XP Power

LH Series
5 kW RegulatedHigh Voltage DCPower Supplies
1 kV to 150 kV
Rack Mount
CE Compliant
Semi S2-93Compliant
Fully RoHS
Compliant
The LH family of power supplies aresophisticated, 5 kW, high voltage power
supplies with low ripple and noise. They
are air insulated, fast response units, withtight regulation.
Please refer to Technology > Applications
page on our web site for typical applications.
The LH Series, when configured with the400 VAC Input Option, is fully compliant
with the following 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 150 kV, 10.50” H x 19” W x 24.0” D, 60 lbs.

Features:
Arc Quench. The HV output is inhibited fora short period after each load arc to help
extinguish the arc.
Arc Count. Internal circuitry constantly
senses and integrates arcs that occur over agiven time. In the event a system or load
arcing problem develops and exceeds factory-set parameters, the power supply will
cycle off in an attempt to clear the fault andthen automatically restart after a preset “offdwell time”.
Pulse-Width Modulation. Off-the-line
pulse-width modulation provides high efficiency and a reduced parts count for
improved reliability.
Low Ripple. Ripple is less than 0.05% RMS
of rated voltage at full load.
Air Insulated. The LH Series features “air”
as the primary dielectric medium. No oil or
encapsulation is used to impede serviceability or increase weight.

Tight Regulation. Voltage regulation isbetter than 0.005% for allowable line varia
tions and 0.01% for allowable load variations. Current regulation is typically better
than 0.2% from short circuit to rated voltage.

Differentially Coupled Analog Control
Signals. All voltage and current programming and monitoring signals are coupled tothe user interface by true differential amplifiers. This provides for the ability to return
the program and monitor commons toground or system common at the source.
This arrangement isolates the return wires
and eliminates errors due to unwanted
return currents flowing in these connections.
Warranty. All power supplies are warranted
for three years. A formal warranty statement
is available

Constant Voltage/Constant Current
Operation. Automatic crossover from constant-voltage to constant-current regulation
provides protection against overloads, arcs,
and short circuits.
Constant Current/Current Trip. A rear
panel switch allows selection of either current mode.
Redundant Thermal Overload
Protection. Thermostats and fan RPM
sensing shut down the power supply due toover temperature or reduced fan speeds.

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

102002-146LH J 01-Nov-19

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, 6500 VA maximum at fullload. Less than 20 A per phase at 208VAC. A five position rear terminal
block with protective cover is provided.
Mains service must be protectedwith fuses or circuit breakers with amaximum rating of 100 A for
200/208 VAC models & 60 A for 400
VAC models.
Efficiency: Typically greater than 85%
at full load.
Output: Continuous, stable, adjustment
from 0 to rated voltage or current by
panel mounted 10-turn potentiometerswith 0.05% resolution, or by external
0 to 10 V signals is provided. Voltage
accuracy is 0.5% of setting + 0.2% ofrated.
Static Voltage Regulation: Better
than ±0.005% for specified line
variations and 0.01% for no load
to full load variations. For 80-100KV
models, V-Load regulation is 0.025%.
Dynamic Voltage Regulation: For loadtransients from 10% to 99% and 99%
to 10%, typical deviation is less than
2% of rated output voltage withrecovery to within 1% in 500 μs andrecovery to within 0.1% in 1 ms.
Ripple: Better than 0.05% RMS of
rated voltage at full load.
Current Regulation: When in current
regulation mode, 8-150 kV, better than
0.2%, 1-6 kV, better than 0.5% fromshort circuit to rated voltage at any
load condition.
When in current trip mode the HV
output will disable and latch off
when the load current reaches theprogrammed current level. Reset isaccomplished by either cycling the AC
power or HV ON/OFF buttons, or bytoggling the HV enable signal. A
switch located on the rear panel allows
the selection of current limit modes:

constant current, or current trip.
Voltage Monitor: 0 to +10 V equivalent
to 0 to rated voltage. Accuracy: 0.5% ofreading + 0.2% of rated. Impedance is
10K Ω.
Current Monitor: 0 to +10 V equivalent
to 0 to rated current. Accuracy:
1 kV to 6 kV: 1.5% of reading plus
0.5% of rated output.
8 kV to 150 kV: 1% of reading plus
0.2% of rated output.
Impedance is 10K Ω.

