{"id":10250,"date":"2024-02-19T04:25:12","date_gmt":"2024-02-19T04:25:12","guid":{"rendered":"https:\/\/www.tigerpower.com\/glossary\/"},"modified":"2024-03-11T08:15:02","modified_gmt":"2024-03-11T08:15:02","slug":"glossary","status":"publish","type":"page","link":"https:\/\/www.tigerpower.com\/ja\/glossary\/","title":{"rendered":"\u96fb\u6e90\u7528\u8a9e"},"content":{"rendered":"

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\u30db\u30fc\u30e0<\/span><\/a> \/ \u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/span> \/ \u96fb\u6e90\u7528\u8a9e<\/span><\/h6>\n<\/h1>\n

\"\"<\/p>\n

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\u96fb\u6e90\u7528\u8a9e<\/p>\n<\/h1>\n

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Common glossaries for power supply units<\/strong><\/span><\/h4>\n<\/div>\n
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(1) Power \/ Voltage \/ Current \/ Power \/ Efficiency<\/span><\/strong><\/h3>\n<\/div>\n
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Phrases<\/strong><\/span><\/h4>\n<\/div>\n
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Unit<\/strong><\/span><\/h4>\n<\/div>\n
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Explanation<\/strong><\/span><\/h4>\n<\/div>\n
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Power Supply Unit (PSU)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/p>\n<\/div>\n

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A power supply unit converts mains AC to low-voltage regulated DC power.<\/strong><\/span><\/h4>\n<\/div>\n
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Alternating Current (AC)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/p>\n<\/div>\n

