GENSETS
AUGUST 2021
HELPING THE NEEDY: 1100KVA GENSET FOR THE ROYAL MELBOURNE HOSPITAL, AUSTRALIA
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ummins South Pacific has sold a C1100D5 (1,100kva) genset to the Royal Melbourne Hospital (RMH) as part of a comprehensive power supply upgrade. A company spokesman commented: “Another Cummins C1100D5 Generator has been successfully installed into a hospital in Melbourne, Australia. Cummins was chosen for this project due to our local team’s track record of success in delivering similar projects from design, installation and aftersales support. The scope of this project included supply & site mechanical installation of a C1100D5 into a locally-built acoustic enclosure rated 85dBA @ 1 metre-free field, free-standing fire-rated 6,750-litre fuel tank, site testing/commissioning & DLP maintenance plan.” Today, the RMH is one of the largest health providers in the state, providing a comprehensive range of specialist medical, surgical, and mental health services; as well as rehabilitation, aged care, outpatient and community programs. RMH’S care extends from the City through Royal Park and 32 mental health services across the north-western suburbs of Melbourne. We are a designated state-wide provider for services including trauma, and it leads centres of excellence for tertiary services in several key specialties including neurosciences, nephrology, oncology, cardiology and virtual health. There were 78,630 people provided with urgent care in the RMH emergency department in 2019/20 and 103,470 inpatient admissions across its acute and sub-acute services in 2019/20 The Cummins C1100D5 is an industrial diesel generator which has been designed to deliver power to this vitally important RMH site. Whether you require continuous duty, stationary standby or prime power, this generator set offers the versatility and reliability customers have come to expect from Cummins - a company which brings commitment to performance as well as one hundred years of engineering excellence, says the manufacturer. All Cummins generators can be used both industrially and commercially. These clean, modern generators with optional exhaust aftertreatment are suitable for either standby/emergency power, continuous or prime power applications. Cummins provides efficient, fully-integrated systems built for reliability in uncertain circumstances.
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WORLDWIDE INDEPENDENT POWER
This 1000 kVA (Prime) / 1110 kVA (Standby) C1100D5 is a three-phase generator with a QST30G4 engine and HCI6K alternator. Producing 1602.0 amps per phase and a 380-440v output, this Open, Auto start generator offers Cummins’ tried and tested reliability everytime, says the manufacturer. A company spokesman commented: “This Cummins C1100 D5B canopied generator is a fully integrated power system providing optimum performance, reliability and versatility for stationary standby or prime power and continuous duty applications. It features a Cummins heavy-duty engine (rugged 4-cycle industrial diesel) delivering reliable power with low emissions and fast response to load changes.” The C1100D5 has a STAMFORD HCI6K alternator. This incorporates as sophisticated Automatic Voltage Regulator (AVR) in the Stamford Permanent Magnet Generator (PMG) system and is fitted as standard. The PMG provides power via the AVR to the main exciter, giving a source of constant excitation power
independent of generator output. The main exciter output is then fed to the main rotor, through a full wave bridge, protected by a surge suppressor. The AVR has in-built protection against sustained over-excitation, caused by internal or external faults. This de-excites the machine after a minimum of 5 seconds. Over voltage protection is built-in and short circuit current level adjustments is an optional facility. All generator stators are wound to 2/3 pitch. This eliminates triplen (3rd, 9th, 15th) harmonics on the voltage waveform and is found to be the optimum design for trouble-free supply of non-linear loads. The 2/3 pitch design avoids excessive neutral currents sometimes seen with higher winding pitches, when in parallel with the mains. A fully-connected damper winding reduces oscillations during paralleling. This winding, with the 2/3 pitch and carefully selected pole and tooth designs, ensures very low waveform distortion. www.cummins.com
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