Structure & Principle

SPD has only one side terminal, able to prevent from electric touching, indoor fixedly mounted, limiting voltage.

SPD has built-in disconnector, when SPD is invalid due to overheating or breakdown, the disconnector can automatically separate SPD from the power grid, meanwhile output an indication signal. the visible window show white color in normal service, if to be separated from grid, it will show red color.

1P+N, 2P+N, 3P+N SPD consist of 1P, 2P, 3P SPD and NPE neutral and earthing protection modules, use in the power supply system of TT, TN-S, etc.

Installation

to be mounted between LPZ0B or LPZ1 zone and LPZ2 zone, adopts 35mm standard mounting rail. the cross sectional area of multi-strand soft copper conductor: 2.5~35mm 2

SPD must be set up for each pole use the surge protection for short circuit protection after SPD breakdown.

It is mounted in distribution box of different floors, computer center, telecommunication room, control room of elevator, CATV room, fire fighting center, etc.

Technical Parameter

Model/Specification SP1-40C Max continuous operating voltage Uc(VAC) 1000 750 420 385 320 275 175 48 Voltage protective level up(KV) ≤ 3.5 3.0 2.0 1.8 1.6 1.5 1.3 0.8 Max discharging current (8/20us) In(KA) 40 Nominal discharging current (8/20us) In(KA) 20 Resonse time (ns) <25 Protection class IP20 Indication of invalidation Green: normal; Red: invalidation Application Primary protection for incoming line Ambient air temperature -40 ℃ ~ +80 ℃

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