Specifications

Design Guidelines & Procedures Version 18 ©
Electrical Services Section 20.00 / Page 22
20.16 High Voltage System
Consideration shall be given in the design of high voltage systems for the consolidation of the
system with the existing HV reticulation.
Consideration shall also be given to the provision of a single metering point for multiple buildings
through one external switchboard, as the first option.
Whenever any work is to be performed on the high voltage system at a GU campus, the following
procedures are to be followed;
 All High Voltage Switching shall be performed by ENERGEX.
 Switching requests shall be in writing on the appropriate ENERGEX form and approved
by the Superintendent before being submitted to ENERGEX. The form shall be lodged
with ENERGEX by the Contractor in advance of the desired switching date with
sufficient notice to meet the construction program. A photocopy or duplicate shall be
lodged with the Superintendent at the same time.
 Where any high voltage cable is to be cut, altered or moved, the Contractor shall
arrange with ENERGEX to test and mark the cable to ensure that it is the correct cable
and that it is not ‘live’ before work commences.
 All work shall be checked and/or tested as appropriate before the switching is carried
out by ENERGEX at the end of the job.
 The Contractor shall meet all costs associated with the above.
 Wherever possible any new substation shall be installed within the ring main system on
the respective campus. ‘Spur lines’ or radial feeding of new substations should be
avoided.
Note: The 11kV HV network on the Logan Campus is privately owned by GU. The above works
shall only be conducted by a private subcontractor, i.e. other than Energex, with the prior
approval of the Superintendent. All works shall be completed in compliance with both AS 3000
and Energex requirements. Full design documentation detailing the proposed modifications to
the HV network shall be submitted to the Superintendent for approval.
20.17 Testing
The entire installation shall be tested by an independent electrical contractor prior to being
energised.
Testing shall be fully in accordance with AS 3000 and the supply authority requirements. Testing
shall include all mandatory tests as per AS 3000 and the following additional tests as described
in AS 3000:2000 clause 6.3.4:
 Fault-loop impedance tests to all power subcircuits; and
 Verification of operation of 100% of RCD’s.
The Superintendent shall be advised seven (7) days prior to testing. All faults detected during
testing shall be immediately rectified and retested at no additional cost to GU.
On all projects, the Main Switchboard, distribution boards and load centres installed or modified
within the project shall be checked using a Thermoscan infrared scanning unit or equivalent
during the defects liability period by the Contractor at a time of maximum demand to check for
faulty connections.
Testing of all emergency luminaries and exit lights shall be carried out by the manufacturer.
All test results shall be recorded and provided to the Superintendent on completion of testing.
The installation electrical contractor is required to perform random tests on all systems as
directed and witnessed by an appointed CLF staff member.
Any defects found shall be made good prior to the issue of a Certificate of Final Completion and
a complete report together with thermal photographs shall be provided on completion.