Supply · Karnataka
Solar & Inverter Duty Transformers in Karnataka
Up to 20 MVA. Delivery across Karnataka about 6 days by road, built to the specification your utility or project issues.
Tanks awaiting core-and-coil assembly
Logistics and network
Supplying Karnataka.
Deliveries across Karnataka start at about 1600 km by road, which puts the nearer cities (Kalaburagi, Belagavi, Hubballi) within 6 days of dispatch. The state's demand centres on Bengaluru electronics and aerospace, Pavagada solar park, Bellary and Hospet steel, Mangaluru port and refinery, Belagavi foundries, Hubballi-Dharwad engineering.
Distribution in Karnataka is handled by BESCOM, MESCOM, HESCOM, GESCOM and CESC Mysuru; KPTCL runs the transmission network. Programmes now in execution include RDSS, Pavagada and Tumakuru solar parks, Gruha Jyothi, 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 Karnataka.
- Design ambient 45 °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 BESCOM 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 Karnataka take?
Can you build to the BESCOM specification?
Do you supply private buyers and contractors across Karnataka, not only utilities?
Send us your Solar & Inverter Duty Transformers schedule for Karnataka.
Ratings, quantities, the specification you are buying against and the delivery point. We return a quotation with a firm delivery programme.