SPD9 Surge protective Device (surge arrester)

The surge protective device (surge arrester), using metal oxide varistor, designed to protect both phase and neutral line

APPLICATION

Surge protective Device provides protection against surge current resulted from direct or indirect lightning strike or similar surge voltage. SPD is applicable to circuit with rated voltage up to 400V~, rated frequency 50/60Hz.The product, using metal oxide varistor, designed to protect both phase and neutral line, is of high electricity resistance under normal operations. In case of surge current or voltage caused by lightning strike or similar, SPD functions quickly to conduct the surge voltage/current to earth and thus effectively prevent  the downstream equipments of its protected line from destruction. SPD resumes its high electricity resistance  to secure normal  operation of the protected power network without presence of the surge  voltage.

CONSTRUCTION AND FEATURE

Plug-in type function unit makes easy replacementOn-off indicating windowQuick response less than 25ms.

 TECHNICAL DATAPole  No.: 1234Frequency: 50/60HzPillar terminal with clampOn-Off indicating window:Green: normal functionRed: functionless, immediate  replacement requiredConnection capacity:  rigid conductor 25mm2

Standards:  IEC61643-1

Category	SPD9-A	SPD9-B	SPD9-C	SPD9-D	SPD9-E
Rated voltage Un	220	220	220	380	380
Max. continuous operating voltage Uc (V)	320	320	320	420	460
Voltage protection level Up (KV)	1	1.2	1.5	2.0	2.3
Nominal discharge current In (8/20μs)	5	10	20	30	40
Rated varistor voltage (v)	510±10%	510±10%	510±10%	510±10%	510±10%
Max. discharge current (8/20μs) (Imax)	10KA	20KA	40KA	60KA	70KA
Response time (ms)	25
Power withstand (J)(2ms)	300	390	640	1500	1580
Ambient temperature	-24+80
Function unit color	Deep yellow	Light yellow	Light grey	Brown	Red
Min. Terminal connection (mm2)	Neutral 2.5 ,earth 4

SPD9 Surge protective Device (surge arrester)