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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.

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pricing by enquirylead time on request
Specifications06 rows
Input
220 VAC 1-phase 50 Hz, or 380/400 VAC 3-phase 50 Hz
Output voltage
0-15 / 0-20 / 0-24 / 0-25 / 0-30 / 0-40 / 0-50 / 0-60 / 0-75 VDC
Output current
5 A to 130 A
Cooling
Natural air convection
Enclosure
IP-40 / IP-55 / IP-65
Regulation
Constant voltage or constant current, manual tap or automatic
built to date · 04

Standard build configurations

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

  1. 010–50 VDCdual channel with current interrupter, IP-65
  2. 020–25 VDC 25 Aair-cooled, 220 VAC single-phase input
  3. 030–40 VDC 30 Aair-cooled IP-55 with tap adjustment
  4. 040–75 VDC 60 Aair-cooled, single channel
Features · 05
  • Coarse tap-change plus fine thyristor firing control
  • DC voltage and current metering, adjustable output
  • Output surge and lightning protection
  • Hot-dip galvanised, powder-coated or SS-316 / SS-316L casing options
  • Pole, plinth or wall mounting
Options · 04
  • Tap adjustment system for field re-ranging
  • Current interrupter for on/off potential surveys
  • Reference-electrode input and remote monitoring
  • Solar / remote-site variants
Applications · 04
  • Buried gas and oil transmission pipelines
  • Above-ground storage tank bottoms
  • Well heads and gathering systems
  • Plant and terminal buried piping networks
Related · Cathodic Protection SystemsAll Cathodic Protection Systems
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.
0–75 VDC · 15–130 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