OEM HVPS-300 User manual

rev 3.02 / 2020 09 18
HVPS-300
high voltage power supply
with bipolar output
User manual
Warning! This equipment produces high voltages that can be very dangerous.
Please read user manual carefully before starting operations.

Description / Appearance
HVPS-300 is a specialized HV power supply with bipolar output. This means the output
connector has three pins – Ground, HV positive and HV negative. Potentials of HV positive and
HV negative are always equidistant from the Ground potential. In other words, 4kV output
voltage is produced by generation of +2kV at HV positive pin and -2kV at HV negative pin.
Due to bipolar output and high stability of HV output (see Specifications section), the target
application of HVPS-300 is feeding high voltage high repetition rate Pockels cell drivers
commonly used in laser industry.
Module’s input is 24V DC. Module’s output is DC high voltage (modification up to 4kV are
available by default, higher voltages are discussable). Maximal output power exceeds 300W.
Power supply is forced-air cooled with an embedded fan.
By default, all interfaces are analogue. Digital interfaces are available on request.

Connectors, pins, interface signals
24VDC (AMASS XT30PW-M):
PIN (color)
DESIGNATION
DESCRIPTION
+ (red)
+24V
24V voltage from an external low voltage
power source to be supplied to these pins to
power up the HVPS-300
Current consumption is up to 20A at full
output power
- (black)
GND
24VDC return
Warning! Because of safety reasons we highly recommend to use low voltage
power supply with DC output galvanically insulated from AC input (insulation strength
4000VAC, 2500VAC or 1500VAC is selected in dependence on your application).

INTERFACE (MOLEX 90130-3110):
PIN (color)
DESIGNATION
DESCRIPTION
1 (black)
Enable Jumper
(GND)
Pins 1 and 2 should be interconnected to
use power supply in stand-alone regime
In this case, high voltage will appear at
the power supply output once HVPS-300
is powered
2, 4 (yellow)
Enable
Pin 2 or 4 should be pulled to the ground to
enable the output. Output is disabled while
TTL high level is applied to pin 2 (4) or pin
2 (4) is left unconnected
To use power supply in stand-alone regime,
pin 2 (4) might be short-circuited with one
of Interface return pins (e.g. pin 1)
3 (green)
HV Monitor
Output voltage monitor
Calibration is linear, 10V on pin 3
corresponds to VMAX at the output
5 (black)
GND
(Interface return)
Return of all Interface signals (Enable, HV
Monitor, Fault) except HV Program
6 (-)
N/C
-
7 (orange)
HV Program
Return
Return of HV Program signal
In order to improve high voltage stability
isn’t connected to the common ground of
Interface
8 (violet)
Fault
5V if fault occurred, 0V elsewise.
Fault state is set in the next cases:
• Overheating of HVPS-300
9 (blue)
HV Program
DC voltage applied between pins 9 and 7
sets up the high voltage level
Calibration is linear, 10V between pins 9
and 7 corresponds to VMAX at the output
10 (white)
HV Program Jumper
Pins 9 and 10 should be interconnected to
use power supply in stand-alone regime
In this case output voltage is defined with
HV Program trimming potentiometer
Clockwise rotation decreases HV value
Counterclockwise rotation – increases HV
value

“ENABLE” JUMPER, “HV PROGRAM” JUMPER
AND “HV PROGRAM” TRIMPOT:
Warning! In stand-alone regime high voltage appears at power supply’s
output once the device is powered. Thus, we do not recommend using power supply in stand-
alone regime, do this on your risk only.
HVPS-300 might be used in stand-alone regime. In this case, Enable jumper should be
used instead of Enable signal, HV Program jumper along with HV Program trimming
potentiometer should be used instead of HV Program signal.
Enable jumper is set between pins 1 and 2.
HV program jumper is set between pins 9 and 10.
HV OUTPUT (DSUB 3W3 MALE):
All pins are high voltage contacts by Harting (09692812550).
PIN (color)
DESIGNATION
DESCRIPTION
A1 (blue)
HV Negative
High voltage of negative polarity (-V/2)
appears on this pin once power supply’s
output is enabled
A2 (black)
GND
HV output ground potential
A3 (red)
HV Positive
High voltage of positive polarity (+V/2)
appears on this pin once power supply’s
output is enabled

LEDS:
POWER (green):
• LED lits steadily while device is powered.
OVERTEMP (red):
• LED is on once Overtemperature occurs.
HV OUTPUT (red):
• LEDs lit steadily while high voltage presents at the power supply output
(independently on whether HVPS-300 is powered or not).
MOUNTING AND GROUNDING:
Power supply to be mounted with 4pcs M4 screws (M4x10 or shorter).
Grounding policy
By default all grounds of HVPS-300 (HV Output Ground, 24VDC RETURN
and Interface Returns) are interconnected inside the power supply.
However neither of them is connected to the chassis.
Other grounding policies are possible on request.
Warning! Power supply enclosure to be
protectively grounded via provided M4 grounding stud.
COOLING:
Module is forced-air cooled with embedded fan. No additional cooling is required.

