GENERAL SPECIFICATION.- OTI / WTI
The fully sealed liquid expansion in the system provides a self powered indication and operation to the instruments, and does not require any trimming or other
periodic adjustments.
• Instruments are fully compensated for ambient temperature.
• The WTI instruments have a built in Thermal imaging system for transformer’s hot spot indication.
• The WTIs are provided with gradient adjustment through a shunt for CT secondary input (1A to 5A).
• Instrument cases are aluminium die casted and polyester powder coated. Each instrument has anti vibration mountings and are provided with projection
mounting clamps.
• A maximum pointer facility is provided, can be reset from outside.
• All switch contacts are potential free micro switches.
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