Umunara w'itumanaho (nanone amashanyarazi pylon, umunara wa hydro muri Kanada, na pylon mubwongereza) ni inyubako ndende, ubusanzwe umunara wa lattice wakozwe mubyuma bikoreshwa mugushigikira umurongo w'amashanyarazi. Muri gride y'amashanyarazi, iminara yohereza itwara imirongo ikwirakwiza amashanyarazi atwara amashanyarazi menshi kuva kuri sitasiyo kugeza kumashanyarazi, aho amashanyarazi agezwa kubakoresha amaherezo; byongeye kandi, inkingi zingirakamaro zikoreshwa mugushigikira imiyoboro yo hasi ya voltage yohereza no gukwirakwiza imirongo itwara amashanyarazi kuva mumashanyarazi kugeza kubakiriya b'amashanyarazi.

Hariho ibyiciro bine byiminara yoherejwe: (i) umunara uhagarikwa, (ii) umunara wanyuma wapfuye, (iii) umunara wuburakari, na (iv) umunara wimurwa. Uburebure bw'iminara yoherejwe buva kuri metero 15 kugeza kuri 55 (49 kugeza 180); , hagati y'ibirwa Jintang na Cezi mu ntara ya Zhejiang, mu Bushinwa. Umwanya muremure wambukiranya amashanyarazi ni Ameralik Span yumurongo wamashanyarazi wa Ameralik fjord, ufite uburebure bwa 5.376 (17,638 ft). Harakenewe indi minara yo gukwirakwiza hagamijwe kugabanya imihindagurikire y’ikirere, bityo mu myaka ya za 2020 iminara yoherejwe ikaba ingenzi muri politiki.

Iminara yohereza imirongo isanzwe ishyirwa muburyo ukurikije imiterere, harimo ubwoko bwikirahure, ubwoko bwinjangwe, ubwoko bwo hejuru, ubwoko bwumye nubwoko bwindobo. Ukurikije imikorere yacyo, hariho iminara yohereza imirongo ya tension, iminara yo guhererekanya ihagarikwa, iminara yohereza imfuruka, iminara yohereza imfuruka (iminara yanyuma), iminara yambuka imigezi, nibindi.