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Alternating current flow of electric charge that periodically reverses.<\/strong><\/span><\/h4>\n<\/div>\n
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Frequency<\/span><\/strong><\/h4>\n<\/div>\n
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Hz<\/span><\/strong><\/h4>\n<\/div>\n
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The number of AC power cycles in a given time period and measured in Hertz.<\/strong><\/span><\/h4>\n<\/div>\n
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Direct <\/span>Current (DC)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/span><\/h4>\n<\/div>\n
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The unidirectional flow of an electric charge.<\/strong><\/span><\/h4>\n<\/div>\n
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Ripple\u00a0
<\/span><\/strong><\/h4>\n<\/div>\n
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Vac<\/strong><\/span><\/h4>\n<\/div>\n
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Ripple is the residual periodic variation of the DC voltage which has been derived from an alternating current (AC) source.<\/span><\/strong><\/h4>\n<\/div>\n
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Aapparent Power (S)<\/strong><\/span><\/h4>\n<\/div>\n
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VA<\/span><\/strong><\/h4>\n<\/div>\n
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Apparent power is a measure of alternating current (AC) power.\u00a0 <\/strong><\/span>Apparent power <\/strong><\/span>(S)<\/span>\u00b2\u00a0<\/span>= <\/span><\/strong>Active Power<\/strong>\u00a0(P)<\/span>\u00b2 + <\/span><\/strong>Reactive Power <\/strong>(Q<\/span>)<\/span>\u00b2<\/span><\/strong><\/h4>\n<\/div>\n
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Active Power (P)<\/strong><\/span><\/h4>\n<\/div>\n
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W<\/span><\/strong><\/h4>\n<\/div>\n
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Also called real power, or true power. Active power actual consumed power. Electricity bill is metered in real power consumption of a facility.<\/strong><\/span><\/h4>\n<\/div>\n
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Reactive Power (Q)<\/strong><\/span><\/h4>\n<\/div>\n
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Var<\/span><\/strong><\/h4>\n<\/div>\n
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Also called phantom\u00a0power. The inductive or capacitive loads which bring phantom power increase power stations’ burden to generate electricity in vain.<\/strong><\/span><\/h4>\n<\/div>\n
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Power Factor (PF)<\/strong><\/span><\/h4>\n<\/div>\n
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%<\/strong><\/span><\/h4>\n<\/div>\n
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Power Factor is defined as the ratio of <\/strong>reactive <\/strong>power to apparent power. PF = <\/strong>Active Power (P)\u00a0<\/strong>\/ <\/strong>Aapparent Power (S).<\/strong><\/span><\/h4>\n<\/div>\n
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Power Factor Correction (PFC)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/span><\/h4>\n<\/div>\n
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The power factor correction is designed to bring PF to near 1. There are two types of PFC, one is passive PFC, the other one is active PFC.<\/span><\/strong><\/h4>\n<\/div>\n
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Rated Power<\/strong><\/span><\/h4>\n<\/div>\n
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W<\/span><\/strong><\/h4>\n<\/div>\n
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The maximum power output available from PSU. Watts (W) = Voltage (V) * Current\u00a0 (A).<\/strong><\/span><\/h4>\n<\/div>\n
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Output Voltage<\/span><\/strong><\/h4>\n<\/div>\n
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V<\/strong><\/span><\/h4>\n<\/div>\n
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The voltage output <\/span><\/strong>available from PSU<\/strong>. <\/span><\/strong>Voltage (V) = <\/strong>Watts (W)<\/strong> \/ <\/span><\/strong>Current (A)<\/strong>.<\/strong><\/h4>\n<\/div>\n
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Output\u00a0 Current<\/span><\/strong><\/h4>\n<\/div>\n
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A<\/span><\/strong><\/h4>\n<\/div>\n
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The current output <\/strong>available from PSU<\/strong>. <\/strong>Current (A)<\/strong>\u00a0= <\/strong>Watts (W)<\/strong> \/ <\/strong>Voltage (V)<\/strong>.<\/strong><\/h4>\n<\/div>\n
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Efficiency (EFF)<\/strong><\/span><\/h4>\n<\/div>\n
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%<\/strong><\/span><\/h4>\n<\/div>\n
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Efficiency (EFF)<\/strong>\u00a0is defined as the ratio of <\/strong>input <\/strong>power to output power. Maximum EFF is up to 100%.<\/strong><\/h4>\n<\/div>\n
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(2) Functions<\/strong><\/span><\/h3>\n<\/div>\n
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Phrases<\/strong><\/span><\/h4>\n<\/div>\n
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Unit<\/strong><\/span><\/h4>\n<\/div>\n
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Explanation<\/strong><\/span><\/h4>\n<\/div>\n
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Derating Curve<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/span><\/h4>\n<\/div>\n
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The derating curve is drawn from output power of PSU according to environmental temperature changing.<\/strong><\/span><\/h4>\n<\/div>\n
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Hold Up Time\u00a0<\/span><\/strong><\/h4>\n<\/div>\n
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ms<\/strong><\/span><\/h4>\n<\/div>\n
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The time which PSUs can maintain power output in the event of main power failure.<\/strong><\/span><\/h4>\n<\/div>\n
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Constant Voltage (CV)<\/b><\/span><\/h4>\n<\/div>\n
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V<\/strong><\/h4>\n<\/div>\n
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The PSUs can provide constant voltage regardless of change in load. Suitable for normal load.<\/strong><\/span><\/h4>\n<\/div>\n
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Constant Current (CC)<\/b><\/span><\/h4>\n<\/div>\n
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A<\/strong><\/h4>\n<\/div>\n
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The PSUs can provide constant current regardless of change in load.\u00a0\u00a0Suitable for chargers, LEDs , or serial load.<\/span><\/strong><\/h4>\n<\/div>\n
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No-load Power Consumption<\/strong><\/span><\/h4>\n<\/div>\n
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W<\/strong><\/h4>\n<\/div>\n
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No-load power consumption is the electric power only consumed by PSU.<\/span><\/strong><\/h4>\n<\/div>\n
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Peak <\/b>Power<\/b><\/span><\/h4>\n<\/div>\n
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W<\/strong><\/h4>\n<\/div>\n
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The PSUs can provide high peak power out of rated power in short period.<\/strong><\/h4>\n<\/div>\n
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Power Density <\/b><\/span><\/h4>\n<\/div>\n
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W\/in3<\/sup><\/strong><\/h4>\n<\/div>\n
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Power density is the amount of power output of PSU per unit volume.<\/strong><\/span><\/h4>\n<\/div>\n
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Redundancy Design<\/b><\/span><\/h4>\n<\/div>\n
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—<\/h4>\n<\/div>\n
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The redundancy PSU can work with other redundancy PSUs to improve power output stability.<\/strong><\/span><\/h4>\n<\/div>\n
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Common Redundant\u00a0Power Supply (CRPS)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/h4>\n<\/div>\n
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CRPS is the Intel’s standard for redundant power supply.<\/strong><\/span><\/h4>\n<\/div>\n
