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IEC I-Drive® SCR systems are designed to meet the requirements of the most demanding drive applications. Available in five models -- the I-Drive 600, I-Drive 1200, I-Drive 1850, I-Drive 2500 and the I-Drive 3500, IEC offers a broad selection of power options to the meet the specific requirements of a wide range of customer uses.

I-Drive SCR designs are proven in a number of applications including oil and gas drilling, marine propulsion and the powering of heavy equipment used in the mining and scrap industries. These systems are built for reliability and long-term durability, but when service is required the I-Drive system is designed for ease of maintenance. Specific I-Drive features include:

All control electronics housed in a single plug-in module, reducing troubleshooting time. Replacement of the easy- access control module requires only a few minutes
All testing and "burn-in" of control module components based on military spec
Modular phase cell design provides for easy access, allowing for removal and replacement in less than 10 minutes
Optional design utilizing isolated brick technology
All control logic designed to open contactors at zero current, extending contactor life
Employs the same style as the AC switchgear, reducing the need for many spare components
All bus arranged vertically in the bridge section, allowing for improved cooling
Systems designed for bulkhead or back-to-back mounting, with all bus connections and components readily accessible from the front of the unit

I-Drive Consoles

Designed for the most demanding of environments -- the drilling rig floor, ship's bridge or heavy equipment control panel -- I-Drive consoles feature a space-efficient, compact design and rugged construction. Engineered by people who have used them, these consoles also feature readily accessible controls and easy-to-read metering.

Generator Control

Designed to work in conjunction with I-Drive SCR systems, IEC generator control systems feature all standard meter movements of 5 VDC full scale, programmable automatic engine alarming and shutdown, automatic KVAR sharing and load shift, along with programmed engine warm-up and cooldown.
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Marine Propulsion Systems

I-Drive diesel-electric SCR propulsion systems can be used in a wide range of vessels, including semi- submersible and jack-up drilling rigs, tugboats, supply boats, sternwheelers and naval research vessels.

These advanced design vessels normally utilize three or more diesel-powered AC generators, running in parallel, feeding a common electrical switchboard. From the switchboard, the AC current generated through the diesel-generator set is fed to SCR units, which convert the AC current to DC and send the power to propulsion motors, thrusters, tow winches, etc. In addition, AC power is distributed from the switchboard to auxiliary items such as lighting, pumps and air compressors.

IEC can be your SCR Connection for marine drive systems, offering a high level of experience and technical expertise in each I-Drive marine system. The management team of IEC offers the combined experience of hundreds of SCR powered marine installations in developing the power system optimally designed for the specific requirements of each application.

The Advantage of DC Drive

A key advantage of the I-Drive SCR system is that it allows the use of DC electric motors for powering the vessel, instead of conventional diesel power. The diesel engine develops both horsepower and torque with the increase in engine RPM, delivering only limited torque at low RPMs. The DC traction motor, by contrast, can provide 100% torque at all RPMs.

In addition, while the diesel engine cannot be safely operated above 100% rated RPM, the DC traction motor can be run for extended periods of time at up to 150% of maximum RPM. In this case, the horsepower developed by the DC motor remains constant, while the torque is reduced, allowing RPMs to exceed 100%.

I-Drive Marine Design Advantages

Although it is highly beneficial to place engines forward in a marine vessel, most diesel engines are located aft in order to reduce the length of the shafting required. This compromise normally reduces cargo space and involves long and expensive exhaust and intake piping, which can also cause excessive exhaust back pressure and reduced engine efficiency.

IEC I-Drive system, by contrast, allows for the diesel engines to be mounted in the front of the vessel, with the propulsion motors mounted aft. Since the weight of the main engines is located forward in this configuration, less forward trim ballast is required to compensate for aft loaded cargo, and more displacement is available for payload.

The Advantages of the I-Drive SCR System

Engines are normally located forward under stacks
Engines operate at constant RPM, with no possibility of overload or blackouts
Engines can be placed on- or off-line during operation
No need for clutch or reverse gear
Only 5 - 10 seconds required for propeller reversal
Infinitely variable propeller speed control, from 0 - 1800 RPM with no transmission required
Only one auxiliary generator required (where Marine Code allows)
Single starting, fuel, lube and exhaust systems

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SCR Drilling Systems

Designed to meet the performance challenge of the oil and gas drilling application, IEC's I-Drive SCR systems offer a solid combination of reliability, durability and versatility, ease of maintenance and repair, and a wide selection of power options.

Land Rig SCR house

The quality of design and construction of the I-Drive system is enhanced by the expertise of the IEC technical applications group, which is committed to working with you to best match a power system to the requirements of your drilling program. Highly experienced and seasoned, the IEC applications team can optimize advanced SCR technology for your specific requirements.

Inside SCR house

On-Site Rig Service

I-Drive Certified Service adds to the long-term value of an IEC SCR system by providing the added dimension of responsive professional service, when it is necessary. I-Drive Certified technicians are experienced and trained professionals whose focus is on making sure that your rig is back on line as soon as possible.
In addition to repair service, I-Drive Certified Service also includes equipment installation and rig start-up, retrofit of drilling rigs, and consultation/design for drive systems.

Offering advanced SCR drive, combined with in-depth application expertise and knowledgeable, effective service, IEC is the SCR Connection.

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