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AS Series
Data Sheet January 1998 File Number 2492.4
High Energy Metal-Oxide Arrester Blocks
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.)
Features
* 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
[ /Title (AS Series) /Subject (High Energy MetalOxide Arreste r Blocks ) /Autho r () /Keywords (TVS, Transient Suppression, Protection, Arreste r, Lightning Protection,
Applications
* Lightning Protection of Electrical AC Distribution Transformers and Systems * Arrester Assemblies of the Porcelain Polymeric, "Under-oil" and Metal Clad Variety
ed nd me s- om c ign e s as tR De sH w No e Ne ed eri t or tS inu F c en nt du em co o is Pr lac n D Rep e Be No ith W
Packaging
AS SERIES
OBSOLETE PART
8-3
1-800-999-9445 or 1-847-824-1188 | Copyright
(c) Littelfuse, Inc. 1998
AS Series
Absolute Maximum Ratings
Rated Voltage AC Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steady State Applied Voltage AC Voltage (MCOV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transient Peak Pulse Current (ITM) for 4/10 s Current Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Energy Rating for 2ms Current Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
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
65 to 100 2.2 to 12 60
kA kJ
oC
Device Ratings and Specifications
PARAMETER V302AS32 3.0
25oC Unless Otherwise Specified PART NUMBER
Rated Voltage (RMS)
Maximum Continuous Operating Voltage (MCOV) Reference Current, IREF Minimum Reference Voltage, VREF Nominal Discharge Current, IP (8/20s)
Residual Voltage (Max) at IP Energy Rating at 60oC (2ms)
Peak Current, 4/10s at 60oC (Note 4)
Maximum Steep Current Residual Voltage at 5kA (1/20s)
OBSOLETE PART
4.0 5.0 6.0 3.0 4.0 5.0 4.0 2.55 5.0 3.40 5.0 4.25 5.0 5.1 2.55 5.0 3.40 5.0 4.25 5.0 3.40 5.0 5.0 3.12 5.0 9.8 4.16 5.0 5.20 5.0 6.24 5.0 3.12 4.16 5.20 4.16 10.0 10.0 10.0 10.0 13.1 2.9 16.3 3.6 19.6 4.3 10.0 3.5 13.3 4.7 16.7 5.8 12.5 2.2 12.0 65.0 11.3 65.0 15.0 65.0 18.8 65.0 22.5 100.0 100.0 100.0 11.5 15.3 19.2 14.4 0.23 75.0 0.30 75.0 0.38 75.0 0.45 75.0 0.36 110.0 0.48 110.0 0.60 110.0 0.50
V402AS32
V502AS32
V602AS32
V302AS42
V402AS42
V502AS42
V402AS60
UNITS kV kV mA kVRMS kA kV kJ kA kV
100.0
Maximum Steep Current Residual Voltage at 10kA (1/20s) Maximum Dissipation Power at MCOV Maximum Conduction Current at MCOV NOTES:
kV
W A
140.0
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
1.3 1.25 1.2 1.15 1.1 1.05 1 0.1 PEAK RESIDUAL VOLTAGE (kV) 35 30 25 20 15 10 5 0 0.001 V602AS32 V502AS32 V402AS32 V302AS32
PER UNIT OF RATED VOLTAGE
1
10 TIME (s)
100
1000
10000
0.01
1000 100 1 10 0.1 PEAK IMPULSE CURRENT (A)
10,000 100,000
FIGURE 1. TEMPORARY OVERVOLTAGE CAPABILITY (TOV) FOR AS SERIES ARRESTERS
FIGURE 2. V-I CHARACTERISTIC AS32 SIZE
30 PEAK RESIDUAL VOLTAGE (kV) 25 20 15 10 5 PEAK RESIDUAL VOLTAGE (kV)
20
0 0.001
0.01
FIGURE 3. V-I CHARACTERISTIC AS42 SIZE
OBSOLETE PART
V502AS42 V402AS42 V302AS42 10 V402AS60 5 100 1000 1 10 0.1 PEAK IMPULSE CURRENT (A) 10,000 100,000 0 0.001 0.01
15
1000 100 1 10 0.1 PEAK IMPULSE CURRENT (A)
10,000 100,000
FIGURE 4. V-I CHARACTERISTIC AS60 SIZE
8-5
AS Series Dimensions
PASSIVATION COLLAR TYPICAL THICKNESS = 0.07mm ELECTRODE OF SPRAYED ALUMINUM PARTICLES FACE CAMBER = 0.15mm MAX
D
ELECTRODE = 0.10mm TYPICAL H
PARAMETER Diameter (D) Min Max Height (H) Min Max
Ordering Information
OBSOLETE PART
DIMENSIONS (IN MILLIMETERS) PART NUMBER V302AS32 V402AS32 V502AS32 V602AS32 V302AS42 V402AS42 V502AS42 32.3 32.3 32.3 32.3 40.9 40.9 40.9 33.7 33.7 33.7 33.7 42.3 42.3 42.3 20.0 27.0 34.0 41.0 20.0 27.0 34.3 21.5 28.5 35.5 42.5 21.5 28.5 35.8 VXXX ASXX TYPES AS SERIES
V402AS60
UNITS
60.0
mm mm
62.0
35.3
mm mm
36.8
V
30
2
AS
60
VARISTOR TECHNOLOGY MCOV BASE VALUE
DIAMETER SIZE (mm)
ARRESTER SERIES
MCOV DECADE MULTIPLIER
8-6

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