ABB safe start, optimised solution for mining by David Stonebridge
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The document summarizes ABB's SafeStart Motor Control Centre (MCC), an optimized solution for motor control in mining applications. Key points: 1) SafeStart was developed in 2012 as an Australian optimized MCC solution and fully type tested to Australian standards in 2013. 2) SafeStart uses a demountable construction, rail-mounted electrical components, and interlocked modules that cannot be inserted if the isolator is on. 3) Extensive testing was conducted including temperature rise limits, short-circuit withstand strength, protective circuit effectiveness, and internal arc containment, meeting relevant Australian standards.
ABB safe start, optimised solution for mining by David Stonebridge
- 1. SafeStart introduction - DS October 2013 ABB Low Voltage SafeStart MCC Optimised Solution for Mining © ABB Group November 4, 2013 | Slide 1
- 2. SafeStart Motor Control Centre Introduction The demand for an Australian optimised Mining MCC solution resulted in the development of the SafeStart MCC in 2012 © ABB Group November 4, 2013 | Slide 2 For over 25 years ABB have offered the global MNS MCC’s solution to the Australian market. In 2013 SafeStart was fully type tested to AS/NZS 3439.1 at Testing & Certification Australia.
- 3. SafeStart Motor Control Centre Design Aspects Demountable (W-F-F design) IP54, Form 4a construction Arc Fault Testing to AS3439.1 Annex ZD and IEC TR 61641 Choice of components: Live Line Monitor ,ELR & controls Conventional or Smart MPR (M10X and UMC) © ABB Group Month DD, Year | Slide 3
- 4. SafeStart Motor Control Centre Design Aspects – Functional Units Rail mounted electrical components Handles for easy handling when removed Interlocked so module can’t be inserted when Isolator is “On” | Slide 4 White mounting plates © ABB Group Month DD, Year Isolator and Door padlocking Lift off hinges
- 5. SafeStart Motor Control Centre TTA to AS/NZS3439.1:2002 Requires Type Test – Verification of SafeStart 8.2.1 Temperature-rise limits Diversity 1 8.2.2 The dielectric properties 690V/1000V/8kV 8.2.3 The short-circuit withstand strength 80kA 1 sec. 8.2.4 The effectiveness of the protective circuit 8,2,5 Clearances & creepage distances 8.2.6 Mechanical operations 200 operations 8.2.7 Degrees of protection & internal separation IP54 – Form 4a Cl. © ABB Group Month DD, Year | Slide 5
- 6. SafeStart TTA to AS/NZS3439.1:2002 Clause 8.2.1- Temperature-rise limits Temperature Monitoring: Incomer, Main Bus, Dist. Bus & Outgoing units © ABB Group Month DD, Year | Slide 6 183 sensors, 16 for each Outgoing Unit To reach final temperature takes 5 to 12 hours
- 7. SafeStart TTA to AS/NZS3439.1:2002 Clause 8.2.2 Short-circuit Withstand Strength Incomer | Slide 7 Main Busbars © ABB Group Month DD, Year 80kA, 690V, 1 sec. Outgoing Functional units
- 8. SafeStart TTA to AS/NZS3439.1:2002 Clause 8.2.7 Degree of Protection IP54 © ABB Group Month DD, Year | Slide 8 Enclosed dust chamber which maintains the talcum powder in suspension - SafeStart under test for 8 hours Splashing of water from any direction shall have no harmful effect
- 9. SafeStart LV MCC Internal Arc Fault Containment (IAC) © ABB Group November 4, 2013 | Slide 9 To AS/NZS3439.1 Annex ZD . “ Standard Tests” & “Special Tests” and IEC TR 6164. Prospective Current 80kA, 415 V, 300 miliseconds
- 10. ABB Low Voltage Switchgear Solutions Customer’s Choice Proven modular construction: Incomers, Busbars & Starters , Short - circuit, temperature rise, IP and IAC tested Choice : Outgoing units - Withdrawable or Demountable. SCPD - MCCB or Fuses. MPR - Conventional or Intelligent © ABB Group Month DD, Year | Slide 10