PSL Assemblies Ltd
Size
SME
Direct employees
24
Turnover (reported)
£3,100,000
Regional Markets
Asia, Africa, Australia, Europe, North America, South America
Nuclear Contracting Tiers
Tier 3: Original Equipment Manufacturing Organisations
Tier 4: Sub-component Suppliers/Distributors
Tier 5: Processors & Fabricators

Accreditations

  • ISO 14001
  • ISO 9001

PSL Assemblies Ltd

Enclosures

Semiconductor Stack Assembly, Thermal Solutions for Power Electronics, custom Heat Sinks & Liquid Cooling Plates, Power Conversion Sub-Assembly.

Overview

PSL Assemblies Limited is based in Dunstable, United Kingdom, and has 45 years' of experience in the manufacture of Semiconductor Stack Assemblies and Thermal Solutions for Power Electronic applications.
In house manufacturing includes CNC/VMC machining of custom heat sinks - including standard extrusion heat sinks, bonded-fin heat sinks, and liquid cooled plates.
All types of Semiconductor Stack & Power Electronic Assembly are manufactured in-house, including: Diode, IGBT and Thyristor Stacks, IGBT Chopper, Rectifier, Inverter sub-assembly, Static-Transfer Switch, box-builds and enclosures. PSL also manufacture specialist Isolation cells and bespoke clamping solutions, as well as supplying specialist gate drives, laminated busbars, power electronic capacitors and aluminium electrolytic capacitors.
In-house design & technical consultancy, 3D CAD, thermal analysis and prototype facilities - all enable PSL to provide a full Thermal Solution and Power Stack Assembly service to the Nuclear, Defence & Power Generation industries.
We can design a bespoke thermal solution for your power electronic applications, or we can work exactly to your BOM, drawings and technical specifications.

Products and Services

Product Sector
Electrical & Electronic Components & PCB's Oil & Gas including LNG
Electrical & Electronic Components & PCB's Subseas and Offshore
Electrical Enclosures & Panels Nuclear Civil
Electrical & Electronic Components & PCB's Nuclear Civil
Transformers & Inverters Nuclear Defence - Naval Marine
Instrumentation & Control Nuclear Defence - Naval Marine
Electrical & Electronic Components & PCB's Renewables - (Wind, Tidal, Solar Biomas etc.)
Transformers & Inverters Rail & Transport
Electrical systems - Low-Medium Voltage Switchgear Electrical components & equipment
Power Supplies - Emergency Systems Power Generation, Distribution & Transmission
Electrical Enclosures & Panels Power Generation, Distribution & Transmission
Electrical & Electronic Components & PCB's Electrical components & equipment

Semiconductor Stack Assembly (Thyristor, Diode, IGBT), Power Electronic Assembly, Standard Extrusion Heat Sinks, Bonded-Fin Heat Sinks, Liquid Cooled Plates, Static Transfer Switches, Thermal Solutions, Amantys gate drives, Idealec Laminated Bus-Bars, ICAR & Itelcond capacitors.

Site Facilities

Shop Floor

2250m2 In-house factory facilities include: CNC/VMC machining, EPA protected electronic assembly, manual electro-mechanical assembly, bonded-fin heat sink facility, secure storage, mezzanine storage, CMM measurement, testing, inspection, thermal analysis.

Specialist Machinery

Capability Swing Length Width Weight
Multi-spindle drillingDrilling & tapping threaded holes for semiconductor assembly Min: - - - N/A
Max: - - - -
Vertical Milling (CNC )Machining of custom heat sinks and cooling plates. Min: - - - N/A
Max: - 1200mm 700mm -
Vertical Mill / TurnPrototyping and short-batch machining Min: - - - N/A
Max: - - - -

Inspection / Testing

  • CMM machines
  • Electrical
  • Electro-Magnetic Compatability & Interference
  • Pressure / Hydro Testing

Design

  • CAD Design - 3D
  • CAM Design - 3D

Recent Work

IGBT Assembly

PSL manufacture every type of IGBT stack assembly - from H-Bridge to Full Inverter configurations. This picture shows a custom-manufactured bonded fin heat sink - manufactured in-house at PSL., together with IGBT modules supplied by Infineon.

