Palestine runs on 230 V at 50 Hz, with sockets following Types C and H. At 230 V the supply matches what UK and European appliances expect, so no converter is needed.
Handy for multi-stop trips: Israel use the same plug types. Travelling further to Oman, Sri Lanka and Singapore means a different adapter. 2 of the 50 destinations in Asia share the plug types of Palestine.
Protective earth
Grounded and ungrounded sockets may occur
Earthed sockets (Type H) and unearthed ones (Type C) exist side by side. For metal-bodied appliances the protective-earth path is what matters.