Commissioning - Siemens GEAFOL Neo Operating Manual

7. Commissioning

7.1 Adjustment of transformer accessories
7.1.1 Commissioning of temperature control system
The transformer may be equipped with a temperature control system to monitor the temperature of the winding to
prevent abnormal temperature rise of the winding, thereby protecting the transformer.
The temperature control system includes a temperature controller and a temperature sensor (PT100). The temperature
sensor (PT100) is placed in the three-phase winding of the transformer. When the temperature reaches the set value, the
temperature sensor (PT100) feeds back the corresponding temperature change to the temperature controller. After the
temperature controller receives the corresponding feedback signal, it corresponds to different functional responses (as shown
below). The over-temperature alarm and over-temperature trip functions need to be connected with the relay protection
system of the front-end equipment so that the higher-level equipment can be linked when the temperature controller acts.
Temperature controller function description
Over-temperature trip
Over-temperature alarm
The commissioning steps of the temperature control system are as follows:
a. Check the appearance of the temperature controller and temperature sensor.
b. Refer to the temperature controller manual for relevant parameters and setting methods.
c. To verify the function of the temperature controller at room temperature, the relevant functional parameters need to
be changed.
d. After commissioning, the temperature controller settings need to be restored to the default parameters.
Warnings:
• Unless the wiring is equipped with the protection switch, it is forbidden to supply power to the temperature controller directly
from the low-voltage bus bar of the transformer in order to prevent damage to the temperature controller caused by inrush
current impulse.
• During the commissioning of the temperature control system, it is necessary to confirm that the upper and lower equipment of
the transformer have been disconnected, to prevent the occurrence of malfunction.
7.1.2 Travel switch commissioning
Before commissioning of the travel switch, please consult the secondary wire diagram of the transformer to understand
the corresponding operation logics.
The commissioning steps of the travel switch are as follows:
a. Mechanical function commissioning: Open the door on one side of the travel switch by approx. 20 ° and you can
hear the switch sound "ON/OFF".
b. Electrical function commissioning: According to the "Door Switching Node" section of the secondary wire diagram,
terminals 1-2 and 3-4 correspond to "normally open" and "normally closed" functions, respectively. When all doors
of transformer protective enclosure are closed, use multi-meter to measure terminals 1-2, without beeping sound
("normally open" state); Measure terminal 3-4 with beeping sound ("normally closed" state).
18
Fan on
Fan off
Auxiliary wire diagram
Parameter settings
150 ˚ C
130 ˚ C
100 ˚ C
80 ˚ C