Surge protective device module (SPD-M) is an onboard lightning protection module that integrates functions, such as thermal protection, overvoltage protection, and remote signaling, and others. A single module can meet common-mode, differential-mode or full-mode protection requirements.SPD-M, an integrated solution, can simplify the design and selection of surge protection modules for users, and is suitable for surge protection of low-voltage AC or DC power supply equipment. Surge protective device module (SPD-M) has the characteristics of small board space, high level of integration, and complete protection functions and solutions.
8/20 Current Impulse
Current impulse with a nominal virtual front time of 8 µs and a nominal time to half-value of 20 µs. ---- IEC 61643-11
1.2/50 Voltage Impulse
Voltage impulse with a nominal virtual front time of 1.2 µs and a nominal time to half-value of 50 µs. ---- IEC 61643-11
Maximum Continuous Operating Voltage
Maximum r.m.s. voltage, which may be continuously applied to the SPD's mode of protection. ---- IEC 61643-11
Nominal Discharge Current
Crest value of the current through the SPD having a current waveshape of 8/20 µs. ---- IEC 61643-11
Impulse Discharge Current for Class I Test
Crest value of a discharge current through the SPD with specified charge transfer Q and specified energy W/R in the specified time.
---- IEC 61643-11
Maximum Discharge Current
Crest value of a current through the SPD having an 8/20 µs waveshape and magnitude according to the manufacturers specification. Imax is equal to or greater than In. ---- IEC 61643-11
Modes of protection
An intended current path, between terminals that contains protective components, e.g. line-to-line, line-to-earth, line-to-neutral, neutral-to-earth. ---- IEC 61643-11
Voltage Protection Level
Maximum voltage to be expected at the SPD terminals due to an impulse stress with defined voltage steepness and an impulse stress with a discharge current with given amplitude and wave shape. ---- IEC 61643-11
Short Circuit Current Rating
The suitability of an SPD for use on an AC power circuit that is capable of delivering not more than a declared rms symmetrical current at a declared voltage during a short circuit condition. ----UL 1449
A non-resettable device incorporating a THERMAL ELEMENT which will open a circuit once only when exposed for a sufficient length of time to a temperature in excess of that for which it has been designed. ----IEC 60691
Alloy Type Thermal-Link, Alloy is the thermal element.
● Telecom Equipment
● AC / DC Power Supply
● Uninterruptable Power Supply (UPS)
● Surge Protective Device (SPD)
● Embedded power supply
● Telecom Power Supply
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