Fault Summary The following table is a summary of faults or items featured for your information

Transcription

1 This document is an annotated sample of a report you receive. following our visit to your premises... We pride ourselves on the quality of the report and submit. this sample for your evaluation.. Report Report Type Preventative Maintenance Inspection Prepared For The Building or Asset Manager Requested by The Body Corporate Date 01/01/2020 Your Ref PO Our Ref

2 We can trace your records back more than 14 years Infrascan Sample Report.docm Quick View so your plant manager can act on this summary without reading the entire report Fault Summary The following table is a summary of faults or items featured for your information Green, Amber, Red traffic light Quickly defines the fault severity Page Infrared Image No Fault Grading 5 IR JPG No Fault: For Your Information Only 6 IR JPG Very Minor Fault Low 7 IR JPG Minor Fault Moderate 8 IR JPG Urgent Fault - Extreme St Ives NSW 2075 Page 2

3 Items Inspected The following table is a summary of electrical switchboards and items inspected. Switchgear Additional info Scanned Level 4 Level 3 Level 2 Level 1 Plant room Level GB MS 3 Level GO Level B2 House DB Level B1 House DB A/C Board Booster Pump Board Main Switchboard Power Factor Cabinet Level 1 Plant room MS4 Level 26 MS1A - A/C Control Board Basement Fire Control Room Make Up Water Tank Distribution Board St Ives NSW 2075 Page 3

4 Inspection Protocol Items inspected are those which can safely be opened to view (covers removed). Thermal image analysis assumes the equipment is under at least 40% load at the time of inspection. Scope If we receive specific instructions from your representative as to where to scan while at your premises, then we have relied specifically on those instructions. It is most important to note that no further scanning is undertaken. Cause and repair of faults Note: these are general observations and will not apply in all cases or conditions. This is general knowledge to most Electrical Repairers Hot Spots There are three main causes of over heating connections / components: 1) Loose connections 2) Faulty components 3) Overload (current) conditions The connections of components and cables rely on clean mating surfaces to keep connection temperatures at normal. Clean, tight connections generally do not break down even under 20% overload conditions. Heat Damage Heat is mainly in evidence at the connection between a component (switch, contactor etc) and a cable/bus bar. If the cable connection to the component is loose then the connection is at fault. If the connection is good, clean and tight the fault is within the component. Worn or oxidised poles within a component will show as hot spots at the connection. Heat damage repair Tightening of connections which have been heat damaged will have only a temporary effect, as the heat will have caused oxidation and arcing damage to occur on the surfaces of the connections. Pressure of a tightened connection will initially lower the resistance of the joint temperature to near normal, but the small amount of residual resistance will eventually cause the problem to recur. To determine if the hot spot is caused by the connection it should be checked for tightness. If found to be loose: Cable/bus bar connection should be disconnected, cleaned and made good. The component may have suffered heat damage (indicated by oxidation / charring) and should be replaced if damage is evident after cleaning. If the connection is tight and good, the most likely source of the hot spot with switches and contactors are the poles, these are moving parts and the most likely to be faulty and in need of repair/ replacement. Fault levels Negligible Fault Very Minor Fault Minor Fault Serious Fault Urgent Fault There is a fault, but the equipment is within acceptable standards and should continue to function normally. Does not require repair for 9 months or more. There is a fault but at a level as to not require repair for 6 months or more. Fault at a low level needing repair or reassessment in 3 months time Requires repair in 2 to 3 weeks Requires immediate attention: could fail at any time Your representative will be informed while we are still on site Clear definitions for ease of understanding and recommended time to repair. St Ives NSW 2075 Page 4

5 We routinely use a digital camera to maintain excellent visual image quality.. Digital pictures are routinely annotated. This ensures there is no mistaking the fault location, assisting the repairer. Infrared Image IR JPG Visual Image Information: Asset Level 3 Adjacent South Loading Dock Switchboard Name Level 3 House Distribution Board Equipment 20 Amp 1Ø Miniature Circuit Breaker (MCB) Fault Description Overload Load Side CØ. Working Conditions AØ 22 Amps. Normal Background Temp 17.6 C Distance 2.0m Create Time 03/08/2011 Analyses Table: Object Parameter Max Min L1:AvgTemp L1:MaxTemp L2:AvgTemp L2:MaxTemp Comments: Value 43.3 C 19.1 C 24.0 C 41.3 C 24.0 C 25.6 C Fault Rating Recommendation or Comment Corrective Action Taken: Date No Fault MCB is beyond maximum permissible load. Monitor circuit for over current, replace breaker if faulty. OR Split load if spurious tripping occurs. Note the latitude for tripping is pretty wide. Refer: Signature St Ives NSW 2075 Page 5

6 Note quality of thermograph - we only use top end cameras no grainy hard to read images... Every thermographic picture is routinely edited to maximise the definition and impact of the fault.. Infrared Image IR JPG Visual Image Information: Asset Level 3 Adjacent Loading Dock. Switchboard Name Level 3 House Distribution Board Equipment 100 Amp 3Ø Miniature Circuit Breaker (MCB) Fault Description Termination Fault Line Side CØ. Working Conditions AØ 40 Amps, BØ 28 Amps, CØ 38 Amps Normal Background Temp 23.3 C Distance 2.0m Create Time 17/10/2009 Analyses Table: Object Parameter Max L1:AvgTemp L1:MaxTemp L1:MinTemp L2:AvgTemp L2:MaxTemp Min Value 51.0 C 33.2 C 50.6 C 26.7 C 26.4 C 27.7 C 23.8 C Comments: Fault Rating Recommendation or Comment Corrective Action Taken: Date Very Minor Fault Low Does not require repair or reassessment for 6 months +. Signature St Ives NSW 2075 Page 6

7 We always attempt to include the graph of the temperatures - it's so much easier to understand the thermograph... Infrared Image IR JPG Information: Asset Rear Storage Area Switchboard Name Motor Control Centre 4 Equipment Motor Thermal Overload Relay Termination Fault Fault Description Load Side AØ. Working Conditions AØ 32 Amps, BØ 33 Amps, CØ 31 Amps. Normal Background Temp 21.9 C Distance 2.0m Create Time 06/07/2011 Visual Image Analyses Table: Object Parameter Max Min L1:AvgTemp L1:MaxTemp L2:AvgTemp L2:MaxTemp Value 63.6 C 20.3 C 31.5 C 38.0 C 42.0 C 63.2 C Comments: Fault Rating Recommendation or Comment Corrective Action Taken: Date Minor Fault - Moderate Needing repair or reassessment within 3 months. Signature St Ives NSW 2075 Page 7

8 Care is taken to highlight the important or difficult to understand areas within the report. This assists in with the interpretation.. Infrared Image IR JPG Information: Asset Plant Room Switchboard Name Power Factor Correction Step 4 Equipment Contactor Termination Fault Fault Description Load Side AØ Working Conditions AØ 47 Amps, BØ 43 Amps, CØ 45 Amps Normal Background Temp 26.3 C Distance 3.0m Create Time 30/08/2010 Visual Image Analyses Table: Object Parameter Max L1:AvgTemp L1:MaxTemp L1:MinTemp L2:AvgTemp L2:MaxTemp L2:MinTemp Min Value C 58.4 C C 33.4 C 40.3 C 57.9 C 31.8 C 30.8 C Comments: Fault Rating Recommendation or Comment Corrective Action Taken: Date Urgent Fault - Extreme Requires immediate attention Repair ASAP: Oxidation and arcing damage has occurred at these temperatures. Parts and cable should be replaced Signature St Ives NSW 2075 Page 8