This allows the user to preset the desired output
before energizing high voltage.

SLS SERIES MANUAL 18 118132-001 RevA

Program voltages are typically ramped up to set level by a
slow start circuit.

An arc intervention circuit provides sensing, quench and
indications of arc conditions. Consult the chapter three
for a detailed description of the arc sense control.

Current feedback is generated via the use of a current
sense resistor located on a printed circuit board in the
High Voltage Stack Assembly. Calibrated feedback is
then sent to the applicable circuitry located in the inverter
rack.

U12 and U13 circuits provide visual indication of the
voltage control mode and current control mode. These
signals are sent to the FRONT PANEL ASSEMBLY for
front panel status indication.

The resonant control circuitry consists of a voltage to
frequency and a voltage to pulse width converter. U17
generates all frequency and pulse width control signals.
U16 provides specific control functions for the resonant
control.

Power supply inhibit circuits are provided by U22 and
relay K3. System Fault control and indication is provided
by U19, U20 and U21, and associated circuitry.
Diagnostic signals are latched and then sent to the
FRONT PANEL ASSEMBLY for status indication.

4.7 Front Panel Assembly

Front Panel controls, meters and status indications are
connected to the FRONT PANEL PWB. The FRONT
PANEL PWB interfaces directly to the
CONTROL/POWER PWB via the use of a mass
terminated ribbon connecter.

4.8 Options

Due to the many variations of models and options
provided in the SLS Series, details of actual circuits used
may differ slightly from the above descriptions. Consult
Spellman’s Sales Department for questions regarding the
principles of operation for the SLS Series.

SLS SERIES MANUAL 19 118132-001 RevA

Chapter 5

OPTIONS

he options available for this power supply are
described in this section. Interface diagrams are

T

shown where required. Options are specified by
including the option code in the model number as
described in Section 1.3.

5.1 Adjustable

Overload Trip --AOL

The overload trip protection feature rapidly shuts down
the high voltage output when the current exceeds the limit
set by the current control dial on the front panel (or
remote programming signal, if used). A fast acting circuit
inhibits the generation of high voltage and reverts the unit
to POWER DOWN mode, illuminating the red OVER
CURRENT fault indicator. When adjustable overload
trip is provided, it replaces the standard current regulation
feature.

5.2 200Vac Single Phase

Input--200

SLS Series power supplies with the 200Vac input option
will operate from an input voltage of 200Vac 10%,
50/60Hz, single phase.

5.3 No Slow Start--NSS

5.5 Arc Trip Option--AT

When this option is ordered, the Arc Count circuit is set
so the unit trips to POWER DOWN after 1 arc, displaying
an arc fault. One of the applications for this option is for
sensing a material breakdown under an applied high
voltage.

5.6 Instant On--IO

When the Instant On Option is ordered, the High Voltage
is enabled as soon as line voltage is applied when the
circuit breaker is in the ON position. (See Figure 5.7)

To enable Instant On, keep the jumper between J3-14 and
J3-15 attached. Connect an additional jumper from J3-15
to J31-16 as shown in Figure 5.7.

The Power Supply will generate programmed

High Voltage whenever the circuit breaker is in

the ON position, and line voltage is applied.

CAUTION

The no slow start option causes the output voltage of the
power supply to rise (typically within 50 mS) to the rated
voltage upon depressing the red HIGH VOLTAGE ON
switch.

5.4 Non-Standard Slow

Start--SS(x)

The non-standard slow start option allows the gradual rise
time of the output voltage to be different from the
standard of six seconds. To order the option place the
time desired in seconds after the suffix letter, i.e. SS (10)
denotes a 10 second rise time.

SLS SERIES MANUAL 20 118132-001 RevA

Figure 5.6 -- Instant ON

5.7 External Fault Relay Option--

EFR

The external fault relay option provides a set of customer
accessible relay contacts that are controlled by the fault
status circuitry of the applicable SLS Series power
supply. A standard SLS power supply will revert to the
“power down” mode with a visual front panel indication
if any of the following fault conditions occur:

 Overvoltage: Greater than 110% of maximum

output voltage was produced by the power supply.
 Overcurrent: Greater than 104% of maximum

output current was produced by the power supply or

the AOL circuitry was activated.
 Overtemperature: Excessive temperature has been

sensed within the chassis.

 Arc (Shutdown): Arc sensing circuit has shut down

the supply due to excessive arcing.

 Overpower: The power supply has exceeded the

internally set power limit level, if such circuitry is
installed.

