Ormazabal velatia transforma.earth, General Instructions Manual

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Maintenance General instructions
transforma .earth
IG-286-EN version 01
Operation Elements to control Frequency Observations
1
Accessories with alarm and
firing contact
1 time every 2 years
Verify conditions of use, the contacts
and measure the the electrical circuit
insulation
2 Terminal box 1 time every 2 years Check connections and clean dirt off
3 Silica gel 1 time per year
Check the condition of the silica gel If
needed, replace it
4 Terminals 1 time every 2 years Check condition and clean
5 Thermometer 1 time per year
Check the maximum temperature
recorded and record it
6 Insulation resistance 1 time per year
When a change is detected in the
results after years of using
the transformer or from comparing
data from previous tests
7
Measuring the
equipment’s tan δ
1 time every 3 years
8 Superficial oil voltage test 1 time per year
9 Oil acidic value 1 time every 3 years
10 General oil condition test
Whenever the tests show abnormal
data
6 to 10.
Whenever a maximum temperature
is recorded that is greater than
105 ºC
Take an oil sample and perform tests
according to IEC Standard 60422
11 Oil humidity content test
Whenever the tests show abnormal
data
6 to 10.
Whenever a maximum temperature
is recorded that is greater than
105 ºC
12 Oil insulation filtering
If the results of operations 10 and 11
show values greater than standard
limits
Tab. 6.1: Maintenance frequency