I 4K

I-4K is a satellite bus being developed by Indian Space Research Organisation (ISRO). It will be a standard bus for 4,000–5,000 kg (8,800–11,000 lb) class communication satellites; the I in I-4K stands for INSAT, a group of communication satellites developed and launched by ISRO. The I-4K spacecraft bus can supply DC power of 10 to 13 kilowatts.