n
Ratings and Characteristics
l Operating Temperature Range: Ð25 to 70 ûC
l Storage Temperature Range: Ð40 to 85 ûC
Part No.
ERZA20GS852H
ERZA20GS173H
Characteristics
Connection
AC 3.3 kV
AC 6.6 kV
Line-Ground
Line-Ground
Varistor Voltage (V
1 mA
)
8.50
kV
17.0
kV
Maximum Clamping Voltage
12.75 kV
25.5 kV
@ 100 A (8/20 µs)
Maximum Peak Current
5000 A
5000 A
(8/20 µs, 2 times)
Maximum Allowable Voltage
AC 3.95 kV
AC 6.9 kV
Impulse Life
20 A
20 A
(2 ms, 10
4
times)
Maximum Allowable Energy
1300 J
2600 J
+0.75
Ð 0.50
+1.5
Ð1.0
ÒZNR
â
Ó Transient/Surge Absorbers (Type G)
High energy transient overvoltages, generated by
switching on/off of a vacuum relay in power distribution
line, can cause insulation breakdown of high voltage
electronic equipment/devices and powercables 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.
n
Recommended Applications
l Protection of high voltage motors, transformers or
rectifiers from switching surges
l Switching surge absorption in vacuum circuit
interrupters
l 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.
ÒZNR
â
Ó Transient/Surge Absorbers
Type:
G n
Dimensions in mm (not to scale)
ERZA20GS852H
n
Ratings and Characteristics
l Operating Temperature Range : Ð20 to 70 ûC
l Storage Temperature Range : Ð40 to 85 ûC
Characteristics
ERZA48GK502
Connection
Across the
Anti-corrosion layers
Varistor Voltage
5.0 kV±0.5 kV
Clamping Voltage
14 kV at V23 kA
Maximum Peak Current
21 kA 100 times
ERZA48GK502
n
Dimensions in mm (not to scale)
ÒZNR
â
Ó Transient/Surge Absorbers (Type G)
±
±
ERZA20GS173H
(V
1 mA
)
(8/20 µs)
(8/20 µs)