CEMarked CEMarked As heavy industries across the Western Province, Hambantota Industrial Zone, and Katunayake Export Processing Zone upgrade their infrastructure, hazardous-area safety and power quality reliability have become mission-critical. Leveraging over three decades of control automation heritage originating from Prima Automation (India) Pvt. Ltd. (est. 1990) and Prima Transformers Pvt. Ltd. (est. 2006), our pressurized panels (Ex p) and industrial magnetic systems deliver certified protection against explosive gas atmospheres, airborne combustible agricultural dusts, severe tropical ambient heat, and marine corrosion.
Robust electrical and control architecture designed to integrate into demanding pressurized systems, drive line circuits, and local electrical grids.
Microprocessor-controlled static regulation counteracting sudden grid dips and surges common in regional manufacturing zones without mechanical wear.
Suppresses high-frequency electromagnetic noise inside sealed control enclosures, ensuring fault-free PLC, sensor, and DCS communication in noisy plants.
Non-flammable, moisture-proof Class F/H insulated dry-type design ideal for commercial facilities, port terminal substations, and pressurized enclosures.
Protects variable speed drives from utility spikes, mitigates harmonic feed into industrial branch circuits, and prevents nuisance tripping in high-vibration plants.
High-reliability ONAN cooling transformer engineered for harsh peripheral distribution networks, remote agricultural pumps, and primary rural tie-ins.
High-efficiency power unit custom-built for large manufacturing floors, cleanrooms, and tea processing plants needing clean, spark-free step-down power.
Turnkey control architecture supporting Ex-p automated purging routines, motor sequencing, continuous telemetry, and local operator touchscreen control.
Class H insulation choke filtering dv/dt wave reflections, suppressing motor winding stress, and extending motor life over extended cable distances.
Engineering considerations addressing Sri Lanka's unique high relative humidity (70-90%), salinity, and hazardous classified zones.
Storage terminals and fuel blending installations handle volatile hydrocarbons classified under Zone 1 and Zone 2 gas groups (IIA, IIB, IIC). Pressurized panels (Ex pz / Ex py / Ex px) introduce dry instrument air or inert gas to maintain an internal positive pressure, preventing flammable vapors from contacting arcing relays, contactors, and switchgear.
Sri Lanka’s central and southern agriculture-processing plants face explosive dust hazards (Zone 21 / 22) generated by pulverized dry tea fibers and starch-rich desiccated coconut mills. Ex-p pressurization keeps fine organic particles from penetrating sensitive motor controllers and HMI units.
Large-scale garment washing, dyeing, and spinning facilities in Biyagama, Katunayake, and Seethawaka require hundreds of variable frequency drives running non-stop in hot, humid machine rooms. Harmonics from non-linear loads degrade transformers and disrupt sensitive PLC line controls.
Port container cranes, dry-dock pumps, and bulk grain terminals operate under constant saline spray and intense UV radiation. Electrical equipment demands pressurized environmental sealing to stop salt fog tracking and premature insulator flashovers.
Emerging requirements guiding electrical system specifications across Sri Lanka through 2025-2030.
| Technological Domain | Conventional Standard in Sri Lanka | Modernizing Standard (2025+) | Operational & Cost Benefit |
|---|---|---|---|
| Hazardous Area Protection | Bulky, heavy cast-iron flameproof (Ex d) boxes | Smart Purge & Pressurized Control Panels (Ex pz / Ex px) | Allows standard industrial components, larger touchscreens, and 60% lighter enclosure weight. |
| Harmonic & Power Quality Control | Simple capacitor banks with high resonance risks | Tuned Line/Load Reactors & Dedicated RFI/EMI Filtering | Prevents drive component failure, lowers thermal loss, complies with CEB/LECO grid limits. |
| Grid Voltage Stabilization | Servo carbon-brush motorized stabilizers | Solid-State Static Electronic Voltage Regulators | Instantaneous millisecond response to grid sags; zero mechanical maintenance and contact erosion. |
| Distribution Magnetics | Standard mineral oil-filled outdoor units | Class F/H Epoxy Cast Resin Dry Type Transformers | Eliminates environmental oil spills, reduces fire clearance zones, and requires zero routine oil checks. |
Backed by 35 years of panel engineering and 5,500 m² of dedicated manufacturing infrastructure.