With the installation of the EFR option if any of these
faults occur, a relay will be activated to provide a remote
indication that the power supply has reverted to the
“Power Down” mode. The common and normally open
contacts are provided. Relay contacts are rated at 1A at
30Vdc or 0.5A at 48Vac.

Connections on the rear panel interface 25 pin D
connecter can be made as follows:

J3-12 Relay Common
J3-13 Normally Open
Resetting the front panel latched fault indicator and EFR

relay is accomplished by depressing the green front panel
HV OFF switch, which reverts the power supply back to
the “standby” mode. Removal and reapplication of the
AC line input voltage will also reset any fault.

The circuitry and components required for the EFR
option are installed at the factory when this option is
ordered.

5.8 Custom Designed Models-X#

Units built to customer specification are assigned an X
number by the factory. If this unit is an X model, a
specification control sheet is added at the end of this
instruction manual.

Spellman welcomes the opportunity to customize units to
fit your requirements or to develop new products for your
applications. Contact the Spellman Sales Department with
your needs at [e-mail]

 Regulation Error: Lack of required output power to

maintain regulation

SLS SERIES MANUAL 21 118132-001 RevA

Chapter 6

MAINTENANCE

his section describes periodic servicing and

performance testing procedures.

T

WARNING

THIS POWER SUPPLY GENERATES VOLTAGES

THAT ARE DANGEROUS AND MAY BE FATAL.

OBSERVE EXTREME CAUTION WHEN

WORKING WITH HIGH VOLTAGE.

6.1 Periodic Servicing

Approximately once a year (more often in high dust
environments), disconnect the power to the unit, wait 5
minutes and remove the top cover. Use compressed air to
blow dust out of the inside of the unit. Be sure that the
fan is not obstructed and spins freely. The fan has sealed
bearings and does not need lubrication. Be sure to
replace the top cover before operating for proper cooling.

6.2 Performance Test

WARNING

HIGH VOLTAGE IS DANGEROUS.

ONLY QUALIFIED PERSONNEL SHOULD

PERFORM THESE TESTS.

High voltage test procedures are described in Bulletin
STP-783, Standard Test Procedures for High Voltage

Power Supplies. Copies can be obtained from the

Spellman website. Test equipment, including an
oscilloscope, a high impedance voltmeter, and a high
voltage divider such as the Spellman HVD-200 or HVD­400, is needed for performance tests. All test components
must be rated for operating voltage.

6.3 High Voltage Dividers

High voltage dividers for precise measurements of output
voltage with accuracy up to 0.1% are available. An
HVD-100 is used for voltages up to 100kV, HVD-200
measures up to 200kV and the HVD-400 measured up to
400kV. The Spellman HVD Series is designed for use
with differential voltmeters or high impedance digital
voltmeters. The high input impedance is ideal for
measuring high voltage low current sources, which would
be overloaded by traditional lower impedance dividers.
The data sheet for Spellman’s series of HVD dividers can
be viewed by clicking here.

SLS SERIES MANUAL 22 118132-001 RevA

Chapter 7

REPLACEMENT PARTS

7.1 Replacement Parts

Contact the Spellman Customer Service Department for
parts lists for specific models.

Parts and subassemblies for Spellman’s high voltage
power supplies are available. It is recommended that only
qualified personnel perform the repairs. High voltage is
dangerous; even minor mistakes in repairs can have
serious consequences.

When requesting parts, please provide the complete
model number and serial number of the power supply in
question.

7.2 Correspondence and

Ordering Spare Parts

Each power supply has an identification label on the rear
of the chassis that bears its model and serial number.

When requesting engineering or applications information,
please state the model and serial number of the power
supply. If specific components or circuit sections are
involved in the inquiry, it is helpful to provide
information clearly identifying the item in question.

When ordering spare parts, please specify the part
number, the component function, and the model and serial
number of the unit.

SLS SERIES MANUAL 23 118132-001 RevA

Chapter 8

FACTORY SERVICE

8.1 Warranty Repairs

During the Warranty period, Spellman will repair all units
free of charge. The Warranty is void if the unit is worked
on by other than Spellman personnel. See the Warranty in
the rear of this manual for more information. Follow the
return procedures described in Section 8.2. The customer
shall pay for shipping to and from Spellman.

8.2 Factory Service Procedures

Spellman has a well-equipped factory repair department. If
a unit is returned to the factory for calibration or rep air, a
detailed description of the specific problem should be
attached.

