“ZNR” Transient/Surge Absorbers (Type G) “ZNR” Transient/Surge Absorbers Type : G High energy transient over voltages generated by switching on/off of a vacuum relay in power distribution line can cause insulation breakdown of high voltage electronic equipment/devices and power cables etc... The ZNR Type F and G are gapless type arresters using sintered bodies of zinc-oxide and are characterized by the excellent characteristics of high energy handling capability, fast response time and low clamp ratio etc... The ZNR and G have wide applications for protection of high-voltage motors, tranformers, rectifiers and anticorrosion layers of powercables from high energy transient overvoltages/surges. ● RoHS compliant Recommended Applications ● Protection of high voltage motors, transformers or rectifiers from switching surges ● Switching surge absorption in vacuum circuit interrupters ● Protection of anti-corrosion layer of under ground electric power cable from induced lightning or switching surges Note : Ask our factory for Product Specification before use. ■ As for Minimum Quantity / Packing Unit Please see Related Information Ratings and Characteristics ● ● Operating Temperature Range : –25 to 70 °C Storage Temperature Range : –40 to 85 °C Part No. Characteristics Connection Varistor Voltage (V1 mA) Maximum Clamping Voltage @ 100 A (8/20 µs) Maximum Peak Current (8/20 µs, 2 times) Maximum Allowable Voltage Impulse Life (2 ms, 104 times) Maximum Allowable Energy ERZA20GS852H ERZA20GS173H AC 3.3 kV Line-Ground AC 6.6 kV Line-Ground −0.50 kV 8.50+0.75 17.0−1.0 kV 12.75 kV 25.5 kV 5000 A 5000 A AC 3.45 kV AC 6.9 kV 20 A 20 A 1300 J 2600 J +1.5 Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 02 Jan. 2015 “ZNR” Transient/Surge Absorbers (Type G) Dimensions in mm (not to scale) ERZA20GS173H M10 Terminal 5.5 mm2 Terminal M10 Terminal 5.5 mm2 Terminal N.P 80 28 10 16 Mounting pitch 20.0±0.5 Mounting hole 2-f 8.5 22 200 22 28 160 105 Mounting hole 2-f 8.5 145 ERZA20GS852H N.P 16 10 Mounting pitch 20.0±0.5 100 f 54 f 54 Ratings and Characteristics ● ● Operating Temperature Range : –25 to 70 °C Storage Temperature Range : –40 to 85 °C Characteristics ERZA48GK502 Across the Anti-corrosion layers Connection Varistor Voltage (V1 mA) 5.0 kV±0.5 kV Clamping Voltage (8/20 µs) 14 kV at V23 kA Maximum Peak Current (8/20 µs) 21 kA 100 times Dimensions in mm (not to scale) ERZA48GK502 15 85 15 22 32 f 14 2 33 49 33 f 70 Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 02 Jan. 2015