Founded in 2006 as a dedicated manufacturing arm of Prima Automation (India) Pvt. Ltd. (operating since 1990), we design transformers and filter chokes from the operational perspective of panel builders. We know precise thermal allowances, footprint limitations, and busbar alignments needed in pressurized and sealed enclosures.
Every single unit undergoes rigorous testing inside our Ahmedabad plant prior to overseas crating and dispatch. Testing includes computerized single/three-phase open & short circuit testing, Double Voltage Double Frequency (DVDF) induced overvoltage, Megger insulation resistance, digital LCR verification, and thermal infrared scanning.
Our power transformers (50VA to 5000kVA), reactors up to 2500A, and sine wave filters up to 500HP carry CE markings for global compliance. We support custom secondary multi-tap configurations, marine paint finishes, tropicalized varnishing, and customized footprints matching project retrofits in Colombo, Galle, or Kandy.
Common queries from engineering consultants, EPC contractors, and procurement managers in Sri Lanka.
Traditional Ex d flameproof enclosures rely on heavy cast iron or heavy-gauge steel structures to contain an internal explosion. For large variable-speed drives, multi-rack PLCs, or large HMIs, Ex d enclosures become excessively heavy, difficult to transport, and restrictive in size. Pressurized panels (Ex p) prevent gas ingress entirely by maintaining a light internal positive pressure using clean instrument air or nitrogen. This allows operators to install standard commercial automation hardware, clear touchscreens, and large power components in a lighter, modular, and more cost-effective enclosure suited for coastal port terminals and chemical handling plants.
For installations in the Western Province, Hambantota, or Trincomalee, ambient humidity regularly exceeds 85% with high airborne salt content. We utilize high-grade Class F and Class H vacuum-pressure impregnated (VPI) polyester resin or complete epoxy cast resin encapsulation. Enclosures are manufactured with stainless steel (SS304 or SS316L) or high-grade electro-galvanized mild steel finished with anti-corrosive multi-coat polyurethane powder coatings (complying with ISO 12944 C4/C5 marine environments). Internal space heaters with integrated humidistats eliminate condensation during planned equipment shut-downs.
Our standard manufacturing models for the Sri Lankan industrial market conform to a nominal supply of 400V 3-phase, 230V single-phase at 50Hz (compatible with Ceylon Electricity Board - CEB and LECO transmission standards). Because peripheral industrial zones experience fluctuations between 340V and 440V, we supply automatic voltage regulators with wider input compensation ranges (±15% or ±20%) and custom multi-tap primary configurations on control transformers to deliver steady 230V/110V/24V control secondary outputs.
Every equipment shipment is dispatched with comprehensive documentation including CE Conformity Certificates, Factory Acceptance Test (FAT) records, winding resistance reports, insulation resistance (Megger) data, and induced overvoltage test logs. We support third-party inspection agencies (such as SGS, Bureau Veritas, or TÜV) for client witness testing at our 5,500 m² Ahmedabad facility prior to CIF shipping to Colombo Port.
To receive an expedited quotation, please provide: (1) Total rated power (kVA, VA, or motor kW/HP); (2) Primary and secondary voltage with required tapping ranges; (3) Grid frequency (50Hz); (4) Hazardous area zone classification if applicable (Zone 1, Zone 2, Zone 21, Zone 22, Gas Group, and Temp Class); (5) Ambient operating temperature and ingress protection (e.g., IP54, IP65, Ex p); and (6) Any specific PLC, HMI, or terminal block brand preferences.
Speak directly with our senior application engineers regarding custom pressurized control panels, harmonic suppression reactors, and dry-type distribution transformers tailored to your specific plant environment.
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