Supply · Tamil Nadu
Solar & Inverter Duty Transformers in Tamil Nadu
Up to 20 MVA. Delivery across Tamil Nadu about 8 days by road, built to the specification your utility or project issues.
Tanks awaiting core-and-coil assembly
Logistics and network
Supplying Tamil Nadu.
Deliveries across Tamil Nadu start at about 2240 km by road, which puts the nearer cities (Hosur, Vellore, Chennai) within 8 days of dispatch. The state's demand centres on Chennai and Sriperumbudur auto and electronics, Coimbatore pumps and motors, Tiruppur textiles, Hosur engineering, Salem steel, Tuticorin and Ennore ports, Tirunelveli and Ramanathapuram wind and solar.
Distribution in Tamil Nadu is handled by TANGEDCO; TANTRANSCO runs the transmission network. Programmes now in execution include RDSS, TANGEDCO solar and wind evacuation, and each is tendered against a technical specification that we quote and manufacture to.
The product
A solar transformer is not a distribution transformer with a different label.
An inverter feeds the transformer a non-sinusoidal current with significant harmonic content, and it does so on a duty cycle that is de-energised for roughly half the year. Both facts change the design.
Harmonic currents drive eddy-current heating in the windings that a standard design does not allow for, so conductors are transposed and the core flux density is de-rated to leave headroom. The overnight de-energised period means no-load loss dominates lifetime energy cost far more than it does on a distribution feeder — which is why the low-no-load-loss design is worth paying for here and not always elsewhere.
| Parameter | Specification |
|---|---|
| Rated power | Up to 20 MVA |
| HV voltage | 11 kV or 33 kV |
| LV voltage | 315 / 380 / 415 / 480 / 600 / 690 / 800 V — the inverter output, not 433 V |
| Winding arrangement | Two, three or more secondaries; dual secondary is the norm |
| Duty | Step-up, outdoor, solar or wind generation |
| Frequency | 50 Hz standard; 60 Hz for export |
Specifying
What changes for Tamil Nadu.
- Design ambient 50 °C; seismic classification Zone III for structures and foundations.
- Coastal and industrial exposure: C5-M grade exterior paint, stainless or hot-dip galvanized hardware and heavier zinc coating on steel parts for sites near the coast.
- Temperature rise 45 K winding and 40 K top oil over the stated ambient, or 55 K / 50 K where TANGEDCO specifications allow; losses, impedance and tapping to the utility schedule or IS 1180 level.
Questions
Frequently asked.
How long does delivery of Solar & Inverter Duty Transformers to Tamil Nadu take?
Can you build to the TANGEDCO specification?
Do you supply private buyers and contractors across Tamil Nadu, not only utilities?
Send us your Solar & Inverter Duty Transformers schedule for Tamil Nadu.
Ratings, quantities, the specification you are buying against and the delivery point. We return a quotation with a firm delivery programme.