What is a pole mounted substation?

Pole-mounted substation is designed for electric power reception of three-phase alternating current, frequency of 50 Hz with the highest operational voltage up to 12 kV (rated operational voltage of 6 or 10 kV), transformation of electric power to a voltage of 0,4 kV in the system with deadly earthed neutral of …

What is the capacity of pole mounted substation?

Pole mounted Distribution Transformer substation (DT S/S) Normally, single phase DT upto 25 KVA capacities are installed on single pole/2 pole structure and 3 Phase DTs up to 500 KVA capacities are mounted on 2 pole or 4 pole structure or on plinth.

What do you mean by substation?

A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. The word substation comes from the days before the distribution system became a grid.

How does a pole mounted transformer work?

Both pole-mount and pad-mount transformers convert the high ‘primary’ voltage of the overhead or underground distribution lines to the lower ‘secondary’ or ‘utilization’ voltage inside the building. This has a 7.2 kV phase-to-neutral voltage, exactly 30 times the 240 V on the split-phase secondary side.

Why pole mounted substation are very popular?

Pole Mounted Substation Such substations are used for supporting distribution transformers having the capacity up to 250 KVA. Lightning arresters are equipped over the high tension line for the protection of the transformers from the surges. Pole-Mounted substations are earthed at two or more places.

Why battery bank is used in substation?

Battery rooms are also found in electric power plants and substations where reliable power is required for operation of switchgear, critical standby systems, and possibly black start of the station. Separate battery rooms may be provided to protect against loss of the station due to a fire in a battery bank.

Why DC is used in substation?

The main reason for using DC supply in substation or power stations is to provide a continuous power supply to the control circuit. DC is a reliable source of power supply because it can obtain from batteries. The battery has electrical energy storing capability that’s why it can be used for backup power supply.

Why is it called a substation?

Actually, the name came before the electrical system was a grid. These substations were smaller plants that were no longer being used because of the construction of larger generation plants. They received their energy from these larger plants and then distributed; thus the name “substation”.

How much does a power pole transformer cost?

Power pole transformers cost anywhere from $3,000 to $7,000 each, depending on how much electricity they’re designed to handle. The money comes from utility customers.

Can you touch a service drop?

The overhead power line to your house is the the 120/240 Volts service drop and is insulated up to 600 volts. By just touching it, you will not electrocute yourself. Touching one of the phase wires on your house service, if you are grounded, can certainly electrocute and kill you outright.

What are the function of fuse in a pole mounted substation?

The primary purpose of a power fuse is to provide interruption of permanent faults. Fusing is an economical alternative to circuit switcher or circuit breaker protection. Fuse protection is generally limited to voltages from 34.5 kV through 69 kV, but has been applied for protection of 115-kV and 138-kV transformers.