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Cathodic Protection TR Unit — Oil Cooled

Oil-immersed transformer rectifier for high-duty and high-ambient cathodic protection sites where continuous full-load output is required.

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pricing by enquirylead time on request
Specifications05 rows
Input
220 VAC 1-phase 50 Hz, or 380/400 VAC 3-phase 50 Hz
Output voltage
0-25 / 0-30 / 0-48 / 0-50 / 0-60 / 0-70 / 0-75 VDC
Output current
15 A to 130 A
Cooling
Oil immersed, natural convection
Enclosure
IP-65 weatherproof; SS-316L option
built to date · 05

Standard build configurations

Configurations of this unit built to date. Ratings outside this list are quoted against the same platform.

  1. 010–48 VDC 48 Aoil-cooled
  2. 020–50 VDC 50 Aoil-cooled, single channel
  3. 030–70 VDC 70 A and 0–70 VDC 50 Awith 380 VAC input
  4. 040–50 VDC 100 Aoil-cooled with 380 V 3-phase input, single channel
  5. 050–75 VDC 130 Aoil-cooled, multi-channel, IP-65 with SS-316L casing
Features · 04
  • Oil-immersed transformer and rectifier stack for high continuous duty
  • Higher overload tolerance and longer life in hot, dusty environments
  • Thyristor or tap-controlled output adjustment
  • Externally mounted meters and controls, sealed tank
Options · 04
  • Single, dual, triple or four independent output channels
  • SS-316L casing for coastal and sour-service locations
  • Current interrupter
  • 3-phase input for ratings above approximately 50 A
Applications · 03
  • Long-haul gas transmission pipelines
  • Refinery and terminal CP stations
  • Chemical and nuclear plant buried services
Related · Cathodic Protection SystemsAll Cathodic Protection Systems
Cathodic Protection TR Unit — Air Cooled
Thyristor-controlled transformer rectifier for impressed-current corrosion protection of buried pipelines and tank farms, in a naturally ventilated enclosure.
0–75 VDC · 5–130 A
Multi-Channel Cathodic Protection TR Unit
One enclosure, two to four independently adjustable and metered CP outputs — a single AC feed protecting several isolated structures or groundbeds.
0-10 to 0-50 VDC, 5 A to 80 A
Portable / Wheel-Mounted CP Survey Rectifier
Transportable temporary-protection and DCVG survey rectifier for commissioning, close-interval surveys and interference testing.
0-25 VDC 25 A typical; 0-15 VDC 10 A and 0-45 VDC 20 A also built