Which transformer is used in 33 11kV substation?
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Which transformer is used in 33 11kV substation?
Transformers: To step down the 33kV primary voltage to 11kV suitable for distribution purpose. One 33kV/0.415 auxiliary transformer was also needed to supply the substation with reliable AC power.
What is the need of 33 11 KV substation?
The 11kV lines are used in residential areas and is what feeds the local transformers, which then distributes power to the buildings in the area. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.
How many transformers are in a substation?
A transformer substation usually has one or two power transformers, distribution equipment, control and protective devices, and auxiliary equipment.
What CT is used in 33 KV SS?
Product Specification
| Accuracy Class | 0.2, 0.2s |
|---|---|
| Material | oil filled |
| CT Ratio | 400/1 or as required |
| Rated Voltage | 33 KV |
| Usage/Application | Transmission and Distribution |
How do you identify 33 11KV overhead lines?
For the 11KV transmission line, generally Double Pole(DP) structure is used. In a transmission line, if three pieces of disc insulators per phase are connected, then the KV of the transmission line is 33KV.
What is a 33 kV substation?
33kV substation earthing is provided around the transformer bund and new building structure using copper earthing tapes, electrode rods and exothermic welding (CADWELDing) of the earth rods to tape – 50mm x 4mm earth tapes are installed as a ring and cross earthing design with 40mm x 4mm copper tape braised for …
Which type of circuit breaker is used in 11KV substation?
Vacuum Circuit Breaker VCB is used for medium-voltage ratings (like 11KV and 33KV). It is widely used for the substation for the overload or high current protection.
Which transformer is used in substation?
The 132kV is the rating of the step-down transformer, which has a 132kV primary voltage. Generally, these transformers are employed in transmission type substations where the voltage has to be stepped-down to additional distribution.
How do you identify a 33 KV line?
In a transmission line, if three pieces of disc insulators per phase are connected, then the KV of the transmission line is 33KV.
Why 11kV 22kV 33KV 66kV 132kV?
For this reason, they transmit 10% extra voltage. For example: Sending Voltage = 10kV x 10% = 11kV….If it is not related to the form Factor, What is it then?
| Sending Voltage | Receiving Voltage |
|---|---|
| 20kV x 10% = 22kV | 20kV |
| 30kV x 10% = 33kV | 30kV |
| 60kV x 10% = 66kV | 60kV |
| 120kV x 10% = 132kV | 120kV |
How are power transformers used in substations?
Power transformers are at the heart of the substation. They step down the voltage from 735,000 volts (735 kV) to 120,000 volts (120 kV), the subtransmission level at which it is carried to regional substations. Surge arresters are protective devices located on either side of power transformers.
What type of thing is found in 11 kV substation?
11kv Substation This substation includes isolator, lightning arrester, step-down transformer, CT metering, circuit breaker, and capacitor bank.
What is difference between transformer and substation?
A transformer is an electrical machine which either steps up, or steps down, voltage. A substation is a location where transformation and/or switching takes place. In its simplest form, a substation can be a pole- or pad-mounted transformer, together with its protective equipment (hv and lv fuses).
What type of your thing is found in 11 kV substation?
Main Components of 11kV Substation The isolator is placed on the supply side of the circuit breaker so that the circuit breaker isolated from the live parts of the maintenance. Lightning Arrester – The lightning arrester is a protective device which protects the system from lightning effects.
How do you identify 33 11kV overhead lines?
