This device indicates the level of oil in the transformer, the function is to warn about leaks that occur in the transformer and endanger the transformer dielectric fluid loss. In the rotary type clock indicators shaft is connected to a float by an arm to rotate the rotor, through the wall is located outside the indicator needle points oil level. Prevents that core and coil assembly be covered by oil all time while transformer is energized.
Oil Level Indicator
- Installed at the top side tank, lateral side of the expansion tank, the gauges are installed in transformer and in the conservator tank of the On Load Tap Changers – OLTC.
- Alarm and trip signals, usually with two pairs of contacts NO, NC
- Connection scheme ANSI, IEC.