WRDZ Ligntning Protectort Surge Varistor For SPD

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WRDZ Ligntning Protectort Surge Varistor For SPD
Surge Varistor, SPD
SPD, Lightning Protector
Silver bare chip
Size φ33.4*33.4
Packing size φ34*34
MOV(metal oxide varistors)
WRDZ lightning arrester surge varistor code annotation diagram
The main technical index
Model specification 34S511K  34S621K  34S751K 
Packing size 459~561 558~682 675~825
Maximum continuous operating voltage 320VAC 385VAC 460VAC
Dc leakage current ≤15μA
Nominal discharge current 20kA
Maximum discharge current 50 kA
limp 6.5 kA
Maximum limiting voltage  ≤1.6kV(at 20kA) ≤1.8kV (at 20kA)  ≤2.1kV (at 20kA) 
Electrode surface coating Silering
Thichness tmax(mm) 6.1mm 6.6mm 6.6mm
Storage conditions 1) Storage temperature:-10℃~+40℃  2) Relative humidity:<75%RH 3) This product can’t place in a bare place and can’t be stored in an environment exposed to corrosive gases or direct sunlight.
Operating temperature -40℃~+85℃
Sign Can laser marking on the surface of mov(packing material)
Production range and parameters
Type Varistor voltage V1mA V Tolerance range V1mA % Maximum allowable voltage Clamping voltage(Max.) Maximum Peak Current(8/20μs) Nominal Peak Current(8/20μs) Lightning impulse current (10/350μs)
U ac V U dc V U p  V I A Imax KA In KA Iimp KA
WRA34S471K-H 470 ±10 300 385 775 300 50 20 6.0
WRA34S511K-H 510 ±10 320 415 845 300 50 20 6.0
WRA34S561K-H 560 ±10 345 460 925 300 50 20 6.0
WRA34S621K-H 620 ±10 385 505 1025 300 50 20 6.0
WRA34S681K-H 680 ±10 420 560 1120 300 50 20 5.5
WRA34S711K-H 710 ±10 440 585 1180 300 50 20 5.5
WRA34S751K-H 750 ±10 460 615 1240 300 50 20 5.5
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