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Protection Features
Check out our PSUs 101 article to learn more about PSU protection features. Â
Our protection features evaluation methodology is described in detail  here.
| Protection Features | |
|---|---|
| OCP | 12V: ✗ 5V: 27.4A (137%) 3.3V: 25.8A (129%) 5VSB: 5.3A (207%) |
| OPP | 596.646W (151.4%) |
| OTP | ✓ (135°C @ secondary side) |
| SCP | 12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓ |
| PWR_OK | Operates properly (but less than 1ms delay time) |
| NLO | ✓ |
| SIP | Surge: MOV Inrush: NTC thermistor |
Over-current protection on the minor rails is set at normal levels, given our experience so far. Conversely, it's quite high at 5VSB, though we didn't encounter over-limit ripple or out-of-spec load regulation.
SilverStone seems to be quite confident in this small PSU, since it has set OPP at 151%. In our opinion, a value closer to 125% would be more suitable.
Moreover, there is OTP, which is well configured, and all rails are protected against short circuit.
Although the power-good signal is accurate, it isn't at least 1ms away from the actual hold-up time, as the ATX spec dictates. Beyond that, the small NTC thermistor doesn't do a very good job of limiting inrush currents.
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