Heavy-duty 3-phase asynchronous, wound rotor, and slip ring electrical machinery custom-engineered to pair with high voltage solid-state soft starters for optimal starting torque and zero grid disturbance.
Across the industrial infrastructure of Iraq—spanning the oilfields of Basra, West Qurna, and Rumaila, to the water pumping complexes of the Tigris-Euphrates basin and the heavy cement plants in Muthanna and Sulaymaniyah—large medium voltage (MV) and high voltage (HV) induction and synchronous motors form the core driving force. However, starting high-power electrical motors (ranging from 200kW to over 20,000kW at 3.3kV, 6.6kV, 10kV, and 11kV) poses severe electrical and mechanical challenges to local facility infrastructure.
Direct-on-line (DOL) starting draws inrush currents up to 600% to 800% of Full Load Current (FLC). On Iraq's utility supply or localized diesel-generator power grids, such massive electrical surges induce catastrophic line voltage sags, frequency fluctuations, nuisance tripping of upstream breakers, and intense electrodynamic stress on motor windings. Furthermore, mechanical shock loads destroy gearboxes, couplings, and pump impellers. As an established global High Voltage Soft Starter Manufacturer & Factory, TDC Parsons Peebles delivers solid-state High Voltage Soft Starters (HVSS) specifically tailored to resolve Iraq's unique industrial power constraints.
A High Voltage Soft Starter utilizes series-connected silicon-controlled rectifiers (SCRs) or thyristor assemblies per phase to smoothly ramp up the motor terminal voltage from an adjustable initial voltage up to full mains potential. Controlling the phase angle firing of these anti-parallel thyristors achieves precise stepless control of motor starting current and torque.
| Technical Parameter | Standard Commercial Grade | Heavy-Duty Iraqi Industrial Spec (TDC Parsons Peebles) |
|---|---|---|
| Voltage Ratings | 2.3kV, 3.3kV, 6.6kV | 3.3kV, 6.6kV, 10kV, 11kV, up to 15kV (50Hz / 60Hz) |
| Ambient Thermal Rating | 0°C to +40°C Standard | -10°C to +55°C Continuous (Tropicalized Heat Exchanger Design) |
| Triggering Signal Transmission | Pulse Transformers (Noise Susceptible) | Fiber-Optic Light Guide Triggering (Complete Galvanic Isolation) |
| Enclosure Ingress Protection | IP31 / IP42 Indoor | IP54 / IP55 Outdoor NEMA 4X Sandstorm Filter Enclosure |
| Bypass Mechanism | None or External Contactor | Integrated Vacuum Bypass Contactor (Zero Running Power Loss) |
| Protective Coating | Standard PCB Varnish | Class 3C3 Anti-Corrosion conformal coating for H2S and saline dust |
To operate reliably in high-voltage environments, our HVSS units integrate fiber-optic triggering technology. Signals between the low-voltage digital control processor and the high-voltage thyristor gate drivers travel via fiber-optic cables, ensuring total electrical isolation, immune to electromagnetic interference (EMI) and high-voltage transients inherent in heavy industrial facilities.
Industrial operations in Southern and Central Iraq experience extreme weather conditions. Standard off-the-shelf starters overheat and fail. Our factory engineers soft starters with specialized cooling and environmental isolation modules.
Incorporates oversized heat sinks, redundant closed-loop air-to-air heat exchangers, or forced liquid cooling modules. De-rating formulas are built into the firmware to ensure continuous rated operation in Basra summer heat without thermal tripping.
Heavy sandstorms (Shamal winds) carry ultra-fine quartz silica dust. Our cabinets feature double-gasketed doors, positive-pressure air filtration system, and heavy-duty sand traps to isolate high-voltage thyristor bridges from conductive dust build-up.
Once the motor reaches full synchronous or rated speed, an internal vacuum bypass contactor automatically closes, transferring full load current away from the SCRs. This cuts thermal cabinet dissipation by 98% and saves significant operational energy.
TDC Parsons Peebles designs customized high voltage soft starter panels engineered to seamlessly integrate into Iraq’s primary industrial sectors. Below are field-proven application scenarios where our soft starters deliver decisive operational reliability:
In Iraq’s crude oil extraction and refining plants, high-power motors drive crude transfer pumps, water injection pumps for enhanced oil recovery (EOR), wet gas compressors, and refinery blowers. Many of these motors operate in classified Ex hazardous locations (Zone 1 or Zone 2, Ex d / Ex p).
