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• Repeatability < 0.1% at rep. rates to 1kHz
• Water cooled
• 50% more power than 802 in same space
• Selectable 208 or 400VAC input
• Sealed HV assembly
• Remote compatibility with 802 and 402
• Outputs to 30 kV
• UL approved (pending)

• Excimer Lasers
• Pulsed YAG Lasers
• Lithotriptors
• Precipitators
• General Medium Power PFN's
• Grid Bias Supplies
• N2 Lasers
• Dye Lasers
• TEA Lasers

802 - 8kJ/sec or 8kW DC
203 - 20kJ/sec or 30kW DC

APP Note 500: Calculating Capacitor Charge Time
APP Note 502: Calculating AC Line Currents
APP Note 505: Charging units as Continuous Output DC  Supplies
APP Note 507: Charging Large Load Capacitors
APP Note 509: What is Regulation and Repeatability?
APP Note 513: Power Factor Correction
APP Note 517: Protection Against Voltage Reversal
Appn. Questionnaire

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ALE Model LC1202
Water Cooled High Voltage Capacitor Charging and DC Power Suplies
Output Voltages: 0-1kV to 0-30kV at 12kJ/sec average power or 15kW DC
Click here to request more ALE LC1202 Information

  • Overview
  • Technical Details
  • Technical Support

Product Overview and Models

The LC1202 Series is a Compact water-cooled rack mount constant current capacitor charging or DC power supply with output voltages available from 0-1kV to 0-30kV, 208VAC*, 400VAC, or 480VAC three phase input, with fully instrumented front panel (L model), or optional Slave/OEM versions.


  Capacitor Charging Ratings   Continuous DC Ratings    
Model Number Output

Cap Charging

Cap Charging



DC Power

DC Current (Amps)



LC1202L-1kV-POS 0-1,000   12,000 13,500 27   15,000 15  
LC1202L-2kV-POS 0-2,000   12,000 13,500 13.5   15,000 7.5  
LC1202L-4kV-POS 0-4,000   12,000 13,500 6.75   15,000 3.75  
LC1202L-5kV-POS 0-5,000   12,000 13,500 5.4   15,000 3  
LC1202L-10kV-POS 0-10,000   12,000 13,500 2.7   15,000 1.5  
LC1202L-15kV-POS 0-15,000   12,000 13,500 1.8   15,000 1  
LC1202L-20kV-POS 0-20,000   12,000 13,500 1.35   15,000 0.75  
LC1202L-30kV-POS 0-30,000   12,000 13,500 0.9   15,000 0.5  
Other Voltage Available on Request, please contact factory for details.
* Note: 15kW average DC power rating with 400 or 480VAC input, derate to 12kW with 208VAC input.


Ordering Information





  Input Voltage  

Factory Options


L - 15kV - POS - 3P208 for 208VAC - 5V
  S           3P400 for 400VAC   LP
  OEM           3P480 for 480VAC   CT

The LC Series are a new design of compact water cooled power conditioning solutions for high performance HV Capacitor Charging applications requiring extremely low pulse to pulse repeatability. The LC1202 capacitor charging power supply is capable of delivering peak output charge rates of 13.5kJ/sec and average rates of 12kJ/sec. If used for DC applications the unit can continuously deliver 15kW power (12kW with 208VAC input). The unique phase shifting inverter design enables the supply to charge capacitive loads with shot to shot voltage repeatability of 0.1% or better at repetition rates up to 1kHz.

The LC1202 shares elements of its topology with the XR series, but utilizes a brand new design of water cooled phase shifting resonant inverter. The use of a unique sealed water cooled HV tank assembly results in an 12kJ/second power supply in the same footprint as a standard 8kJ unit. The sealed HV tank also allows the unit to operate when the supply is not completely horizontal, unlike conventional oil insulated high voltage power supplies. Since the LC series does not require external air for cooling it is particularly suitable for installation in tight spaces, or in adverse environments. TDK-Lambda Americas is the only company currently offering this advanced performance in a compact 12kJ/sec water cooled package.

For more information about the LC1202 Power Supply Series, contact the TDK-Lambda Americas Programmable and High Voltage team directly at +1-732-795-4100 or online at -

A wide range of other TDK-Lambda Programmable and High Voltage power supplies can be viewed from the website:


AC Input

Input Voltage (VAC) Current 
3P208, 180-264*, 47-63Hz, 3ph 50A
3P400, 340-460*, 47-63Hz, 3ph 26A
3P480, 432-528, 47-63Hz, 3ph 20A

*Field selectable 208/400VAC input with appropriate conversion kit.
(Please specify at the time of order).

Average Charging Rate
12,0000 J/s at rated Output Voltage.

Peak Charging Rate
13,500 J/s at rated Output Voltage.

Average Continuous DC Power
15,000 Watts
(derated to 12,000W with 208VAC input)

Standard Voltage Ranges
1, 2, 4, 5, 10, 15, 20, 30kV.
All models continuously variable from 10 to 100% of rated voltage output.
Linear to within 1% of full scale.
Accuracy 1% of rated.

Available as fixed Positive or Negative, Please Specify.

High Voltage Assembly
Voltage Medium Output Cable

Input Connector
VDE, UL, CSA, approved.

AC Line Contactor
VDE, UL, CSA, approved line contactor (Standard on LC1202L. LC1202S, LC1202OEM).


Power Factor
Passive PFC 0.9 min

Better than 90%

Stored Energy
Less than 0.3 Joules all models.

Flowed water at 2US GPM (7.6L/min) max. inlet temperature 35°C. All water paths are at ground potential and are copper, brass or hydraulic hose. Connections via 12mm pipe to standard Swagelok type fittings on back of unit.

0.2% per hour after 1 hour warm-up.

Pulse to Pulse Repeatability
+/- 0.1% to 300Hz standard
+/- 0.1% to 1kHz option

Temperature Coefficient
100 PPM per °C

Ambient Temperature
Storage: -20 to +70 °C
Operating: 5 to +45 °C

10-90% Non-condensing

The power supply is protected against open circuits, short circuits, overloads and arcs.

Width: 19"(482mm)
Height: 8.75"(222mm)
Weight: 100lbs, 46kg
Rack mountable with General Devices
CTS-122 or CTS-222 or equivalent slides with 3.875" hole centers
Click here for mechanical details
Shipping Details:
Wooden skid (freight shipment only):
Width: 29"(0.74m)
Length: 26"(0.66m)
Height: 18"(0.46m)
Weight: 140lbs, 64kg

Accessories (included with unit)
All Models - 10ft long, DS2214 coaxial cable with proprietary connector design
Operating manual

Remote Control
Via 25pin d-type connector on rear panel. Click here for details


Suffix-5V 0 to +5V programming = 0 to full scale output voltage (standard 0-10V)
Suffix-LP Latching Overload Protection.
Supply will latch off, requiring a reset if an overload condition occurs.
Suffix-CT Optional internal contactor for OEM only (standard on L/S models)
Suffix-DC Continuous DC output
Suffix-RS Remote load voltage sense input for external 1000:1 or 10,000:1 HV divider.

What's in the Box
Power Supply
HV Output Cable Assembly
User Manual CD
Test Data Sheet

All specifications subject to change without notice.
Factory Technical Support Contacts

High Voltage Products - 1000V and higher
All ALE models, 500A, 102A, 152A, 202A, 402, 802, LC1202, 203, 303, HV Systems
PHV and FLX-HV High Voltage DC Models
Support Hours 8am-5pm Eastern
Standard Time
Andy Tydeman - Email
Tel: (732) 795 4149
Fax: (732) 455 6026
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