pml design and manufacture a range of transformer rectifier units for the cathodic protection industry.
Oil or Air cooled Units can be supplied as follows:
- Single or Three Phase ac input
- Constant Voltage, Potential
Controlled or Constant Current - Single or multi channel outputs
- Thyristor, Variac, or Step dc
output control - Analogue or digital meters
Enclosures (Protection up to IP65)
- Mild steel
- Stainless steel
- GRP
All units are fully inspected and tested before leaving our workshop. Test procedures include:
- Circuit connection checks
- Full load operation
- Heat run tests for a minimum
of 12 hours - High voltage insulation
resistance tests
Optional Features to meet client specifications:
- Current Interrupters
- Heaters
- Alarms
- Watt or Hour meters
Coating
- Polyester powder
- Polyurethane
- Epoxy
- Zinc flame spray
- To suit client specification
Mounting
- Plinth
- Frame
- Wall
- Inside large GRP cabinets
- Pole
Junction Boxes
pml produce a wide range of bespoke junction boxes for cathodic protection applications including Negative distribution, anode termination, current control and bonding.
Enclosures
- Coated or galvanised steel
- Stainless steel
- Aluminium
- Fibreglass
- GRP
Protection up to IP65 is available and EExd and EExe rated products are also available for hazardous area locations.
Internal panels are manufactured and tested in the pml workshop.