Current transformer bus-bar type
The current transformers ISN... type are intended for assembly on the bus-bar circuit. They can be used in the mains at rated voltage up to 1.2 kV; 50 ÷ 60 Hz frequency and can operate in abbient temperature range from 248 K (-25°C) to 323 K (50°C).
The ISN... current transformers are intended for working in indoors under the normal and severe conditions such as ships, mines, chemical industry etc.
The ISN... current transformers are produced in accuracy class 0.2; 0.5; 1; 3 and 0.2S; 0.5S and have a raised rated voltage up to 1.2 kV and test voltage up to 6 kV, which makes them possible for many applications.
The ISN... current transformers are drawn on the bus-bars during the assembly and are held up by the tightening of screws on the base.
Ask for productTechnical data
| Rated primary current | Ipr= 30 ÷ 7500 A |
| Continuous thermal current | Icth= ext. 120%; 200% available on request |
| Rated secondary current | Isn= 5 A lub 1 A |
| Rated power | Sr = 0.5 ÷ 50 VA |
| Accuract class |
0.2S; 0.5S; 0.2; 0,5; 1; 3; |
| Rated short-time thermal current 1 sec. r.m.s. | Ith = 60 * Ipr |
| Rated dynamic current | depends on circuit (practically unlimited) |
| Rated frequency | fr = 50 ÷ 60 Hz |
| Max. voltage | Um = 0.72 or 1.2 kV |
| Test voltage | Up = 3 or 6 kV |
| Factor security | FS5 (other value available on request) |
Product specification
| Type/Technical data | Max bus-bar size | Rated primary current | Rated power | Accuracy class | Rated secondary current |
|
ISN 0 |
20 x 6 mm | 20 ÷ 300 A | 0.5 ÷ 7.5 VA | 0.5; 1; 3; 5 | 5 A or 1 A |
|
ISN 1 |
20 x 10 mm |
50 ÷ 800 A | 1 ÷ 15 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 2 |
20 x 10 mm |
75 ÷ 1000 A | 2 ÷ 30 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 2 |
50 x 10 mm 60 x 10 mm 60 x 30 mm 2 x 60 x 10 mm |
150 ÷ 1250 A | 2.5 ÷ 40 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 2 |
40 x 10 mm 50 x 10 mm 60 x 10 mm |
100 ÷ 1200 A | 2.5 ÷ 20 VA | 0.5; 1; 3 | |
|
ISN 3 |
60 x 10 mm 80 x 10 mm 2 x 60 x 10 mm 2 x 80 x 10 mm |
100 ÷ 2000 A | 2.5 ÷ 30 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 30 |
40 x 10 mm 50 x 10 mm 60 x 10 mm 2 x 40 x 10 mm 2 x 50 x 10 mm 2 x 60 x 10 mm |
100 ÷ 2000 A | 2.5 ÷ 40 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 31; 32; 33 |
2 x 80 x 10 mm 2 x 100 x 10 mm 2 x 120 x 10 mm |
100 ÷ 3000 A | 5 ÷ 40 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 4 |
2 x 80 x 10 mm 2 x 100 x 10 mm 3 x 80 x 10 mm 3 x 100 x 10 mm |
500 ÷ 3000 A | 5 ÷ 40 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 40; 41; 42; 43; 44 |
3 x 60 x 10 mm 3 x 80 x 10 mm 3 x 100 x 10 mm 3 x 120 x 10 mm 3 x 160 x 10 mm |
1000 ÷ 5000 A | 5 ÷ 40 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
|
|
ISN 4S |
2 x 120 x 10 mm | 1000 ÷ 4000 A | 5 ÷ 40 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
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ISN 5 |
2 x 140 x 10 mm | 2000 ÷ 4000 A | 10 ÷ 30 VA | 0.2; 0.5; 1; 3 0.2S; 0.5S |
5 A |