Low Voltage Switchgear

This light assessment is a simple tool for evaluating the need for a more in-depth assessment carried out by ABB. Its use is strongly recommended for those plants where conventional maintenance strategies are still applied and no other assessment has been performed.

Check each environmental and operational condition, compare the plant situation with given range/status values and select one check button for each field group. Fill in the number of years since the last ABB assessment was performed and click on the Run check button to get the survey result.

Environmental conditions (Id numbers from 1 to 4) refer to the entire switchgear including the period in stock at site, whereas the operational conditions (Id from 5 to 14) relate to the most critical installed device.

Id) Condition

	Range/Status	Choice

IEC	Tmin < -5°C and Tmax > 40°C
	Tmin < -5°C or Tmax > 40°C
	Tmin > -5°C and Tmax < 40°C
ANSI	Tmin < -22°F (-30°C) and Tmax > 104°F (40°C)
	Tmin < -22°F (-30°C) or Tmax > 104°F (40°C)
	Tmin > -22°F (-30°C) and Tmax < 104°F (40°C)
GB	Tmin < -25°C and Tmax > 40°C
	Tmin < -25°C or Tmax > 40°C
	Tmin > -25°C and Tmax < 40°C

Up to 60%
60% to 90%
90% and above

None
Close to sea or industrial area position
Marine or onshore or chemical plant position

Air conditioned
Ventilated with filters
Not protected

Correct function
Incorrect operation reported once
False tripping or permanent incorrect function

Up to 90%
90% to 95%
95% and above

Up to 80%
80% to 95%
95% and above

0
1 to 300
300 to 500
500 and above

Not installed in the plant
Less than 5
5 to 10
More than 10

Less than one
One
More than one

Less than 5
5 to 10
More than 10

Less than 5
5 to 10
More than 10

Number of operations (per day) less than 5
Number of operations (per day) 5 to 10
Number of operations (per day) more than 10
Motors with starting time > 30sec
Target cosφ not reached
Variable speed drive intensive used

Lower or equal 2000m
2000m to 4000m
Higher 4000m

All motors with starting time < 5sec
All motors with starting time < 10sec
All motors with starting time < 30sec
Motors with starting time > 30sec

None
Executed according to guidelines
Executed without guidelines
Executed with ABB

Number of years from the last ABB assessment:

Perform this survey on a yearly basis
A more in-depth asset condition and risk assessment by ABB is needed
A more in-depth asset condition and risk assessment by ABB is urgently needed