ABB Comem OLI - Tests

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TRANSFORMER COMPONENTS
OIL LEVEL INDICATOR - INSTRUCTION MANUAL
3.4 Tests
Description Reference standard Description Reference standard
Fast transient/burs immunity test  Emission standard 
  Harmonic current emission 
Conducted disturbances  Harmonic current emission 
Electrostatic discharge  Voltage fluctuations and flicker 
Surge immunity test  Vibration Test 
Magnetic field immunity test  Vibration Test 
Power frequency magnetic field  - -
Other values may be agreed between purchaser and
supplier. The minimum contact life shall be 1.000
operations.
EXPECTED USE : EXTERNAL
MAXIMUM ALTITUDE : 2000 M
MAXIMUM HUMIDITY : 80%
POLLUTION LEVEL : GRADE III
NOTE
FOR COMEM EOLI
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3. Operating principle