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Instruction Manual
Any person involved with transport, installation, energizing, operation and maintenance of
Combined Instrument Transformer (CIT) type KOTEF must read these instructions prior to any
action related to these instrument transformers.
These CITs are built under strict conditions which guarantee the Highest Quality achievement. In
order to keep this high-quality during CIT's lifespan, it is utmost important that the instructions
in this Manual be thoroughly read and complied with.
THESE COMBINED INSTRUMENT TRANSFORMERS CAN NOT BE STORED IN A
HORIZONTAL POSITION FOR MORE THAN FOUR MONTHS. IF THE TIME OF
TRANSPORTION AND STORAGE EXCEEDS THIS PERIOD, IT IS MANDATORY TO UNPACK
AND PUT THE TRANSFORMER INTO A VERTICAL POSITION, FIXING ITS BASE TO THE
GROUND AND REMOVING THE BELLOWS BLOCKING SYSTEM (PLEASE REFER TO ITEM 4).
DE-ENERGIZED HIGH VOLTAGE EQUIPMENT MAY CONTAIN TRAPPED CHARGES
Read this instruction book before installation and operation of the unit.
Never work on High voltage equipment without first having short-circuited and grounded all terminals and
metallic housings as the inherent capacitance may have electric charges with voltage at the lethal level. In
addition, a ground rod should stay on the line terminal as long as people work on the unit.
In the event an electrical test is to be performed, the person supervises the test will be held responsible for
performing the test in a safe manner under the local / federal regulation. After the test, the ground rod should be
put back to the line terminal until the unit is ready to be energized.
Note:
To effectively discharge High voltage equipment do the following:
a)
Put the ground rod onto the line terminal (Such action will short-circuit the entire unit and put the line terminal to
the ground potential), and
b)
Use another ground rod to attach to any intermediate metallic housing for duration of 10 –15 seconds to be certain
that there is no residual electrical charge within the unit.
Preliminary Remarks
During reception of the CITs, it is important to check unpacking attentively in order to control the
condition of the transportation crate and the transformer itself. Any irregularities shall be
recorded on the transport delivery note and a formal communication shall be sent to the
responsible person immediately.
The supplied insulator can be made of porcelain, therefore, sudden movements that can cause
damage due to cracks shall be avoided.
© GE Grid Solutions
Warning!
****WARNING****
3
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