AWA0000CE7

“ZNR” Transient/Surge Absorbers (Type G)
“ZNR” Transient/Surge Absorbers
Type : G
High energy transient over voltages generated by switching on/off of a vacuum relay in power distribution line
can cause insulation breakdown of high voltage electronic equipment/devices and power cables 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.
● RoHS
compliant
Recommended Applications
● Protection of high voltage motors, transformers or rectifiers from switching surges
● Switching surge absorption in vacuum circuit interrupters
● 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.
■ As for Minimum Quantity / Packing Unit
Please see Related Information
Ratings and Characteristics
●
●
Operating Temperature Range : –25 to 70 °C
Storage Temperature Range : –40 to 85 °C
Part No.
Characteristics
Connection
Varistor Voltage (V1 mA)
Maximum Clamping Voltage
@ 100 A (8/20 µs)
Maximum Peak Current
(8/20 µs, 2 times)
Maximum Allowable Voltage
Impulse Life
(2 ms, 104 times)
Maximum Allowable Energy
ERZA20GS852H
ERZA20GS173H
AC 3.3 kV
Line-Ground
AC 6.6 kV
Line-Ground
−0.50 kV
8.50+0.75
17.0−1.0 kV
12.75 kV
25.5 kV
5000 A
5000 A
AC 3.45 kV
AC 6.9 kV
20 A
20 A
1300 J
2600 J
+1.5
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
02
Jan. 2015
“ZNR” Transient/Surge Absorbers (Type G)
Dimensions in mm (not to scale)
ERZA20GS173H
M10 Terminal
5.5 mm2 Terminal
M10 Terminal
5.5 mm2 Terminal
N.P
80
28
10
16
Mounting pitch
20.0±0.5
Mounting hole
2-f 8.5
22
200
22
28
160
105
Mounting hole
2-f 8.5
145
ERZA20GS852H
N.P
16
10
Mounting pitch
20.0±0.5
100
f 54
f 54
Ratings and Characteristics
●
●
Operating Temperature Range : –25 to 70 °C
Storage Temperature Range : –40 to 85 °C
Characteristics
ERZA48GK502
Across the
Anti-corrosion layers
Connection
Varistor Voltage
(V1 mA)
5.0 kV±0.5 kV
Clamping Voltage
(8/20 µs)
14 kV at V23 kA
Maximum Peak Current (8/20 µs)
21 kA 100 times
Dimensions in mm (not to scale)
ERZA48GK502
15
85
15
22
32
f 14
2
33
49
33
f 70
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
02
Jan. 2015
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