- Fitted between the air space of conservator and outside vent for power transformer
- The breathing of transformer during load cycles takes place through breather.
- Filled with silica gel.
- The silica gel absorbs moisture.
- When the load increases, the load expands and the air from the conservator is expelled.
- During reduced load, the oil level in conservator falls down and the atmospheric air is breathed in side.
- This incoming air is taken through silica gel breather or activated alumina breather,
- Silica gel absorbs moisture.
- Dry silica gel is blue and turns pale pink as it absorbs moisture.
- Wet silica gel can be reactivated /regenerated by drying.
Definitions CSD (Controlled Switching Device): A device that is installed at the relay and control panel to overcome the transient behaviour of voltage and current during switching. This device synchronizes the switching of each pole of the circuit breaker according to the zero crossing of the corresponding phase. This device is also known as a phase synchronizing device, or PSD for short. Requirement When we switch off an online circuit breaker to disconnect an inductive load, we ideally want to interrupt the current of the system at the zero crossing of the current waveform. However, this is practically impossible to achieve. In a normal circuit breaker, the current interruption may occur near the zero crossing point, but not exactly at it. Since the load is inductive, this sudden interruption of current causes a high rate of change of current (di/dt), which results in a high transient voltage in the system. In low or medium voltage power systems, this transient voltage during circui...