21kV,5kA Polymer Lightning Arrester/surge Arrester

Single Phase Silicon Rubber Lightning and Power Surge Arrester for Electrical Equipment Specifications:   Composite Surge Arresters can be applied to a variety of systems including substation equipment, AC-DC converters, railway power system and power distribution units ranging from 0.25kV to 765kV systems. These surge arresters demonstrate excellent protection properties. Metal oxide type surge arresters offer such special features inherent in the gap-less structure, such as a quick response to surge voltage, high energy dissipation capability, safe operation, compactness / lightweight and freedom from pollution. Type YH5W5-21/56 Rated voltage---------kV 21 MOCV ----------------kV 16 Nominal Current-------kV 5 Residual voltage of steep impulse----at 5kA(kV) 60.5 8/20µS Residual voltage of lightning impulse current kV(Peak value)-----at 5kA(kV) 56 Residual voltage of switching impulse current kV (peak value)----at 1kA (kV) 46 1mA D.C reference voltage (kV) 29.7 Line discharge level 1 2mS long duration impulse current A 200 4/10µS High current impulse kA 65 Lightning impulse withstand kV 125 Power frequency voltage withstand(dry/wet)kV 43 0.1S TOV--------------kV 25.2 1S TOV----------------kV 24.15 10S TOV---------------kV 23.1 1200S TOV-------------kV 21 Creepage distance ----mm 670 Material employed in series non-linear resistor Zinc Oxide Competitive Advantage: 1. Compact and Lightweight 2. Extremely Safe Pressure Relief Performance 3. Superior Performance against Environmental Contamination 4. Directly Molded Structure 5. Compliance with International Standards(IEC60099-4) 6. Simple Support Structure 7. Manufactured at Advanced ISO-9001 certified facilities Other: Yongde holds the quality policy of being 'the technical forerunner, supreme in quality, supremacy of customers, and innovative progressing', so that our products and services successfully satisfied our users. We warmly welcome friends and customers from home and abroad to contact for exchanges and corporations. We also welcome feedbacks from our user communities.