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Digital <\/b>Power Supply<\/b><\/span><\/h4>\n<\/div>\n
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—<\/h4>\n<\/div>\n
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The digital PSUs are built-in MCU and DSP.<\/strong><\/span><\/h4>\n<\/div>\n
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PMBus<\/b><\/span><\/h4>\n<\/div>\n
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—<\/h4>\n<\/div>\n
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This standard is for digital PSU to communicate the system.<\/strong><\/span><\/h4>\n<\/div>\n
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(3) Safety
<\/strong><\/span><\/h3>\n<\/div>\n
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Phrases<\/strong><\/span><\/h4>\n<\/div>\n
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Unit<\/strong><\/span><\/h4>\n<\/div>\n
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Explanation<\/strong><\/span><\/h4>\n<\/div>\n
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Surge Suppression<\/strong><\/span><\/h4>\n<\/div>\n
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V<\/strong><\/h4>\n<\/div>\n
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Surge Suppression<\/strong> is designed to protect electrical devices from voltage spikes.<\/strong><\/span><\/h4>\n<\/div>\n
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Inrush Current<\/strong><\/span><\/h4>\n<\/div>\n
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A<\/strong><\/h4>\n<\/div>\n
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Inrush current is the instantaneous high input current drawn by a power supply at turn-on. <\/strong><\/span><\/h4>\n<\/div>\n
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Over Current Limit<\/strong><\/span><\/h4>\n<\/div>\n
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A<\/strong><\/h4>\n<\/div>\n
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The PSUs limit maximum current to protect the system.<\/strong><\/span><\/h4>\n<\/div>\n
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Over Power Protection (OPP)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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The PSUs shut down power to protect the system when load is over limit.<\/strong><\/span><\/h4>\n<\/div>\n
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Over Current Protection (OCP)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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The PSUs shut down power to protect the system when current is over limit.<\/strong><\/span><\/h4>\n<\/div>\n
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Over Voltage Protection (OVP)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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The PSUs shut down power to protect the system when voltage from main power is over limit.<\/strong><\/span><\/h4>\n<\/div>\n
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Short Circuit Protection (SCP)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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The PSUs shut down power to protect the system in case of short circuit.<\/strong><\/span><\/h4>\n<\/div>\n
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Over Temperature Protection (OTP)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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The PSUs shut down power to protect the system when environmental temperature exceed limit.<\/strong><\/span><\/h4>\n<\/div>\n
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Mean Time Between Failure (MTBF)<\/strong><\/span><\/h4>\n<\/div>\n
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Hours<\/strong><\/h4>\n<\/div>\n
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Mean time between failure (MTBF) refers to the average amount of operation time before PSUs fail.<\/strong><\/span><\/h4>\n<\/div>\n
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(4) Certification<\/strong><\/span><\/h3>\n<\/div>\n
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Phrases<\/strong><\/span><\/h4>\n<\/div>\n
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Unit<\/strong><\/span><\/h4>\n<\/div>\n
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Explanation<\/strong><\/span><\/h4>\n<\/div>\n
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Operating Temperature<\/strong><\/span><\/h4>\n<\/div>\n
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\u00b0C<\/strong><\/span><\/h4>\n<\/div>\n
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The PSUs can operate normally in the ambient temperature range.<\/strong><\/span><\/h4>\n<\/div>\n
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Storage Temperature<\/strong><\/span><\/h4>\n<\/div>\n
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\u00b0C<\/strong><\/span><\/h4>\n<\/div>\n
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The PSUs can store in the ambient temperature range.<\/strong><\/span><\/h4>\n<\/div>\n
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Operating Humidity<\/strong><\/span><\/h4>\n<\/div>\n
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%RH<\/strong><\/span><\/h4>\n<\/div>\n
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The PSUs can operate normally in the ambient humidity range.<\/strong><\/span><\/h4>\n<\/div>\n
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Storage Humidity<\/strong><\/h4>\n<\/div>\n
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%RH<\/strong><\/span><\/h4>\n<\/div>\n
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The PSUs can store in the ambient humidity range.<\/strong><\/span><\/h4>\n<\/div>\n
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Operating Altitude<\/strong><\/span><\/h4>\n<\/div>\n
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m<\/strong><\/span><\/h4>\n<\/div>\n
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The PSUs can operate normally in the ambient altitude range.<\/strong><\/h4>\n<\/div>\n
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Electromagnetic Interference (EMI)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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Electronic devices generate EM fields which interfere with other electronic devices.<\/strong><\/span><\/h4>\n<\/div>\n
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Electromagnetic Susceptibility (EMS)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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The ability of a device resists EM fields which is generated<\/strong><\/span> by<\/strong>\u00a0other devices.<\/strong><\/h4>\n<\/div>\n
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Electromagnetic Compatibility (EMC)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/h4>\n<\/div>\n
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Electromagnetic Compatibility (EMC) refers to <\/strong>Electromagnetic Interference (EMI) and <\/strong>Electromagnetic Compatibility (EMC).<\/strong><\/h4>\n<\/div>\n
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80Plus<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/span><\/h4>\n<\/div>\n
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80Plus is an efficiency certification for PSUs. There are six levels namely Base, Bronze, Silver, Gold, Platinum, and Titanium.<\/strong><\/span><\/h4>\n<\/div>\n
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Energy Star<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/strong><\/span><\/h4>\n<\/div>\n
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Energy Star is an American efficiency certification for appliances, electronics, etc.<\/strong><\/span><\/h4>\n<\/div>\n
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Ingress Protection (IPXX)<\/strong><\/span><\/h4>\n<\/div>\n
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—<\/h4>\n<\/div>\n
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Ingress Protection ratings are defined levels of sealing effectiveness of electrical enclosures against intrusion from foreign dirt and water.<\/strong><\/span><\/h4>\n<\/div>\n
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IEC 62368<\/b><\/span><\/h4>\n<\/div>\n
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—<\/h4>\n<\/div>\n
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IEC 62368 is a new safety standard for ICT and AV equipment compiled by the IEC technical committee.<\/strong><\/span><\/h4>\n<\/div>\n
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EN 62368<\/b><\/span><\/h4>\n<\/div>\n
\n