Pumping stations drawing water from the Tigris and Euphrates rivers utilize multi-megawatt vertical turbine pumps and large horizontal centrifugal pumps. DOL starting causes violent fluid pressure waves known as "water hammer," resulting in burst pipelines, failed check valves, and massive infrastructure repairs.
Our High Voltage Soft Starter incorporates a dedicated Pumping Control Ramp Logic. By controlling both the voltage ramp-up during starting and ramp-down during stopping, fluid velocity changes linearly, entirely eliminating hydraulic surges and extending pipe network longevity across Iraqi water projects.
Raw mills, ball mills, rotary kilns, and jaw crushers represent high-inertia heavy-load start applications. Starting a loaded ball mill requires high initial breakaway torque without exceeding grid power limitations.
Our soft starters feature Pulse Kick-Start (Torque Boost) Logic. The starter delivers a short, controlled pulse of voltage during the first fraction of a second to overcome static mechanical friction, followed by a smooth acceleration ramp, protecting both the electrical network and the mechanical gear train.
Answers to common engineering queries raised by Iraqi EPC contractors, factory managers, and Ministry procurement specialists.
While Variable Frequency Drives (VFDs) provide continuous speed control, they are significantly more expensive, physically larger, sensitive to desert ambient heat, and introduce heavy electrical harmonic distortion requiring complex filtering. If your process runs at fixed nominal speed (e.g., pumps, fans, crushers), a High Voltage Soft Starter provides 100% smooth, current-limited starting at approximately 30% to 40% of the cost of a VFD, with lower heat loss, higher reliability, and smaller footprint.
We manufacture solid-state MV/HV soft starters for standard global and Middle Eastern voltage levels: 3.3kV, 6.6kV, 10kV, and 11kV at 50Hz. Custom ratings up to 15kV and motor capacities up to 30MW can be engineered upon request.
Yes. Weak utility grids and captive diesel/gas turbine power generators are widespread in Iraq. Our soft starters feature programmable Current Limiting Start Mode (adjustable from 150% to 400% FLC). This restricts power draw so generator frequency and voltage remain stable during startup, preventing emergency generator tripping.
All printed circuit boards (PCBs) and gate control electronics undergo IPC-CC-830 Class 3C3 conformal coating. High-voltage thyristor stack assemblies are isolated in sealed phase chambers with creepage distances exceeding IEC standard requirements, combined with heavy-duty anti-condensation space heaters.
Every soft starter manufactured in our factory undergoes rigorous FAT testing, including high-voltage insulation dielectric withstand tests, full functional fiber-optic gate trigger verification, heat run testing, and simulated load testing. Full FAT documentation, routine test reports, electrical schematics, and ISO 9001 certificates are supplied with shipment for Ministry and consultant approval.
Yes. We provide complete technical support including remote engineering commissioning assistance, field service engineer dispatch, comprehensive spare parts packages (SCR modules, fiber-optic trigger cards, main control boards, vacuum contactors), and training for local operational staff.
With over 128 years of rotating electrical machinery and power control expertise tracing back to our original UK engineering roots (Parsons Peebles), our organization brings unparalleled technical authority to high-voltage motor control systems.
We do not offer rigid off-the-shelf enclosures. Every High Voltage Soft Starter is tailored to your exact motor nameplate parameters, ambient site temperatures, available footprint, switchgear protection relays, and SCADA communications protocols (Modbus RTU/TCP, Profibus, Ethernet/IP).
Our manufacturing facilities comply strictly with ISO 9001 quality management systems, IEC 60947-4-2 standards for solid-state MV starters, IEEE 1566 standards, and ATEX/IECEx hazardous area safety directives.
Because we manufacture both high voltage induction motors, wound rotor slip ring motors, and soft starters, we understand exact electromagnetic motor dynamics. This guarantees optimized torque acceleration without risk of motor harmonic overheating or insulation degradation.
Need a high voltage soft starter quotation, motor-starter matched specification, or urgent project replacement panel for your facility in Basra, Baghdad, Erbil, or regional industrial zones? Contact our engineering team today.