Stability: 0.01% per hour after 1/2 hourwarm-up, 0.05% per 8 hours.
Voltage Rise/Decay Time Constant:(Typical using either HV enable orremote programming control and a
resistive load.)
1-6 kV: τ = 50 ms with 4% min. load.
8-20 kV: τ = 50 ms with 9% min. load.
25-100 kV: τ = 200 ms with 7% min load.
125-150 kV: τ = 400 ms with 8% minload.

voltage rise time constant indicated. If
the load fault still exists, the above
cycle will be repeatedExternal Interlock: Open = off,
closed = on. Normally latching except
for blank front panel version where it
is non-latching.
Front Panel Elements. The front
panel contains all local control
functions. These control functions are:AC power on/off circuit breaker andindicator light, separate 10-turncontrols with locking vernier dials used
to set voltage and current levels, HIGH
VOLTAGE ON switch, and HIGH
VOLTAGE OFF/RESET switch. LED's
indicate: when high voltage is on,
output polarity, interlock, fault status,
and whether the supply is operating ina voltage or current regulating mode.
Output levels are indicated by voltage
and current digital meters.

Ambient Temperature: -20 to +40ºC,operating; -40 to +85ºC, storage.

Rear Panel Elements. AC power
entry terminal strip, power on
indicator, ground stud, HV output
connector, current limit/current trip
switch, remote interface terminal
strip and connector.

Protection: Automatic current regulation
protects against all overloads, includingarcs and short circuits. Thermal
switches and RPM sensing fansprotect against thermal overload.
Fuses, surge-limiting resistors, andlow energy components provide
ultimate protection.

The remote interface terminal strip
provides connections for the interlock
circuit. In addition, jumpers on theterminal strip select local or remote
operation of current program, voltage
program and HV enable. Signal
common and ground reference
terminals are also provided.

Arc Quench: Optional on models 1 kVthrough 6 kV; standard on models 8 kV
through 150 kV. An arc quench featureprovides sensing of each load arc andquickly inhibits the HV output for
approximately 20 ms after each arc.

The remote interface connector provides differential voltage and current
program signals, high voltage enable,
differential 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.

Temperature Coefficient: 0.01%/ºC.

Arc Count: Optional on models 1 kVthrough 6 kV; standard on models 8 kV
through 150 kV. Internal circuitry senses the number of arcs caused by external load discharges. If the rate of consecutive arcs exceeds approximately
one arc per second for five arcs, thesupply will turn off for approximately
five seconds to allow clearance of thefault. After this period, the supply will
return automatically to the programmed output voltage value with thewww.xppower.com

Remote HV Enable/Disable:
0 - 1.5 V = OFF,
2.5 - 15 V = ON.
Accessories: Remote interface mating
connector and detachable, 8 foot,shielded high voltage coaxial cable provided. See Model Chart for cable type.
Weight: 60 pounds.

XP PowerOptions
Symbol Description
200180 to 220 VRMS, three phase input,
48-63 Hz, derate output current by 10%.
400
340 to 460 VRMS, three phase, 48-63Hz.
(Required for CE compliance.)
NC
Blank front panel, power switch only.
ZR
Zero start interlock. Voltage control, local
or remote, must be at zero before HV will
enable.
SSSlow start ramp. Specify standard timesof 5, 10, 15, 20, or 30 seconds ± 20% .

Symbol Description
5VC
0-5 V voltage and current program/monitor.
ARC
For 1 to 6 kV models. Arc quench and arc
count are provided as described inspecifications for 8 to 150 kV models.
FGCommon to ground isolation for 1 to
6 kV models. (Standard on 8 to 150 kVmodels.)
K01
RS-232/USB control and monitor
K02
RS-232/USB/Ethernet control and monitor
Please consult factory for special requirements.

Modelswww.xppower.com