AERL technical documentation

CoolPro Surge Buster — Datasheet Rev 1.0.0

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Download PDF· Rev 1.0.0 CoolPro Datasheet

Surge Buster

Lightning Protection Module for the CoolPro

AERL Surge Buster board, illustrative line drawing
50kARating, 8/20 µs
500JEnergy absorption
26MOVs4.5 kA each
85VMax working voltage
aerl.com.au Cathodic Protection · Surge Protection Datasheet · Rev 1.0.0 · 2026

Specifications

Surge Buster · SURGE-BUSTER

The Surge Buster is a lightning protection module for the AERL CoolPro cathodic converter. Its twenty-six 4.5 kA metal oxide varistors (MOVs) give common-mode and differential surge protection on the CoolPro’s input, output and local cabinet earth, with a rated output capability of 50 kA (8/20 µs). It also protects the interrupt control and reference cell connections.

When it is requiredThe Surge Buster is required only in lightning-prone applications: pipelines or structures longer than 100 metres or higher than 10 metres. There, install the CoolPro with an AERL Surge Buster to supplement its on-board surge protection; lightning damage to a CoolPro installed in such an application without one is not covered by the warranty. Elsewhere the Surge Buster is optional.

Surge Buster board, illustrative top view
Illustrative top view, not to scale. Safe side at the top, surge side at the bottom.

Surge ratings

Output current, 8/20 µs
50,000 A
Energy absorption, 8/20 µs
500 J
Energy absorption, 10/1000 µs
230 J
Varistors
26 × 4.5 kA MOVs
Protection
Common-mode and differential
Maximum working voltage
85 V

Current and energy ratings are non-repetitive.

Ordering

Part number
SURGE-BUSTER
Warranty
2 years

Connections

Surge side
DC supply input, anode (ground bed), cathode (structure)
Safe side
CoolPro input and output
Earth
To the cabinet chassis
Power terminals
M5 screw
Interrupt input
Opto-isolated, 8–30 Vdc, to Link On/Off

Mechanical

Construction
Bare PCB, mount in an enclosure

Installation

  • Wire as the CoolPro manual’s wiring diagram
  • Connect the earth terminal to the cabinet chassis
  • Protect the bare board from moisture and vermin
  • Route cables downwards, away from the board
  • Output circuit breaker or fuse not recommended
  • Interrupt sequencer: 8–30 Vdc input

AERL reserves the right to change any product, product specifications and data without notice to improve reliability, function, or design or otherwise.

Manufactured by

Australian Energy Research Laboratories
1/75 Bluestone Circuit, Seventeen Mile Rocks QLD 4073

Origin and warranty

Australian made2-year warranty

Contact

[email protected]
1800 950 865
aerl.com.au