PXe-AC-DC Series DC Output Static Converters

PXe-AC-DC Series Configurations

PXe-AC-DC Series converters are configured around the available AC input, required DC voltage and current, load type, duty cycle and control requirements.

Single-phase input is available on selected lower-power models. Larger systems generally use a three-phase input to reduce the current carried by each incoming phase.

Available Configurations

Popular Configurations

The configurations below show representative combinations from the wider PXe-AC-DC Series. Alternative voltage and current ratings can be supplied following technical review.

The listed model format uses the DC output voltage followed by the maximum output current. Availability, dimensions and input requirements are confirmed for each configuration.

High-Current Installation Considerations

For low-voltage high-current systems, the complete output circuit must be considered. Cable resistance, busbar resistance, contact resistance and connection quality can materially reduce the voltage available at the load.

PX will normally review:

• Required voltage at the equipment
• Continuous and peak current
• Output cable length
• Cable or busbar cross-section
• Permitted voltage drop
• Terminal and connector arrangement
• Duty cycle
• Cooling requirement
• Load isolation
• Protective bonding and earthing

Remote sensing may be considered where accurate voltage is required at the load rather than only at the converter terminals, subject to the selected design.

Order Codes:

A product order code can be derived from the main ordering information using the structure below:

Generic order code is based on this format: PXe-1-28-0003-AC-DC,  indicating 1ph-input 28Vdc-output and 3kVA

For example a 1 phase in 50Hz, 28Vdc phase out, 3kVA,  = PXe-1-28-0003

PXe-1-28-0000-AC-DC-[INPUT]-[OUTPUT1]-[OUTPUT2]-[RATING]-[ENCLOSURE]-[CONTROL]

PXe-1-28-0003-AC-DC-[1P230V50]-[28VDC]-[3KVA]-[IP22]-[RS232]

This would represent:

(PXE-1-28-0003-AC-DC) – PX Electronics AC-DC Converter
(1P230V50) – 1 phase, 230VL-L, 50Hz input
(28VDC) – 28Vdc output
(3KVA) – 3kVA rating
(IP22) – IP22 enclosure
(RS232) – Control

For a manually controlled standard enclosure version, the part number may look like this:

PXe-1-28-0003-AC-DC-1P230V50-28Vdc-3kVA-IP22-RS232

Available Options

Alternative DC Output Ratings
Voltage and current can be configured around the required operating point, subject to the available input supply and total output power.

Programmable Voltage and Current Control
Selected systems can provide adjustable output settings and programmable voltage or current limits.

RS232, RS485 and Modbus
Optional communications allow connection to computers, PLCs and automated test equipment.

Stored Operating Settings
Selected models can store voltage and current settings for repeatable test operation. The number of available memory positions is model-dependent.

High-Current Busbar Output
Bolted busbars and heavy-duty terminations can be supplied for high-current installations.

Remote Voltage Sensing
Remote sensing can be considered where output-circuit voltage drop needs to be compensated at the load.

Rack-Mount Construction
Lower-power units can be supplied in rack-mounted formats where the voltage, current and cooling requirements allow.

Floor-Standing Cabinet
Higher-power and high-current systems are supplied in ventilated floor-standing cabinets.

Custom Cables and Connections
Output cables, busbars, terminal covers, isolators and customer-specific connection assemblies can be discussed.

Factory Acceptance Testing
FAT can include output voltage and current checks, regulation, protection operation, communication tests and customer-agreed load points.

Customer or Third-Party Witness Testing
Formal witness testing can be arranged where required for project acceptance.

PXe-AC-DC Series Technical Specification

The values below represent the standard series specification. Model-specific performance is confirmed in the final technical proposal.