GX Series
25KW

AC-HVDC CONVERTERFAN
COOLED

The GX series is a range of enclosed, programmable, low ripple, high voltage power
supplies capable of supplying voltages up to 100kV and power to 25kW. The GX
Series are fast response units with tight regulation. They are air insulated thereby
offering a lower cost of life ownership, are lighter and are more environmentallyfriendly than potted or oil insulated alternatives.
The GX range has been designed for parallel operation up to 200kW and all versions
have Arc Quench & Arc Count features to protect both the load and PSU.
The GX Series are fully compliant with the following European Directives:
EN61010-1/IEC61010-1, SafetyApplications

EN61000-6-4, Conducted and Radiated Emissions
EN61000-6-2, Conducted and Radiated Immunity
2011/65/EU, Restriction of the use of Hazardous Substances (RoHS)
Units are CE marked to indicate compliance with the CE EMC, low voltage (LVD) andROHS directives.

High Power
E-beamIndustrial
Electronics

Semiconductor
Manufacturing

TechnologyDimensions
Features• 0 to 100% programmable voltage & current• Local, analog, & RS232/USB digital control. Ethernet is optional• 3 phase AC input. 480VAC standard, 380VAC & 415VAC optional• Output voltage & current regulated• Voltage & current monitor outputs• Operating temperature: 0°C to +40°C, no derating• Short circuit, arc, overload & thermal protection• Efficiency >80%
• Low ripple <0.1% RMS of rated voltage at full load
• CE marked for EMC, low Voltage (LVD) & ROHS directives• 3 year warranty

19.0” x 11U x 24.0” (482.6 x 11U x 609.6 mm)

GX Series

AC-HVDC CONVERTER

Models & Ratings
VoltageCurrent

Stored Energy

Output CableGX001R25.00 – 1kV

25.0A

5J

DS2232

GX1.5R16.5

0 – 1.5kV

16.5A

7J

DS2232

GX002N12.5

GX002R12.50 – 2kV

12.5A

7J

DS2232

GX003N8.3

GX003R8.30 – 3kV

8.35A

12J

DS2232

GX005P5.0

GX005N5.0

GX005R5.0

0 – 5kV

5.00A

12J

RG-8U

GX006P4.1

GX006N4.1

GX006R4.1

0 – 6kV

4.15A

16J

RG-8U

GX008P3.1

GX008N3.1

GX008R3.1

0 – 8kV

3.15A

12J

RG-8U

GX010P2.5

GX010N2.5

GX010R2.5

0 – 10kV

2.50A

17J

RG-8U

GX012P2.1

GX012N2.1

GX012R2.1

0 – 12kV

2.10A

22J

RG-8U

GX015P1.6

GX015N1.6

GX015R1.6

0 – 15kV

1.65A

17J

RG-8U

GX020P1.2

GX020N1.2

GX020R1.2

0 – 20kV

1.250A29J

RG-8U

Positive Polarity

Negative Polarity

Reversible Polarity(1)GX001P25.0

GX001N25.0

GX1.5P16.5

GX1.5N16.5

GX002P12.5
GX003P8.3

GX025P1.0

GX025N1.0

GX025R1.0

0 – 25kV

1.000A34J

RG-8U

GX030P835

GX030N835

GX030R835

0 – 30kV0.835A

48J

RG-8U

GX040P625

GX040N625

GX040R625

0 – 40kV

0.625A28J

RG-8U

GX050P500

GX050N500

GX050R500

0 – 50kV

0.500A

34J

RG-8U

GX060P415

GX060N415

GX060R415

0 – 60kV

0.415A

41J

RG-8U

GX070P360

GX070N360

GX070R360

0 – 70kV0.360A

48J

DS2121

GX080P315

GX080N315

GX080R315

0 – 80kV

0.315A

55J

DS2121

GX100P250

GX100N250

GX100R250

0 – 100kV

0.250A

69J

DS2121Model Configurator

Series Name

Polarity TypeP = Positive
N = NegativeR = Reversible

GX100P250ETH

Standard Options
SS = Slow start
ZR = Zero start
ETH = Ethernet
NC = Blank front panel
38 = 380VAC, 3-Phase input
41 = 415VAC, 3-Phase input