—<\/h4>\n<\/div>\n
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EN 62368 is a new safety standard <\/strong>compiled by <\/strong>Technical Inspection Association (TUV) in Germany, available for Europe.<\/strong><\/span><\/h4>\n<\/div>\n
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UL 62368<\/b><\/span><\/h4>\n<\/div>\n
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—<\/h4>\n<\/div>\n
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UL 62368 is a new safety standard <\/strong><\/span>compiled by <\/strong>Underwriters Laboratories Inc. (UL) in USA, available for North America.<\/strong><\/span><\/h4>\n<\/div>\n


\n<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30db\u30fc\u30e0 \/ \u3088\u304f\u3042\u308b\u8cea\u554f \/ \u96fb\u6e90\u7528\u8a9e \u96fb\u6e90\u7528\u8a9e Common glossaries for power supply units (1) Power \/ Voltage \/ Current \/ Power \/ Effi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/pages\/10250"}],"collection":[{"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/comments?post=10250"}],"version-history":[{"count":4,"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/pages\/10250\/revisions"}],"predecessor-version":[{"id":11188,"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/pages\/10250\/revisions\/11188"}],"wp:attachment":[{"href":"https:\/\/www.tigerpower.com\/ja\/wp-json\/wp\/v2\/media?parent=10250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}