IGBT Assembly

IGBT with Amantys Gate Drive Technology

PSL is a "value-added supplier" of Amantys gate drive technology. We can incorporate Amantys gate drives into our IGBT assemblies - providing fully optimized power stacks with state-of-the-art gate drive technology.

IGBT with Amantys Gate Drive Technology

Standard Aluminium Extrusion Heat Sinks

PSL manufactures custom machined heat sinks using Standard Aluminium Extrusion profiles. All heat sinks can be machined to bespoke requirements - incorporating additional cooling methods as required. Prototypes, thermal analysis and volume batch manufacturing available.

Standard Aluminium Extrusion Heat Sinks

Bonded Fin Heat Sinks

PSL is the leading European manufacturer of Bonded-Fin Heat Sinks. Available in all designs and sizes, we manufacture bonded fin heat sinks to the highest standards of workmanship and quality. Our manufacturing & bonding process has been developed over 30 years, and we have unrivalled expertise in the manufacture of Bonded-Fin heat sinks.

Bonded Fin Heat Sinks

Itelcond - Electrolytic Capacitors

PSL is the UK agent and distributor of ITELCOND aluminium electrolytic capacitors. Itelcond are manufacturers of a wide range of excellent quality electrolytic capacitors, as well as having expert facilities to manufacture specialist capacitors and capacitor banks.

Itelcond - Electrolytic Capacitors

ICAR - Power Electronic Capacitors

Manufactured in Italy, ICAR supply the finest quality Power Electronic Capacitors in Europe. PSL Assemblies are the UK agent and distributor for ICAR, and we can offer a wide range of standard capacitors as well as specialist and custom capacitors.

ICAR - Power Electronic Capacitors

Electronic Enclosure - Work in Progress picture

Prototype design and assembly of complex power electronic enclosure. All procurement, design, technical support, and assembly carried out in our premises in Dunstable.

Electronic Enclosure - Work in Progress picture

HV inverter Sub-Assembly

Full design, technical support, procurement, heat sink manufacture, electro-mechanical assembly, EPA assembly, and inspection of specialist HV Inverter sub-assembly - for Nuclear Defence application.
Photograph depicts outer packaging/box-build, IGBT modules, assembly with custom-machined Bonded-Fin heat sink.
The inverter weights approx. 250 kgs and is an example of some of the larger assemblies that can be supplied by PSL.

HV inverter Sub-Assembly

Main Rectifier for Rail power conversion application

This rectifier assembly contains a number of power electronic components including: diodes, isolation cells, capacitors, bus bars, custom clamps and brackets. All electro-mechanical assembly carried out in-house, including in-house machining of standard extrusion heat sink.

Main Rectifier for Rail power conversion application

Power Electronic Sub-Assembly

Specialist sub-assembly example, showing array of custom-machined standard-extrusion heat sinks - together with in-house electro-mechanical assembly.

Power Electronic Sub-Assembly

Liquid Cooled Plates

One example of several hundred of bespoke designs of Liquid Cooled Plates manufactured by PSL. We can manufacture any size and design of Liquid Cooled Plates, including any configuration of pipework array in a range of materials.

Liquid Cooled Plates

Diode Assembly for specialist electric rail application

Custom machined heat sink, bespoke clamping & bracket solutions, capacitors, thermal materials and additional power electronic components. This Diode Assembly is manufactured entirely in-house at PSL, and is designed to protect rail power conversion equipment from pantograph surges.

Diode Assembly for specialist electric rail application

Static Transfer Switch

PSL Assemblies Limited design and manufacture all configurations of Static Transfer Switches up to 10,000A, using a combination of bonded-fin heatsinks, extrusion heatsinks and heat pipes to achieve maximum performance with minimum footprint. All STS units are designed and manufactured to client specifications in our factory in Dunstable, Bedfordshire.

Static Transfer Switch