Output Voltage & Current
001|25.0 = 0 - 1kV/25.0A
1.5|16.5 = 0 - 1.5kV/16.5A
002|12.5 = 0 - 2kV/12.5A
003|8.3 = 0 - 3kV/8.35A
005|5.0 = 0 - 5kV/5.0A

006|4.1 = 0 - 6kV/4.15A
008|3.1 = 0 - 8kV/3.15A
010|2.5 = 0 - 10kV/2.5A
012|2.1 = 0 - 12kV/2.1A015|1.6 = 0 - 15kV/1.65A

020|1.2 = 0 - 20kV/1.25A
025|1.0 = 0 - 25kV/1.0A
030|835 = 0 - 30kV/0.835A
040|625 = 0 - 40kV/0.625A
050|500 = 0 - 50kV/0.5A

060|415 = 0 - 60kV/0.415A
070|360 = 0 - 70kV/0.36A
080|315 = 0 - 80kV/0.315A
100|250 = 0 - 100kV/0.25A

Notes:
1. For reversible polarity two high voltage chassis will be supplied both; a positive and a negative so usage depends on the required output.

2GX SeriesAC-HVDC CONVERTERSpecification
The specifications herein apply from 5% to 100% of rated voltage for a 25kW standalone power supply.

Input Rating

Analog Current Monitor

Standard 3 Phase, 480VAC (+/-) 10%, 48-63Hz, 35kVA max, less than 45A
RMS per phase. Inrush current is less than 50A peak. A five position terminal
strip is provided for AC line connection. Mains service must be protected withfuses or circuit breakers with a maximum rating of 175A .

0 to +10 V, equals 0 to Rated current, with an accuracy of 1% of reading +0.5% of rated. Output impedance is 10kOhm.

RS232/USB/Ethernet Programming and Monitor Resolution
0.025% of full scale for both the voltage and the current channels.

Efficiency

RS232/USB/Ethernet setting accuracy

Typically >80% at full load.

Voltage setting accuracy is better than 0.5% of setting + 0.2% of rated.

OutputContinuous, stable adjustment, from 0 to rated voltage or current by panel
mounted optical rotary encoder or by external 0 to +10V signals. Voltage
programming accuracy is 0.5% of setting + 0.2% of rated. Optical rotary encoder resolution: 0.025% of rated with “Fine Adjustment” mode selected. 0.25%
of rated with “Coarse Adjustment” mode (default).

RS232/USB/Ethernet reading accuracy
Voltage reading accuracy is 0.5% of reading + 0.2% of rated. Current reading
accuracy is 1% of reading + .5% of rated.

High Voltage Interlock

Better than 0.01% rating + 5mV/A for full load to no load variation.

An external contact, referenced to Common. It is a “must make” contact forthe output to be enabled. (Open = Output Off; Closed = Output ON). Theinterlock is normally a latching function for the High Voltage ON (HV ON)
command. It defaults to a non-latching toggle function when the “NC” option
is selected or when the HV ON button on the front panel is bypassed for thealternative remote command.

Current Regulation

Current Limit

Better than 0.5% of the rating for short circuit to rated output voltage variation, at any load condition.

When the rear panel switch, S1, is set to CURRENT LIMIT (CL), the power supply will limit and regulate the load current with automatic crossover between
voltage and current regulating modes.

Line Regulation
Better than 0.01% of rating for +/-10% input variation, constant load.

Static Voltage Load Regulation

Dynamic Voltage Regulation
Typical deviation is 2% of rating.
The recovery to within 1% of rating is 500μs and within 0.1% in 1 ms for loadtransients from 10% to 100% and 100% to 10%.

Current Trip

Ripple (RMS)

Over temperature

0.1% of rated voltage +1V RMS at full load.

Shuts down and latches the unit in OFF state upon exceeding the internallymeasured temperature threshold or sensing a defective fan. The fault indicator
will be activated.

Temperature CoefficientMax. 100ppm per deg C following 30min warm up.

When this switch is set to CURRENT TRIP (CT), the unit will shut down andlatch off when the load current equals or exceeds the programmed value.

