Product introduction
In the cathodic protection system, solid state de-coupler as dc isolation and AC coupling device is not only used to prevent the cathodic protection current from reaching a predetermined threshold voltage, but also can conduct inductive alternating current.
- Product features:
- Stable performance: it is conductive to the coupled AC current on the pipeline, which can effectively reduce the induced AC interference voltage.
- Able to withstand the expected large impact: in the case of induced lightning or single-phase short circuit fault of power lines, it can withstand the expected large impact or fault current, and the fault state is short circuit mode.
- Wide range of application: adapt to field environmental conditions, meet the requirements of easy installation and maintenance on site.
- Long life: Reasonable use, service life can exceed 20 years.
- Product application:
- Transient, transient and long-term overvoltage protection.
- Solid state de-coupler can be used in electrified railway, high voltage AC transmission and distribution, substation, power plant and other AC interference sources to alleviate the ac interference of buried steel pipeline.
- Ac grounding and DC isolation of electrical equipment in the cathodic protection system.
product Parameter
| Technical parameters | |
| Rated isolation voltage | -2V/+2V(optional -3V/+1V, -2V/+0.4V) |
| Nominal discharge current (8/20us) | 100KA |
| Lightning impulse current (10/350us) | 50KA |
| Ac fault current | ≥3500A(optional: 5000A, 9000A) |
| Steady state ac current rating (±2V) | 50A |
| Dc leakage current | ≤1mA |
| Response time | 10ns |
| Protection level | IP65 |
| Explosion-proof grade | Exd II CT4 |
| Operating temperature range | -25 ℃ ~50℃ |
| Installation method | with explosion-proof box and bracket surface installation |
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