what is the used of The HFCT and its located cable of the transformer 132 KV...

what is the used of The HFCT and its located cable of the transformer 132 KV Cables (PD) ? and how its work

Solutions

Expert Solution

The HFCT is a high frequency current transformer designed specifically for picking up partial discharge signals. The HFCT sensors are attached temporarily or permanently around the cable and/or earth straps in the switchgear, rotating machine or transformer cable box. It has a split core ferrite to allow retrospective fitting to earth straps without the need for disconnection. The durable body has a hinge and a quick release latch, making use quick and easy. The HFCT is constructed with an aluminium body to provide RF shielding and improved performance in noisy environments.

Partial discharge activity in solid high voltage insulation induces small high frequency currents in the earth conductor of the electrical system. These impulses travel along the equipment earth to the substation earth. Using a high frequency current transformer they can be detected as they pass through the CT.

This transducer is ideal for all earth and neutral PD monitoring applications.

Manojponduru answered 2 years ago

Next > < Previous

Related Solutions

A 20MVA, 11kV/132 kV, star-delta transformer is being protected by a biased differential protection system. The...

A 20MVA, 11kV/132 kV, star-delta transformer is being protected by a biased differential protection system. The transformer is supplied from 132 kV grids and on full load operation. Determine the suitable CTs ratio at both side of the transformer if current at restraints coil is rated at 5 A. (CT ratios available: 100/5A, 300/5A, 600/5A, 800/5A, 900/5A, 1000/5A, 1500/5A, 2000/5A, 3000/5A) If lightning strikes at the secondary of the transformer which injecting IL=10kA to the system; (i) Determine the primary...

Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV,...

Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV, 50 Hz, i0 = 1.2%; ukN= 6%, idle losses 2450 W, rated power copper losses 14500 W; Dy5 connected.. III) If there is 75% load in the power factor with 0.85 inductance and 0.85 capacity. At what times of the day can capacity loading be seen? What solution should be applied to prevent voltage change? IV) Draw the fastening group. How can this transformer...

Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV,...

Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV, 50 Hz, i0 = 1.2%; ukN= 6%, idle losses 2450 W, rated power copper losses 14500 W; Dy5 connected.. Calculate the secondary VOLTAGE separately at 75% load in the power factor with 0.85 inductance and 0.85 capacity. Compare and interpret the results. At what times of the day can capacity loading be seen? What solution should be applied to prevent voltage change?

Assuming that we have a 66/11-kV primary substation with three 66/11-kV, 20MVA (rating of each transformer),...

Assuming that we have a 66/11-kV primary substation with three 66/11-kV, 20MVA (rating of each transformer), power transformers, then the installed capacity is 60MVA and the firm capacity is 48MVA. I'd like to know what is the difference between installed and firm capacity. Furthermore, how was the firm capacity calculated from the installed capacity? What I know is that the firm capacity is calculated as follow: Firm Capacity = 20 + 20 + 4 + 4 = 48MVA, and that...

Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 400 V,...

Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 400 V, 50 Hz, io = 1.2%; ukN = 6%, idle losses 2450 W, rated copper losses of power 14500 W; Dy5. a) Calculate primary and secondary line and phase currents. b) Secondary at 75% load in power factor with 0.85 inductance and 0.85 capacity calculate the voltage separately. Compare and interpret the results. capacity at what time of day can the upload be seen? To...

Transformer and Auto Transformer Q1: What do I need to know to solve Ideal Transformer, Transformer,...

Transformer and Auto Transformer Q1: What do I need to know to solve Ideal Transformer, Transformer, and autotransformer problems? Q2: What does it mean referred to primary or secondary side? Q3: How to draw phasor diagram ?

Power is generated at 24 kV at a generating plant located 55km from a town that...

Power is generated at 24 kV at a generating plant located 55km from a town that requires 60MW of power at 12 kV. Two transmission lines from the plant to the town each have a resistance of 0.11?/km . What should the output voltage of the transformer at the generating plant be for an overall transmission efficiency of 97.8%, assuming a perfect transformer?

what is asset transformer asset transformer Not asset transformation：)

A 100MVA, 400 delta / 11Y kV, 3-phase transformer has Z(eq) = 0.02+j0.05 ohm per phase...

A 100MVA, 400 delta / 11Y kV, 3-phase transformer has Z(eq) = 0.02+j0.05 ohm per phase referred to the low-voltage side, and R(c) = 1800 ohm per phase referred to the high-voltage side. If the transformer supplies rated voltage at full load at 0.8 power factor lagging. Determine its voltage regulation and efficiency.

Can a transformer be operated by a DC waveform at its input? What would be the...

Can a transformer be operated by a DC waveform at its input? What would be the secondary voltage of a 1:5 transformer, if a 12V DC is connected at its input? Consider a transformer with a turn ratio of 2:5 that is connected to a 50-V AC source at its primary input. What is the average power delivered to a 100 kilo-ohm resistor connected to the secondary terminal of the of the transformer? Is there a direct electrical connection between...

Subjects