PAPF = SART = SAPS
They are all the same, a self-administered pension scheme, where you choose the investments, the company or the member can pay contributions (usually company because it can pay the higher levels that you mentioned).
The 146% is a bogus figure - the amount that can be put in is the amount to fund a revenue maximum pension (basically 2/3 rds of final remuneration)...this may be up to 500% (for example, more sometimes) of salary - but the max fund is €5million.
The amount that can be put in depends on a person's age, length of service with their company to reirement, and the pension fund they have built up so far.
I hope this helps.