AS Series Data Sheet [ /Title (AS Series) /Subject (High Energy MetalOxide Arreste r Blocks ) /Autho r () /Keywords (TVS, Transient Suppression, Protection, Arreste r, Lightning Protection, January 1998 File Number 2492.4 High Energy Metal-Oxide Arrester Blocks Features The AS Series of Arrester blocks is primarily designed to be used as the surge suppression element within a lightning arrester assembly. These arrester blocks provide the high peak surge current and energy ratings required for the protection of high voltage AC power utility distribution systems. Typically, these devices are placed within a special arrester housing provided by the customer, and stacked to achieve the necessary continuous working voltage ratings for the specific application. (See the CA or NA series of Varistor discs for lower voltage and energy applications.) • Provided in Disc Form for Unique Packaging by Customer • Electrode Finish Enables Pressure Contact for Stacking Application • Available Disc Sizes: 32mm, 42mm and 60mm Diameter • No Follow Current • High Surge Current Capability • Conforms to IEC 99-4 and ANSI/IEEE C62.11 Industry Standards • Characterized for Lightning Arrester Parameters Applications • Lightning Protection of Electrical AC Distribution Transformers and Systems d de n e – mm ns o g c i e s s tR Ha De s w No e d rie rN ue Se t o n t i F en nt uc m o d e c o c Pr Dis epla n e R Be No h t Wi • Arrester Assemblies of the Porcelain Polymeric, “Under-oil” and Metal Clad Variety Packaging AS SERIES OBSOLETE PART 8-3 1-800-999-9445 or 1-847-824-1188 | Copyright © Littelfuse, Inc. 1998 AS Series Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart AS SERIES UNITS 3.00 to 6.00 kV 2.55 to 5.10 kV Peak Pulse Current (ITM) for 4/10 µs Current Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to 100 kA Energy Rating for 2ms Current Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 to 12 kJ 60 oC Rated Voltage AC Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steady State Applied Voltage AC Voltage (MCOV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transient Operating Ambient Temperature (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . STORAGE AND HANDLING NOTES: 1. Arrester blocks should be stored in a moisture free environment at all times. 2. Use caution during handling to prevent damage or chipping of edges of the arrester blocks. CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Device Ratings and Specifications 25oC Unless Otherwise Specified PART NUMBER PARAMETER V302AS32 V402AS32 V502AS32 V602AS32 V302AS42 V402AS42 V502AS42 V402AS60 UNITS Rated Voltage (RMS) 3.0 4.0 5.0 6.0 3.0 4.0 5.0 4.0 kV Maximum Continuous Operating Voltage (MCOV) 2.55 3.40 4.25 5.1 2.55 3.40 4.25 3.40 kV Reference Current, IREF 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 mA Minimum Reference Voltage, VREF 3.12 4.16 5.20 6.24 3.12 4.16 5.20 4.16 kVRMS Nominal Discharge Current, IP (8/20µs) 5.0 5.0 5.0 5.0 10.0 10.0 10.0 10.0 kA Residual Voltage (Max) at IP 9.8 13.1 16.3 19.6 10.0 13.3 16.7 12.5 kV Energy Rating at 60oC (2ms) 2.2 2.9 3.6 4.3 3.5 4.7 5.8 12.0 kJ Peak Current, 4/10µs at 60oC (Note 4) 65.0 65.0 65.0 65.0 100.0 100.0 100.0 100.0 kA Maximum Steep Current Residual Voltage at 5kA (1/20µs) 11.3 15.0 18.8 22.5 - - - - kV Maximum Steep Current Residual Voltage at 10kA (1/20µs) - - - - 11.5 15.3 19.2 14.4 kV Maximum Dissipation Power at MCOV 0.23 0.30 0.38 0.45 0.36 0.48 0.60 0.50 W Maximum Conduction Current at MCOV 75.0 75.0 75.0 75.0 110.0 110.0 110.0 140.0 µA OBSOLETE PART NOTES: 3. In addition to above standard types, custom ratings and dimensions can be provided. 4. Parts should be wrapped using a secondary insulating film or encased by polymeric housing. 8-4 AS Series Performance Curves 35 PEAK RESIDUAL VOLTAGE (kV) PER UNIT OF RATED VOLTAGE 1.3 1.25 1.2 1.15 1.1 1.05 1 0.1 1 10 100 1000 30 25 15 10 5 0 0.001 10000 V602AS32 V502AS32 V402AS32 V302AS32 20 0.01 TIME (s) FIGURE 1. TEMPORARY OVERVOLTAGE CAPABILITY (TOV) FOR AS SERIES ARRESTERS PEAK RESIDUAL VOLTAGE (kV) PEAK RESIDUAL VOLTAGE (kV) 20 25 15 10 5 0 0.001 10,000 100,000 FIGURE 2. V-I CHARACTERISTIC AS32 SIZE 30 20 1000 100 1 10 0.1 PEAK IMPULSE CURRENT (A) 15 OBSOLETE PART V502AS42 V402AS42 V302AS42 0.01 100 1000 1 10 0.1 PEAK IMPULSE CURRENT (A) 10,000 100,000 FIGURE 3. V-I CHARACTERISTIC AS42 SIZE 8-5 10 V402AS60 5 0 0.001 0.01 1000 100 1 10 0.1 PEAK IMPULSE CURRENT (A) 10,000 100,000 FIGURE 4. V-I CHARACTERISTIC AS60 SIZE AS Series Dimensions PASSIVATION COLLAR TYPICAL THICKNESS = 0.07mm ELECTRODE OF SPRAYED ALUMINUM PARTICLES FACE CAMBER = 0.15mm MAX ELECTRODE = 0.10mm TYPICAL ∅D H OBSOLETE PART DIMENSIONS (IN MILLIMETERS) PART NUMBER PARAMETER Diameter (∅D) Min Max Height (H) Min Max V302AS32 V402AS32 V502AS32 V602AS32 V302AS42 V402AS42 V502AS42 V402AS60 UNITS 32.3 32.3 32.3 32.3 40.9 40.9 40.9 60.0 mm 33.7 33.7 33.7 33.7 42.3 42.3 42.3 62.0 mm 20.0 27.0 34.0 41.0 20.0 27.0 34.3 35.3 mm 21.5 28.5 35.5 42.5 21.5 28.5 35.8 36.8 mm Ordering Information VXXX ASXX TYPES AS SERIES V 30 2 AS 60 VARISTOR TECHNOLOGY DIAMETER SIZE (mm) MCOV BASE VALUE ARRESTER SERIES MCOV DECADE MULTIPLIER 8-6