Safety
Warning! This equipment produces high voltages that can be very dangerous.
Don’t be careless around the equipment.
Assemble the entire setup before powering up the device.
• Power supply enclosure to be protectively grounded via provided grounding stud.
• Use low voltage power supply with DC output galvanically insulated from AC input
(insulation strength 4000VAC, 2500VAC or 1500VAC is selected in dependence on your
application)
• Do not connect / disconnect output cables while driver is turned on
• Do not operate with disconnected load
• Avoid casual contacts of personnel with output cables and with the load
• Do not turn the power supply on if it was already damaged with water, chemicals,
mechanical or electrical shock
• Do not self-repair the power supply, there are no user-serviceable parts inside
Operations
1 Ensure 24V DC power supply is off
2 Connect HVPS-300 to the load and to 24V DC power supply.
Do not apply 24V DC power until the setup is completely assembled
3 Disable HVPS-300 (pin 2 of Interface)
4 Set HV Program to 0V (pins 7 and 9 of Interface)
5 Apply 24V DC power to HVPS-300
6 Set HV Program to the desired value (pins 7 and 9 of Interface)
7 Enable HVPS-300 (pin 2 of Interface)

Technical notes
• Module’s output is bipolar. This means that e.g. 2kV output voltage is
physically formed by delivering +1kV to one output wire (HV Positive) and -1kV
to the other (HV negative, see also figure below)
By default, all descriptions of HV outputs are given in terms of voltage
differences. Please keep this in mind!
• Output power depends on the operating voltage. Rated output power is
achieved in ~75-100% of VMAX region only. At lower output voltages output
power decreases linearly with the voltage.
Typical power curve of HVPS-300-2kV

Specifications
ELECTRICAL SPECIFICATION
Input
+24V DC; up to 20A at full output power
HV Output
Output type
Bipolar (see also Technical notes section)
I.e. +V/2 applied to one output wire; -V/2 to another
Output voltage
A few modifications with output voltage up to 4kV
DC 1 are available (see also How to order? section)
Output power
>300W (in 80-100% of VMAX region)
Output capacitance
Depends on modification (see also How to order?
section)
Voltage accuracy
(incl. temperature drifts)
<0.5% (typically)
Ripple
<0.2% pk-pk
Efficiency
>85%
Protections
From overheating
Environment
Operation temperature
+10...+40 °C
Storage temperature
-20...+60 °C
Humidity
90%, non-condensing
1 In terms of bipolar output (see also Technical notes section)
MECHANICAL SPECIFICATION
Size (LxWxH)
169x107x59mm (without inputs and
outputs)
Weight
<1,0kg
How to order?
Since power curve depends on output voltage (see also Technical notes section), there are
a few modifications different with output voltage.
Modification
Description
HVPS-300-2kV
Maximal output voltage – 2kV
Maximal output power – over 300W @ 2kV
and decreases steadily with output voltage
Output capacitance – 13.5uF
HVPS-BT-300-2kV
Bench-top version (see photos below)
HVPS-300-4kV
Maximal output voltage – 4kV
Maximal output power – over 300W @ 4kV
and decreases steadily with output voltage
Output capacitance – 3.3uF
HVPS-BT-300-4kV
Bench-top version (see photos below)

Dimensions
№ докум.
ЛистИзм.
Разраб.
Пров.
Т. контр.
Н. контр.
Масштаб
454.00.00.000-06ГЧ
Листов 1
Шифр:
Инв. № подл. Подп. и дата Взам. инв. № Инв. № дубл.
Масса
454.00.00.000-06ГЧ
Справ. №
454.00.00.000-06
Утв.
Лист
1:10.42
Подп. и дата
Формат A2
Перв. примен.
Лит.
HVPS300
Габаритный чертеж
Копировал
Дата
Подп.
ООО "OEM Tech"
A
AAA
172,4
169
155
182,9
63,7
59
106,5
109,8
A
AAA
70
135 9 M4-7H
4 отв.
18,25

Bench-top version
Bench-top version with 100-240VAC input is also available.