Ama-insulators eposi asetshenziswa kakhulu kumasistimu aphansi kuye phezulu, kokufaka okuhlukile, kukhona ama-insulators wokuthunyelwe komugqa kanye nabavikeli besiteshi esiteshini.
Ama-post post insulators abekwe esigxotsheni sikagesi kulayini wokudlulisa. Ngokwokusetshenziswa nendawo okufakwe kuyo esigxotsheni, ama-insulators okuthunyelwe komugqa ahlukaniswe ngezinhlobo eziningana: Ama-Insulators we-Tie Top Line Post, ama-Insulators we-Horizontal and Vertical Line Post, ama-Under Arm Line Post Insulators kanye ne-Clamp Top Line Post insulators.
Ama-station post insulators ahlinzeka ngosizo lokuvikela nokwakhiwa kwezikhungo zokuphehla ugesi, ukudluliswa nokusatshalaliswa kwesiteshi, nezinye izikhungo zikagesi ezifika ku-1100kV.
Ama-post insulators angenziwa nge-porcelain ne-silicone polymer. Zenzelwe izimakethe ezahlukahlukene futhi zenziwe ngobukhulu obujwayelekile, ukuze zikwazi ukuhlangabezana nezidingo zikagesi nezomshini zama-IEC, amazinga we-ANSI noma imininingwane yamakhasimende.