XP Power

LQ Series
10 kW RegulatedHigh Voltage DCPower Supplies
1 kV to 12 kV
Rack Mount
CE Compliant
Parallelable To
50 kW
200, 380, 415 &480 VAC input
Options
Fully RoHS
Compliant
The LQ family are sophisticated, 10 kW,
high voltage power supplies with low
ripple and noise. They are air insulated,
fast response units, with tightregulation.
Please refer to Technology > Applications
page on our web site for typicalapplications.
The LQ Series are fully compliant with thefollowing European Harmonized EMI
Directives:• EN61010/ IEC61010, Safety• EN61000-6-4, Conducted andRadiated Emissions• EN61000-6-2:2005, Conducted andRadiated Immunity• 2011/65/EU, Restriction of the useof Hazardous Substances (RoHS)

Models from 0 to 1 kV through 0 to 12 kV, 8.75” H x 19” W x 24.0” D, 60 lbs.

Features:
Arc Quench. The HV output is inhibited for a short period after each load arc
to help extinguish the arc.
Arc Count. Internal circuitry constantly
senses and integrates arcs that occur
over a given time. In the event a system
or load arcing problem develops andexceeds factory-set parameters, thepower supply will cycle off in an attempt
to clear the fault and then automaticallyrestart after a preset “off dwell time”.
Pulse-Width Modulation. Off-the-line
pulse-width modulation provides highefficiency and a reduced parts count for
improved reliability.
Low Ripple. Ripple is typically lessthan 0.1% RMS of rated voltage at fullload.
Air Insulated. The LQ Series features“air” as the primary dielectric medium.
No oil or encapsulation is used to
impede serviceability or increase
weight.
Input Voltage. 208 VAC standard.
380, 415 & 480 VAC optional.
Parallelable. One master supply andup to 4 slave supplies for a maximum of50 kW.

Constant Voltage/Constant Current
Operation. Automatic crossover fromconstant-voltage to constant-current
regulation provides protection against
overloads, arcs, and short circuits.
Constant Current/Current Trip.
A rear panel switch allows selection ofeither current mode.
Redundant Thermal Overload
Protection. Thermostats and fan RPM
sensing shut down the power supply
due to over temperature or reduced
fan speeds.
Tight Regulation. Voltage regulation
is better than 0.05% for allowable line
variations and 0.05% for allowableload variations. Current regulation isbetter than 0.5% from short circuit
to rated voltage.
Warranty. All power supplies are
warranted for three years. A formal
warranty statement is available.

CE (Meets all applicable directives), UKCA
(Meets all applicable legislation)www.xppower.com

102002-146LQ N 17 Feb 20

XP Power

Specifications(Specifications apply from 5% to 100%
rated voltage. Operation is guaranteed
down to zero voltage with a slightdegradation of performance.)
Input: 187 - 228 V RMS, three-phase,48-63 Hz, 16.0 kVA maximum at fullload (less than 45 A/phase). Inrush
current is less than 150 A. A fiveposition terminal strip is provided forAC line conection. Mains service
must be protected with fuses orcircuit breakers with a maximum
rating of 125 A for 208 VAC models& 100 A for 380 through 480 VAC
models.
Efficiency: Typically greater than 85%
at full load.
Output: Continuous, stable adjustment
from 0 to rated voltage/current by meansof panel-mounted 10-turn potentiometers (0.05% resolution), or external 0 to+10 V signals. Repeatability better than0.1% of setting.
Voltage programming accuracy: 1% ofsetting + 0.5% of rated output.
Resolution is a function of the programming method used.
Current programming accuracy: 1% ofsetting plus 1% of rated output.
Line Regulation: < +/- 0.05% of rated
output for a +/-10% input line variation.
Load Regulation: < +/- 0.05% of rated
output for a no load to full load change.
Ripple: < 0.1% +1V RMS of rated output
voltage.
Current Regulation: Better than 0.5%
from short circuit to rated voltage at any
load condition.
Voltage Monitor: 0 to +10 V equivalent
to 0 to rated voltage. Accuracy: 1% ofreading + 0.5% of rating. Output
impedance is 10 K Ohm.
Current Monitor: 0 to +10 V equivalent
to 0 to rated current. Accuracy: 1% ofsetting plus 1% of rated output. Output
impedance is 10 K ohm.
Stability: 0.01% per hour after 1/2 hourwarm-up, 0.05% per 8 hours.
Voltage Rise Time Constant: 50 ms
typical, using either HV enable or remote
programming control.
Temperature Coefficient: 0.01%/° C.
Ambient Temperature: -20 to +40° C,operating; -40 to +85° C, storage.
Polarity: Available with either positive ornegative polarity.

