8-3
File Number
2492.4
1-800-999-9445 or 1-847-824-1188
|
Copyright
Littelfuse, Inc. 1998
AS Series
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
Applications
Lightning Protection of Electrical AC Distribution
Transformers and Systems
Arrester Assemblies of the Porcelain Polymeric,
"Under-oil" and Metal Clad Variety
Packaging
AS SERIES
Data Sheet
January 1998
[ /Title
(AS
Series)
/Sub-
ject
(High
Energy
Metal-
Oxide
Arreste
r
Blocks
)
/Autho
r ()
/Key-
words
(TVS,
Tran-
sient
Sup-
pres-
sion,
Protec-
tion,
Arreste
r,
Light-
ning
Protec-
tion,
Not R
ecom
mended
For N
ew
D
esigns
Pr
oduct S
eries H
as
Been D
iscontin
ued
W
ith N
o R
eplacem
ent
OBSOLETE
PART
8-4
Absolute Maximum Ratings
For ratings of individual members of a series, see Device Ratings and Specifications chart
AS SERIES
UNITS
Rated Voltage
AC Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.00 to 6.00
kV
Steady State Applied Voltage
AC Voltage (MCOV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.55 to 5.10
kV
Transient
Peak Pulse Current (I
TM
) for 4/10
s Current Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
65 to 100
kA
Energy Rating for 2ms Current Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 to 12
kJ
Operating Ambient Temperature (T
A
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60
o
C
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
25
o
C Unless Otherwise Specified
PARAMETER
PART NUMBER
UNITS
V302AS32
V402AS32
V502AS32
V602AS32
V302AS42
V402AS42
V502AS42
V402AS60
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, I
REF
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
mA
Minimum Reference
Voltage, V
REF
3.12
4.16
5.20
6.24
3.12
4.16
5.20
4.16
kV
RMS
Nominal Discharge
Current, I
P
(8/20
s)
5.0
5.0
5.0
5.0
10.0
10.0
10.0
10.0
kA
Residual Voltage (Max) at
I
P
9.8
13.1
16.3
19.6
10.0
13.3
16.7
12.5
kV
Energy Rating at 60
o
C
(2ms)
2.2
2.9
3.6
4.3
3.5
4.7
5.8
12.0
kJ
Peak Current, 4/10
s at
60
o
C (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
(1/20
s)
11.3
15.0
18.8
22.5
-
-
-
-
kV
Maximum Steep Current
Residual Voltage at 10kA
(1/20
s)
-
-
-
-
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
A
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.
AS Series
OBSOLETE
PART
8-5
Performance Curves
FIGURE 1. TEMPORARY OVERVOLTAGE CAPABILITY (TOV)
FOR AS SERIES ARRESTERS
FIGURE 2. V-I CHARACTERISTIC AS32 SIZE
FIGURE 3. V-I CHARACTERISTIC AS42 SIZE
FIGURE 4. V-I CHARACTERISTIC AS60 SIZE
TIME (s)
1.3
1.25
1.2
1.15
1.1
1.05
1
0.1
1
10
100
1000
10000
PER UNIT OF RA
TED
V
O
L
T
A
G
E
PEAK IMPULSE CURRENT (A)
35
1
0.01
10
0.001
1000
100,000
PEAK RESIDU
AL
V
O
L
T
A
GE (kV)
10,000
100
20
15
10
5
0
0.1
30
25
V602AS32
V502AS32
V402AS32
V302AS32
PEAK IMPULSE CURRENT (A)
1
0.01
10
0.001
1000
100,000
PEAK RESIDU
AL
V
O
L
T
A
GE (kV)
10,000
100
20
15
10
5
0
0.1
30
25
V502AS42
V402AS42
V302AS42
PEAK IMPULSE CURRENT (A)
20
1
0.01
10
0.001
1000
100,000
PEAK RESIDU
AL
V
O
L
T
A
GE (kV)
10,000
100
15
10
5
0
0.1
V402AS60
AS Series
OBSOLETE
PART
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