Supply · Nigeria
Solar & Inverter Duty Transformers in Nigeria
Up to 20 MVA. Manufactured in India to IS and IEC standards and shipped to Nigeria: Ex Factory or FOB Mundra / Nhava Sheva.
Tanks awaiting core-and-coil assembly
Logistics and network
Shipping to Nigeria.
Consignments for Nigeria move Sea from Nhava Sheva or Mundra to Lagos (Apapa or Tin Can Island), then road. Typical transit is 25 to 35 days; discharge at Lagos: Apapa / Tin Can Island; Onne for the Niger Delta. We quote Ex Factory or FOB Mundra / Nhava Sheva, with payment by LC at sight or advance, USD.
The grid runs at 50 Hz with 415/240 V low-voltage supply and 11 kV and 33 kV distribution (grid code nominal levels 330, 132, 66, 33 and 11 kV). Distribution is operated by Transmission Company of Nigeria (TCN) and the eleven DisCos (Ikeja, Eko, Abuja, Kano, Port Harcourt and others), regulated by Nigerian Electricity Regulatory Commission (NERC); NEMSA for installation safety. Import conformity: SONCAP: a Product Certificate (PC) and a SONCAP Certificate (SC) issued by a SON-appointed agency before shipment, presented at the port; transformers are a stated SON testing focus.
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 Nigeria.
- Climate and site: Hot humid coast (Lagos, Port Harcourt) with heavy corrosion exposure; dry Sahel north (Kano) with dust and 45 °C ambient.
- Built to IEC 60076 for 50 Hz, with insulation levels for the 11 kV and 33 kV distribution (grid code nominal levels 330, 132, 66, 33 and 11 kV) and 415/240 V secondaries; temperature-rise limits and cooling sized for the stated ambient and altitude.
- Fittings, bushings and tap-changer ranges follow the utility specification (Transmission Company of Nigeria (TCN) and the eleven DisCos (Ikeja, Eko, Abuja, Kano, Port Harcourt and others)); type-test certificates from CPRI or ERDA accompany the offer.
- Documentation: commercial invoice, packing list, certificate of origin, test certificates and the import conformity certificate where Nigeria requires one.
Questions
Frequently asked.
How long does delivery of Solar & Inverter Duty Transformers to Nigeria take?
What documents and certificates come with a consignment to Nigeria?
Which standard and voltage class do you build to for Nigeria?
Send us your Solar & Inverter Duty Transformers schedule for Nigeria.
Ratings, quantities, the specification you are buying against and the delivery point. We return a quotation with a firm delivery programme.