Protection: Automatic current regulation
protects against all overloads, includingarcs and short circuits. Thermal switches
and rpm sensing fans protect against
thermal overload. Circuit breaker, fuses,
surge-limiting resistors, and low energy
components provide ultimate protection.
Arc Quench. An arc quench featureprovides sensing of each load arc andquickly inhibits the HV output for
approximately 20 ms after each arc.
Arc Count: Internal circuitry senses thenumber of arcs caused by external load
discharges. If the rate of consecutive arcs
exceeds approximately one arc persecond for five arcs, the supply will turnoff for approximately five seconds toallow clearance of the fault. After thisperiod, the supply will return automatically to the programmed output voltage
value with the voltage rise time constantindicated. If the load fault still exists, theabove cycle will be repeated.
Current Limit: In current limit modethe power supply will regulate the load
current at the programmed current levelwith automatic crossover between
voltage and current regulating modes.
Current Trip: A switch located on therear of the control panel assembly allows
the selection of current limit or current
trip operation. When the switch is set tocurrent trip mode, the HV output will
disable and latch off when the load
current reaches the programmed currentlevel. Reset is accomplished by either
cycling the AC power, toggling the HV
enable signal, or by pushing the HV
off/reset and then the HV on switches.
Front Panel Elements: The front panel
contains all local control functions andindicators. These are: AC power on/off
circuit breaker and indicator light,
separate 10-turn controls with locking
vernier dials used to set voltage andcurrent levels, high voltage on switch,and high voltage off/reset switch. LED's
indicate: when high voltage is on, output
polarity, interlock, fault status, andwhether the supply is operating in a
voltage or current regulating mode.
Output levels are indicated by voltage
and current digital meters.
Rear Panel Elements: The rear panel
contains the AC mains input connections
with safety cover, AC power indicator, HVoutput, ¼-20 ground return stud, CL/CTswitch, 25 pin "D" interface connector,
and a 12 position terminal strip. Theterminal strip provides local/remotesignal selection, interlock, and remote
HV ON/OFF functions.

www.xppower.com

Slave Front Panel Elements (20 - 50kW Models): AC power on/off circuit
breaker and indicator light, Bias, Tracking(Overvoltage), and thermal overload/low
fan speed indicators and Slave voltage
and current test points.
Remote Control Interface: All LQ family
power supplies provide a standard user's
remote interface.
The signals provided are:Inputs: Safety interlock, output
voltage and current programsignals, high voltage enable andconnections for remote HV on andoff pushbuttons
Outputs: Output voltage and current
monitor signals, HV enable status,
I/V regulation mode status, fault
status, and a +10 V reference source.
Signal common and ground reference terminals are also provided.
Optional Interfaces:
RS-232/USB computer interface(external add on assembly).
External Interlock: Open = off, closed =on. Normally latching except for "NC"
option supplies where it is non-latching.
The interlock indicator LED is lit when
the interlock is open.
HV Enable:
Remote Mode: 0 - 1.5 V = OFF,
2.5 - 15 V = ON.
Local Mode: The HV output ispermanently enabled.
HV Status, Fault and I/V Regulation
Status: Each are a set of form "C" relaycontacts.
Accessories: Detachable, 8 foot, shieldedhigh voltage coaxial cable is provided.
A 25 pin D-subminiature connector forcustomer interface is provided.
Regulatory: The system will meet theEuropean conducted emission standards
as specified in 2004/108/EC and theEuropean Low Voltage Directive,
2006/95/EC.
Size: 8.75"H X 19"W X 24"D rack
mounted chassis. Forced air coolingis employed.

XP PowerOptions
Symbol Description
200
180 to 220 VRMS, 3-phase input, 48-63 Hz,
derate output current by 10%
380342 to 440 VRMS, 3-phase input, 48-63 Hz
415-50 370 to 460 VRMS, 3-phase input, 48-52 Hz
480-60 430 to 530 VRMS, 3-phase input, 57-63 Hz
5VC
0-5 V voltage and current program/monitor.
NCBlank front panel, AC power breaker/switch
and indicator only,

Symbol DescriptionSS
Slow start ramp. Specify standard times of 5, 10, 15, 20, or 30
seconds ± 20% .
ZR
Zero start interlock. Voltage control, local or remote, must be atzero before HV will enable.
K01
RS-232/USB control and monitor
K02
RS-232/USB/Ethernet control and monitor
Please consult factory for special requirements.

ModelsOutlineFor Models Greater Than 20 kW, Please Consult Factory.

www.xppower.com

XP Power

Slave and System Outline

www.xppower.com