ZE- An NG 2-8-2 loco with 6-wheel tender, some built by Kawasaki Rolling Stock of Japan, in 1955; was in service in CR, SER. This ZE class is not the same as the IRS class ZE specified in 1925. Some ZE's were imported from Germany in the 1980s. Most were based in Nainpur by the late 1980s.
Source-http://www.irfca.org/faq/faq-loco-steam.html