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DC Power Supplies

DC Power Supplies

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 1KW to 15MW with current ratings up to 120kA.

240KW Rectifier

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 here to view some representative DC Power Supply project profiles. Right click here to download our 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* *Preregulated*
*Single Phase Voltage Range* *Amperage Range*	6-1,000V 50-200A	6-1,000V 2-200A	12-400V 25-200A
*Three Phase Voltage Range* *Amperage Range*	6-1,000V 50-10,000A	6-1,000V 50-1,000A	12-400V 25-1,000A
*Voltage Regulation* (Line and Load)	1%	0.05%	0.01%
*Current Regulation* (Line and Load)	1%	0.1%	0.02%
*Ripple V*_RMS (maximum)	1%	0.5%	0.005%
*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: IEEE 488.2, RS232, RS485, GPIB,

Functions: Start/Stop, Reset, Fault, Inhibit, Current Adjust, Voltage Adjust, Fault Indication (UV, OV, OC, other)

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)