Electrical

  • May 2020
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iRed

No Name Ltd. 1. Some Road. Near A Town.

Priority

Hidden Dangers.

2

Thermographic Consultants

Quality Audit Trail Information Image Date/Time Camera Serial No Image Number

14/10/2006

38.0°C 38

09:27:20

15110274

36

E1014-07.img

34 32

Thermographers Collated Data 30

AR01

Emissivity Setting

0.85

Distance from object

1.0 m

Background Tamb

17.6°C

Room Temperature

21

28 26 24

Electrical Load Recorded Data

22

Spot 1

Load reading taken at survey

Not Required For

Total load as per circuit chart

This Survey

20

Predicted Load correction Results Label

Value

Actual Spot 1 measured temp

28.9°C

AR01 : max

29.4°C

Reference Spot temperature

27.6°C

AR01 : min

20.8°C

Actual Delta T Rise

1.25 °C

AR01 : avg

23.2°C

Predicted Full Load Delta T Rise

*

Predicted max temp at full load

*

19.0°C

Reference Spot

Engineers specific comment : There are issues with some of the breakers on this board. However, a trained thermographer would be particularly interested in the small heat flare running down the cable on the red phase. (Spot1 to Ref spot). Without the use of a thermal camera this anomaly would proably gone unnoticed. SEE NEXT PAGE.

General Comments The overall condition of the unit was good. No visible damage was evident. Access to unit was also acceptable.

iRed R limited

Colt House New Lane Havant Hampshire PO9 2LY Tel 02392 484400

Fax 02392 484411 e-mail [email protected] web www.ired.ltd.uk

OP/04/B/FE/05

4404/04

iRed

No Name Ltd. 1. Some Road. Near A Town.

Priority

Hidden Dangers Revealed.

1

Thermographic Consultants

Quality Audit Trail Information Image Date/Time Camera Serial No

14/10/2006

140.0°C 140

09:34:44 AR01

15110274

120

Image Number

E1014-09.img 100

Thermographers Collated Data Spot 1

Emissivity Setting

0.85

Distance from object

1.0 m

Background Tamb

17.6°C

Room Temperature

21

80

60

40

Electrical Load Recorded Data Load reading taken at survey Total load as per circuit chart

Reference Spot

Not Required For

20 18.0°C

This Survey

Predicted Load correction Results Label

Value

Actual Spot 1 measured temp

167.0°C

AR01 : max

167.1°C

Reference Spot temperature

57.5°C

AR01 : min

19.9°C

109.49 °C

AR01 : avg

30.3°C

Actual Delta T Rise Predicted Full Load Delta T Rise

*

Predicted max temp at full load

*

Engineers specific comment : Once the safety cover had been removed by the Electrician the true danger was revealed. Spot 1 is measuring the temperature on the terminal screw head, the area to the left of this is a small burning hole. This can be seen in the digital image.

General Comments The overall condition of the unit was good. No visible damage was evident. Access to unit was also acceptable.

iRed R limited

Colt House New Lane Havant Hampshire PO9 2LY Tel 02392 484400

Fax 02392 484411 e-mail [email protected] web www.ired.ltd.uk

OP/04/B/FE/05

4404/04

iRed

No Name Ltd. 1. Some Road. Near A Town.

Priority

Predictive Loading.

2

Thermographic Consultants

Quality Audit Trail Information Image Date/Time Camera Serial No Image Number

45.0°C 45

AR01

12/05/2007

11:13:36

15110274 40

E7012-97.img

Thermographers Collated Data Emissivity Setting

35

0.85 Spot 1

Distance from object

1.5 m

Background Tamb

20.1°C

Room Temperature

21

30

25

Electrical Load Recorded Data

Reference Spot

Load reading taken at survey

33

Total load as per circuit chart

63

20 20.0°C

Predicted Load correction Results Label

Value

Actual Spot 1 measured temp

39.7°C

AR01 : max

45.2°C

Reference Spot temperature

29.7°C

AR01 : min

22.5°C

Actual Delta T Rise

9.98 °C

AR01 : avg

26.5°C

Predicted Full Load Delta T Rise

36.36 °C

Predicted max temp at full load

66.05 °C

Engineers specific comment : This image clearly shows a hotspot (anomally) with a flare dissipating along the cable.However, with the aid of a clamp meter we are now able to predict what would happen to that circuit under full load conditions.

General Comments The overall condition of the unit was good. No visible damage was evident. Access to unit was also acceptable.

iRed R limited

Colt House New Lane Havant Hampshire PO9 2LY Tel 02392 484400

Fax 02392 484411 e-mail [email protected] web www.ired.ltd.uk

OP/04/B/FE/05

4404/04

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