This is a Lambda EMI LC1202L-2.5KV-POS-RS-208VAC-1465A Power Supply..

Per MFG
http://www.us.tdk-lambda.com/hp/product_html/lcpower.htm

“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.”
Specifications
Average Charging Rate
12,000 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)

Lambda Physik Part #: 28084061
Water Cooled.

***MPN LC1202L-2.5KV-POS-RS-208VAC-14
***OEM Lambda Physik
***SKU*** 10389