Gas Discharge Tubes Gas Discharge Tubes
Gas Discharge Tubes The smallest in the world Class I and Class II requirements High current capability
BE ON THE SAFE SIDE
Gas Discharge Tubes - GDT Gas discharge tubes (GDT) are used for overvoltage protection in low-voltage power distribution networks. GDTs are hermetically closed cells in which the gas mixture between two electrodes becomes ionized at some voltage rise and so enables some current flow. Construction of the cell is rather simple; no more than four or five pieces are joint into the compact body by pretentious manufacturing methods. There are important vacuum technique, noble gases, cleanness, degassity of materials and hermetic of the used joints. Gas arrester of high quality has to have demand characteristics: defined spark-over voltage, fast extinguish of arc current and good repeatability of properties in industrial production. Important properties are also high insulation resistance and fire safety.
New patented construction of GDT
Size comparison
Body*= electrode 1 Ordinary GDT Ceramic body BIG SIZE Iimp = 50 kA
V
ISKRA ZAŠCITE GDT
Ceramic insulator Pin*= electrode 2
Metal body SMALL SIZE Iimp = 50 kA
*All metal surfaces are nickel plated and suitable for soldering
Gas Discharge Tubes - GDT Dimensional drawings 9L17-12
16L32-100
12L22-50
12L17-25
Different contact can be manufactured on request
Technical characteristics
9L17-12
Type DC spark-over voltage (100 V/s) Impulse spark-over voltage at 5 kV/µs
b)
12L17-25
12L22-50
> 500 V
Uss Usd
< 1500 V
Insulation resistance at 200 Vdc
R
> 3 GΩ
Capacitance at 1 Mhz
C
< 5 pF
Weight Precondition test at 255 V(RMS) follow current 100 A 15 operations 8/20 µs
16L32-100
8g
12 g
16 g
41 g
40 kA
50 kA
50 kA
100 kA
a)
In
CLASS I Operating duty test at 255 V(RMS) follow current 100 A a) 1 operation 10/350 µs
0.10 x Iimp
1.2 kA
2.5 kA
5.0 kA
10.0 kA
+ 1 operation 10/350 µs
0.25 x Iimp
3.0 kA
6.25 kA
12.5 kA
25.0 kA
+ 1 operation 10/350 µs
0.50 x Iimp
6.0 kA
12.5 kA
25.0 kA
50.0 kA
+ 1 operation 10/350 µs
0.75 x Iimp
9.0 kA
18.75 kA
37.5 kA
75.0 kA
+ 1 operation 10/350 µs
1.00 x Iimp
12.0 kA
25.0 kA
50.0 kA
100.0 kA
or CLASS II Operating duty test at 255 V(RMS) follow current 100 A a) 1 operation 8/20 µs
0.10 x Imax
6.0 kA
8.0 kA
10.0 kA
15.0 kA
+ 1 operation 8/20 µs
0.25 x Imax
15.0 kA
20.0 kA
25.0 kA
37.5 kA
+ 1 operation 8/20 µs
0.50 x Imax
30.0 kA
40.0 kA
50.0 kA
75.0 kA
+ 1 operation 8/20 µs
0.75 x Imax
45.0 kA
60.0 kA
75.0 kA
112.5 kA
+ 1 operation 8/20 µs
1.00 x Imax
60.0 kA
80.0 kA
100.0 kA
150.0 kA
a) test
conditions in accordance with IEC 61643-1 values before and after loading (IEC test)
b) same
Coming soon New flat design
ISKRA ZAŠČITE d.o.o., Surge Voltage Protection Systems, Engineering and Cooperation Stegne 35, 1521 Ljubljana, Slovenia, EU P: 00386(1)5003 100; F: 00386(1)5003 236 E: [email protected]; www. iskrazascite.si We reserve the right to introduce changes in performance, dimensions and materials in the course of technical progress. Copyright All rights reserved No part of this work, nor of the information laid down herein and/or derivable herefrom and/or developed in connection herewith, may be reproduced or used in any form or buy any means. Legal action will be taken against infringements. This publication replaces the previous edition
Published by: ISKRA ZA[^ITE, d.o.o. / Edition: March 2011 /
Iimp= 25 kA
BE ON THE SAFE SIDE
Gas Discharge Tubes - GDT Gas discharge tubes (GDT) are used for overvoltage protection in low-voltage power distribution networks. GDTs are hermetically closed cells in which the gas mixture between two electrodes becomes ionized at some voltage rise and so enables some current flow. Construction of the cell is rather simple; no more than four or five pieces are joint into the compact body by pretentious manufacturing methods. There are important vacuum technique, noble gases, cleanness, degassity of materials and hermetic of the used joints. Gas arrester of high quality has to have demand characteristics: defined spark-over voltage, fast extinguish of arc current and good repeatability of properties in industrial production. Important properties are also high insulation resistance and fire safety.
