Document Library - 4.1.4 Prospective Short Circuit Current (PSCC)

4.1.4 Prospective Short Circuit Current (PSCC)

The values of PSCC will vary for different supply arrangements and locations. The tables below show the PSCC values:

East of England (EPN)

East of England (EPN)	Single phase cut-out 100Amp off network cable	Three plase cut-out 100Amp off network cable	Three phase cut-out 200Amp off network cable	Three phase cut-out 400Amp of network cable	Three phase cut-out 400Amp?direct from Substation	Three phase cut-out 600Amp direct from Substation	Three phase cut-out 800Amp direct from Substation
PSCC at point of supply	16kA	18kA	18kA	18kA	25kA	25kA	25kA

London (LPN)

London (LPN)

Single phase cut-out 100Amp off network cable

Three plase cut-out 100Amp off network cable

Three phase cut-out 200Amp off network cable

Three phase cut-out 400Amp of network cable

Three phase cut-out 400Amp?direct from Substation

Three phase cut-out 600Amp direct from Substation

Three phase cut-out 800Amp direct from Substation

PSCC at point of supply

16kA

18kA

25kA

South East of England (SPN)

South East of England (SPN)	Single phase cut-out 100Amp off network cable	Three plase cut-out 100Amp off network cable	Three phase cut-out 200Amp off network cable	Three phase cut-out 400Amp of network cable	Three phase cut-out 400Amp?direct from Substation	Three phase cut-out 600Amp direct from Substation	Three phase cut-out 800Amp direct from Substation
PSCC at point of supply	16kA	24kA	28kA	30kA	46kA	46kA	46kA

Prospective short circuit current at UK Power Networks' supply terminals is not expected to exceed the values shown above.

Please remember that the values shown, are under normal conditions considered to be maximum for UK Power Networks' network. However, while they are given in good faith, I am sorry that UK Power Networks cannot guarantee the values quoted will continue for all time.

Prospective Short Circuit Current (PSCC) for HV and EHV Points of Supply

The prospective short circuit current at UK Power Networks' supply terminals is not expected to exceed acceptable values based upon the specific supply arrangements and location of the connections. If you require a site specific value, please contact your Project Designer or Project Manager who will arrange for a detailed study to be carried out. This service is chargeable.

V1_December2015