Document Number: EDS 06-0017D
Version: 4.0
Date: 31/07/2015
RAILWAY PME APPLICATION FORM
Section 1 (to be completed by UK Power Networks)
UK Power Networks Reference
Click to enter reference
UK Power Networks Designer
Click to enter designer name
Section 2 (to be completed by railway operator)
Customer
Click to enter customer name
Customer Contact
Click to enter customer contact
Location of Supply
Click to enter location of required supply
Section 3
To be completed by railway operator for all LV supplies associated with railways (electrified or
non-electrified)
3.1
Q
Are there other DNO supplies to the same premises or installation?
A
a) Click to select
b) If yes, answer question 3.2 below
3.2
Q
Will other the DNO supplies be removed?
A
a) Click to select
b) If no, answer question 3.3 below
3.3
3.4
3.5
Q
Is there a common metallic coupling (cable, track etc.) between the PME earth terminals?
A
Click to select
Q
Will the installation be constructed in accordance with BS 7671?
A
Click to select
Q
a) Will the intake cubicle be metallic?
b) If yes, how will the external touch potentials be controlled so as to prevent danger to
the public?
A
a) Click to select
b) If yes, click to enter details of how external touch potentials will be controlled
3.6
3.7
3.8
Q
Is the railway electrified?
A
Click to select
Q
Is the railway electrified using an AC traction system?
A
Click to select
Q
Is the railway electrified using a DC traction system?
A
Click to select
© UK Power Networks 2017 All rights reserved
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Railway PME Application Form
Document Number: EDS 06-0017D
Version: 4.0
Date: 31/07/2015
Section 4 (to be completed by railway operator)
To be completed by railway operator if the LV Supply is associated with a AC traction system
4.1
Q
a) Is there a DC traction supply also associated with the railway?
b) If yes, is there a transfer track between the AC and DC supplied tracks?
A
a) Click to select
b) Click to select
4.2
4.3
4.4
4.5
Q
Will the DNO earth terminal be bonded to the traction running rails?
A
Click to select
Q
Is the bonding conductor between the earth terminal and traction return rail adequately
sized to carry foreseeable traction fault current?
A
Click to select
Q
Is there a traction supply point at the railway station?
A
Click to select
Q
In the event of a traction circuit fault the earthing and protection design must prevent
dangerous voltages being transferred via the DNO combined neutral-earth conductor.
The railway operator is required to confirm maximum rise of potential on the DNO earth
and clearance time for: a) Zone 1 fault b) Zone 2 fault.
A
4.6
4.7
a) Zone 1 EPR: Click to enter EPR
Clearance Time: Click to enter time
b) Zone 2 EPR: Click to enter EPR
Clearance Time: Click to enter time
Q
Due to traction currents a voltage will appear on the traction return rail, which could be
impressed on the DNO combined neutral-earth conductor. Will a voltage in excess of 25V
be impressed on the DNO earth terminal under these conditions?
A
Click to select
Attach:
a) Electrical schematic of proposed route from DNO intake to main switch room ☐
b) Earthing diagram ☒
© UK Power Networks 2017 All rights reserved
2 of 3
Railway PME Application Form
Document Number: EDS 06-0017D
Version: 4.0
Date: 31/07/2015
Section 5
To be completed by railway operator if the LV supply is associated with a DC traction system
5.1
Q
a) Is there an AC traction supply also associated with the railway?
b) If yes, is there a transfer track between the AC and DC supplied tracks?
A
a) Click to select
b) Click to select
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
Q
What is the electrification system? (e.g. 3rd rail 700V)
A
Click to enter details of electrification system
Q
Is either pole of the traction supply directly connected to earth (except for the sole
purpose of the detection of earth fault conditions)?
A
Click to select
Q
Is the traction supply rail insulated from earth?
A
Click to select
Q
Is the traction return rail insulated from earth?
A
Click to select
Q
Will the LV supply including the protective earthing conductor and all earthed metal
associated with it be segregated from all DC conductors by at least 1 metre the soil in
accordance with BS EN 50122-2?
A
Click to select
Q
Are there any incidents of corrosion to the rail, infrastructure or electrical connections
attributed to DC current?
A
Click to select
Q
Does the voltage between running rails and earth satisfy the requirements of
BS EN 50122-1 (less than 5V)?
A
Click to select
Q
Does the conductivity between running rails and earth satisfy the requirements of
BS EN 50122-2 (less than 0.55 S/km per track)?
A
Click to select
Attach:
a) Electrical schematic of proposed route from DNO intake to main switch room ☐
b) Earthing diagram ☐
© UK Power Networks 2017 All rights reserved
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