A Network Rail approved Rated Capacity Indicator.

Series Three

Market-leading safety solutions for rail

GKD Technologies is the leading supplier of envelope and load control systems for Road Rail Vehicles (RRV’s) in the UK. The Series 3 is specifically developed for the rail industry and has achieved full Network Rail RIS-1530-Issue 6 approval.

The system meets all the requirements for tandem lifting, overnight working, working under overhead cables, and adjacent and open line operation. With over twenty-five years of development, the Series 3 represents ultimate reliability and accuracy.

It uses the latest sensor technology to monitor the machine’s load status and compares it to the machine’s true lift capacity while monitoring the boom position, slew, gradient, rail cant, and axle lock configuration. By continuously calculating this data, the operator is able to make full use of the machine’s lift capacity in every position.

The state-of-the-art touch screen display increases performance, reliability, durability and ruggedness, as well as optimising the interface and information shown to the operator.

Why choose Series 3?

Key features

  • Full Network Rail RIS-1530-Issue 6 approval as a High Performance Movement Limiting Device.
  • Intelligent control ensures machine can be recovered to the safe working zone but prevents movement further into overload.
  • Capable of tandem lifting with no additional de-rate or panel restrictions.
  • Hydraulic motion cut provides graduated, smooth control of hydraulic functions as they approach the set limits.
  • Multi-point virtual wall capability, as well as height and slew limits.
  • Easy (push button) lifting duty selection, with 57 zones within the slew rotation.
  • Optional key switch controls enable supervisor limit setting and system isolation.
  • All actions are logged to support training, best practise review and near-miss or accident reporting.

A reliable high performance device

To attain approval for working in close proximity to live overhead wires or adjacent to open rails, the Series 3 Rated Capacity Indicator has been extensively enhanced to protect against system sensor malfunction, software inconsistency and electronic failures.

  • Dual processing verification.
  • Dual sensors.
  • Gyro compensated gravity angle sensors.

Suitable for use on road rail excavators and road rail MEWPs.

A game-changer for tandem lifting

Increase the utilisation and productivity of your Road Rail Vehicles by using the Series 3 wireless tandem lift system.

Typical requirements for tandem lifting mean that the RRV’s have to be de-rated in terms of their lifting capacity and are restricted in terms of the size of rail panel that can be lifted.

The Series 3 tandem lift system enables machines to be used without any additional de-rate and without panel restrictions, meaning productivity is increased and your operations run more efficiently.

There is no need for the two machines to be identical and can be specified on new RCI systems for conversions or upgrades.

How it works

The system utilises dedicated software to monitor, control and co-ordinate the lifting of two machines both fitted with GKD rail RCI systems.

Continuous communication between the two RCI systems via a pair of dedicated modems ensures that either machine does not exceed its limit, or the limit of the paired machine.

A dedicated wireless tandem lift screen on the RCI display provides information for both paired machines for Load On Hook, SWL, Overload and Motion Cut status.

MEWP integration

The Series 3 system has been built to support the safe use of Road Rail Mobile Elevated Work Platforms (MEWPs). It is fully approved for use on Adjacent Line Open (ALO) and Overhead Line Equipment (OLE) operations.

How it works

While a machine is moving, Series 3 for MEWP will protect the machine from moving into unsafe positions.

The system monitors the boom position, slew, gradient, rail cant, and axle lock configuration.

It also allows for the setting of safe working parameters for machine rotation and boom height and will only allow movements within the preset safe working zone.

Take a look at the system in action below:

Get in touch

Do you want more information on the Series 3? If so, complete the form below and a member of our team will get in touch with you.

Discover more


Series 3 brochure

Download the Series 3 product brochure


MEWP brochure

Download the Series 3 for MEWP brochure


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