The state-of-art current transformers AT 35, AT 38 and AT41 extend the existing portfolio for power grid applications allowing fast and secure mounting inside of the device without any risk of coil damage.
All the subtypes are epoxy free. The instrument transformers AT 35 and AT 41 turret design are designed as a full metal non-oxidizing body. On the contrary AT 38 active parts design is designed without any metal in the body and only oil absorbing materials including high density casein laminated pressboard are used. Total number of inner dimensions within the AT portfolio is twenty, rated primary current is up to 15 000 A, rated short-time thermal current is up to 100 kA (1s), highest voltage for equipment is 1.2 kV.
Benefits
- Multi-coil transformer representative is designed as one set focused on easy manipulation
- AT can be mounted around existing pass or bushing in oil
- Pre-assembled design secures rigid coil fixation and easy and fast installation/servicing procedure
Product features
- Epoxy free
- Variety of diameters - in range of 300 mm to 1055 mm
- Lifetime - 40 years in full operation
- Transient classes performance - for protection transient phenomenon
- Tested according to the latest standards IEC 61869-1, IEC 61869-2
- Two designs - oil absorbing and full metal design according to type of usage
