DC Power Supplies

DC Power Supplies from 5KW to 15MW

PCTI’s regulated DC power supplies are a solid state unit utilizing primary SCR (thyristor) technology in a full-bridge rectifier, constant voltage control, constant current control, automatic crossover series regulation, DC filter, instrumentation, and many operational and protective monitoring features. PCTI’s High-Precision class of DC power supplies use an SCR preregulator to achieve high efficiency, low ripple, precise regulation and low output noise. Power supply designs are available in ratings from 5KW to 15MW with current ratings up to 120kA.

PCTI power supplies and systems can be used where ever DC power is required and are at work today in hundreds of industrial, commercial, research, transit and military applications including electrochemical, steel, welding, plating, circuit breaker testing, busbar testing, desalinization, grid tie in, and aircraft engine starting. Each unit is based on standard designs and precision engineered to meet your specific application. Our power supplies are available as regulated or non-regulated for a variety of industrial or laboratory environments. If you need help in specifying your power supply, click here to find a DC Power Supply Application Data Sheet.

PCTI high current DC power supplies are built to customer order from a range of standard power and control modules, and offer high performance, high reliability and sophisticated control systems. A variety of computer interfaces are available to meet all of your power supply programming and control requirements. Click on the buttons at the top right for representative high power and typical project profiles. Right click to download PCTI’s DC Power Supply brochure. 

DC Power Supply Specifications

The following specifications outline PCTI’s DC power supply product line. Please contact PCTI for options not listed here or for assistance regarding your particular application.

Output Parameters	Standard	Precision	High-Precision Pregulated
Single Phase Voltage Range	6-1,000V	6-1,000V	12-4006-1,000V
Amperage Range	50-200A	2-200A	25-200A
Three Phase Voltage Range	6-1,000V	6-1,000V	12-400V
Amperage Range	50-10,000A	50-1,000A	25-1,000A
Voltage Regulation (Line and Load)	1%	.05%	0.01%
Current Regulation (Line and Load)	1%	0.1%	0.02%
Ripple VRMS (maximum)	1%	0.5%	.005%
Response Time (typical)	200mseconds	50mseconds	50μseconds

* for load steps of 40 to 90% of full load

 

General Specifications

Input Voltages ( 50/60Hz ) Single Phase: 110, 115, 120, 130, 200, 208, 230 Three Phase: 208, 220, 230, 380, 415, 440, 460, 480, 575 Standard Features Constant Current Control Constant Voltage Control Automatic Crossover Regulated Voltage Regulated Current Soft Start Automatic Phase Selection Standard Front Panel Devices Output Current Adjustment Output Voltage Adjustment Analog or Digital Voltmeter Analog or Digital Ammeter Power ON Indicator Start/Stop Pushbutton Fault/Reset Pushbutton Computer Interface/Remote Capability Analog Signals: 4-20mA, 0-5V, 0-10V or Computer Interface: ethernet, profibus, Modbus, CANbus, IEEE 488.2 / GPIB, RS232, RS485  Functions: Start/Stop, Reset, Fault, Current Adjust, Voltage Adjust, Fault Indication. Protection Overcurrent/Overload* Overvoltage* Undervoltage* Overtemperature (cabinet, semiconductor, transformer) Input Short Circuit (circuit breaker or fusing) Output Short Circuit * Input & Output Surge Suppression (MOVs) Phase Loss* I2t Fusing * via electronic circuitry

Cooling Systems Forced Air Direct Water Closed Loop Water to Water Heat Exchanger Heatpipe Natural Convection Water cooled Liquid Cooled Water System Protection: low flow, temperature, resistivity, leak detection, low level Environmental NEMA Enclosure Types: 1, 3R, 12, 4, 4X Operating Temperature: -5°C to 40°C Storage Temperature: -10°C to 65°C Humidity: up to 90% non condensing Standard Conformance IEC, NEMA, NEC, IEEE MIL-SPEC   Optional Features Electronic Phase Imbalance Instrumentation/Metering Paralleling 12, 18 or 24 Pulse Design Remote Control Station Input Cables Output Cables Mobile (casters, wheels, trailer mount)