In March 2021 in JUNDEE, Northern Star Installed two 1250kVA 415V containerised generators, and installed a 120sqmm Cu 3C XLPE/SWA/PVC 6.35/11kV 490m long cable from the containerised substation to the level 1 substation. Apart from this, Geographe Electrical & Communications engaged Gridbow Electrical Power Solutions to perform commissioning of the Merlin Gerin Ringmaster RMU and testing the transformer. Furthermore, earth testing, jointing, and termination of the 800A Ausprof Ex118BSS RANGE – 11,000 volts (800 amp) flameproof couplers. However, the 490m long cable run from containerised substation to the level 1 substation underground. Thus, Gridbow Electrical Power Solutions successfully joined and terminated the cable on both sides. Furthermore, conducted DC insulation resistance test, and Very Low Frequency (VLF) high voltage withstand test of the cable.
In February 2021 AAA Metal Recycling Installed 3MVA, 22KV HV supply from Western Power Network, at its Kwinana Refinery. Apart from this, EMCAL electrical PTY LTD engaged Gridbow Electrical Power Solutions to perform commissioning of the RMU and testing the transformer. Furthermore, earth testing, termination of all the incomer cable, feeder cables, and to test all feeder protection relays. In addition, through secondary injection, other work carried out included:
In May 2020 Round Oak Mine, had a problem with transformer 60TFR01 feeder breaker tripping a few times which they suspected was stemming from the transformer, itself. Moreover, Tech Energy services engaged Gridbow Electrical Power Solutions to perform the tan delta testing, PI, ratio testing, and winding resistance testing of the transformer as well as relay testing. However, after the transformer had passed all the tests mentioned above, based on the protection setting Round Oak Mine had provided in order to carry out primary injection testing. In conclusion, we discovered the setting on the relay were tempered with. Thus, after we had carried out primary injection testing on the WIC1 relay, as shown below.
In August 2021 Spotless Linen Murdoch, arranged to shut down in order to test and maintain their 22KV HV Switchgear including 3 x 1MVA transformers and 5 CB. In addition to this, Aptus Power engaged Gridbow Electrical Power Solutions to prepare and execute high voltage switching programme, and other work carried out included:
In September 2021 BP Castrol Fremantle, arranged a shutdown to test and commission the new ABB ultra-fast earthing switch (UFES). In addition, Aptus Power engaged Gridbow Electrical Power Solutions to perform testing and commissioning of the new ABB ultra-fast earthing switch. Gridbow was tasked to further design inter trips / emergency shutdown in the event of Arc flash fault.