AMEREN IPPower Plant

Generate 13,800 vTransmission 345,000 v

Transmission SubstationIn – 345KV

Out – 138 KV

Sub – Transmission SubstationIn – 138KV

Out – 69 KV or 34.5 KV

Distribution SubstationIn – 34.5 KV

Out – 12KV or 4KV

Business or ResidenceTransformer

12KV to 120/240 volts

KV = 1000 volts12 KV = 12,470 volts phase to phase

7,200 volts phase to ground

4KV = 4160 volts phase to phase2400 volts phase to ground

AMEREN IP

DISPATCH SERVICES DecaturLoad Dispatch

34.5 KV and aboveSubstations/ Air-breaks/ Hi-

lines

Distribution DispatchDistribution SystemLocal trucksDaily Orders/ Trouble

Calls/ Etc.

AMEREN IP

AMEREN IP

• POTENTIAL DIFFERENCE– Step Potential

• Farm Animals

• Climbing trees

• Auto Accidents

• Ladders / Aerial Devices

• Lightening Strikes

• Rippling Water

AMEREN IP