User's Manual

04
In primary circuit of the power supply , a protected fuse is inserted. Only internal fault of the power supply
will cause the fuse blown. Any overload or short circuit at DC output will keep from fuse brown or fire hazard.
4.1 Input Protection
The +5V/+12V/+3.3V DC output are protected against the under voltage condition . range value can't
be exceed 3.3~3.7V at 5V terminal and 8.5~9.5V at 12V, 2.0~2.4V at 3.3V.
4.2 Output Protection
4.2.1 Under voltage protection
The +12V/ DC output are protected against the over voltage condition . Maximum value can't be over
15.5V at 12V.
4.2.2 Over Voltage Protection
The power supply can be used electronic circuit to limit the output current against exceeding 10%-60%
of surge output power or protected against excessive power delivery since short circuit of any output
or over total power at high line.
4.2.3 Over Power Protection
4. Protection
5.1 No Load Start
5. Start Stability
Short circuit placed on +5V,+12V,+3.3V,-12V will latch off. +5VSB will auto-recovery.
4.2.4 Short Circuit Protection
This power supply includes an over-temperature protection sensor, which can trip and shut down the
power supply at 110℃
4.2.6 Over-Temperature Protection
Current protection should be designed to limit the current to operate within safe operating conditions.
Over current protection schemes where only the voltage output that experiences the over current event
is shut off may be adequate to maintain safe operation of the power supply and the system; however,
damage to the motherboard or other system components may occur. The recommended over current
protection scheme is for the power supply to latch into the shutdown state. The setting of over current
protection for each output rail is as following.
When power is applied to SX700-LPT with no load connected or under minimum load connected, neither
damage to power supply nor hazards to users will occur.
5.2 Cold Start
The power supply shall operate properly when first applied at normal input voltage and or so maximum
load after 4 hours storage in 0℃ environment.
4.2.5 Over-Current Protection
6.1 Temperature and Humidity
6. Environments
6.1.1 Operating
Temperature 0 to 40C
Relative Humidity 20 to 90 %
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