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Project : AMRUN (SOUTH OF EMBLEY) BAUXITE PROJECT - LLV VARIABLE SPEED DRIVES

Non-Construction Items
Supply/fabrication
  Estimated Project Value
$ 250,000
Address South of
Suburb Weipa
State QLD
Council Weipa Shire
Postcode 4874
Project Type Variable Speed Drives
Development Type New
Status Firm
Stage Completed
Ownership Private
Notes
Contract Let Supplier Named (Rta_Soe_016)
Commence Date 1/1/2017
Completion Date 2/1/2018
Details
  • For the provision of 57 LLV Variable Speed Drives to be used to control conveyors & pumps & shall be standardised as far as possible & selected for applications ranging from 0.8kW to 355kW in size.
  • To be powered from a 3 phase, 415V AC ±10%, 50Hz power supply from a Motor Control Centre (MCC).
  • VSDs shall be installed indoors in an air-conditioned switchroom & are required to have a minimum ingress protection rating of IP42 & shall be capable of operating at 40oC in case of air conditioner failure.
  • All VSDs shall be variable voltage variable frequency, voltage source with Pulse-width Modulation (PWM) output & shall use flux vector motor control technology.
  • VSDs shall be suitable for four quadrant operation, & be rated for continuous operation.
  • The VSD shall have a galvanically isolated input to accept forward & reverse acting frequency/speed control by a 4-20 mA external signal, Ethernet link or manual operation.
  • There may be some multi-drive applications in which the speed shall be controlled via a master/slave configuration.
  • The VSD shall provide comprehensive motor protection by an electronic thermal model for all motors, backed up by standard motor thermistor input for motors sized 37 kW and above.
  • The VSDs shall provide a safe-torque-off feature in order to comply with Safety Integrity Level (SIL) ratings.
  • VSDs shall provide a serial communication link using EtherNet/IP.
  • The VSDs shall include suitably sized dV/dt, EMC & RFI filters to minimise harmonic & other disturbances being injected into the AC power supply & the motor feeder.
  • The VSD enclosure shall include all protection devices & filters to protect the motor & upstream feeder against harmonics & interference.
  • VSDs shall meet the following voltage & current harmonic distortion limits at the MCC, using the minimum fault current rating provided by Rio Tinto: Voltage Harmonics: All connected VSDs at each bus shall not exceed 3% total harmonic voltage distortion at the MCC.
  • Current Harmonics: Maximum allowable total harmonic current distortion limits for each VSD shall not exceed 5% at the MCC.
  • The vendor shall be required to conduct a harmonic study to calculate the harmonic spectrum for current & voltage distortion for each MCC.
  • If the calculated voltage distortion exceeds the nominated limits, harmonic mitigation equipment shall be included as part of the VSD offer.
  • All VSDs shall be completely assembled, pre-wired, & tested as a complete package prior to shipment.
  • The vendor may be required to provide technical assistance & on-site services as required by Rio Tinto for the setup, testing & or commissioning of the VSDs in the switchrooms & or on site.
  • Only designs & technology that have been proven in service for a minimum of five years in a mining environment shall be offered.
  • The electrical design, construction & installation shall conform to all applicable Laws & Australian Standards including, but not limited to: Electrical Safety Act 2002 (Qld), Electrical Safety Regulation 2013 (Qld), Work Health & Safety Act 2011 (Qld), Work Health & Safety Regulation 2011 (Qld), Mining & Quarrying Safety & Health Act 1999 (Qld), Mining & Quarrying Safety & Health Regulation 2001 (Qld), Workplace Health & Safety Queensland Code of Practice for Plant, Workplace Health & Safety Queensland Code of Practice for Noise Management at Work, AS 3000 ? Wiring Rules, AS 3007 - Electrical Equipment in Mines & Quarries ? Surface Installations & Associated Processing Plant, AS 4871 ? Electrical equipment for mines & quarries.
  • Associated Overall Project ID 1017602.
 
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