The table below summarises the plug types, voltage and frequency of electrical current in both Angola and Iran.
|Frequency of electrical current||50Hz||50Hz|
Angola uses Plug Type C.
No adaptor needed
Iran uses Socket Type C, which is the same as the plug type of your appliances from Angola. You will not need an adaptor.
The voltages found in Angola (220V) and Iran (230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Angola and Iran is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.