Input Under Voltage

Stability
Voltage Rise Time ConstantWill prevent the Power Stage circuit from operating without all 3 line voltages
active. When this happens, the output will shut down and recovers automatically when the normal input line condition is restored. The fault indicator will
be activated during the shutdown period.

Typical 200 ms for 15kV to 100kV models and 50ms for 1kV to 12kV models,
using HV enable.

DC Under Voltage (DCUV)Max. 0.05% of rated over 8 hours’ time interval, following 30min warm up.

Decay time constant is function of the applied load. The decay time constantwill be equal to the rise time constant with a minimum load of 5%.

Will prevent the Power Stage circuit from operating with DC bus voltage
below the operating level When this happens, the output will shut down andrecovers automatically when the normal input line condition is restored. Thefault indicator will be activated during the shutdown period.

Polarity

Power Block Desaturation

Voltage Decay Time ConstantAvailable with either Positive or Negative polarity with respect to chassis
ground.

Parallel operation

The IGBT power block control has the capability to sense an excessive current
in its conduction state and turn off the conversion cycle to avoid a shoot thru
condition.

Up to 8 units can be connected in parallel providing active current sharing withdedicated master – slave configuration.

Analog Voltage Monitor
0 to +10 V, equals 0 to rated voltage, with an accuracy of .5% of reading +0.2% of rated. Output impedance is 10kOhm.

Specifications subject to change without notice.

3

GX Series

AC-HVDC CONVERTER

Specification (continued)
Arc Count
Internal circuitry senses the number of arcs caused by the external load
characteristics. If the rate of consecutive arcs exceeds approximately 1 persecond, for at least 5 arcs, the supply will turn off for approximately 5 seconds toallow clearance of the faulty load condition. Custom modifications of this feature
are available. Consult the factory.

Arc Quench
When an arc occurs, the output is inhibited for approximately 20ms to allow
clearance of the fault. Arc Quench can be removed as an option.

Front Panel Elements

Analog Customer Interface (Driver, Rear panel J3 connector)
Analog control signals
0 to 10 V, Voltage Program and Monitor, Current Program and Monitor and 10V
Reference.

Logic Control Signals
Implemented with TTL compatible, 0 to 5.5 V CMOS, positive logic circuitry.
HV ON RMT: implemented by a “Dry Contact” function. The momentary connection of these pins will bypass the HV ON button on the front panel and turn theoutput HV on.

Output voltage display: 3.5 Digits.

HV ENABLE input: Active in Remote Analog control. HIGH for HV Output Enable.

Output current display: 3.5 Digits.

MODE STATUS indicator: LOW/HIGH indicates that output is in Current/Voltage
Mode.

Indicator

Current Mode Indicator: Green LED
Voltage Mode Indicator: Green LED

FAULT indicator: Active HIGH, indicates a fault condition. The continuously
monitored faults are: Input under-voltage, DC under-voltage, Over Temperature,
Power Module and Fan failure.

Fault Indicator: Red LED

HV STATUS indicator: LOW/HIGH indicates that Output is OFF/ON.

Fine Adjustment Indicator: Amber LED

Operating Temperature 0 to +40°C

Preset Indicator: Amber LED

Operating Humidity 30 – 90% RH (no condensation)

Remote Program Indicator: Green LED

Storage Temperature -20 to +70°C

Remote Enable Indicator: Green LED
Polarity + Indicator: Green LED
Polarity - Indicator: Green LED

Storage Humidity 10 – 95% RH (no condensation)
Altitude For operation at Max. 5,000 ft.

HV ON Indicator: Red LED

Cooling Forced air cooling with internal fans.

HV OFF Indicator: Amber LED

Dimensions: (W X H X D)

AC Power On lamp: Amber

DRIVER: 19” X 14” X 24” (482.6 x 355.6 x 609.6mm)

Switches (momentary): Remote Program, Remote Enable, Fine Adjustment,Preset, HV ON, HV OFF.
Rotary Encoders: Voltage, Current, fine or coarse adjustments
AC Power Circuit Breaker

Rear Panel Elements

DRIVER CHASSIS, MASTER/STAND ALONE: AC Power Terminal Block: Screw
Terminal with safety cover; GND stud; AC ON indicator; 15 pin “D” connector for
HV signals; 9 pin “D” connector for HV fans; 25 pin “D” connector for customer
interface; 3 pin Interlock terminal block; RS232 connector; USB connector; Ethernet Port.(Optional); CL/CT switch; Four HVAC output connectors that connect
the driver to the HV Chassis, 15 pin “D” Slave Interface connector; 9 pin “D” Slave
Control connector.

