Y1W2 Electrical systems

4 main parts to the electrical system

• Nuclear, Gas, Coal and Hydro

• AC, DC, Current, and Voltage

• Generation, Transmission, Substation, and Distribution

• Wye-Wye, Wye-Delta, Delta-Delta, Open Wye-closed Wye

Transmission voltage

• 230kv-765kv

• 13.8kv-24kv

• 44kv-138kv

• 2kv-34.5kv

NERC stands for North American Electric Reliability Corporation

• False

• True

Which of the following is NOT a type of protective equipment on a distribution line?

• Fused cut outs

• Reclosers

• Guy guards

• Lightning/surge arrestors

Which of the following is NOT a function of a substation?

• Change voltage of circuits up or down

• Generate power to transmit across open right of ways

• Connect or disconnect lines or equipment from each other

• Control the flow of power by adjusting voltage and current

__________Improve efficiency of the circuit by introducing capacitive reactance on the circuit to counteract negative effects of inductive reactance caused by transformers and customer owned equipment

• Fused cutouts

• Capacitors

• Regulators

• Switchgear

44kv-138kv is

• Generation voltage

• Distribution voltage

• Sub Transmission

• Transmission

Conductor bundles are generally found on distribution lines and can be 2, 3, or 4 per phase

• False

• True

Answer explanation

Conductor bundles are common to Transmission

Radial circuits have how many alternate sources to back feed from should a circuit need to be cleared

• 3

• 2

• 0

• 4

Service lines run

• Pole to pole

• Pole to house

• Pole to transformer

• Underground pedestal to house