The UTM-62P3 is the practice version of the live TM-62P3, and uses the UMWCh-62 fuze in these photos.
It is similar in form and size and has the cyrillic "У" (U) added to the name to indicate that it's inert trainer.
Height w/fuze : 110mm
Height w/o fuze : 85mm
Diameter : 315mm
Weight : 9kilo.
Photos below and on the right © M. Jochoms.