HV CHASSIS: 19” X 5.25” X 24” (482.6 x 133.35 x 609.6mm)
Refer to the outline drawing.
Weight: 120 lbs (55 kg)

Accessories
Remote interface mating connector; detachable, 8 foot, shielded high voltage
coaxial cable. (See Model Chart for cable type); 10’ null-modem RS232 cable; 10’A/B –STD USB cable. Terminator Plug; Software CD. All chassis interconnect
cables are provided.

DRIVER CHASSIS, SLAVE: AC Power Terminal Block: Screw Terminal with safetycover; GND stud; AC ON indicator; 15 pin “D” connector for HV signals; 9 pin “D”connector for HV fans; 2 X 15 pin “D” Slave Interface connector; 2 X 9 pin “D”
Slave Control connector; Four HVAC output connectors that connect the driverto the HV Chassis.
HV CHASSIS: 4 x HVAC input connectors; ¼”-20 GND return stud; 15 pin “D” HVsignal connector; 9 pin “D” HV fan connector; HV output connector. (See ModelChart)

4GX Series

AC-HVDC CONVERTER

Mechanical Details

24.0 (609.6)

AIR
EXHAUST

0.125 (3.18)

1.50 (38.1)

13.685(347.60)

DRIVER ASSEMBLY

4.936(125.37)

HIGH VOLTAGE ASSEMBLY
1.50 (38.1)

19.00(482.60)
18.344(465.94)

0.328 (8.33)

3.500(88.90)

DRIVERASSEMBLY

13.969(354.81)4.000(101.60)

3.500(88.90)

AIR
INTAKEHIGH
VOLTAGEASSEMBLY

1.484(37.69)
0.406 x 0.266(10.3 x 6.7)
SLOT TYP.
2.250(57.15)

5.218(132.54)

1.484(37.69)

Notes:
1. Dimensions are in inches (mm).
U1
2. High voltage assembly shown for 15-100kV.

AIR
INTAKETB2J3J6*

J4J5POWER ON
INDICATOR
S1TB1

J2J1J8AIR

E1Specifications subject to change without notice.

WARNING! REQUIRED USERSUPPLIED CONNECTION TO
GOOD EARTH GROUND
1/4-20 UNC GROUND STUD

W85

1.484(37.69)
0.406 x 0.266(10.3 x 6.7)
SLOT TYP.
2.250 CONVERTER
AC-HVDC(57.15)HIGH
GXSeries
VOLTAGE5.218(132.54)

ASSEMBLY

1.484(37.69)

Mechanical Details

AIRINTAKEU1J6*J4TB2
J3J5POWER ON
INDICATORTB1J2J1E1WARNING! REQUIRED USERSUPPLIED CONNECTION TO
GOOD EARTH GROUND
1/4-20 UNC GROUND STUD

J8AIR
EXHAUSTDRIVERASSEMBLY
E2 1/4-20 UNC
GROUND STUD
JHV3

JHV2
JHV1JHV4AIR
EXHAUST

JHV4HIGH
VOLTAGEASSEMBLYJHV1JHV2

JHV3
JHV5
E1 1/4-20 UNC
GROUND STUDKey

Function

J1J2AIRINTAKEKey

Function

E1GroundJHV1High Voltage AC

E2GroundJHV2High Voltage AC

J1RS232 Interface

JHV3High Voltage AC

J2USB InterfaceJHV4High Voltage AC

J3Analog Remote Interface

JHV5High Voltage Output

J4High Voltage Interface

TB1AC Input

J5High Voltage Interface

TB2Signal Interface

J6Master/Slave Interface Out

U1

Ethernet (option)

J8

Slave Control Out

102002-146GX E 21 May 216