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STS-(3000K, 6000K)-H1 Smart Transformer Station
(Spain, Eiffage Turroneros)
Installation Guide
No.
Item
6
Off-load tap
changer
7
Pressure relief
valve
2.2.3.2 STS-6000K-H1 Transformer Room
The transformer room is used to convert the LV AC power into the MV AC power. The main
equipment is a transformer configured with gas, oil temperature, pressure, and oil level
protection. A comprehensive protection device is also configured in the MV room for the
transformer.
Issue 02 (2020-02-21)
Function
Regulates the voltage.
Releases pressure.
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Description
reed switch contact for gas accumulation will be
closed to send signals. When there is too much
gas, it can be released through the gas nozzle of
the gas relay.
When there is a strong gas flow in the
transformer, the reed switch contact for oil flow
will be closed and the circuit breaker of the ring
main unit will trip.
There are five levels. Level 1 indicates the
maximum tapping value, level 3 indicates the rated
tapping value, and level 5 indicates the minimum
tapping value.
If a transformer is faulty, a large amount of gas is
generated, and the pressure of the insulation oil
increases sharply. When the certain threshold is
reached, the transformer oil is discharged and the
internal pressure of the transformer decreases to a
normal value. At the same time, a signal is sent to
trip the circuit breaker in the ring main unit.
2 Product Overview
14
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