New patented construction of GDT
Size comparison
Body*= electrode 1 Ordinary GDT Ceramic body BIG SIZE Iimp = 50 kA
V
ISKRA ZAŠCITE GDT
Ceramic insulator Pin*= electrode 2
Metal body SMALL SIZE Iimp = 50 kA
*All metal surfaces are nickel plated and suitable for soldering
Gas Discharge Tubes - GDT Dimensional drawings 9L17-12
16L32-100
12L22-50
12L17-25
Different contact can be manufactured on request
Technical characteristics
9L17-12
Type DC spark-over voltage (100 V/s) Impulse spark-over voltage at 5 kV/µs
b)
12L17-25
12L22-50
> 500 V
Uss Usd
< 1500 V
Insulation resistance at 200 Vdc
R
> 3 GΩ
Capacitance at 1 Mhz
C
< 5 pF
Weight Precondition test at 255 V(RMS) follow current 100 A 15 operations 8/20 µs
16L32-100
8g
12 g
16 g
41 g
40 kA
50 kA
50 kA
100 kA
a)
In
CLASS I Operating duty test at 255 V(RMS) follow current 100 A a) 1 operation 10/350 µs
0.10 x Iimp
1.2 kA
2.5 kA
5.0 kA
10.0 kA
+ 1 operation 10/350 µs
0.25 x Iimp
3.0 kA
6.25 kA
12.5 kA
25.0 kA
+ 1 operation 10/350 µs
0.50 x Iimp
6.0 kA
12.5 kA
25.0 kA
50.0 kA
+ 1 operation 10/350 µs
0.75 x Iimp
9.0 kA
18.75 kA
37.5 kA
75.0 kA
+ 1 operation 10/350 µs
1.00 x Iimp
12.0 kA
25.0 kA
50.0 kA
100.0 kA
or CLASS II Operating duty test at 255 V(RMS) follow current 100 A a) 1 operation 8/20 µs
0.10 x Imax
6.0 kA
8.0 kA
10.0 kA
15.0 kA
+ 1 operation 8/20 µs
0.25 x Imax
15.0 kA
20.0 kA
25.0 kA
37.5 kA
+ 1 operation 8/20 µs
0.50 x Imax
30.0 kA
40.0 kA
50.0 kA
75.0 kA
+ 1 operation 8/20 µs
0.75 x Imax
45.0 kA
60.0 kA
75.0 kA
112.5 kA
+ 1 operation 8/20 µs
1.00 x Imax
60.0 kA
80.0 kA
100.0 kA
150.0 kA
a) test
conditions in accordance with IEC 61643-1 values before and after loading (IEC test)
b) same
Coming soon New flat design
ISKRA ZAŠČITE d.o.o., Surge Voltage Protection Systems, Engineering and Cooperation Stegne 35, 1521 Ljubljana, Slovenia, EU P: 00386(1)5003 100; F: 00386(1)5003 236 E: [email protected]; www. iskrazascite.si We reserve the right to introduce changes in performance, dimensions and materials in the course of technical progress. Copyright All rights reserved No part of this work, nor of the information laid down herein and/or derivable herefrom and/or developed in connection herewith, may be reproduced or used in any form or buy any means. Legal action will be taken against infringements. This publication replaces the previous edition
Published by: ISKRA ZA[^ITE, d.o.o. / Edition: March 2011 /
Iimp= 25 kA
