TIM / TPH / CNT - Grounding Transformer with Petersen Coil
TIM / TPH / CNT - Grounding Transformer with Petersen Coil
Grounding transformer with Petersen coil is a transformer with ZNzn0 (or ZNyn11+d) connection and variable impedance.
The high-voltage side of the transformer is characterized by low zero-sequence impedance (less than 30 ohm). On the
low-voltage side (410V) the zn or yn+d connection allows exploitation of three-phase and one-phase voltage.
Compensative current is adjustable in 5 steps. The allowed time of a one-phase fault is up to 120 minutes.
All technical characteristics can be adjusted to the particular customer’s needs.
Remark: In comparison to the TIM-TPH Series, the CNT Series involve the maximal duration of the fault
which is 5 minutes (instead of 120 minutes of TIM-TPH) and ZNyn11+d connection (instead of ZNzn0).
General technical characteristics of TIM-TPH-CNT series:
Rated Power (kVAr): 50, 100, 200, 315, 500
Rated High Voltage (kV): 10; 11; 20,5; 22; 33
Rated Low Voltage (kV): 0,410; 0,420
Highest voltage level of equipment (kV): 12; 24; 36
Connection: ZNzn 0 (or ZNyn 11 +d)
Compensative fault Current (A): 5 … 15
R/X (%): < 2.5
Total variation Zo (%): <2
Fault duration (min): 120
Cooling: ONAN
Temperature class: A
Frequency (Hz): 50
Standard: IEC 60076-6
Download pdf brochure for TIM / TPH / CNT - Grounding Transformer with Petersen Coil