For all units returned for repair, please obtain an
authorization to ship from the Customer Service
Department, either by phone or mail prior to shipping.
When you call, please state the model and serial numbers,
which are on the plate on the rear of the power supply, and
the purchase order number for the repair. A Return
Material Authorization Code Number (RMA Number) is
needed for all returns. This RMA Number should be
marked clearly on the outside of the shipping container.
Packages received without an RMA Number will be
returned to the customer. The Customer shall pay for
shipping to and from Spellman.

8.3 Ordering Options and
Modifications

Many of the options listed in Chapter 5 can be retrofitted
into Spellman’s power supplies by our factory. For prices
and arrangements, contact the Spellman Sales Department.

8.4 Shipping Instructions

All power supplies returned to Spellman must be sent
shipping prepaid. Pack the units carefully and securely in a
suitable container, preferably in the original container, if
available. The power supply should be surrounded by at
least four inches of shock absorbing material. Please return
all associated materials, i.e. high voltage output cables,
interconnection cables, etc., so that we can examine and test
the entire system.

All correspondence and phone calls should be directed to:
Spellman High Voltage Electronics Corp.

475 Wireless Boulevard
Hauppauge, New York 11788
TEL: [phone] FAX: [phone]

E-Mail: [e-mail]

A preliminary estimate for repairs will be given by phone
by Customer Service. A purchase order for this amount is
requested upon issuance of the RMA Number. A more
detailed estimate will be made when the power supply is
received at the Spellman Repair Center. In the event that
repair work is extensive, Spellman will call to seek
additional authorization from your company before
completing the repairs.

SLS SERIES MANUAL 24 118132-001 RevA

SPELLMAN HIGH VOLTAGE ELECTRONICS

WARRANTY

Spellman High Voltage Electronics (“Spellman”) warrants that all power supplies it manufactures will be

free from defects in materials and factory workmanship, and agrees to repair or replace, without charge, any
power supply that under normal use, operating conditions and maintenance reveals during the warranty
period a defect in materials or factory workmanship. The warranty period is twelve (12) months from the
date of shipment of the power supply. With respect to standard SL power supplies (not customized) the
warranty period is thirty-six (36) months from the date of shipment of the power supply.

This warranty does not apply to any power supply that has been:

• Disassembled, altered, tampered, repaired or worked on by persons unauthorized by Spellman;

• subjected to misuse, negligent handling, or accident not caused by the power supply;

• installed, connected, adjusted, or used other than in accordance with the original intended application and/or

instructions furnished by Spellman.

THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
THOSE OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

The buyer’s sole remedy for a claimed breach of this warranty, and Spellman’s sole liability is limited, at

Spellman’s discretion, to a refund of the purchase price or the repair or replacement of the power supply at
Spellman’s cost. The buyer will be responsible for shipping charges to and from Spellman’s plant. The

buyer will not be entitled to make claim for, or recover, any anticipatory profits, or incidental, special or
consequential damages resulting from, or in any way relating to, an alleged breach of this warranty.

No modification, amendment, supplement, addition, or other variation of this warranty will be binding unless
it is set forth in a written instrument signed by an authorized officer of Spellman.

For an authorization to ship contact Spellman’s Customer Service Department. Please state the model and
serial numbers, which are on the plate on the rear panel of the power supply and the reason for return. A
Return Material Authorization Code Number (RMA number) is needed from Spellman for all returns. The
RMA number should be marked clearly on the outside of the shipping container. Packages received without
an RMA Number may delay return of the product. The buyer shall pay shipping costs to and from Spellman.
Customer Service will provide the Standard Cost for out-of-warranty repairs. A purchase order for this
amount is requested upon issuance of the RMA Number (in-warranty returns must also be accompanied by
a “zero-value” purchase order). A more detailed estimate may be made when the power supply is received
at Spellman. In the event that the cost of the actual repair exceeds the estimate, Spellman will contact the
customer to authorize the repair.

Spellman will warrant for three (3) months or balance of product warranty, whichever is longer, the repaired
assembly/part/unit. If the same problem shall occur within this warranty period Spellman shall undertake all
the work to rectify the problem with no charge and/or cost to the buyer. Should the cause of the problem be
proven to have a source different from the one that has caused the previous problem and/or negligence of
the buyer, Spellman will be entitled to be paid for the repair.

For a complete listing of Spellman’s Global Service facilities please go to:
http://www.spellmanhv.com/customerservice/service.asp

Factory Service Procedures

Factory Service Warranty

Spellman Worldwide Service Centers

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